diff options
Diffstat (limited to 'poly1305-donna32.c')
| -rw-r--r-- | poly1305-donna32.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/poly1305-donna32.c b/poly1305-donna32.c index eec66dd..dae05aa 100644 --- a/poly1305-donna32.c +++ b/poly1305-donna32.c @@ -27,6 +27,7 @@ struct poly1305_ctx { struct poly1305_internal { u32 h[5]; u32 r[5]; + u32 s[4]; }; static void poly1305_init_generic(void *ctx, const u8 key[16]) @@ -40,6 +41,11 @@ static void poly1305_init_generic(void *ctx, const u8 key[16]) st->r[3] = (get_unaligned_le32(&key[9]) >> 6) & 0x3f03fff; st->r[4] = (get_unaligned_le32(&key[12]) >> 8) & 0x00fffff; + st->s[0] = st->r[1] * 5; + st->s[1] = st->r[2] * 5; + st->s[2] = st->r[3] * 5; + st->s[3] = st->r[4] * 5; + /* h = 0 */ st->h[0] = 0; st->h[1] = 0; @@ -65,10 +71,10 @@ static void poly1305_blocks_generic(void *ctx, const u8 *input, size_t len, r3 = st->r[3]; r4 = st->r[4]; - s1 = r1 * 5; - s2 = r2 * 5; - s3 = r3 * 5; - s4 = r4 * 5; + s1 = st->s[0]; + s2 = st->s[1]; + s3 = st->s[2]; + s4 = st->s[3]; h0 = st->h[0]; h1 = st->h[1]; |