2254 lines
52 KiB
Perl
2254 lines
52 KiB
Perl
#!/usr/bin/env perl
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# ====================================================================
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# Written by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL
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# project. The module is, however, dual licensed under OpenSSL and
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# CRYPTOGAMS licenses depending on where you obtain it. For further
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# details see http://www.openssl.org/~appro/cryptogams/.
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# ====================================================================
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# AES for s390x.
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# April 2007.
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#
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# Software performance improvement over gcc-generated code is ~70% and
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# in absolute terms is ~73 cycles per byte processed with 128-bit key.
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# You're likely to exclaim "why so slow?" Keep in mind that z-CPUs are
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# *strictly* in-order execution and issued instruction [in this case
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# load value from memory is critical] has to complete before execution
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# flow proceeds. S-boxes are compressed to 2KB[+256B].
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#
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# As for hardware acceleration support. It's basically a "teaser," as
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# it can and should be improved in several ways. Most notably support
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# for CBC is not utilized, nor multiple blocks are ever processed.
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# Then software key schedule can be postponed till hardware support
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# detection... Performance improvement over assembler is reportedly
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# ~2.5x, but can reach >8x [naturally on larger chunks] if proper
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# support is implemented.
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# May 2007.
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#
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# Implement AES_set_[en|de]crypt_key. Key schedule setup is avoided
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# for 128-bit keys, if hardware support is detected.
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# Januray 2009.
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#
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# Add support for hardware AES192/256 and reschedule instructions to
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# minimize/avoid Address Generation Interlock hazard and to favour
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# dual-issue z10 pipeline. This gave ~25% improvement on z10 and
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# almost 50% on z9. The gain is smaller on z10, because being dual-
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# issue z10 makes it improssible to eliminate the interlock condition:
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# critial path is not long enough. Yet it spends ~24 cycles per byte
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# processed with 128-bit key.
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#
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# Unlike previous version hardware support detection takes place only
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# at the moment of key schedule setup, which is denoted in key->rounds.
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# This is done, because deferred key setup can't be made MT-safe, not
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# for keys longer than 128 bits.
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#
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# Add AES_cbc_encrypt, which gives incredible performance improvement,
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# it was measured to be ~6.6x. It's less than previously mentioned 8x,
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# because software implementation was optimized.
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# May 2010.
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#
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# Add AES_ctr32_encrypt. If hardware-assisted, it provides up to 4.3x
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# performance improvement over "generic" counter mode routine relying
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# on single-block, also hardware-assisted, AES_encrypt. "Up to" refers
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# to the fact that exact throughput value depends on current stack
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# frame alignment within 4KB page. In worst case you get ~75% of the
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# maximum, but *on average* it would be as much as ~98%. Meaning that
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# worst case is unlike, it's like hitting ravine on plateau.
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# November 2010.
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#
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# Adapt for -m31 build. If kernel supports what's called "highgprs"
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# feature on Linux [see /proc/cpuinfo], it's possible to use 64-bit
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# instructions and achieve "64-bit" performance even in 31-bit legacy
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# application context. The feature is not specific to any particular
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# processor, as long as it's "z-CPU". Latter implies that the code
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# remains z/Architecture specific. On z990 it was measured to perform
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# 2x better than code generated by gcc 4.3.
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# December 2010.
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#
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# Add support for z196 "cipher message with counter" instruction.
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# Note however that it's disengaged, because it was measured to
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# perform ~12% worse than vanilla km-based code...
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# February 2011.
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#
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# Add AES_xts_[en|de]crypt. This includes support for z196 km-xts-aes
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# instructions, which deliver ~70% improvement at 8KB block size over
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# vanilla km-based code, 37% - at most like 512-bytes block size.
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$flavour = shift;
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if ($flavour =~ /3[12]/) {
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$SIZE_T=4;
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$g="";
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} else {
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$SIZE_T=8;
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$g="g";
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}
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while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {}
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open STDOUT,">$output";
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$softonly=0; # allow hardware support
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$t0="%r0"; $mask="%r0";
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$t1="%r1";
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$t2="%r2"; $inp="%r2";
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$t3="%r3"; $out="%r3"; $bits="%r3";
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$key="%r4";
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$i1="%r5";
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$i2="%r6";
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$i3="%r7";
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$s0="%r8";
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$s1="%r9";
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$s2="%r10";
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$s3="%r11";
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$tbl="%r12";
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$rounds="%r13";
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$ra="%r14";
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$sp="%r15";
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$stdframe=16*$SIZE_T+4*8;
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sub _data_word()
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{ my $i;
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while(defined($i=shift)) { $code.=sprintf".long\t0x%08x,0x%08x\n",$i,$i; }
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}
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$code=<<___;
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.text
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.type AES_Te,\@object
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.align 256
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AES_Te:
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___
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&_data_word(
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0xc66363a5, 0xf87c7c84, 0xee777799, 0xf67b7b8d,
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0xfff2f20d, 0xd66b6bbd, 0xde6f6fb1, 0x91c5c554,
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0x60303050, 0x02010103, 0xce6767a9, 0x562b2b7d,
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0xe7fefe19, 0xb5d7d762, 0x4dababe6, 0xec76769a,
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0x8fcaca45, 0x1f82829d, 0x89c9c940, 0xfa7d7d87,
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0xeffafa15, 0xb25959eb, 0x8e4747c9, 0xfbf0f00b,
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0x41adadec, 0xb3d4d467, 0x5fa2a2fd, 0x45afafea,
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0x239c9cbf, 0x53a4a4f7, 0xe4727296, 0x9bc0c05b,
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0x75b7b7c2, 0xe1fdfd1c, 0x3d9393ae, 0x4c26266a,
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0x6c36365a, 0x7e3f3f41, 0xf5f7f702, 0x83cccc4f,
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0x6834345c, 0x51a5a5f4, 0xd1e5e534, 0xf9f1f108,
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0xe2717193, 0xabd8d873, 0x62313153, 0x2a15153f,
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0x0804040c, 0x95c7c752, 0x46232365, 0x9dc3c35e,
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0x30181828, 0x379696a1, 0x0a05050f, 0x2f9a9ab5,
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0x0e070709, 0x24121236, 0x1b80809b, 0xdfe2e23d,
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0xcdebeb26, 0x4e272769, 0x7fb2b2cd, 0xea75759f,
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0x1209091b, 0x1d83839e, 0x582c2c74, 0x341a1a2e,
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0x361b1b2d, 0xdc6e6eb2, 0xb45a5aee, 0x5ba0a0fb,
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0xa45252f6, 0x763b3b4d, 0xb7d6d661, 0x7db3b3ce,
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0x5229297b, 0xdde3e33e, 0x5e2f2f71, 0x13848497,
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0xa65353f5, 0xb9d1d168, 0x00000000, 0xc1eded2c,
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0x40202060, 0xe3fcfc1f, 0x79b1b1c8, 0xb65b5bed,
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0xd46a6abe, 0x8dcbcb46, 0x67bebed9, 0x7239394b,
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0x944a4ade, 0x984c4cd4, 0xb05858e8, 0x85cfcf4a,
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0xbbd0d06b, 0xc5efef2a, 0x4faaaae5, 0xedfbfb16,
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0x864343c5, 0x9a4d4dd7, 0x66333355, 0x11858594,
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0x8a4545cf, 0xe9f9f910, 0x04020206, 0xfe7f7f81,
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0xa05050f0, 0x783c3c44, 0x259f9fba, 0x4ba8a8e3,
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0xa25151f3, 0x5da3a3fe, 0x804040c0, 0x058f8f8a,
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0x3f9292ad, 0x219d9dbc, 0x70383848, 0xf1f5f504,
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0x63bcbcdf, 0x77b6b6c1, 0xafdada75, 0x42212163,
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0x20101030, 0xe5ffff1a, 0xfdf3f30e, 0xbfd2d26d,
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0x81cdcd4c, 0x180c0c14, 0x26131335, 0xc3ecec2f,
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0xbe5f5fe1, 0x359797a2, 0x884444cc, 0x2e171739,
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0x93c4c457, 0x55a7a7f2, 0xfc7e7e82, 0x7a3d3d47,
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0xc86464ac, 0xba5d5de7, 0x3219192b, 0xe6737395,
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0xc06060a0, 0x19818198, 0x9e4f4fd1, 0xa3dcdc7f,
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0x44222266, 0x542a2a7e, 0x3b9090ab, 0x0b888883,
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0x8c4646ca, 0xc7eeee29, 0x6bb8b8d3, 0x2814143c,
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0xa7dede79, 0xbc5e5ee2, 0x160b0b1d, 0xaddbdb76,
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0xdbe0e03b, 0x64323256, 0x743a3a4e, 0x140a0a1e,
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0x924949db, 0x0c06060a, 0x4824246c, 0xb85c5ce4,
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0x9fc2c25d, 0xbdd3d36e, 0x43acacef, 0xc46262a6,
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0x399191a8, 0x319595a4, 0xd3e4e437, 0xf279798b,
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0xd5e7e732, 0x8bc8c843, 0x6e373759, 0xda6d6db7,
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0x018d8d8c, 0xb1d5d564, 0x9c4e4ed2, 0x49a9a9e0,
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0xd86c6cb4, 0xac5656fa, 0xf3f4f407, 0xcfeaea25,
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0xca6565af, 0xf47a7a8e, 0x47aeaee9, 0x10080818,
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0x6fbabad5, 0xf0787888, 0x4a25256f, 0x5c2e2e72,
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0x381c1c24, 0x57a6a6f1, 0x73b4b4c7, 0x97c6c651,
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0xcbe8e823, 0xa1dddd7c, 0xe874749c, 0x3e1f1f21,
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0x964b4bdd, 0x61bdbddc, 0x0d8b8b86, 0x0f8a8a85,
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0xe0707090, 0x7c3e3e42, 0x71b5b5c4, 0xcc6666aa,
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0x904848d8, 0x06030305, 0xf7f6f601, 0x1c0e0e12,
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0xc26161a3, 0x6a35355f, 0xae5757f9, 0x69b9b9d0,
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0x17868691, 0x99c1c158, 0x3a1d1d27, 0x279e9eb9,
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0xd9e1e138, 0xebf8f813, 0x2b9898b3, 0x22111133,
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0xd26969bb, 0xa9d9d970, 0x078e8e89, 0x339494a7,
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0x2d9b9bb6, 0x3c1e1e22, 0x15878792, 0xc9e9e920,
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0x87cece49, 0xaa5555ff, 0x50282878, 0xa5dfdf7a,
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0x038c8c8f, 0x59a1a1f8, 0x09898980, 0x1a0d0d17,
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0x65bfbfda, 0xd7e6e631, 0x844242c6, 0xd06868b8,
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0x824141c3, 0x299999b0, 0x5a2d2d77, 0x1e0f0f11,
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0x7bb0b0cb, 0xa85454fc, 0x6dbbbbd6, 0x2c16163a);
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$code.=<<___;
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# Te4[256]
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.byte 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5
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.byte 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76
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.byte 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0
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.byte 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0
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.byte 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc
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.byte 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15
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.byte 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a
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.byte 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75
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.byte 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0
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.byte 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84
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.byte 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b
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.byte 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf
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.byte 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85
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.byte 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8
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.byte 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5
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.byte 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2
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.byte 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17
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.byte 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73
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.byte 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88
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.byte 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb
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.byte 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c
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.byte 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79
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.byte 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9
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.byte 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08
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.byte 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6
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.byte 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a
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.byte 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e
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.byte 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e
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.byte 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94
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.byte 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf
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.byte 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68
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.byte 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16
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# rcon[]
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.long 0x01000000, 0x02000000, 0x04000000, 0x08000000
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.long 0x10000000, 0x20000000, 0x40000000, 0x80000000
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.long 0x1B000000, 0x36000000, 0, 0, 0, 0, 0, 0
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.align 256
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.size AES_Te,.-AES_Te
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# void AES_encrypt(const unsigned char *inp, unsigned char *out,
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# const AES_KEY *key) {
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.globl AES_encrypt
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.type AES_encrypt,\@function
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AES_encrypt:
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___
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$code.=<<___ if (!$softonly);
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l %r0,240($key)
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lhi %r1,16
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clr %r0,%r1
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jl .Lesoft
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la %r1,0($key)
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#la %r2,0($inp)
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la %r4,0($out)
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lghi %r3,16 # single block length
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.long 0xb92e0042 # km %r4,%r2
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brc 1,.-4 # can this happen?
