diff options
Diffstat (limited to 'src/base/md5.c')
| -rw-r--r-- | src/base/md5.c | 51 |
1 files changed, 26 insertions, 25 deletions
diff --git a/src/base/md5.c b/src/base/md5.c index 2f01c93..52d96ac 100644 --- a/src/base/md5.c +++ b/src/base/md5.c @@ -50,7 +50,8 @@ */ #define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z)))) #define G(x, y, z) ((y) ^ ((z) & ((x) ^ (y)))) -#define H(x, y, z) ((x) ^ (y) ^ (z)) +#define H(x, y, z) (((x) ^ (y)) ^ (z)) +#define H2(x, y, z) ((x) ^ ((y) ^ (z))) #define I(x, y, z) ((y) ^ ((x) | ~(z))) /* @@ -89,13 +90,13 @@ * This processes one or more 64-byte data blocks, but does NOT update * the bit counters. There are no alignment requirements. */ -static void *body(MD5_CTX *ctx, void *data, unsigned long size) +static const void *body(MD5_CTX *ctx, const void *data, unsigned long size) { - unsigned char *ptr; + const unsigned char *ptr; MD5_u32plus a, b, c, d; MD5_u32plus saved_a, saved_b, saved_c, saved_d; - ptr = (unsigned char *)data; + ptr = (const unsigned char *)data; a = ctx->a; b = ctx->b; @@ -146,21 +147,21 @@ static void *body(MD5_CTX *ctx, void *data, unsigned long size) /* Round 3 */ STEP(H, a, b, c, d, GET(5), 0xfffa3942, 4) - STEP(H, d, a, b, c, GET(8), 0x8771f681, 11) + STEP(H2, d, a, b, c, GET(8), 0x8771f681, 11) STEP(H, c, d, a, b, GET(11), 0x6d9d6122, 16) - STEP(H, b, c, d, a, GET(14), 0xfde5380c, 23) + STEP(H2, b, c, d, a, GET(14), 0xfde5380c, 23) STEP(H, a, b, c, d, GET(1), 0xa4beea44, 4) - STEP(H, d, a, b, c, GET(4), 0x4bdecfa9, 11) + STEP(H2, d, a, b, c, GET(4), 0x4bdecfa9, 11) STEP(H, c, d, a, b, GET(7), 0xf6bb4b60, 16) - STEP(H, b, c, d, a, GET(10), 0xbebfbc70, 23) + STEP(H2, b, c, d, a, GET(10), 0xbebfbc70, 23) STEP(H, a, b, c, d, GET(13), 0x289b7ec6, 4) - STEP(H, d, a, b, c, GET(0), 0xeaa127fa, 11) + STEP(H2, d, a, b, c, GET(0), 0xeaa127fa, 11) STEP(H, c, d, a, b, GET(3), 0xd4ef3085, 16) - STEP(H, b, c, d, a, GET(6), 0x04881d05, 23) + STEP(H2, b, c, d, a, GET(6), 0x04881d05, 23) STEP(H, a, b, c, d, GET(9), 0xd9d4d039, 4) - STEP(H, d, a, b, c, GET(12), 0xe6db99e5, 11) + STEP(H2, d, a, b, c, GET(12), 0xe6db99e5, 11) STEP(H, c, d, a, b, GET(15), 0x1fa27cf8, 16) - STEP(H, b, c, d, a, GET(2), 0xc4ac5665, 23) + STEP(H2, b, c, d, a, GET(2), 0xc4ac5665, 23) /* Round 4 */ STEP(I, a, b, c, d, GET(0), 0xf4292244, 6) @@ -207,10 +208,10 @@ void MD5_Init(MD5_CTX *ctx) ctx->hi = 0; } -void MD5_Update(MD5_CTX *ctx, void *data, unsigned long size) +void MD5_Update(MD5_CTX *ctx, const void *data, unsigned long size) { MD5_u32plus saved_lo; - unsigned long used, free; + unsigned long used, available; saved_lo = ctx->lo; if ((ctx->lo = (saved_lo + size) & 0x1fffffff) < saved_lo) @@ -220,16 +221,16 @@ void MD5_Update(MD5_CTX *ctx, void *data, unsigned long size) used = saved_lo & 0x3f; if (used) { - free = 64 - used; + available = 64 - used; - if (size < free) { + if (size < available) { memcpy(&ctx->buffer[used], data, size); return; } - memcpy(&ctx->buffer[used], data, free); - data = (unsigned char *)data + free; - size -= free; + memcpy(&ctx->buffer[used], data, available); + data = (const unsigned char *)data + available; + size -= available; body(ctx, ctx->buffer, 64); } @@ -243,22 +244,22 @@ void MD5_Update(MD5_CTX *ctx, void *data, unsigned long size) void MD5_Final(unsigned char *result, MD5_CTX *ctx) { - unsigned long used, free; + unsigned long used, available; used = ctx->lo & 0x3f; ctx->buffer[used++] = 0x80; - free = 64 - used; + available = 64 - used; - if (free < 8) { - memset(&ctx->buffer[used], 0, free); + if (available < 8) { + memset(&ctx->buffer[used], 0, available); body(ctx, ctx->buffer, 64); used = 0; - free = 64; + available = 64; } - memset(&ctx->buffer[used], 0, free - 8); + memset(&ctx->buffer[used], 0, available - 8); ctx->lo <<= 3; ctx->buffer[56] = ctx->lo; |