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BN_to_montgomery expects its inputs to be in the interval 0 .. modulus-1,

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so we have to reduce the random numbers used in test_mont.

Before this change, test_mont failed in [debug-]solaris-sparcv9-gcc
configurations ("Montgomery multiplication test failed!" because
the multiplication result obtained with Montgomery multiplication
differed from the result obtained by BN_mod_mul).
Substituing the old version of bn_gcd.c (BN_mod_inverse) did not avoid
the problem.

The strange thing is that it I did not observe any problems
when using debug-solaris-sparcv8-gcc and solaris-sparcv9-cc,
as well as when compiling OpenSSL 0.9.6 in the solaric-sparcv9-gcc
configuration on the same system.
This commit is contained in:
Bodo Möller 2000-11-29 18:08:24 +00:00
parent c6a926d9e2
commit 14697d9d6d
1 changed files with 3 additions and 0 deletions
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3
crypto/bn/bntest.c
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@ -629,6 +629,9 @@ int test_mont(BIO *bp, BN_CTX *ctx)
BN_rand(&n,bits,0,1);
BN_MONT_CTX_set(mont,&n,ctx);
BN_nnmod(&a,&a,&n,ctx);
BN_nnmod(&b,&b,&n,ctx);
BN_to_montgomery(&A,&a,mont,ctx);
BN_to_montgomery(&B,&b,mont,ctx);