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(M): Use rol rather than open-coding it.
Add a FIXME comment.
This commit is contained in:
Jim Meyering
2000-09-24 23:59:39 +00:00
parent 8d0687974f
commit ab367e6b13
1 changed files with 4 additions and 2 deletions
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6
lib/sha.c
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@@ -241,7 +241,8 @@ sha_process_bytes (const void *buffer, size_t len, struct sha_ctx *ctx)
#define F4(B,C,D) (B ^ C ^ D)
/* Process LEN bytes of BUFFER, accumulating context into CTX.
It is assumed that LEN % 64 == 0. */
It is assumed that LEN % 64 == 0.
Most of this code comes from GnuPG's cipher/sha1.c. */
void
sha_process_block (const void *buffer, size_t len, struct sha_ctx *ctx)
@@ -265,7 +266,7 @@ sha_process_block (const void *buffer, size_t len, struct sha_ctx *ctx)
#define M(I) ( tm = x[I&0x0f] ^ x[(I-14)&0x0f] \
^ x[(I-8)&0x0f] ^ x[(I-3)&0x0f] \
, (x[I&0x0f] = (tm << 1) | (tm >> 31)) )
, (x[I&0x0f] = rol(tm, 1)) )
#define R(A,B,C,D,E,F,K,M) do { E += rol( A, 5 ) \
+ F( B, C, D ) \
@@ -278,6 +279,7 @@ sha_process_block (const void *buffer, size_t len, struct sha_ctx *ctx)
{
md5_uint32 tm;
int t;
/* FIXME: see sha1.c for a better implementation. */
for (t = 0; t < 16; t++)
{
x[t] = NOTSWAP (*words);