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br %r14
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.align 64
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.Lesoft:
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___
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$code.=<<___;
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stm${g} %r3,$ra,3*$SIZE_T($sp)
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llgf $s0,0($inp)
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llgf $s1,4($inp)
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llgf $s2,8($inp)
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llgf $s3,12($inp)
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larl $tbl,AES_Te
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bras $ra,_s390x_AES_encrypt
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l${g} $out,3*$SIZE_T($sp)
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st $s0,0($out)
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st $s1,4($out)
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st $s2,8($out)
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st $s3,12($out)
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lm${g} %r6,$ra,6*$SIZE_T($sp)
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br $ra
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.size AES_encrypt,.-AES_encrypt
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.type _s390x_AES_encrypt,\@function
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.align 16
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_s390x_AES_encrypt:
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st${g} $ra,15*$SIZE_T($sp)
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x $s0,0($key)
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x $s1,4($key)
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x $s2,8($key)
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x $s3,12($key)
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l $rounds,240($key)
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llill $mask,`0xff<<3`
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aghi $rounds,-1
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j .Lenc_loop
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.align 16
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.Lenc_loop:
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sllg $t1,$s0,`0+3`
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srlg $t2,$s0,`8-3`
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srlg $t3,$s0,`16-3`
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srl $s0,`24-3`
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nr $s0,$mask
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ngr $t1,$mask
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nr $t2,$mask
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nr $t3,$mask
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srlg $i1,$s1,`16-3` # i0
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sllg $i2,$s1,`0+3`
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srlg $i3,$s1,`8-3`
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srl $s1,`24-3`
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nr $i1,$mask
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nr $s1,$mask
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ngr $i2,$mask
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nr $i3,$mask
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l $s0,0($s0,$tbl) # Te0[s0>>24]
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l $t1,1($t1,$tbl) # Te3[s0>>0]
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l $t2,2($t2,$tbl) # Te2[s0>>8]
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l $t3,3($t3,$tbl) # Te1[s0>>16]
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x $s0,3($i1,$tbl) # Te1[s1>>16]
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l $s1,0($s1,$tbl) # Te0[s1>>24]
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x $t2,1($i2,$tbl) # Te3[s1>>0]
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x $t3,2($i3,$tbl) # Te2[s1>>8]
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srlg $i1,$s2,`8-3` # i0
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srlg $i2,$s2,`16-3` # i1
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nr $i1,$mask
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nr $i2,$mask
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sllg $i3,$s2,`0+3`
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srl $s2,`24-3`
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nr $s2,$mask
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ngr $i3,$mask
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xr $s1,$t1
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srlg $ra,$s3,`8-3` # i1
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sllg $t1,$s3,`0+3` # i0
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nr $ra,$mask
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la $key,16($key)
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ngr $t1,$mask
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x $s0,2($i1,$tbl) # Te2[s2>>8]
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x $s1,3($i2,$tbl) # Te1[s2>>16]
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l $s2,0($s2,$tbl) # Te0[s2>>24]
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|
x $t3,1($i3,$tbl) # Te3[s2>>0]
|
|
|
|
srlg $i3,$s3,`16-3` # i2
|
|
xr $s2,$t2
|
|
srl $s3,`24-3`
|
|
nr $i3,$mask
|
|
nr $s3,$mask
|
|
|
|
x $s0,0($key)
|
|
x $s1,4($key)
|
|
x $s2,8($key)
|
|
x $t3,12($key)
|
|
|
|
x $s0,1($t1,$tbl) # Te3[s3>>0]
|
|
x $s1,2($ra,$tbl) # Te2[s3>>8]
|
|
x $s2,3($i3,$tbl) # Te1[s3>>16]
|
|
l $s3,0($s3,$tbl) # Te0[s3>>24]
|
|
xr $s3,$t3
|
|
|
|
brct $rounds,.Lenc_loop
|
|
.align 16
|
|
|
|
sllg $t1,$s0,`0+3`
|
|
srlg $t2,$s0,`8-3`
|
|
ngr $t1,$mask
|
|
srlg $t3,$s0,`16-3`
|
|
srl $s0,`24-3`
|
|
nr $s0,$mask
|
|
nr $t2,$mask
|
|
nr $t3,$mask
|
|
|
|
srlg $i1,$s1,`16-3` # i0
|
|
sllg $i2,$s1,`0+3`
|
|
ngr $i2,$mask
|
|
srlg $i3,$s1,`8-3`
|
|
srl $s1,`24-3`
|
|
nr $i1,$mask
|
|
nr $s1,$mask
|
|
nr $i3,$mask
|
|
|
|
llgc $s0,2($s0,$tbl) # Te4[s0>>24]
|
|
llgc $t1,2($t1,$tbl) # Te4[s0>>0]
|
|
sll $s0,24
|
|
llgc $t2,2($t2,$tbl) # Te4[s0>>8]
|
|
llgc $t3,2($t3,$tbl) # Te4[s0>>16]
|
|
sll $t2,8
|
|
sll $t3,16
|
|
|
|
llgc $i1,2($i1,$tbl) # Te4[s1>>16]
|
|
llgc $s1,2($s1,$tbl) # Te4[s1>>24]
|
|
llgc $i2,2($i2,$tbl) # Te4[s1>>0]
|
|
llgc $i3,2($i3,$tbl) # Te4[s1>>8]
|
|
sll $i1,16
|
|
sll $s1,24
|
|
sll $i3,8
|
|
or $s0,$i1
|
|
or $s1,$t1
|
|
or $t2,$i2
|
|
or $t3,$i3
|
|
|
|
srlg $i1,$s2,`8-3` # i0
|
|
srlg $i2,$s2,`16-3` # i1
|
|
nr $i1,$mask
|
|
nr $i2,$mask
|
|
sllg $i3,$s2,`0+3`
|
|
srl $s2,`24-3`
|
|
ngr $i3,$mask
|
|
nr $s2,$mask
|
|
|
|
sllg $t1,$s3,`0+3` # i0
|
|
srlg $ra,$s3,`8-3` # i1
|
|
ngr $t1,$mask
|
|
|
|
llgc $i1,2($i1,$tbl) # Te4[s2>>8]
|
|
llgc $i2,2($i2,$tbl) # Te4[s2>>16]
|
|
sll $i1,8
|
|
llgc $s2,2($s2,$tbl) # Te4[s2>>24]
|
|
llgc $i3,2($i3,$tbl) # Te4[s2>>0]
|
|
sll $i2,16
|
|
nr $ra,$mask
|
|
sll $s2,24
|
|
or $s0,$i1
|
|
or $s1,$i2
|
|
or $s2,$t2
|
|
or $t3,$i3
|
|
|
|
srlg $i3,$s3,`16-3` # i2
|
|
srl $s3,`24-3`
|
|
nr $i3,$mask
|
|
nr $s3,$mask
|
|
|
|
l $t0,16($key)
|
|
l $t2,20($key)
|
|
|
|
llgc $i1,2($t1,$tbl) # Te4[s3>>0]
|
|
llgc $i2,2($ra,$tbl) # Te4[s3>>8]
|
|
llgc $i3,2($i3,$tbl) # Te4[s3>>16]
|
|
llgc $s3,2($s3,$tbl) # Te4[s3>>24]
|
|
sll $i2,8
|
|
sll $i3,16
|
|
sll $s3,24
|
|
or $s0,$i1
|
|
or $s1,$i2
|
|
or $s2,$i3
|
|
or $s3,$t3
|
|
|
|
l${g} $ra,15*$SIZE_T($sp)
|
|
xr $s0,$t0
|
|
xr $s1,$t2
|
|
x $s2,24($key)
|
|
x $s3,28($key)
|
|
|
|
br $ra
|
|
.size _s390x_AES_encrypt,.-_s390x_AES_encrypt
|
|
___
|
|
|
|
$code.=<<___;
|
|
.type AES_Td,\@object
|
|
.align 256
|
|
AES_Td:
|
|
___
|
|
&_data_word(
|
|
0x51f4a750, 0x7e416553, 0x1a17a4c3, 0x3a275e96,
|
|
0x3bab6bcb, 0x1f9d45f1, 0xacfa58ab, 0x4be30393,
|
|
0x2030fa55, 0xad766df6, 0x88cc7691, 0xf5024c25,
|
|
0x4fe5d7fc, 0xc52acbd7, 0x26354480, 0xb562a38f,
|
|
0xdeb15a49, 0x25ba1b67, 0x45ea0e98, 0x5dfec0e1,
|
|
0xc32f7502, 0x814cf012, 0x8d4697a3, 0x6bd3f9c6,
|
|
0x038f5fe7, 0x15929c95, 0xbf6d7aeb, 0x955259da,
|
|
0xd4be832d, 0x587421d3, 0x49e06929, 0x8ec9c844,
|
|
0x75c2896a, 0xf48e7978, 0x99583e6b, 0x27b971dd,
|
|
0xbee14fb6, 0xf088ad17, 0xc920ac66, 0x7dce3ab4,
|
|
0x63df4a18, 0xe51a3182, 0x97513360, 0x62537f45,
|
|
0xb16477e0, 0xbb6bae84, 0xfe81a01c, 0xf9082b94,
|
|
0x70486858, 0x8f45fd19, 0x94de6c87, 0x527bf8b7,
|
|
0xab73d323, 0x724b02e2, 0xe31f8f57, 0x6655ab2a,
|
|
0xb2eb2807, 0x2fb5c203, 0x86c57b9a, 0xd33708a5,
|
|
0x302887f2, 0x23bfa5b2, 0x02036aba, 0xed16825c,
|
|
0x8acf1c2b, 0xa779b492, 0xf307f2f0, 0x4e69e2a1,
|
|
0x65daf4cd, 0x0605bed5, 0xd134621f, 0xc4a6fe8a,
|
|
0x342e539d, 0xa2f355a0, 0x058ae132, 0xa4f6eb75,
|
|
0x0b83ec39, 0x4060efaa, 0x5e719f06, 0xbd6e1051,
|
|
0x3e218af9, 0x96dd063d, 0xdd3e05ae, 0x4de6bd46,
|
|
0x91548db5, 0x71c45d05, 0x0406d46f, 0x605015ff,
|
|
0x1998fb24, 0xd6bde997, 0x894043cc, 0x67d99e77,
|
|
0xb0e842bd, 0x07898b88, 0xe7195b38, 0x79c8eedb,
|
|
0xa17c0a47, 0x7c420fe9, 0xf8841ec9, 0x00000000,
|
|
0x09808683, 0x322bed48, 0x1e1170ac, 0x6c5a724e,
|
|
0xfd0efffb, 0x0f853856, 0x3daed51e, 0x362d3927,
|
|
0x0a0fd964, 0x685ca621, 0x9b5b54d1, 0x24362e3a,
|
|
0x0c0a67b1, 0x9357e70f, 0xb4ee96d2, 0x1b9b919e,
|
|
0x80c0c54f, 0x61dc20a2, 0x5a774b69, 0x1c121a16,
|
|
0xe293ba0a, 0xc0a02ae5, 0x3c22e043, 0x121b171d,
|
|
0x0e090d0b, 0xf28bc7ad, 0x2db6a8b9, 0x141ea9c8,
|
|
0x57f11985, 0xaf75074c, 0xee99ddbb, 0xa37f60fd,
|
|
0xf701269f, 0x5c72f5bc, 0x44663bc5, 0x5bfb7e34,
|
|
0x8b432976, 0xcb23c6dc, 0xb6edfc68, 0xb8e4f163,
|
|
0xd731dcca, 0x42638510, 0x13972240, 0x84c61120,
|
|
0x854a247d, 0xd2bb3df8, 0xaef93211, 0xc729a16d,
|
|
0x1d9e2f4b, 0xdcb230f3, 0x0d8652ec, 0x77c1e3d0,
|
|
0x2bb3166c, 0xa970b999, 0x119448fa, 0x47e96422,
|
|
0xa8fc8cc4, 0xa0f03f1a, 0x567d2cd8, 0x223390ef,
|
|
0x87494ec7, 0xd938d1c1, 0x8ccaa2fe, 0x98d40b36,
|
|
0xa6f581cf, 0xa57ade28, 0xdab78e26, 0x3fadbfa4,
|
|
0x2c3a9de4, 0x5078920d, 0x6a5fcc9b, 0x547e4662,
|
|
0xf68d13c2, 0x90d8b8e8, 0x2e39f75e, 0x82c3aff5,
|
|
0x9f5d80be, 0x69d0937c, 0x6fd52da9, 0xcf2512b3,
|
|
0xc8ac993b, 0x10187da7, 0xe89c636e, 0xdb3bbb7b,
|
|
0xcd267809, 0x6e5918f4, 0xec9ab701, 0x834f9aa8,
|
|
0xe6956e65, 0xaaffe67e, 0x21bccf08, 0xef15e8e6,
|
|
0xbae79bd9, 0x4a6f36ce, 0xea9f09d4, 0x29b07cd6,
|
|
0x31a4b2af, 0x2a3f2331, 0xc6a59430, 0x35a266c0,
|
|
0x744ebc37, 0xfc82caa6, 0xe090d0b0, 0x33a7d815,
|
|
0xf104984a, 0x41ecdaf7, 0x7fcd500e, 0x1791f62f,
|
|
0x764dd68d, 0x43efb04d, 0xccaa4d54, 0xe49604df,
|
|
0x9ed1b5e3, 0x4c6a881b, 0xc12c1fb8, 0x4665517f,
|
|
0x9d5eea04, 0x018c355d, 0xfa877473, 0xfb0b412e,
|
|
0xb3671d5a, 0x92dbd252, 0xe9105633, 0x6dd64713,
|
|
0x9ad7618c, 0x37a10c7a, 0x59f8148e, 0xeb133c89,
|
|
0xcea927ee, 0xb761c935, 0xe11ce5ed, 0x7a47b13c,
|
|
0x9cd2df59, 0x55f2733f, 0x1814ce79, 0x73c737bf,
|
|
0x53f7cdea, 0x5ffdaa5b, 0xdf3d6f14, 0x7844db86,
|
|
0xcaaff381, 0xb968c43e, 0x3824342c, 0xc2a3405f,
|
|
0x161dc372, 0xbce2250c, 0x283c498b, 0xff0d9541,
|
|
0x39a80171, 0x080cb3de, 0xd8b4e49c, 0x6456c190,
|
|
0x7bcb8461, 0xd532b670, 0x486c5c74, 0xd0b85742);
|
|
$code.=<<___;
|
|
# Td4[256]
|
|
.byte 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38
|
|
.byte 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb
|
|
.byte 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87
|
|
.byte 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb
|
|
.byte 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d
|
|
.byte 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e
|
|
.byte 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2
|
|
.byte 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25
|
|
.byte 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16
|
|
.byte 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92
|
|
.byte 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda
|
|
.byte 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84
|
|
.byte 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a
|
|
.byte 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06
|
|
.byte 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02
|
|
.byte 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b
|
|
.byte 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea
|
|
.byte 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73
|
|
.byte 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85
|
|
.byte 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e
|
|
.byte 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89
|
|
.byte 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b
|
|
.byte 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20
|
|
.byte 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4
|
|
.byte 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31
|
|
.byte 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f
|
|
.byte 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d
|
|
.byte 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef
|
|
.byte 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0
|
|
.byte 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61
|
|
.byte 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26
|
|
.byte 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d
|
|
.size AES_Td,.-AES_Td
|
|
|
|
# void AES_decrypt(const unsigned char *inp, unsigned char *out,
|
|
# const AES_KEY *key) {
|
|
.globl AES_decrypt
|
|
.type AES_decrypt,\@function
|
|
AES_decrypt:
|
|
___
|
|
$code.=<<___ if (!$softonly);
|
|
l %r0,240($key)
|
|
lhi %r1,16
|
|
clr %r0,%r1
|
|
jl .Ldsoft
|
|
|
|
la %r1,0($key)
|
|
#la %r2,0($inp)
|
|
la %r4,0($out)
|
|
lghi %r3,16 # single block length
|
|
.long 0xb92e0042 # km %r4,%r2
|
|
brc 1,.-4 # can this happen?
