diff options
| author | Tom Musta <tommusta@gmail.com> | 2014-03-13 09:13:26 -0500 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2014-06-16 13:24:33 +0200 |
| commit | 1c1a6d20e0bceef5b5ce68930bf255021c326cce (patch) | |
| tree | bfbf66969ee8e82684c072376ab8765603869c73 | |
| parent | 40c84b54dd47f3ad2a170c036a97aa1b777c645d (diff) | |
util: Add AES ShiftRows and InvShiftRows Tables
This patch adds tables that implement the Advanced Encryption Standard (AES) ShiftRows
and InvShiftRows transformations. These are commonly used in instruction models.
Signed-off-by: Tom Musta <tommusta@gmail.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
| -rw-r--r-- | include/qemu/aes.h | 4 | ||||
| -rw-r--r-- | util/aes.c | 8 |
2 files changed, 12 insertions, 0 deletions
diff --git a/include/qemu/aes.h b/include/qemu/aes.h index a4044f52c7..c45bc57467 100644 --- a/include/qemu/aes.h +++ b/include/qemu/aes.h @@ -26,6 +26,10 @@ void AES_cbc_encrypt(const unsigned char *in, unsigned char *out, extern const uint8_t AES_sbox[256]; extern const uint8_t AES_isbox[256]; +/* AES ShiftRows and InvShiftRows */ +extern const uint8_t AES_shifts[16]; +extern const uint8_t AES_ishifts[16]; + /* AES_Te0[x] = S [x].[02, 01, 01, 03]; AES_Te1[x] = S [x].[03, 02, 01, 01]; diff --git a/util/aes.c b/util/aes.c index eeb644b6ca..c26cf55f59 100644 --- a/util/aes.c +++ b/util/aes.c @@ -108,6 +108,14 @@ const uint8_t AES_isbox[256] = { 0xE1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0C, 0x7D, }; +const uint8_t AES_shifts[16] = { + 0, 5, 10, 15, 4, 9, 14, 3, 8, 13, 2, 7, 12, 1, 6, 11 +}; + +const uint8_t AES_ishifts[16] = { + 0, 13, 10, 7, 4, 1, 14, 11, 8, 5, 2, 15, 12, 9, 6, 3 +}; + /* AES_Te0[x] = S [x].[02, 01, 01, 03]; AES_Te1[x] = S [x].[03, 02, 01, 01]; |