diff options
Diffstat (limited to 'libbb/sha1.c')
| -rw-r--r-- | libbb/sha1.c | 18 |
1 files changed, 7 insertions, 11 deletions
diff --git a/libbb/sha1.c b/libbb/sha1.c index 70efd581b..3e61aff6d 100644 --- a/libbb/sha1.c +++ b/libbb/sha1.c @@ -462,17 +462,15 @@ void FAST_FUNC sha512_hash(sha512_ctx_t *ctx, const void *buffer, size_t len) /* Used also for sha256 */ void FAST_FUNC sha1_end(sha1_ctx_t *ctx, void *resbuf) { - unsigned pad, bufpos; + unsigned bufpos = ctx->total64 & 63; - bufpos = ctx->total64 & 63; /* Pad the buffer to the next 64-byte boundary with 0x80,0,0,0... */ ctx->wbuffer[bufpos++] = 0x80; /* This loop iterates either once or twice, no more, no less */ while (1) { - pad = 64 - bufpos; + unsigned pad = 64 - bufpos; memset(ctx->wbuffer + bufpos, 0, pad); - bufpos = 0; /* Do we have enough space for the length count? */ if (pad >= 8) { /* Store the 64-bit counter of bits in the buffer in BE format */ @@ -484,6 +482,7 @@ void FAST_FUNC sha1_end(sha1_ctx_t *ctx, void *resbuf) ctx->process_block(ctx); if (pad >= 8) break; + bufpos = 0; } bufpos = (ctx->process_block == sha1_process_block64) ? 5 : 8; @@ -498,18 +497,14 @@ void FAST_FUNC sha1_end(sha1_ctx_t *ctx, void *resbuf) void FAST_FUNC sha512_end(sha512_ctx_t *ctx, void *resbuf) { - unsigned pad, bufpos; + unsigned bufpos = ctx->total64[0] & 127; - bufpos = ctx->total64[0] & 127; - /* Pad the buffer to the next 128-byte boundary with 0x80,0,0,0... - * (FIPS 180-2:5.1.2) - */ + /* Pad the buffer to the next 128-byte boundary with 0x80,0,0,0... */ ctx->wbuffer[bufpos++] = 0x80; while (1) { - pad = 128 - bufpos; + unsigned pad = 128 - bufpos; memset(ctx->wbuffer + bufpos, 0, pad); - bufpos = 0; if (pad >= 16) { /* Store the 128-bit counter of bits in the buffer in BE format */ uint64_t t; @@ -523,6 +518,7 @@ void FAST_FUNC sha512_end(sha512_ctx_t *ctx, void *resbuf) sha512_process_block128(ctx); if (pad >= 16) break; + bufpos = 0; } if (BB_LITTLE_ENDIAN) { |