|
|
br %r14
|
|
.align 64
|
|
.Ldsoft:
|
|
___
|
|
$code.=<<___;
|
|
stm${g} %r3,$ra,3*$SIZE_T($sp)
|
|
|
|
llgf $s0,0($inp)
|
|
llgf $s1,4($inp)
|
|
llgf $s2,8($inp)
|
|
llgf $s3,12($inp)
|
|
|
|
larl $tbl,AES_Td
|
|
bras $ra,_s390x_AES_decrypt
|
|
|
|
l${g} $out,3*$SIZE_T($sp)
|
|
st $s0,0($out)
|
|
st $s1,4($out)
|
|
st $s2,8($out)
|
|
st $s3,12($out)
|
|
|
|
lm${g} %r6,$ra,6*$SIZE_T($sp)
|
|
br $ra
|
|
.size AES_decrypt,.-AES_decrypt
|
|
|
|
.type _s390x_AES_decrypt,\@function
|
|
.align 16
|
|
_s390x_AES_decrypt:
|
|
st${g} $ra,15*$SIZE_T($sp)
|
|
x $s0,0($key)
|
|
x $s1,4($key)
|
|
x $s2,8($key)
|
|
x $s3,12($key)
|
|
l $rounds,240($key)
|
|
llill $mask,`0xff<<3`
|
|
aghi $rounds,-1
|
|
j .Ldec_loop
|
|
.align 16
|
|
.Ldec_loop:
|
|
srlg $t1,$s0,`16-3`
|
|
srlg $t2,$s0,`8-3`
|
|
sllg $t3,$s0,`0+3`
|
|
srl $s0,`24-3`
|
|
nr $s0,$mask
|
|
nr $t1,$mask
|
|
nr $t2,$mask
|
|
ngr $t3,$mask
|
|
|
|
sllg $i1,$s1,`0+3` # i0
|
|
srlg $i2,$s1,`16-3`
|
|
srlg $i3,$s1,`8-3`
|
|
srl $s1,`24-3`
|
|
ngr $i1,$mask
|
|
nr $s1,$mask
|
|
nr $i2,$mask
|
|
nr $i3,$mask
|
|
|
|
l $s0,0($s0,$tbl) # Td0[s0>>24]
|
|
l $t1,3($t1,$tbl) # Td1[s0>>16]
|
|
l $t2,2($t2,$tbl) # Td2[s0>>8]
|
|
l $t3,1($t3,$tbl) # Td3[s0>>0]
|
|
|
|
x $s0,1($i1,$tbl) # Td3[s1>>0]
|
|
l $s1,0($s1,$tbl) # Td0[s1>>24]
|
|
x $t2,3($i2,$tbl) # Td1[s1>>16]
|
|
x $t3,2($i3,$tbl) # Td2[s1>>8]
|
|
|
|
srlg $i1,$s2,`8-3` # i0
|
|
sllg $i2,$s2,`0+3` # i1
|
|
srlg $i3,$s2,`16-3`
|
|
srl $s2,`24-3`
|
|
nr $i1,$mask
|
|
ngr $i2,$mask
|
|
nr $s2,$mask
|
|
nr $i3,$mask
|
|
|
|
xr $s1,$t1
|
|
srlg $ra,$s3,`8-3` # i1
|
|
srlg $t1,$s3,`16-3` # i0
|
|
nr $ra,$mask
|
|
la $key,16($key)
|
|
nr $t1,$mask
|
|
|
|
x $s0,2($i1,$tbl) # Td2[s2>>8]
|
|
x $s1,1($i2,$tbl) # Td3[s2>>0]
|
|
l $s2,0($s2,$tbl) # Td0[s2>>24]
|
|
x $t3,3($i3,$tbl) # Td1[s2>>16]
|
|
|
|
sllg $i3,$s3,`0+3` # i2
|
|
srl $s3,`24-3`
|
|
ngr $i3,$mask
|
|
nr $s3,$mask
|
|
|
|
xr $s2,$t2
|
|
x $s0,0($key)
|
|
x $s1,4($key)
|
|
x $s2,8($key)
|
|
x $t3,12($key)
|
|
|
|
x $s0,3($t1,$tbl) # Td1[s3>>16]
|
|
x $s1,2($ra,$tbl) # Td2[s3>>8]
|
|
x $s2,1($i3,$tbl) # Td3[s3>>0]
|
|
l $s3,0($s3,$tbl) # Td0[s3>>24]
|
|
xr $s3,$t3
|
|
|
|
brct $rounds,.Ldec_loop
|
|
.align 16
|
|
|
|
l $t1,`2048+0`($tbl) # prefetch Td4
|
|
l $t2,`2048+64`($tbl)
|
|
l $t3,`2048+128`($tbl)
|
|
l $i1,`2048+192`($tbl)
|
|
llill $mask,0xff
|
|
|
|
srlg $i3,$s0,24 # i0
|
|
srlg $t1,$s0,16
|
|
srlg $t2,$s0,8
|
|
nr $s0,$mask # i3
|
|
nr $t1,$mask
|
|
|
|
srlg $i1,$s1,24
|
|
nr $t2,$mask
|
|
srlg $i2,$s1,16
|
|
srlg $ra,$s1,8
|
|
nr $s1,$mask # i0
|
|
nr $i2,$mask
|
|
nr $ra,$mask
|
|
|
|
llgc $i3,2048($i3,$tbl) # Td4[s0>>24]
|
|
llgc $t1,2048($t1,$tbl) # Td4[s0>>16]
|
|
llgc $t2,2048($t2,$tbl) # Td4[s0>>8]
|
|
sll $t1,16
|
|
llgc $t3,2048($s0,$tbl) # Td4[s0>>0]
|
|
sllg $s0,$i3,24
|
|
sll $t2,8
|
|
|
|
llgc $s1,2048($s1,$tbl) # Td4[s1>>0]
|
|
llgc $i1,2048($i1,$tbl) # Td4[s1>>24]
|
|
llgc $i2,2048($i2,$tbl) # Td4[s1>>16]
|
|
sll $i1,24
|
|
llgc $i3,2048($ra,$tbl) # Td4[s1>>8]
|
|
sll $i2,16
|
|
sll $i3,8
|
|
or $s0,$s1
|
|
or $t1,$i1
|
|
or $t2,$i2
|
|
or $t3,$i3
|
|
|
|
srlg $i1,$s2,8 # i0
|
|
srlg $i2,$s2,24
|
|
srlg $i3,$s2,16
|
|
nr $s2,$mask # i1
|
|
nr $i1,$mask
|
|
nr $i3,$mask
|
|
llgc $i1,2048($i1,$tbl) # Td4[s2>>8]
|
|
llgc $s1,2048($s2,$tbl) # Td4[s2>>0]
|
|
llgc $i2,2048($i2,$tbl) # Td4[s2>>24]
|
|
llgc $i3,2048($i3,$tbl) # Td4[s2>>16]
|
|
sll $i1,8
|
|
sll $i2,24
|
|
or $s0,$i1
|
|
sll $i3,16
|
|
or $t2,$i2
|
|
or $t3,$i3
|
|
|
|
srlg $i1,$s3,16 # i0
|
|
srlg $i2,$s3,8 # i1
|
|
srlg $i3,$s3,24
|
|
nr $s3,$mask # i2
|
|
nr $i1,$mask
|
|
nr $i2,$mask
|
|
|
|
l${g} $ra,15*$SIZE_T($sp)
|
|
or $s1,$t1
|
|
l $t0,16($key)
|
|
l $t1,20($key)
|
|
|
|
llgc $i1,2048($i1,$tbl) # Td4[s3>>16]
|
|
llgc $i2,2048($i2,$tbl) # Td4[s3>>8]
|
|
sll $i1,16
|
|
llgc $s2,2048($s3,$tbl) # Td4[s3>>0]
|
|
llgc $s3,2048($i3,$tbl) # Td4[s3>>24]
|
|
sll $i2,8
|
|
sll $s3,24
|
|
or $s0,$i1
|
|
or $s1,$i2
|
|
or $s2,$t2
|
|
or $s3,$t3
|
|
|
|
xr $s0,$t0
|
|
xr $s1,$t1
|
|
x $s2,24($key)
|
|
x $s3,28($key)
|
|
|
|
br $ra
|
|
.size _s390x_AES_decrypt,.-_s390x_AES_decrypt
|
|
___
|
|
|
|
$code.=<<___;
|
|
# void AES_set_encrypt_key(const unsigned char *in, int bits,
|
|
# AES_KEY *key) {
|
|
.globl AES_set_encrypt_key
|
|
.type AES_set_encrypt_key,\@function
|
|
.align 16
|
|
AES_set_encrypt_key:
|
|
_s390x_AES_set_encrypt_key:
|
|
lghi $t0,0
|
|
cl${g}r $inp,$t0
|
|
je .Lminus1
|
|
cl${g}r $key,$t0
|
|
je .Lminus1
|
|
|
|
lghi $t0,128
|
|
clr $bits,$t0
|
|
je .Lproceed
|
|
lghi $t0,192
|
|
clr $bits,$t0
|
|
je .Lproceed
|
|
lghi $t0,256
|
|
clr $bits,$t0
|
|
je .Lproceed
|
|
lghi %r2,-2
|
|
br %r14
|
|
|
|
.align 16
|
|
.Lproceed:
|
|
___
|
|
$code.=<<___ if (!$softonly);
|
|
# convert bits to km code, [128,192,256]->[18,19,20]
|
|
lhi %r5,-128
|
|
lhi %r0,18
|
|
ar %r5,$bits
|
|
srl %r5,6
|
|
ar %r5,%r0
|
|
|
|
larl %r1,OPENSSL_s390xcap_P
|
|
lg %r0,0(%r1)
|
|
tmhl %r0,0x4000 # check for message-security assist
|
|
jz .Lekey_internal
|
|
|
|
lghi %r0,0 # query capability vector
|
|
la %r1,16($sp)
|
|
.long 0xb92f0042 # kmc %r4,%r2
|
|
|
|
llihh %r1,0x8000
|
|
srlg %r1,%r1,0(%r5)
|
|
ng %r1,16($sp)
|
|
jz .Lekey_internal
|
|
|
|
lmg %r0,%r1,0($inp) # just copy 128 bits...
