From b27545be48f7065aa6561e5d46e8316951f5eeee Mon Sep 17 00:00:00 2001 From: Matt Horsnell Date: Wed, 9 May 2018 12:40:24 +0100 Subject: arch-arm: AArch32 Crypto AES This patch implements the AArch32 AES instructions from the Crypto extension. Change-Id: I51e6deda748b0c26135bcfe9d0c7128f3af91f3d Signed-off-by: Giacomo Travaglini Reviewed-by: Matt Horsnell Reviewed-on: https://gem5-review.googlesource.com/c/13248 Reviewed-by: Andreas Sandberg Maintainer: Andreas Sandberg --- src/arch/arm/insts/crypto.cc | 228 ++++++++++++++++++++++++++++++++++++++ src/arch/arm/insts/crypto.hh | 39 +++++++ src/arch/arm/isa/formats/fp.isa | 12 ++ src/arch/arm/isa/insts/crypto.isa | 15 +++ 4 files changed, 294 insertions(+) (limited to 'src/arch') diff --git a/src/arch/arm/insts/crypto.cc b/src/arch/arm/insts/crypto.cc index e5a4612bc..76f803c19 100644 --- a/src/arch/arm/insts/crypto.cc +++ b/src/arch/arm/insts/crypto.cc @@ -46,6 +46,234 @@ namespace ArmISA { +const uint8_t +Crypto::aesSBOX[256] = { + 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, + 0xfe, 0xd7, 0xab, 0x76, 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, + 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, 0xb7, 0xfd, 0x93, 0x26, + 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, + 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, + 0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, + 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, 0x53, 0xd1, 0x00, 0xed, + 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, + 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, + 0x50, 0x3c, 0x9f, 0xa8, 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, + 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd, 0x0c, 0x13, 0xec, + 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, + 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, + 0xde, 0x5e, 0x0b, 0xdb, 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, + 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, 0xe7, 0xc8, 0x37, 0x6d, + 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, + 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, + 0x4b, 0xbd, 0x8b, 0x8a, 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, + 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, 0xe1, 0xf8, 0x98, 0x11, + 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, + 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, + 0xb0, 0x54, 0xbb, 0x16 +}; + +const uint8_t +Crypto::aesInvSBOX[256] = { + 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, + 0x81, 0xf3, 0xd7, 0xfb, 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, + 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, 0x54, 0x7b, 0x94, 0x32, + 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e, + 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, + 0x6d, 0x8b, 0xd1, 0x25, 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, + 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, 0x6c, 0x70, 0x48, 0x50, + 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84, + 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, + 0xb8, 0xb3, 0x45, 0x06, 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, + 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, 0x3a, 0x91, 0x11, 0x41, + 