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| author | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2019-01-27 12:55:22 +0200 |
|---|---|---|
| committer | Jussi Kivilinna <jussi.kivilinna@iki.fi> | 2019-01-27 12:55:22 +0200 |
| commit | afab94d222425ecb838eb56cb0723bdaf3e5de36 (patch) | |
| tree | 3ef0517d57861f44c93b826ecfcad7c7b1bf7048 /cipher/cipher-ocb.c | |
| parent | c15409c49993166ab1325d45360b3a8fe72a5556 (diff) | |
| download | libgcrypt-afab94d222425ecb838eb56cb0723bdaf3e5de36.tar.gz | |
Do not precalculate OCB offset L0+L1+L0
* cipher/cipher-internal.h (gcry_cipher_handle): Remove OCB L0L1L0.
* cipher/cipher-ocb.c (_gcry_cipher_ocb_setkey): Ditto.
* cipher/rijndael-aesni.c (aesni_ocb_enc, aesni_ocb_dec)
(_gcry_aes_aesni_ocb_auth): Replace L0L1L0 use with L1.
--
Patch fixes L0+L1+L0 thinko. This is same as L1 (L0 xor L1 xor L0).
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Diffstat (limited to 'cipher/cipher-ocb.c')
| -rw-r--r-- | cipher/cipher-ocb.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/cipher/cipher-ocb.c b/cipher/cipher-ocb.c index be6b8dff..308b0495 100644 --- a/cipher/cipher-ocb.c +++ b/cipher/cipher-ocb.c @@ -141,11 +141,9 @@ void _gcry_cipher_ocb_setkey (gcry_cipher_hd_t c) double_block_cpy (c->u_mode.ocb.L[0], c->u_mode.ocb.L_dollar); for (i = 1; i < OCB_L_TABLE_SIZE; i++) double_block_cpy (c->u_mode.ocb.L[i], c->u_mode.ocb.L[i-1]); - /* Precalculated offsets L0+L1, L0+L1+L0 */ + /* Precalculated offset L0+L1 */ cipher_block_xor (c->u_mode.ocb.L0L1, c->u_mode.ocb.L[0], c->u_mode.ocb.L[1], OCB_BLOCK_LEN); - cipher_block_xor (c->u_mode.ocb.L0L1L0, - c->u_mode.ocb.L[0], c->u_mode.ocb.L0L1, OCB_BLOCK_LEN); /* Cleanup */ wipememory (ktop, sizeof ktop); |