|
|
stmg %r0,%r1,0($key)
|
|
lhi %r0,192
|
|
cr $bits,%r0
|
|
jl 1f
|
|
lg %r1,16($inp)
|
|
stg %r1,16($key)
|
|
je 1f
|
|
lg %r1,24($inp)
|
|
stg %r1,24($key)
|
|
1: st $bits,236($key) # save bits [for debugging purposes]
|
|
lgr $t0,%r5
|
|
st %r5,240($key) # save km code
|
|
lghi %r2,0
|
|
br %r14
|
|
___
|
|
$code.=<<___;
|
|
.align 16
|
|
.Lekey_internal:
|
|
stm${g} %r4,%r13,4*$SIZE_T($sp) # all non-volatile regs and $key
|
|
|
|
larl $tbl,AES_Te+2048
|
|
|
|
llgf $s0,0($inp)
|
|
llgf $s1,4($inp)
|
|
llgf $s2,8($inp)
|
|
llgf $s3,12($inp)
|
|
st $s0,0($key)
|
|
st $s1,4($key)
|
|
st $s2,8($key)
|
|
st $s3,12($key)
|
|
lghi $t0,128
|
|
cr $bits,$t0
|
|
jne .Lnot128
|
|
|
|
llill $mask,0xff
|
|
lghi $t3,0 # i=0
|
|
lghi $rounds,10
|
|
st $rounds,240($key)
|
|
|
|
llgfr $t2,$s3 # temp=rk[3]
|
|
srlg $i1,$s3,8
|
|
srlg $i2,$s3,16
|
|
srlg $i3,$s3,24
|
|
nr $t2,$mask
|
|
nr $i1,$mask
|
|
nr $i2,$mask
|
|
|
|
.align 16
|
|
.L128_loop:
|
|
la $t2,0($t2,$tbl)
|
|
la $i1,0($i1,$tbl)
|
|
la $i2,0($i2,$tbl)
|
|
la $i3,0($i3,$tbl)
|
|
icm $t2,2,0($t2) # Te4[rk[3]>>0]<<8
|
|
icm $t2,4,0($i1) # Te4[rk[3]>>8]<<16
|
|
icm $t2,8,0($i2) # Te4[rk[3]>>16]<<24
|
|
icm $t2,1,0($i3) # Te4[rk[3]>>24]
|
|
x $t2,256($t3,$tbl) # rcon[i]
|
|
xr $s0,$t2 # rk[4]=rk[0]^...
|
|
xr $s1,$s0 # rk[5]=rk[1]^rk[4]
|
|
xr $s2,$s1 # rk[6]=rk[2]^rk[5]
|
|
xr $s3,$s2 # rk[7]=rk[3]^rk[6]
|
|
|
|
llgfr $t2,$s3 # temp=rk[3]
|
|
srlg $i1,$s3,8
|
|
srlg $i2,$s3,16
|
|
nr $t2,$mask
|
|
nr $i1,$mask
|
|
srlg $i3,$s3,24
|
|
nr $i2,$mask
|
|
|
|
st $s0,16($key)
|
|
st $s1,20($key)
|
|
st $s2,24($key)
|
|
st $s3,28($key)
|
|
la $key,16($key) # key+=4
|
|
la $t3,4($t3) # i++
|
|
brct $rounds,.L128_loop
|
|
lghi $t0,10
|
|
lghi %r2,0
|
|
lm${g} %r4,%r13,4*$SIZE_T($sp)
|
|
br $ra
|
|
|
|
.align 16
|
|
.Lnot128:
|
|
llgf $t0,16($inp)
|
|
llgf $t1,20($inp)
|
|
st $t0,16($key)
|
|
st $t1,20($key)
|
|
lghi $t0,192
|
|
cr $bits,$t0
|
|
jne .Lnot192
|
|
|
|
llill $mask,0xff
|
|
lghi $t3,0 # i=0
|
|
lghi $rounds,12
|
|
st $rounds,240($key)
|
|
lghi $rounds,8
|
|
|
|
srlg $i1,$t1,8
|
|
srlg $i2,$t1,16
|
|
srlg $i3,$t1,24
|
|
nr $t1,$mask
|
|
nr $i1,$mask
|
|
nr $i2,$mask
|
|
|
|
.align 16
|
|
.L192_loop:
|
|
la $t1,0($t1,$tbl)
|
|
la $i1,0($i1,$tbl)
|
|
la $i2,0($i2,$tbl)
|
|
la $i3,0($i3,$tbl)
|
|
icm $t1,2,0($t1) # Te4[rk[5]>>0]<<8
|
|
icm $t1,4,0($i1) # Te4[rk[5]>>8]<<16
|
|
icm $t1,8,0($i2) # Te4[rk[5]>>16]<<24
|
|
icm $t1,1,0($i3) # Te4[rk[5]>>24]
|
|
x $t1,256($t3,$tbl) # rcon[i]
|
|
xr $s0,$t1 # rk[6]=rk[0]^...
|
|
xr $s1,$s0 # rk[7]=rk[1]^rk[6]
|
|
xr $s2,$s1 # rk[8]=rk[2]^rk[7]
|
|
xr $s3,$s2 # rk[9]=rk[3]^rk[8]
|
|
|
|
st $s0,24($key)
|
|
st $s1,28($key)
|
|
st $s2,32($key)
|
|
st $s3,36($key)
|
|
brct $rounds,.L192_continue
|
|
lghi $t0,12
|
|
lghi %r2,0
|
|
lm${g} %r4,%r13,4*$SIZE_T($sp)
|
|
br $ra
|
|
|
|
.align 16
|
|
.L192_continue:
|
|
lgr $t1,$s3
|
|
x $t1,16($key) # rk[10]=rk[4]^rk[9]
|
|
st $t1,40($key)
|
|
x $t1,20($key) # rk[11]=rk[5]^rk[10]
|
|
st $t1,44($key)
|
|
|
|
srlg $i1,$t1,8
|
|
srlg $i2,$t1,16
|
|
srlg $i3,$t1,24
|
|
nr $t1,$mask
|
|
nr $i1,$mask
|
|
nr $i2,$mask
|
|
|
|
la $key,24($key) # key+=6
|
|
la $t3,4($t3) # i++
|
|
j .L192_loop
|
|
|
|
.align 16
|
|
.Lnot192:
|
|
llgf $t0,24($inp)
|
|
llgf $t1,28($inp)
|
|
st $t0,24($key)
|
|
st $t1,28($key)
|
|
llill $mask,0xff
|
|
lghi $t3,0 # i=0
|
|
lghi $rounds,14
|
|
st $rounds,240($key)
|
|
lghi $rounds,7
|
|
|
|
srlg $i1,$t1,8
|
|
srlg $i2,$t1,16
|
|
srlg $i3,$t1,24
|
|
nr $t1,$mask
|
|
nr $i1,$mask
|
|
nr $i2,$mask
|
|
|
|
.align 16
|
|
.L256_loop:
|
|
la $t1,0($t1,$tbl)
|
|
la $i1,0($i1,$tbl)
|
|
la $i2,0($i2,$tbl)
|
|
la $i3,0($i3,$tbl)
|
|
icm $t1,2,0($t1) # Te4[rk[7]>>0]<<8
|
|
icm $t1,4,0($i1) # Te4[rk[7]>>8]<<16
|
|
icm $t1,8,0($i2) # Te4[rk[7]>>16]<<24
|
|
icm $t1,1,0($i3) # Te4[rk[7]>>24]
|
|
x $t1,256($t3,$tbl) # rcon[i]
|
|
xr $s0,$t1 # rk[8]=rk[0]^...
|
|
xr $s1,$s0 # rk[9]=rk[1]^rk[8]
|
|
xr $s2,$s1 # rk[10]=rk[2]^rk[9]
|
|
xr $s3,$s2 # rk[11]=rk[3]^rk[10]
|
|
st $s0,32($key)
|
|
st $s1,36($key)
|
|
st $s2,40($key)
|
|
st $s3,44($key)
|
|
brct $rounds,.L256_continue
|
|
lghi $t0,14
|
|
lghi %r2,0
|
|
lm${g} %r4,%r13,4*$SIZE_T($sp)
|
|
br $ra
|
|
|
|
.align 16
|
|
.L256_continue:
|
|
lgr $t1,$s3 # temp=rk[11]
|
|
srlg $i1,$s3,8
|
|
srlg $i2,$s3,16
|
|
srlg $i3,$s3,24
|
|
nr $t1,$mask
|
|
nr $i1,$mask
|
|
nr $i2,$mask
|
|
la $t1,0($t1,$tbl)
|
|
la $i1,0($i1,$tbl)
|
|
la $i2,0($i2,$tbl)
|
|
la $i3,0($i3,$tbl)
|
|
llgc $t1,0($t1) # Te4[rk[11]>>0]
|
|
icm $t1,2,0($i1) # Te4[rk[11]>>8]<<8
|
|
icm $t1,4,0($i2) # Te4[rk[11]>>16]<<16
|
|
icm $t1,8,0($i3) # Te4[rk[11]>>24]<<24
|
|
x $t1,16($key) # rk[12]=rk[4]^...
|
|
st $t1,48($key)
|
|
x $t1,20($key) # rk[13]=rk[5]^rk[12]
|
|
st $t1,52($key)
|
|
x $t1,24($key) # rk[14]=rk[6]^rk[13]
|
|
st $t1,56($key)
|
|
x $t1,28($key) # rk[15]=rk[7]^rk[14]
|
|
st $t1,60($key)
|
|
|
|
srlg $i1,$t1,8
|
|
srlg $i2,$t1,16
|
|
srlg $i3,$t1,24
|
|
nr $t1,$mask
|
|
nr $i1,$mask
|
|
nr $i2,$mask
|
|
|
|
la $key,32($key) # key+=8
|
|
la $t3,4($t3) # i++
|
|
j .L256_loop
|
|
|
|
.Lminus1:
|
|
lghi %r2,-1
|
|
br $ra
|
|
.size AES_set_encrypt_key,.-AES_set_encrypt_key
|
|
|
|
# void AES_set_decrypt_key(const unsigned char *in, int bits,
|
|
# AES_KEY *key) {
|
|
.globl AES_set_decrypt_key
|
|
.type AES_set_decrypt_key,\@function
|
|
.align 16
|
|
AES_set_decrypt_key:
|
|
#st${g} $key,4*$SIZE_T($sp) # I rely on AES_set_encrypt_key to
|
|
st${g} $ra,14*$SIZE_T($sp) # save non-volatile registers and $key!
