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Diffstat (limited to 'libbb/sha1.c')
-rw-r--r--libbb/sha1.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/libbb/sha1.c b/libbb/sha1.c
index 6d2f884..70efd58 100644
--- a/libbb/sha1.c
+++ b/libbb/sha1.c
@@ -329,7 +329,9 @@ static const uint32_t init256[] = {
0x510e527f,
0x9b05688c,
0x1f83d9ab,
- 0x5be0cd19
+ 0x5be0cd19,
+ 0,
+ 0,
};
static const uint32_t init512_lo[] = {
0xf3bcc908,
@@ -339,7 +341,9 @@ static const uint32_t init512_lo[] = {
0xade682d1,
0x2b3e6c1f,
0xfb41bd6b,
- 0x137e2179
+ 0x137e2179,
+ 0,
+ 0,
};
/* Initialize structure containing state of computation.
@@ -347,7 +351,7 @@ static const uint32_t init512_lo[] = {
void FAST_FUNC sha256_begin(sha256_ctx_t *ctx)
{
memcpy(ctx->hash, init256, sizeof(init256));
- ctx->total64 = 0;
+ /*ctx->total64 = 0; - done by extending init256 with two 32-bit zeros */
ctx->process_block = sha256_process_block64;
}
@@ -356,9 +360,10 @@ void FAST_FUNC sha256_begin(sha256_ctx_t *ctx)
void FAST_FUNC sha512_begin(sha512_ctx_t *ctx)
{
int i;
- for (i = 0; i < 8; i++)
+ /* Two extra iterations zero out ctx->total64[] */
+ for (i = 0; i < 8+2; i++)
ctx->hash[i] = ((uint64_t)(init256[i]) << 32) + init512_lo[i];
- ctx->total64[0] = ctx->total64[1] = 0;
+ /*ctx->total64[0] = ctx->total64[1] = 0; - already done */
}