diff options
Diffstat (limited to 'crypto/modes')
| -rw-r--r-- | crypto/modes/ocb128.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/crypto/modes/ocb128.c b/crypto/modes/ocb128.c index d49aa6ede9..620675541d 100644 --- a/crypto/modes/ocb128.c +++ b/crypto/modes/ocb128.c @@ -78,7 +78,8 @@ static u32 ocb_ntz(u64 n) /* * Shift a block of 16 bytes left by shift bits */ -static void ocb_block_lshift(OCB_BLOCK *in, size_t shift, OCB_BLOCK *out) +static void ocb_block_lshift(const unsigned char *in, size_t shift, + unsigned char *out) { unsigned char shift_mask; int i; @@ -88,13 +89,13 @@ static void ocb_block_lshift(OCB_BLOCK *in, size_t shift, OCB_BLOCK *out) shift_mask <<= (8 - shift); for (i = 15; i >= 0; i--) { if (i > 0) { - mask[i - 1] = in->c[i] & shift_mask; + mask[i - 1] = in[i] & shift_mask; mask[i - 1] >>= 8 - shift; } - out->c[i] = in->c[i] << shift; + out[i] = in[i] << shift; if (i != 15) { - out->c[i] ^= mask[i]; + out[i] ^= mask[i]; } } } @@ -114,7 +115,7 @@ static void ocb_double(OCB_BLOCK *in, OCB_BLOCK *out) mask >>= 7; mask *= 135; - ocb_block_lshift(in, 1, out); + ocb_block_lshift(in->c, 1, out->c); out->c[15] ^= mask; } @@ -307,8 +308,7 @@ int CRYPTO_ocb128_setiv(OCB128_CONTEXT *ctx, const unsigned char *iv, /* Offset_0 = Stretch[1+bottom..128+bottom] */ shift = bottom % 8; - ocb_block_lshift((OCB_BLOCK *)(stretch + (bottom / 8)), shift, - &ctx->offset); + ocb_block_lshift(stretch + (bottom / 8), shift, ctx->offset.c); mask = 0xff; mask <<= 8 - shift; ctx->offset.c[15] |= |