|
|
bras $ra,_s390x_AES_set_encrypt_key
|
|
#l${g} $key,4*$SIZE_T($sp)
|
|
l${g} $ra,14*$SIZE_T($sp)
|
|
ltgr %r2,%r2
|
|
bnzr $ra
|
|
___
|
|
$code.=<<___ if (!$softonly);
|
|
#l $t0,240($key)
|
|
lhi $t1,16
|
|
cr $t0,$t1
|
|
jl .Lgo
|
|
oill $t0,0x80 # set "decrypt" bit
|
|
st $t0,240($key)
|
|
br $ra
|
|
___
|
|
$code.=<<___;
|
|
.align 16
|
|
.Lgo: lgr $rounds,$t0 #llgf $rounds,240($key)
|
|
la $i1,0($key)
|
|
sllg $i2,$rounds,4
|
|
la $i2,0($i2,$key)
|
|
srl $rounds,1
|
|
lghi $t1,-16
|
|
|
|
.align 16
|
|
.Linv: lmg $s0,$s1,0($i1)
|
|
lmg $s2,$s3,0($i2)
|
|
stmg $s0,$s1,0($i2)
|
|
stmg $s2,$s3,0($i1)
|
|
la $i1,16($i1)
|
|
la $i2,0($t1,$i2)
|
|
brct $rounds,.Linv
|
|
___
|
|
$mask80=$i1;
|
|
$mask1b=$i2;
|
|
$maskfe=$i3;
|
|
$code.=<<___;
|
|
llgf $rounds,240($key)
|
|
aghi $rounds,-1
|
|
sll $rounds,2 # (rounds-1)*4
|
|
llilh $mask80,0x8080
|
|
llilh $mask1b,0x1b1b
|
|
llilh $maskfe,0xfefe
|
|
oill $mask80,0x8080
|
|
oill $mask1b,0x1b1b
|
|
oill $maskfe,0xfefe
|
|
|
|
.align 16
|
|
.Lmix: l $s0,16($key) # tp1
|
|
lr $s1,$s0
|
|
ngr $s1,$mask80
|
|
srlg $t1,$s1,7
|
|
slr $s1,$t1
|
|
nr $s1,$mask1b
|
|
sllg $t1,$s0,1
|
|
nr $t1,$maskfe
|
|
xr $s1,$t1 # tp2
|
|
|
|
lr $s2,$s1
|
|
ngr $s2,$mask80
|
|
srlg $t1,$s2,7
|
|
slr $s2,$t1
|
|
nr $s2,$mask1b
|
|
sllg $t1,$s1,1
|
|
nr $t1,$maskfe
|
|
xr $s2,$t1 # tp4
|
|
|
|
lr $s3,$s2
|
|
ngr $s3,$mask80
|
|
srlg $t1,$s3,7
|
|
slr $s3,$t1
|
|
nr $s3,$mask1b
|
|
sllg $t1,$s2,1
|
|
nr $t1,$maskfe
|
|
xr $s3,$t1 # tp8
|
|
|
|
xr $s1,$s0 # tp2^tp1
|
|
xr $s2,$s0 # tp4^tp1
|
|
rll $s0,$s0,24 # = ROTATE(tp1,8)
|
|
xr $s2,$s3 # ^=tp8
|
|
xr $s0,$s1 # ^=tp2^tp1
|
|
xr $s1,$s3 # tp2^tp1^tp8
|
|
xr $s0,$s2 # ^=tp4^tp1^tp8
|
|
rll $s1,$s1,8
|
|
rll $s2,$s2,16
|
|
xr $s0,$s1 # ^= ROTATE(tp8^tp2^tp1,24)
|
|
rll $s3,$s3,24
|
|
xr $s0,$s2 # ^= ROTATE(tp8^tp4^tp1,16)
|
|
xr $s0,$s3 # ^= ROTATE(tp8,8)
|
|
|
|
st $s0,16($key)
|
|
la $key,4($key)
|
|
brct $rounds,.Lmix
|
|
|
|
lm${g} %r6,%r13,6*$SIZE_T($sp)# as was saved by AES_set_encrypt_key!
|
|
lghi %r2,0
|
|
br $ra
|
|
.size AES_set_decrypt_key,.-AES_set_decrypt_key
|
|
___
|
|
|
|
########################################################################
|
|
# void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
|
|
# size_t length, const AES_KEY *key,
|
|
# unsigned char *ivec, const int enc)
|
|
{
|
|
my $inp="%r2";
|
|
my $out="%r4"; # length and out are swapped
|
|
my $len="%r3";
|
|
my $key="%r5";
|
|
my $ivp="%r6";
|
|
|
|
$code.=<<___;
|
|
.globl AES_cbc_encrypt
|
|
.type AES_cbc_encrypt,\@function
|
|
.align 16
|
|
AES_cbc_encrypt:
|
|
xgr %r3,%r4 # flip %r3 and %r4, out and len
|
|
xgr %r4,%r3
|
|
xgr %r3,%r4
|
|
___
|
|
$code.=<<___ if (!$softonly);
|
|
lhi %r0,16
|
|
cl %r0,240($key)
|
|
jh .Lcbc_software
|
|
|
|
lg %r0,0($ivp) # copy ivec
|
|
lg %r1,8($ivp)
|
|
stmg %r0,%r1,16($sp)
|
|
lmg %r0,%r1,0($key) # copy key, cover 256 bit
|
|
stmg %r0,%r1,32($sp)
|
|
lmg %r0,%r1,16($key)
|
|
stmg %r0,%r1,48($sp)
|
|
l %r0,240($key) # load kmc code
|
|
lghi $key,15 # res=len%16, len-=res;
|
|
ngr $key,$len
|
|
sl${g}r $len,$key
|
|
la %r1,16($sp) # parameter block - ivec || key
|
|
jz .Lkmc_truncated
|
|
.long 0xb92f0042 # kmc %r4,%r2
|
|
brc 1,.-4 # pay attention to "partial completion"
|
|
ltr $key,$key
|
|
jnz .Lkmc_truncated
|
|
.Lkmc_done:
|
|
lmg %r0,%r1,16($sp) # copy ivec to caller
|
|
stg %r0,0($ivp)
|
|
stg %r1,8($ivp)
|
|
br $ra
|
|
.align 16
|
|
.Lkmc_truncated:
|
|
ahi $key,-1 # it's the way it's encoded in mvc
|
|
tmll %r0,0x80
|
|
jnz .Lkmc_truncated_dec
|
|
lghi %r1,0
|
|
stg %r1,16*$SIZE_T($sp)
|
|
stg %r1,16*$SIZE_T+8($sp)
|
|
bras %r1,1f
|
|
mvc 16*$SIZE_T(1,$sp),0($inp)
|
|
1: ex $key,0(%r1)
|
|
la %r1,16($sp) # restore parameter block
|
|
la $inp,16*$SIZE_T($sp)
|
|
lghi $len,16
|
|
.long 0xb92f0042 # kmc %r4,%r2
|
|
j .Lkmc_done
|
|
.align 16
|
|
.Lkmc_truncated_dec:
|
|
st${g} $out,4*$SIZE_T($sp)
|
|
la $out,16*$SIZE_T($sp)
|
|
lghi $len,16
|
|
.long 0xb92f0042 # kmc %r4,%r2
|
|
l${g} $out,4*$SIZE_T($sp)
|
|
bras %r1,2f
|
|
mvc 0(1,$out),16*$SIZE_T($sp)
|
|
2: ex $key,0(%r1)
|
|
j .Lkmc_done
|
|
.align 16
|
|
.Lcbc_software:
|
|
___
|
|
$code.=<<___;
|
|
stm${g} $key,$ra,5*$SIZE_T($sp)
|
|
lhi %r0,0
|
|
cl %r0,`$stdframe+$SIZE_T-4`($sp)
|
|
je .Lcbc_decrypt
|
|
|
|
larl $tbl,AES_Te
|
|
|
|
llgf $s0,0($ivp)
|
|
llgf $s1,4($ivp)
|
|
llgf $s2,8($ivp)
|
|
llgf $s3,12($ivp)
|
|
|
|
lghi $t0,16
|
|
sl${g}r $len,$t0
|
|
brc 4,.Lcbc_enc_tail # if borrow
|
|
.Lcbc_enc_loop:
|
|
stm${g} $inp,$out,2*$SIZE_T($sp)
|
|
x $s0,0($inp)
|
|
x $s1,4($inp)
|
|
x $s2,8($inp)
|
|
x $s3,12($inp)
|
|
lgr %r4,$key
|
|
|
|
bras $ra,_s390x_AES_encrypt
|
|
|
|
lm${g} $inp,$key,2*$SIZE_T($sp)
|
|
st $s0,0($out)
|
|
st $s1,4($out)
|
|
st $s2,8($out)
|
|
st $s3,12($out)
|
|
|
|
la $inp,16($inp)
|
|
la $out,16($out)
|
|
lghi $t0,16
|
|
lt${g}r $len,$len
|
|
jz .Lcbc_enc_done
|
|
sl${g}r $len,$t0
|
|
brc 4,.Lcbc_enc_tail # if borrow
|
|
j .Lcbc_enc_loop
|
|
.align 16
|
|
.Lcbc_enc_done:
|
|
l${g} $ivp,6*$SIZE_T($sp)
|
|
st $s0,0($ivp)
|
|
st $s1,4($ivp)
|
|
st $s2,8($ivp)
|
|
st $s3,12($ivp)
|
|
|
|
lm${g} %r7,$ra,7*$SIZE_T($sp)
|
|
br $ra
|
|
|
|
.align 16
|
|
.Lcbc_enc_tail:
|
|
aghi $len,15
|
|
lghi $t0,0
|
|
stg $t0,16*$SIZE_T($sp)
|
|
stg $t0,16*$SIZE_T+8($sp)
|
|
bras $t1,3f
|
|
mvc 16*$SIZE_T(1,$sp),0($inp)
|
|
3: ex $len,0($t1)
|
|
lghi $len,0
|
|
la $inp,16*$SIZE_T($sp)
|
|
j .Lcbc_enc_loop
|
|
|
|
.align 16
|
|
.Lcbc_decrypt:
|
|
larl $tbl,AES_Td
|
|
|
|
lg $t0,0($ivp)
|
|
lg $t1,8($ivp)
|
|
stmg $t0,$t1,16*$SIZE_T($sp)
|
|
|
|
.Lcbc_dec_loop:
|
|
stm${g} $inp,$out,2*$SIZE_T($sp)
|
|
llgf $s0,0($inp)
|
|
llgf $s1,4($inp)
|
|
llgf $s2,8($inp)
|
|
llgf $s3,12($inp)
|
|
lgr %r4,$key
|
|
|
|
bras $ra,_s390x_AES_decrypt
|
|
|
|
lm${g} $inp,$key,2*$SIZE_T($sp)
|
|
sllg $s0,$s0,32
|
|
sllg $s2,$s2,32
|
|
lr $s0,$s1
|
|
lr $s2,$s3
|
|
|
|
lg $t0,0($inp)
|
|
lg $t1,8($inp)
|
|
xg $s0,16*$SIZE_T($sp)
|
|
xg $s2,16*$SIZE_T+8($sp)
|
|
lghi $s1,16
|
|
sl${g}r $len,$s1
|
|
brc 4,.Lcbc_dec_tail # if borrow
|
|
brc 2,.Lcbc_dec_done # if zero
|
|
stg $s0,0($out)
|
|
stg $s2,8($out)
|
|
stmg $t0,$t1,16*$SIZE_T($sp)
|
|
|
|
la $inp,16($inp)
|
|
la $out,16($out)
|
|
j .Lcbc_dec_loop
|
|
|
|
.Lcbc_dec_done:
|
|
stg $s0,0($out)
|
|
stg $s2,8($out)
|
|
.Lcbc_dec_exit:
|
|
lm${g} %r6,$ra,6*$SIZE_T($sp)
|
|
stmg $t0,$t1,0($ivp)
|
|
|
|
br $ra
|
|
|
|
.align 16
|
|
.Lcbc_dec_tail:
|
|
aghi $len,15
|
|
stg $s0,16*$SIZE_T($sp)
|
|
stg $s2,16*$SIZE_T+8($sp)
|
|
bras $s1,4f
|
|
mvc 0(1,$out),16*$SIZE_T($sp)
|
|
4: ex $len,0($s1)
|
|
j .Lcbc_dec_exit
|
|
.size AES_cbc_encrypt,.-AES_cbc_encrypt
|
|
___
|
|
}
|
|
########################################################################
|
|
# void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out,
|
|
# size_t blocks, const AES_KEY *key,
|
|
# const unsigned char *ivec)
|
|
{
|
|
my $inp="%r2";
|
|
my $out="%r4"; # blocks and out are swapped
|
|
my $len="%r3";
|
|
my $key="%r5"; my $iv0="%r5";
|
|
my $ivp="%r6";
|
|
my $fp ="%r7";
|
|
|
|
$code.=<<___;
|
|
.globl AES_ctr32_encrypt
|
|
.type AES_ctr32_encrypt,\@function
|
|
.align 16
|
|
AES_ctr32_encrypt:
|
|
xgr %r3,%r4 # flip %r3 and %r4, $out and $len
|
|
xgr %r4,%r3
|
|
xgr %r3,%r4
|
|
llgfr $len,$len # safe in ctr32 subroutine even in 64-bit case
|
|
___
|
|
$code.=<<___ if (!$softonly);
|
|
l %r0,240($key)
|
|
lhi %r1,16
|
|
clr %r0,%r1
|
|
jl .Lctr32_software
|
|
|
|
stm${g} %r6,$s3,6*$SIZE_T($sp)
|
|
|
|
slgr $out,$inp
|
|
la %r1,0($key) # %r1 is permanent copy of $key
|
|
lg $iv0,0($ivp) # load ivec
|
|
lg $ivp,8($ivp)
|
|
|
|
# prepare and allocate stack frame at the top of 4K page
|
|
# with 1K reserved for eventual signal handling
|
|
lghi $s0,-1024-256-16# guarantee at least 256-bytes buffer
|
|
lghi $s1,-4096
|
|
algr $s0,$sp
|
|
lgr $fp,$sp
|
|
ngr $s0,$s1 # align at page boundary
|
|
slgr $fp,$s0 # total buffer size
|
|
lgr $s2,$sp
|
|
lghi $s1,1024+16 # sl[g]fi is extended-immediate facility
|
|
slgr $fp,$s1 # deduct reservation to get usable buffer size
|
|
# buffer size is at lest 256 and at most 3072+256-16
|
