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Use & instead of % - worth about 4% for 8 byte blocks.

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This commit is contained in:
Ben Laurie 2001-07-08 17:27:32 +00:00
parent f82197ad75
commit f31b12503e
2 changed files with 28 additions and 2 deletions
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18
CHANGES
View file

@ -11,6 +11,24 @@
*) applies to 0.9.6a (/0.9.6b) and 0.9.7
+) applies to 0.9.7 only
+) Speed up EVP routines.
Before:
encrypt
type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
decrypt
des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
After:
encrypt
des-cbc 4581.64k 5666.39k 5811.23k 5871.60k 5833.23k
decrypt
des-cbc 3615.18k 5102.53k 5501.58k 5631.13k 5635.52k
[Ben Laurie]
*) Fix crypto/bn/asm/mips3.s.
[Andy Polyakov]

12
crypto/evp/evp_enc.c
View file

@ -62,6 +62,8 @@
#include <openssl/err.h>
#include "evp_locl.h"
#include <assert.h>
const char *EVP_version="EVP" OPENSSL_VERSION_PTEXT;
void EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *ctx)
@ -88,6 +90,12 @@ int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
EVPerr(EVP_F_EVP_CIPHERINIT, EVP_R_NO_CIPHER_SET);
return 0;
}
/* we assume block size is a power of 2 in *cryptUpdate */
assert(ctx->cipher->block_size == 1
|| ctx->cipher->block_size == 8
|| ctx->cipher->block_size == 16);
if(!(EVP_CIPHER_CTX_flags(ctx) & EVP_CIPH_CUSTOM_IV)) {
switch(EVP_CIPHER_CTX_mode(ctx)) {
@ -147,7 +155,6 @@ int EVP_DecryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
return EVP_CipherInit(ctx, cipher, key, iv, 0);
}
int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
unsigned char *in, int inl)
{
@ -176,7 +183,8 @@ int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
*outl+=bl;
}
}
i=inl%bl; /* how much is left */
// i=inl%bl; /* how much is left */
i=inl&(bl-1);
inl-=i;
if (inl > 0)
{