diff options
Diffstat (limited to 'src/crypto/poly1305/poly1305.c')
| -rw-r--r-- | src/crypto/poly1305/poly1305.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/src/crypto/poly1305/poly1305.c b/src/crypto/poly1305/poly1305.c index bf5cd5e..5a49e2d 100644 --- a/src/crypto/poly1305/poly1305.c +++ b/src/crypto/poly1305/poly1305.c @@ -132,19 +132,23 @@ poly1305_donna_mul: b = (uint32_t)(t[4] >> 26); state->h0 += b * 5; - if (len >= 16) + if (len >= 16) { goto poly1305_donna_16bytes; + } /* final bytes */ poly1305_donna_atmost15bytes: - if (!len) + if (!len) { return; + } - for (j = 0; j < len; j++) + for (j = 0; j < len; j++) { mp[j] = in[j]; + } mp[j++] = 1; - for (; j < 16; j++) + for (; j < 16; j++) { mp[j] = 0; + } len = 0; t0 = U8TO32_LE(mp + 0); @@ -221,10 +225,12 @@ void CRYPTO_poly1305_update(poly1305_state *statep, const uint8_t *in, if (state->buf_used) { unsigned int todo = 16 - state->buf_used; - if (todo > in_len) + if (todo > in_len) { todo = in_len; - for (i = 0; i < todo; i++) + } + for (i = 0; i < todo; i++) { state->buf[state->buf_used + i] = in[i]; + } state->buf_used += todo; in_len -= todo; in += todo; @@ -243,8 +249,9 @@ void CRYPTO_poly1305_update(poly1305_state *statep, const uint8_t *in, } if (in_len) { - for (i = 0; i < in_len; i++) + for (i = 0; i < in_len; i++) { state->buf[i] = in[i]; + } state->buf_used = in_len; } } @@ -262,8 +269,9 @@ void CRYPTO_poly1305_finish(poly1305_state *statep, uint8_t mac[16]) { } #endif - if (state->buf_used) + if (state->buf_used) { poly1305_update(state, state->buf, state->buf_used); + } b = state->h0 >> 26; state->h0 = state->h0 & 0x3ffffff; |