|
|
|
la $sp,1024($s0) # alloca
|
|
srlg $fp,$fp,4 # convert bytes to blocks, minimum 16
|
|
st${g} $s2,0($sp) # back-chain
|
|
st${g} $fp,$SIZE_T($sp)
|
|
|
|
slgr $len,$fp
|
|
brc 1,.Lctr32_hw_switch # not zero, no borrow
|
|
algr $fp,$len # input is shorter than allocated buffer
|
|
lghi $len,0
|
|
st${g} $fp,$SIZE_T($sp)
|
|
|
|
.Lctr32_hw_switch:
|
|
___
|
|
$code.=<<___ if (0); ######### kmctr code was measured to be ~12% slower
|
|
larl $s0,OPENSSL_s390xcap_P
|
|
lg $s0,8($s0)
|
|
tmhh $s0,0x0004 # check for message_security-assist-4
|
|
jz .Lctr32_km_loop
|
|
|
|
llgfr $s0,%r0
|
|
lgr $s1,%r1
|
|
lghi %r0,0
|
|
la %r1,16($sp)
|
|
.long 0xb92d2042 # kmctr %r4,%r2,%r2
|
|
|
|
llihh %r0,0x8000 # check if kmctr supports the function code
|
|
srlg %r0,%r0,0($s0)
|
|
ng %r0,16($sp)
|
|
lgr %r0,$s0
|
|
lgr %r1,$s1
|
|
jz .Lctr32_km_loop
|
|
|
|
####### kmctr code
|
|
algr $out,$inp # restore $out
|
|
lgr $s1,$len # $s1 undertakes $len
|
|
j .Lctr32_kmctr_loop
|
|
.align 16
|
|
.Lctr32_kmctr_loop:
|
|
la $s2,16($sp)
|
|
lgr $s3,$fp
|
|
.Lctr32_kmctr_prepare:
|
|
stg $iv0,0($s2)
|
|
stg $ivp,8($s2)
|
|
la $s2,16($s2)
|
|
ahi $ivp,1 # 32-bit increment, preserves upper half
|
|
brct $s3,.Lctr32_kmctr_prepare
|
|
|
|
#la $inp,0($inp) # inp
|
|
sllg $len,$fp,4 # len
|
|
#la $out,0($out) # out
|
|
la $s2,16($sp) # iv
|
|
.long 0xb92da042 # kmctr $out,$s2,$inp
|
|
brc 1,.-4 # pay attention to "partial completion"
|
|
|
|
slgr $s1,$fp
|
|
brc 1,.Lctr32_kmctr_loop # not zero, no borrow
|
|
algr $fp,$s1
|
|
lghi $s1,0
|
|
brc 4+1,.Lctr32_kmctr_loop # not zero
|
|
|
|
l${g} $sp,0($sp)
|
|
lm${g} %r6,$s3,6*$SIZE_T($sp)
|
|
br $ra
|
|
.align 16
|
|
___
|
|
$code.=<<___;
|
|
.Lctr32_km_loop:
|
|
la $s2,16($sp)
|
|
lgr $s3,$fp
|
|
.Lctr32_km_prepare:
|
|
stg $iv0,0($s2)
|
|
stg $ivp,8($s2)
|
|
la $s2,16($s2)
|
|
ahi $ivp,1 # 32-bit increment, preserves upper half
|
|
brct $s3,.Lctr32_km_prepare
|
|
|
|
la $s0,16($sp) # inp
|
|
sllg $s1,$fp,4 # len
|
|
la $s2,16($sp) # out
|
|
.long 0xb92e00a8 # km %r10,%r8
|
|
brc 1,.-4 # pay attention to "partial completion"
|
|
|
|
la $s2,16($sp)
|
|
lgr $s3,$fp
|
|
slgr $s2,$inp
|
|
.Lctr32_km_xor:
|
|
lg $s0,0($inp)
|
|
lg $s1,8($inp)
|
|
xg $s0,0($s2,$inp)
|
|
xg $s1,8($s2,$inp)
|
|
stg $s0,0($out,$inp)
|
|
stg $s1,8($out,$inp)
|
|
la $inp,16($inp)
|
|
brct $s3,.Lctr32_km_xor
|
|
|
|
slgr $len,$fp
|
|
brc 1,.Lctr32_km_loop # not zero, no borrow
|
|
algr $fp,$len
|
|
lghi $len,0
|
|
brc 4+1,.Lctr32_km_loop # not zero
|
|
|
|
l${g} $s0,0($sp)
|
|
l${g} $s1,$SIZE_T($sp)
|
|
la $s2,16($sp)
|
|
.Lctr32_km_zap:
|
|
stg $s0,0($s2)
|
|
stg $s0,8($s2)
|
|
la $s2,16($s2)
|
|
brct $s1,.Lctr32_km_zap
|
|
|
|
la $sp,0($s0)
|
|
lm${g} %r6,$s3,6*$SIZE_T($sp)
|
|
br $ra
|
|
.align 16
|
|
.Lctr32_software:
|
|
___
|
|
$code.=<<___;
|
|
stm${g} $key,$ra,5*$SIZE_T($sp)
|
|
sl${g}r $inp,$out
|
|
larl $tbl,AES_Te
|
|
llgf $t1,12($ivp)
|
|
|
|
.Lctr32_loop:
|
|
stm${g} $inp,$out,2*$SIZE_T($sp)
|
|
llgf $s0,0($ivp)
|
|
llgf $s1,4($ivp)
|
|
llgf $s2,8($ivp)
|
|
lgr $s3,$t1
|
|
st $t1,16*$SIZE_T($sp)
|
|
lgr %r4,$key
|
|
|
|
bras $ra,_s390x_AES_encrypt
|
|
|
|
lm${g} $inp,$ivp,2*$SIZE_T($sp)
|
|
llgf $t1,16*$SIZE_T($sp)
|
|
x $s0,0($inp,$out)
|
|
x $s1,4($inp,$out)
|
|
x $s2,8($inp,$out)
|
|
x $s3,12($inp,$out)
|
|
stm $s0,$s3,0($out)
|
|
|
|
la $out,16($out)
|
|
ahi $t1,1 # 32-bit increment
|
|
brct $len,.Lctr32_loop
|
|
|
|
lm${g} %r6,$ra,6*$SIZE_T($sp)
|
|
br $ra
|
|
.size AES_ctr32_encrypt,.-AES_ctr32_encrypt
|
|
___
|
|
}
|
|
|
|
########################################################################
|
|
# void AES_xts_encrypt(const char *inp,char *out,size_t len,
|
|
# const AES_KEY *key1, const AES_KEY *key2,
|
|
# const unsigned char iv[16]);
|
|
#
|
|
{
|
|
my $inp="%r2";
|
|
my $out="%r4"; # len and out are swapped
|
|
my $len="%r3";
|
|
my $key1="%r5"; # $i1
|
|
my $key2="%r6"; # $i2
|
|
my $fp="%r7"; # $i3
|
|
my $tweak=16*$SIZE_T+16; # or $stdframe-16, bottom of the frame...
|
|
|
|
$code.=<<___;
|
|
.type _s390x_xts_km,\@function
|
|
.align 16
|
|
_s390x_xts_km:
|
|
___
|
|
$code.=<<___ if(1);
|
|
llgfr $s0,%r0 # put aside the function code
|
|
lghi $s1,0x7f
|
|
nr $s1,%r0
|
|
lghi %r0,0 # query capability vector
|
|
la %r1,2*$SIZE_T($sp)
|
|
.long 0xb92e0042 # km %r4,%r2
|
|
llihh %r1,0x8000
|
|
srlg %r1,%r1,32($s1) # check for 32+function code
|
|
ng %r1,2*$SIZE_T($sp)
|
|
lgr %r0,$s0 # restore the function code
|
|
la %r1,0($key1) # restore $key1
|
|
jz .Lxts_km_vanilla
|
|
|
|
lmg $i2,$i3,$tweak($sp) # put aside the tweak value
|
|
algr $out,$inp
|
|
|
|
oill %r0,32 # switch to xts function code
|
|
aghi $s1,-18 #
|
|
sllg $s1,$s1,3 # (function code - 18)*8, 0 or 16
|
|
la %r1,$tweak-16($sp)
|
|
slgr %r1,$s1 # parameter block position
|
|
lmg $s0,$s3,0($key1) # load 256 bits of key material,
|
|
stmg $s0,$s3,0(%r1) # and copy it to parameter block.
|
|
# yes, it contains junk and overlaps
|
|
# with the tweak in 128-bit case.
|
|
# it's done to avoid conditional
|
|
# branch.
|
|
stmg $i2,$i3,$tweak($sp) # "re-seat" the tweak value
|
|
|
|
.long 0xb92e0042 # km %r4,%r2
|
|
brc 1,.-4 # pay attention to "partial completion"
|
|
|
|
lrvg $s0,$tweak+0($sp) # load the last tweak
|
|
lrvg $s1,$tweak+8($sp)
|
|
stmg %r0,%r3,$tweak-32(%r1) # wipe copy of the key
|
|
|
|
nill %r0,0xffdf # switch back to original function code
|
|
la %r1,0($key1) # restore pointer to $key1
|
|
slgr $out,$inp
|
|
|
|
llgc $len,2*$SIZE_T-1($sp)
|
|
nill $len,0x0f # $len%=16
|
|
br $ra
|
|
|
|
.align 16
|
|
.Lxts_km_vanilla:
|
|
___
|
|
$code.=<<___;
|
|
# prepare and allocate stack frame at the top of 4K page
|
|
# with 1K reserved for eventual signal handling
|
|
lghi $s0,-1024-256-16# guarantee at least 256-bytes buffer
|
|
lghi $s1,-4096
|
|
algr $s0,$sp
|
|
lgr $fp,$sp
|
|
ngr $s0,$s1 # align at page boundary
|
|
slgr $fp,$s0 # total buffer size
|
|
lgr $s2,$sp
|
|
lghi $s1,1024+16 # sl[g]fi is extended-immediate facility
|
|
slgr $fp,$s1 # deduct reservation to get usable buffer size
|
|
# buffer size is at lest 256 and at most 3072+256-16
|
|
|
|
la $sp,1024($s0) # alloca
|
|
nill $fp,0xfff0 # round to 16*n
|
|
st${g} $s2,0($sp) # back-chain
|
|
nill $len,0xfff0 # redundant
|
|
st${g} $fp,$SIZE_T($sp)
|
|
|
|
slgr $len,$fp
|
|
brc 1,.Lxts_km_go # not zero, no borrow
|
|
algr $fp,$len # input is shorter than allocated buffer
|
|
lghi $len,0
|
|
st${g} $fp,$SIZE_T($sp)
|
|
|
|
.Lxts_km_go:
|
|
lrvg $s0,$tweak+0($s2) # load the tweak value in little-endian
|
|
lrvg $s1,$tweak+8($s2)
|
|
|
|
la $s2,16($sp) # vector of ascending tweak values
|
|
slgr $s2,$inp
|
|
srlg $s3,$fp,4
|
|
j .Lxts_km_start
|
|
|
|
.Lxts_km_loop:
|
|
la $s2,16($sp)
|
|
slgr $s2,$inp
|
|
srlg $s3,$fp,4
|
|
.Lxts_km_prepare:
|
|
lghi $i1,0x87
|
|
srag $i2,$s1,63 # broadcast upper bit
|
|
ngr $i1,$i2 # rem
|
|
srlg $i2,$s0,63 # carry bit from lower half
|
|
sllg $s0,$s0,1
|
|
sllg $s1,$s1,1
|
|
xgr $s0,$i1
|
|
ogr $s1,$i2
|
|
.Lxts_km_start:
|
|
lrvgr $i1,$s0 # flip byte order
|
|
lrvgr $i2,$s1
|
|
stg $i1,0($s2,$inp)
|
|
stg $i2,8($s2,$inp)
|
|
xg $i1,0($inp)
|
|
xg $i2,8($inp)
|
|
stg $i1,0($out,$inp)
|
|
stg $i2,8($out,$inp)
|
|
la $inp,16($inp)
|
|
brct $s3,.Lxts_km_prepare
|
|
|
|
slgr $inp,$fp # rewind $inp
|
|
la $s2,0($out,$inp)
|
|
lgr $s3,$fp
|
|
.long 0xb92e00aa # km $s2,$s2
|
|
brc 1,.-4 # pay attention to "partial completion"
|
|
|
|
la $s2,16($sp)
|
|
slgr $s2,$inp
|
|
srlg $s3,$fp,4
|
|
.Lxts_km_xor:
|
|
lg $i1,0($out,$inp)
|
|
lg $i2,8($out,$inp)
|
|
xg $i1,0($s2,$inp)
|
|
xg $i2,8($s2,$inp)
|
|
stg $i1,0($out,$inp)
|
|
stg $i2,8($out,$inp)
|
|
la $inp,16($inp)
|
|
brct $s3,.Lxts_km_xor
|
|
|
|
slgr $len,$fp
|
|
brc 1,.Lxts_km_loop # not zero, no borrow
|
|
algr $fp,$len
|
|
lghi $len,0
|
|
brc 4+1,.Lxts_km_loop # not zero
|
|
|
|
l${g} $i1,0($sp) # back-chain
|
|
llgf $fp,`2*$SIZE_T-4`($sp) # bytes used
|
|
la $i2,16($sp)
|
|
srlg $fp,$fp,4
|
|
.Lxts_km_zap:
|
|
stg $i1,0($i2)
|
|
stg $i1,8($i2)
|
|
la $i2,16($i2)
|
|
brct $fp,.Lxts_km_zap
|
|
|
|
la $sp,0($i1)
|
|
llgc $len,2*$SIZE_T-1($i1)
