305958dbd
Denys Vlasenko
2015-10-07
Subject
md5sum: code shrink
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libbb/hash_md5_sha.c+6 -10
| @@ -137,7 +137,7 @@ static void FAST_FUNC md5_process_block64(md5_ctx_t *ctx) | |
| #if MD5_SMALL > 0 | |
| /* Before we start, one word to the strange constants. | |
| They are defined in RFC 1321 as | |
| - | T[i] = (int)(4294967296.0 * fabs(sin(i))), i=1..64 |
| + | T[i] = (int)(2^32 * fabs(sin(i))), i=1..64 |
| */ | |
| static const uint32_t C_array[] = { | |
| /* round 1 */ | |
| @@ -213,7 +213,7 @@ static void FAST_FUNC md5_process_block64(md5_ctx_t *ctx) | |
| case 2: | |
| temp += FH(B, C, D); | |
| break; | |
| - | case 3: |
| + | default: /* case 3 */ |
| temp += FI(B, C, D); | |
| } | |
| temp += words[(int) (*pp++)] + *pc++; | |
| @@ -277,10 +277,6 @@ static void FAST_FUNC md5_process_block64(md5_ctx_t *ctx) | |
| #else /* MD5_SMALL == 0 or 1 */ | |
| - | uint32_t A_save = A; |
| - | uint32_t B_save = B; |
| - | uint32_t C_save = C; |
| - | uint32_t D_save = D; |
| # if MD5_SMALL == 1 | |
| const uint32_t *pc; | |
| const char *pp; | |
| @@ -425,10 +421,10 @@ static void FAST_FUNC md5_process_block64(md5_ctx_t *ctx) | |
| # undef OP | |
| # endif | |
| /* Add checksum to the starting values */ | |
| - | ctx->hash[0] = A_save + A; |
| - | ctx->hash[1] = B_save + B; |
| - | ctx->hash[2] = C_save + C; |
| - | ctx->hash[3] = D_save + D; |
| + | ctx->hash[0] += A; |
| + | ctx->hash[1] += B; |
| + | ctx->hash[2] += C; |
| + | ctx->hash[3] += D; |
| #endif | |
| } | |
| #undef FF | |