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[Qemu-ppc] [V2 PATCH 2/6] util: Add AES ShiftRows and InvShiftRows Table
From: |
Tom Musta |
Subject: |
[Qemu-ppc] [V2 PATCH 2/6] util: Add AES ShiftRows and InvShiftRows Tables |
Date: |
Thu, 13 Mar 2014 09:13:26 -0500 |
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 <address@hidden>
Reviewed-by: Richard Henderson <address@hidden>
---
include/qemu/aes.h | 4 ++++
util/aes.c | 8 ++++++++
2 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/include/qemu/aes.h b/include/qemu/aes.h
index a4044f5..c45bc57 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 eeb644b..c26cf55 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];
--
1.7.1
- [Qemu-ppc] [V2 PATCH 0/6] Refactor AES Instructions, Tom Musta, 2014/03/13
- [Qemu-ppc] [V2 PATCH 1/6] util: Add S-Box and InvS-Box Arrays to Common AES Utils, Tom Musta, 2014/03/13
- [Qemu-ppc] [V2 PATCH 2/6] util: Add AES ShiftRows and InvShiftRows Tables,
Tom Musta <=
- [Qemu-ppc] [V2 PATCH 3/6] util: Add InvMixColumns, Tom Musta, 2014/03/13
- [Qemu-ppc] [V2 PATCH 5/6] target-arm: Use Common Tables in AES Instructions, Tom Musta, 2014/03/13
- [Qemu-ppc] [V2 PATCH 6/6] target-ppc: Refactor AES Instructions, Tom Musta, 2014/03/13
- [Qemu-ppc] [V2 PATCH 4/6] target-i386: Use Common ShiftRows and InvShiftRows Tables, Tom Musta, 2014/03/13