|
|
nill $len,0x0f # $len%=16
|
|
bzr $ra
|
|
|
|
# generate one more tweak...
|
|
lghi $i1,0x87
|
|
srag $i2,$s1,63 # broadcast upper bit
|
|
ngr $i1,$i2 # rem
|
|
srlg $i2,$s0,63 # carry bit from lower half
|
|
sllg $s0,$s0,1
|
|
sllg $s1,$s1,1
|
|
xgr $s0,$i1
|
|
ogr $s1,$i2
|
|
|
|
ltr $len,$len # clear zero flag
|
|
br $ra
|
|
.size _s390x_xts_km,.-_s390x_xts_km
|
|
|
|
.globl AES_xts_encrypt
|
|
.type AES_xts_encrypt,\@function
|
|
.align 16
|
|
AES_xts_encrypt:
|
|
xgr %r3,%r4 # flip %r3 and %r4, $out and $len
|
|
xgr %r4,%r3
|
|
xgr %r3,%r4
|
|
___
|
|
$code.=<<___ if ($SIZE_T==4);
|
|
llgfr $len,$len
|
|
___
|
|
$code.=<<___;
|
|
st${g} $len,1*$SIZE_T($sp) # save copy of $len
|
|
srag $len,$len,4 # formally wrong, because it expands
|
|
# sign byte, but who can afford asking
|
|
# to process more than 2^63-1 bytes?
|
|
# I use it, because it sets condition
|
|
# code...
|
|
bcr 8,$ra # abort if zero (i.e. less than 16)
|
|
___
|
|
$code.=<<___ if (!$softonly);
|
|
llgf %r0,240($key2)
|
|
lhi %r1,16
|
|
clr %r0,%r1
|
|
jl .Lxts_enc_software
|
|
|
|
stm${g} %r6,$s3,6*$SIZE_T($sp)
|
|
st${g} $ra,14*$SIZE_T($sp)
|
|
|
|
sllg $len,$len,4 # $len&=~15
|
|
slgr $out,$inp
|
|
|
|
# generate the tweak value
|
|
l${g} $s3,$stdframe($sp) # pointer to iv
|
|
la $s2,$tweak($sp)
|
|
lmg $s0,$s1,0($s3)
|
|
lghi $s3,16
|
|
stmg $s0,$s1,0($s2)
|
|
la %r1,0($key2) # $key2 is not needed anymore
|
|
.long 0xb92e00aa # km $s2,$s2, generate the tweak
|
|
brc 1,.-4 # can this happen?
|
|
|
|
l %r0,240($key1)
|
|
la %r1,0($key1) # $key1 is not needed anymore
|
|
bras $ra,_s390x_xts_km
|
|
jz .Lxts_enc_km_done
|
|
|
|
aghi $inp,-16 # take one step back
|
|
la $i3,0($out,$inp) # put aside real $out
|
|
.Lxts_enc_km_steal:
|
|
llgc $i1,16($inp)
|
|
llgc $i2,0($out,$inp)
|
|
stc $i1,0($out,$inp)
|
|
stc $i2,16($out,$inp)
|
|
la $inp,1($inp)
|
|
brct $len,.Lxts_enc_km_steal
|
|
|
|
la $s2,0($i3)
|
|
lghi $s3,16
|
|
lrvgr $i1,$s0 # flip byte order
|
|
lrvgr $i2,$s1
|
|
xg $i1,0($s2)
|
|
xg $i2,8($s2)
|
|
stg $i1,0($s2)
|
|
stg $i2,8($s2)
|
|
.long 0xb92e00aa # km $s2,$s2
|
|
brc 1,.-4 # can this happen?
|
|
lrvgr $i1,$s0 # flip byte order
|
|
lrvgr $i2,$s1
|
|
xg $i1,0($i3)
|
|
xg $i2,8($i3)
|
|
stg $i1,0($i3)
|
|
stg $i2,8($i3)
|
|
|
|
.Lxts_enc_km_done:
|
|
l${g} $ra,14*$SIZE_T($sp)
|
|
st${g} $sp,$tweak($sp) # wipe tweak
|
|
st${g} $sp,$tweak($sp)
|
|
lm${g} %r6,$s3,6*$SIZE_T($sp)
|
|
br $ra
|
|
.align 16
|
|
.Lxts_enc_software:
|
|
___
|
|
$code.=<<___;
|
|
stm${g} %r6,$ra,6*$SIZE_T($sp)
|
|
|
|
slgr $out,$inp
|
|
|
|
xgr $s0,$s0 # clear upper half
|
|
xgr $s1,$s1
|
|
lrv $s0,$stdframe+4($sp) # load secno
|
|
lrv $s1,$stdframe+0($sp)
|
|
xgr $s2,$s2
|
|
xgr $s3,$s3
|
|
stm${g} %r2,%r5,2*$SIZE_T($sp)
|
|
la $key,0($key2)
|
|
larl $tbl,AES_Te
|
|
bras $ra,_s390x_AES_encrypt # generate the tweak
|
|
lm${g} %r2,%r5,2*$SIZE_T($sp)
|
|
stm $s0,$s3,$tweak($sp) # save the tweak
|
|
j .Lxts_enc_enter
|
|
|
|
.align 16
|
|
.Lxts_enc_loop:
|
|
lrvg $s1,$tweak+0($sp) # load the tweak in little-endian
|
|
lrvg $s3,$tweak+8($sp)
|
|
lghi %r1,0x87
|
|
srag %r0,$s3,63 # broadcast upper bit
|
|
ngr %r1,%r0 # rem
|
|
srlg %r0,$s1,63 # carry bit from lower half
|
|
sllg $s1,$s1,1
|
|
sllg $s3,$s3,1
|
|
xgr $s1,%r1
|
|
ogr $s3,%r0
|
|
lrvgr $s1,$s1 # flip byte order
|
|
lrvgr $s3,$s3
|
|
srlg $s0,$s1,32 # smash the tweak to 4x32-bits
|
|
stg $s1,$tweak+0($sp) # save the tweak
|
|
llgfr $s1,$s1
|
|
srlg $s2,$s3,32
|
|
stg $s3,$tweak+8($sp)
|
|
llgfr $s3,$s3
|
|
la $inp,16($inp) # $inp+=16
|
|
.Lxts_enc_enter:
|
|
x $s0,0($inp) # ^=*($inp)
|
|
x $s1,4($inp)
|
|
x $s2,8($inp)
|
|
x $s3,12($inp)
|
|
stm${g} %r2,%r3,2*$SIZE_T($sp) # only two registers are changing
|
|
la $key,0($key1)
|
|
bras $ra,_s390x_AES_encrypt
|
|
lm${g} %r2,%r5,2*$SIZE_T($sp)
|
|
x $s0,$tweak+0($sp) # ^=tweak
|
|
x $s1,$tweak+4($sp)
|
|
x $s2,$tweak+8($sp)
|
|
x $s3,$tweak+12($sp)
|
|
st $s0,0($out,$inp)
|
|
st $s1,4($out,$inp)
|
|
st $s2,8($out,$inp)
|
|
st $s3,12($out,$inp)
|
|
brct${g} $len,.Lxts_enc_loop
|
|
|
|
llgc $len,`2*$SIZE_T-1`($sp)
|
|
nill $len,0x0f # $len%16
|
|
jz .Lxts_enc_done
|
|
|
|
la $i3,0($inp,$out) # put aside real $out
|
|
.Lxts_enc_steal:
|
|
llgc %r0,16($inp)
|
|
llgc %r1,0($out,$inp)
|
|
stc %r0,0($out,$inp)
|
|
stc %r1,16($out,$inp)
|
|
la $inp,1($inp)
|
|
brct $len,.Lxts_enc_steal
|
|
la $out,0($i3) # restore real $out
|
|
|
|
# generate last tweak...
|
|
lrvg $s1,$tweak+0($sp) # load the tweak in little-endian
|
|
lrvg $s3,$tweak+8($sp)
|
|
lghi %r1,0x87
|
|
srag %r0,$s3,63 # broadcast upper bit
|
|
ngr %r1,%r0 # rem
|
|
srlg %r0,$s1,63 # carry bit from lower half
|
|
sllg $s1,$s1,1
|
|
sllg $s3,$s3,1
|
|
xgr $s1,%r1
|
|
ogr $s3,%r0
|
|
lrvgr $s1,$s1 # flip byte order
|
|
lrvgr $s3,$s3
|
|
srlg $s0,$s1,32 # smash the tweak to 4x32-bits
|
|
stg $s1,$tweak+0($sp) # save the tweak
|
|
llgfr $s1,$s1
|
|
srlg $s2,$s3,32
|
|
stg $s3,$tweak+8($sp)
|
|
llgfr $s3,$s3
|
|
|
|
x $s0,0($out) # ^=*(inp)|stolen cipther-text
|
|
x $s1,4($out)
|
|
x $s2,8($out)
|
|
x $s3,12($out)
|
|
st${g} $out,4*$SIZE_T($sp)
|
|
la $key,0($key1)
|
|
bras $ra,_s390x_AES_encrypt
|
|
l${g} $out,4*$SIZE_T($sp)
|
|
x $s0,`$tweak+0`($sp) # ^=tweak
|
|
x $s1,`$tweak+4`($sp)
|
|
x $s2,`$tweak+8`($sp)
|
|
x $s3,`$tweak+12`($sp)
|
|
st $s0,0($out)
|
|
st $s1,4($out)
|
|
st $s2,8($out)
|
|
st $s3,12($out)
|
|
|
|
.Lxts_enc_done:
|
|
stg $sp,$tweak+0($sp) # wipe tweak
|
|
stg $sp,$twesk+8($sp)
|
|
lm${g} %r6,$ra,6*$SIZE_T($sp)
|
|
br $ra
|
|
.size AES_xts_encrypt,.-AES_xts_encrypt
|
|
___
|
|
# void AES_xts_decrypt(const char *inp,char *out,size_t len,
|
|
# const AES_KEY *key1, const AES_KEY *key2,u64 secno);
|
|
#
|
|
$code.=<<___;
|
|
.globl AES_xts_decrypt
|
|
.type AES_xts_decrypt,\@function
|
|
.align 16
|
|
AES_xts_decrypt:
|
|
xgr %r3,%r4 # flip %r3 and %r4, $out and $len
|
|
xgr %r4,%r3
|
|
xgr %r3,%r4
|
|
___
|
|
$code.=<<___ if ($SIZE_T==4);
|
|
llgfr $len,$len
|
|
___
|
|
$code.=<<___;
|
|
st${g} $len,1*$SIZE_T($sp) # save copy of $len
|
|
aghi $len,-16
|
|
bcr 4,$ra # abort if less than zero. formally
|
|
# wrong, because $len is unsigned,
|
|
# but who can afford asking to
|
|
# process more than 2^63-1 bytes?
|
|
tmll $len,0x0f
|
|
jnz .Lxts_dec_proceed
|
|
aghi $len,16
|
|
.Lxts_dec_proceed:
|
|
___
|
|
$code.=<<___ if (!$softonly);
|
|
llgf %r0,240($key2)
|
|
lhi %r1,16
|
|
clr %r0,%r1
|
|
jl .Lxts_dec_software
|
|
|
|
stm${g} %r6,$s3,6*$SIZE_T($sp)
|
|
st${g} $ra,14*$SIZE_T($sp)
|
|
|
|
nill $len,0xfff0 # $len&=~15
|
|
slgr $out,$inp
|
|
|
|
# generate the tweak value
|
|
l${g} $s3,$stdframe($sp) # pointer to iv
|
|
la $s2,$tweak($sp)
|
|
lmg $s0,$s1,0($s3)
|
|
lghi $s3,16
|
|
stmg $s0,$s1,0($s2)
|
|
la %r1,0($key2) # $key2 is not needed past this point
|
|
.long 0xb92e00aa # km $s2,$s2, generate the tweak
|
|
brc 1,.-4 # can this happen?
