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| author | Mattias Andrée <maandree@kth.se> | 2024-08-24 01:05:44 +0200 |
|---|---|---|
| committer | Mattias Andrée <maandree@kth.se> | 2024-08-24 01:05:44 +0200 |
| commit | cf0f05362e71c189b8052bbfddd2f270f907041e (patch) | |
| tree | 371ba96e6d0cdda94a5ba0f07628b1d1ea0c5960 /libhashsum_init_md5_hasher.c | |
| parent | Fix makefile (diff) | |
| download | libhashsum-cf0f05362e71c189b8052bbfddd2f270f907041e.tar.gz libhashsum-cf0f05362e71c189b8052bbfddd2f270f907041e.tar.bz2 libhashsum-cf0f05362e71c189b8052bbfddd2f270f907041e.tar.xz | |
Standardise how to interpret a partial byte
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to 'libhashsum_init_md5_hasher.c')
| -rw-r--r-- | libhashsum_init_md5_hasher.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libhashsum_init_md5_hasher.c b/libhashsum_init_md5_hasher.c index 292bd1e..7bf19af 100644 --- a/libhashsum_init_md5_hasher.c +++ b/libhashsum_init_md5_hasher.c @@ -109,9 +109,11 @@ finalise_common(struct libhashsum_hasher *this, uint8_t *m, size_t bytes, unsign this->state.md5.count *= 8U; this->state.md5.count += (size_t)extra_bits; + if (extra_bits) + m[bytes] = libhashsum_reverse_byte__(m[bytes]); mask = (uint8_t)(1U << (7U - extra_bits)); m[bytes] |= mask; - m[bytes] &= (uint8_t)~(mask - 1U); /* keep high bits */ + m[bytes] &= (uint8_t)~(mask - 1U); /* keep high bits (original value was reversed) */ bytes++; if (bytes > 56U) { @@ -159,6 +161,7 @@ finalise_const(struct libhashsum_hasher *this, const void *data, size_t bytes, u m = &m[r]; bytes -= r; + this->state.md5.m[bytes] = 0; memcpy(this->state.md5.m, m, bytes + (size_t)(extra_bits > 0U)); return finalise_common(this, this->state.md5.m, bytes, extra_bits); } |