|
|
|
|
l %r0,240($key1)
|
|
la %r1,0($key1) # $key1 is not needed anymore
|
|
|
|
ltgr $len,$len
|
|
jz .Lxts_dec_km_short
|
|
bras $ra,_s390x_xts_km
|
|
jz .Lxts_dec_km_done
|
|
|
|
lrvgr $s2,$s0 # make copy in reverse byte order
|
|
lrvgr $s3,$s1
|
|
j .Lxts_dec_km_2ndtweak
|
|
|
|
.Lxts_dec_km_short:
|
|
llgc $len,`2*$SIZE_T-1`($sp)
|
|
nill $len,0x0f # $len%=16
|
|
lrvg $s0,$tweak+0($sp) # load the tweak
|
|
lrvg $s1,$tweak+8($sp)
|
|
lrvgr $s2,$s0 # make copy in reverse byte order
|
|
lrvgr $s3,$s1
|
|
|
|
.Lxts_dec_km_2ndtweak:
|
|
lghi $i1,0x87
|
|
srag $i2,$s1,63 # broadcast upper bit
|
|
ngr $i1,$i2 # rem
|
|
srlg $i2,$s0,63 # carry bit from lower half
|
|
sllg $s0,$s0,1
|
|
sllg $s1,$s1,1
|
|
xgr $s0,$i1
|
|
ogr $s1,$i2
|
|
lrvgr $i1,$s0 # flip byte order
|
|
lrvgr $i2,$s1
|
|
|
|
xg $i1,0($inp)
|
|
xg $i2,8($inp)
|
|
stg $i1,0($out,$inp)
|
|
stg $i2,8($out,$inp)
|
|
la $i2,0($out,$inp)
|
|
lghi $i3,16
|
|
.long 0xb92e0066 # km $i2,$i2
|
|
brc 1,.-4 # can this happen?
|
|
lrvgr $i1,$s0
|
|
lrvgr $i2,$s1
|
|
xg $i1,0($out,$inp)
|
|
xg $i2,8($out,$inp)
|
|
stg $i1,0($out,$inp)
|
|
stg $i2,8($out,$inp)
|
|
|
|
la $i3,0($out,$inp) # put aside real $out
|
|
.Lxts_dec_km_steal:
|
|
llgc $i1,16($inp)
|
|
llgc $i2,0($out,$inp)
|
|
stc $i1,0($out,$inp)
|
|
stc $i2,16($out,$inp)
|
|
la $inp,1($inp)
|
|
brct $len,.Lxts_dec_km_steal
|
|
|
|
lgr $s0,$s2
|
|
lgr $s1,$s3
|
|
xg $s0,0($i3)
|
|
xg $s1,8($i3)
|
|
stg $s0,0($i3)
|
|
stg $s1,8($i3)
|
|
la $s0,0($i3)
|
|
lghi $s1,16
|
|
.long 0xb92e0088 # km $s0,$s0
|
|
brc 1,.-4 # can this happen?
|
|
xg $s2,0($i3)
|
|
xg $s3,8($i3)
|
|
stg $s2,0($i3)
|
|
stg $s3,8($i3)
|
|
.Lxts_dec_km_done:
|
|
l${g} $ra,14*$SIZE_T($sp)
|
|
st${g} $sp,$tweak($sp) # wipe tweak
|
|
st${g} $sp,$tweak($sp)
|
|
lm${g} %r6,$s3,6*$SIZE_T($sp)
|
|
br $ra
|
|
.align 16
|
|
.Lxts_dec_software:
|
|
___
|
|
$code.=<<___;
|
|
stm${g} %r6,$ra,6*$SIZE_T($sp)
|
|
|
|
srlg $len,$len,4
|
|
slgr $out,$inp
|
|
|
|
xgr $s0,$s0 # clear upper half
|
|
xgr $s1,$s1
|
|
lrv $s0,$stdframe+4($sp) # load secno
|
|
lrv $s1,$stdframe+0($sp)
|
|
xgr $s2,$s2
|
|
xgr $s3,$s3
|
|
stm${g} %r2,%r5,2*$SIZE_T($sp)
|
|
la $key,0($key2)
|
|
larl $tbl,AES_Te
|
|
bras $ra,_s390x_AES_encrypt # generate the tweak
|
|
lm${g} %r2,%r5,2*$SIZE_T($sp)
|
|
larl $tbl,AES_Td
|
|
lt${g}r $len,$len
|
|
stm $s0,$s3,$tweak($sp) # save the tweak
|
|
jz .Lxts_dec_short
|
|
j .Lxts_dec_enter
|
|
|
|
.align 16
|
|
.Lxts_dec_loop:
|
|
lrvg $s1,$tweak+0($sp) # load the tweak in little-endian
|
|
lrvg $s3,$tweak+8($sp)
|
|
lghi %r1,0x87
|
|
srag %r0,$s3,63 # broadcast upper bit
|
|
ngr %r1,%r0 # rem
|
|
srlg %r0,$s1,63 # carry bit from lower half
|
|
sllg $s1,$s1,1
|
|
sllg $s3,$s3,1
|
|
xgr $s1,%r1
|
|
ogr $s3,%r0
|
|
lrvgr $s1,$s1 # flip byte order
|
|
lrvgr $s3,$s3
|
|
srlg $s0,$s1,32 # smash the tweak to 4x32-bits
|
|
stg $s1,$tweak+0($sp) # save the tweak
|
|
llgfr $s1,$s1
|
|
srlg $s2,$s3,32
|
|
stg $s3,$tweak+8($sp)
|
|
llgfr $s3,$s3
|
|
.Lxts_dec_enter:
|
|
x $s0,0($inp) # tweak^=*(inp)
|
|
x $s1,4($inp)
|
|
x $s2,8($inp)
|
|
x $s3,12($inp)
|
|
stm${g} %r2,%r3,2*$SIZE_T($sp) # only two registers are changing
|
|
la $key,0($key1)
|
|
bras $ra,_s390x_AES_decrypt
|
|
lm${g} %r2,%r5,2*$SIZE_T($sp)
|
|
x $s0,$tweak+0($sp) # ^=tweak
|
|
x $s1,$tweak+4($sp)
|
|
x $s2,$tweak+8($sp)
|
|
x $s3,$tweak+12($sp)
|
|
st $s0,0($out,$inp)
|
|
st $s1,4($out,$inp)
|
|
st $s2,8($out,$inp)
|
|
st $s3,12($out,$inp)
|
|
la $inp,16($inp)
|
|
brct${g} $len,.Lxts_dec_loop
|
|
|
|
llgc $len,`2*$SIZE_T-1`($sp)
|
|
nill $len,0x0f # $len%16
|
|
jz .Lxts_dec_done
|
|
|
|
# generate pair of tweaks...
|
|
lrvg $s1,$tweak+0($sp) # load the tweak in little-endian
|
|
lrvg $s3,$tweak+8($sp)
|
|
lghi %r1,0x87
|
|
srag %r0,$s3,63 # broadcast upper bit
|
|
ngr %r1,%r0 # rem
|
|
srlg %r0,$s1,63 # carry bit from lower half
|
|
sllg $s1,$s1,1
|
|
sllg $s3,$s3,1
|
|
xgr $s1,%r1
|
|
ogr $s3,%r0
|
|
lrvgr $i2,$s1 # flip byte order
|
|
lrvgr $i3,$s3
|
|
stmg $i2,$i3,$tweak($sp) # save the 1st tweak
|
|
j .Lxts_dec_2ndtweak
|
|
|
|
.align 16
|
|
.Lxts_dec_short:
|
|
llgc $len,`2*$SIZE_T-1`($sp)
|
|
nill $len,0x0f # $len%16
|
|
lrvg $s1,$tweak+0($sp) # load the tweak in little-endian
|
|
lrvg $s3,$tweak+8($sp)
|
|
.Lxts_dec_2ndtweak:
|
|
lghi %r1,0x87
|
|
srag %r0,$s3,63 # broadcast upper bit
|
|
ngr %r1,%r0 # rem
|
|
srlg %r0,$s1,63 # carry bit from lower half
|
|
sllg $s1,$s1,1
|
|
sllg $s3,$s3,1
|
|
xgr $s1,%r1
|
|
ogr $s3,%r0
|
|
lrvgr $s1,$s1 # flip byte order
|
|
lrvgr $s3,$s3
|
|
srlg $s0,$s1,32 # smash the tweak to 4x32-bits
|
|
stg $s1,$tweak-16+0($sp) # save the 2nd tweak
|
|
llgfr $s1,$s1
|
|
srlg $s2,$s3,32
|
|
stg $s3,$tweak-16+8($sp)
|
|
llgfr $s3,$s3
|
|
|
|
x $s0,0($inp) # tweak_the_2nd^=*(inp)
|
|
x $s1,4($inp)
|
|
x $s2,8($inp)
|
|
x $s3,12($inp)
|
|
stm${g} %r2,%r3,2*$SIZE_T($sp)
|
|
la $key,0($key1)
|
|
bras $ra,_s390x_AES_decrypt
|
|
lm${g} %r2,%r5,2*$SIZE_T($sp)
|
|
x $s0,$tweak-16+0($sp) # ^=tweak_the_2nd
|
|
x $s1,$tweak-16+4($sp)
|
|
x $s2,$tweak-16+8($sp)
|
|
x $s3,$tweak-16+12($sp)
|
|
st $s0,0($out,$inp)
|
|
st $s1,4($out,$inp)
|
|
st $s2,8($out,$inp)
|
|
st $s3,12($out,$inp)
|
|
|
|
la $i3,0($out,$inp) # put aside real $out
|
|
.Lxts_dec_steal:
|
|
llgc %r0,16($inp)
|
|
llgc %r1,0($out,$inp)
|
|
stc %r0,0($out,$inp)
|
|
stc %r1,16($out,$inp)
|
|
la $inp,1($inp)
|
|
brct $len,.Lxts_dec_steal
|
|
la $out,0($i3) # restore real $out
|
|
|
|
lm $s0,$s3,$tweak($sp) # load the 1st tweak
|
|
x $s0,0($out) # tweak^=*(inp)|stolen cipher-text
|
|
x $s1,4($out)
|
|
x $s2,8($out)
|
|
x $s3,12($out)
|
|
st${g} $out,4*$SIZE_T($sp)
|
|
la $key,0($key1)
|
|
bras $ra,_s390x_AES_decrypt
|
|
l${g} $out,4*$SIZE_T($sp)
|
|
x $s0,$tweak+0($sp) # ^=tweak
|
|
x $s1,$tweak+4($sp)
|
|
x $s2,$tweak+8($sp)
|
|
x $s3,$tweak+12($sp)
|
|
st $s0,0($out)
|
|
st $s1,4($out)
|
|
st $s2,8($out)
|
|
st $s3,12($out)
|
|
stg $sp,$tweak-16+0($sp) # wipe 2nd tweak
|
|
stg $sp,$tweak-16+8($sp)
|
|
.Lxts_dec_done:
|
|
stg $sp,$tweak+0($sp) # wipe tweak
|
|
stg $sp,$twesk+8($sp)
|
|
lm${g} %r6,$ra,6*$SIZE_T($sp)
|
|
br $ra
|
|
.size AES_xts_decrypt,.-AES_xts_decrypt
|
|
___
|
|
}
|
|
$code.=<<___;
|
|
.string "AES for s390x, CRYPTOGAMS by <appro\@openssl.org>"
|
|
.comm OPENSSL_s390xcap_P,16,8
|
|
___
|
|
|
|
$code =~ s/\`([^\`]*)\`/eval $1/gem;
|
|
print $code;
|
|
close STDOUT; # force flush
|