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73, + 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, + 0x1c, 0x75, 0xdf, 0x6e, 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, + 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, 0xfc, 0x56, 0x3e, 0x4b, + 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4, + 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, + 0x27, 0x80, 0xec, 0x5f, 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, + 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, 0xa0, 0xe0, 0x3b, 0x4d, + 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61, + 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, + 0x55, 0x21, 0x0c, 0x7d +}; + +const uint8_t +Crypto::aesFFLOG[256] = { + 0x00, 0x00, 0x19, 0x01, 0x32, 0x02, 0x1a, 0xc6, 0x4b, 0xc7, 0x1b, 0x68, + 0x33, 0xee, 0xdf, 0x03, 0x64, 0x04, 0xe0, 0x0e, 0x34, 0x8d, 0x81, 0xef, + 0x4c, 0x71, 0x08, 0xc8, 0xf8, 0x69, 0x1c, 0xc1, 0x7d, 0xc2, 0x1d, 0xb5, + 0xf9, 0xb9, 0x27, 0x6a, 0x4d, 0xe4, 0xa6, 0x72, 0x9a, 0xc9, 0x09, 0x78, + 0x65, 0x2f, 0x8a, 0x05, 0x21, 0x0f, 0xe1, 0x24, 0x12, 0xf0, 0x82, 0x45, + 0x35, 0x93, 0xda, 0x8e, 0x96, 0x8f, 0xdb, 0xbd, 0x36, 0xd0, 0xce, 0x94, + 0x13, 0x5c, 0xd2, 0xf1, 0x40, 0x46, 0x83, 0x38, 0x66, 0xdd, 0xfd, 0x30, + 0xbf, 0x06, 0x8b, 0x62, 0xb3, 0x25, 0xe2, 0x98, 0x22, 0x88, 0x91, 0x10, + 0x7e, 0x6e, 0x48, 0xc3, 0xa3, 0xb6, 0x1e, 0x42, 0x3a, 0x6b, 0x28, 0x54, + 0xfa, 0x85, 0x3d, 0xba, 0x2b, 0x79, 0x0a, 0x15, 0x9b, 0x9f, 0x5e, 0xca, + 0x4e, 0xd4, 0xac, 0xe5, 0xf3, 0x73, 0xa7, 0x57, 0xaf, 0x58, 0xa8, 0x50, + 0xf4, 0xea, 0xd6, 0x74, 0x4f, 0xae, 0xe9, 0xd5, 0xe7, 0xe6, 0xad, 0xe8, + 0x2c, 0xd7, 0x75, 0x7a, 0xeb, 0x16, 0x0b, 0xf5, 0x59, 0xcb, 0x5f, 0xb0, + 0x9c, 0xa9, 0x51, 0xa0, 0x7f, 0x0c, 0xf6, 0x6f, 0x17, 0xc4, 0x49, 0xec, + 0xd8, 0x43, 0x1f, 0x2d, 0xa4, 0x76, 0x7b, 0xb7, 0xcc, 0xbb, 0x3e, 0x5a, + 0xfb, 0x60, 0xb1, 0x86, 0x3b, 0x52, 0xa1, 0x6c, 0xaa, 0x55, 0x29, 0x9d, + 0x97, 0xb2, 0x87, 0x90, 0x61, 0xbe, 0xdc, 0xfc, 0xbc, 0x95, 0xcf, 0xcd, + 0x37, 0x3f, 0x5b, 0xd1, 0x53, 0x39, 0x84, 0x3c, 0x41, 0xa2, 0x6d, 0x47, + 0x14, 0x2a, 0x9e, 0x5d, 0x56, 0xf2, 0xd3, 0xab, 0x44, 0x11, 0x92, 0xd9, + 0x23, 0x20, 0x2e, 0x89, 0xb4, 0x7c, 0xb8, 0x26, 0x77, 0x99, 0xe3, 0xa5, + 0x67, 0x4a, 0xed, 0xde, 0xc5, 0x31, 0xfe, 0x18, 0x0d, 0x63, 0x8c, 0x80, + 0xc0, 0xf7, 0x70, 0x07 +}; + +const uint8_t +Crypto::aesFFEXP[256] = { + 0x01, 0x03, 0x05, 0x0f, 0x11, 0x33, 0x55, 0xff, 0x1a, 0x2e, 0x72, 0x96, + 0xa1, 0xf8, 0x13, 0x35, 0x5f, 0xe1, 0x38, 0x48, 0xd8, 0x73, 0x95, 0xa4, + 0xf7, 0x02, 0x06, 0x0a, 0x1e, 0x22, 0x66, 0xaa, 0xe5, 0x34, 0x5c, 0xe4, + 0x37, 0x59, 0xeb, 0x26, 0x6a, 0xbe, 0xd9, 0x70, 0x90, 0xab, 0xe6, 0x31, + 0x53, 0xf5, 0x04, 0x0c, 0x14, 0x3c, 0x44, 0xcc, 0x4f, 0xd1, 0x68, 0xb8, + 0xd3, 0x6e, 0xb2, 0xcd, 0x4c, 0xd4, 0x67, 0xa9, 0xe0, 0x3b, 0x4d, 0xd7, + 0x62, 0xa6, 0xf1, 0x08, 0x18, 0x28, 0x78, 0x88, 0x83, 0x9e, 0xb9, 0xd0, + 0x6b, 0xbd, 0xdc, 0x7f, 0x81, 0x98, 0xb3, 0xce, 0x49, 0xdb, 0x76, 0x9a, + 0xb5, 0xc4, 0x57, 0xf9, 0x10, 0x30, 0x50, 0xf0, 0x0b, 0x1d, 0x27, 0x69, + 0xbb, 0xd6, 0x61, 0xa3, 0xfe, 0x19, 0x2b, 0x7d, 0x87, 0x92, 0xad, 0xec, + 0x2f, 0x71, 0x93, 0xae, 0xe9, 0x20, 0x60, 0xa0, 0xfb, 0x16, 0x3a, 0x4e, + 0xd2, 0x6d, 0xb7, 0xc2, 0x5d, 0xe7, 0x32, 0x56, 0xfa, 0x15, 0x3f, 0x41, + 0xc3, 0x5e, 0xe2, 0x3d, 0x47, 0xc9, 0x40, 0xc0, 0x5b, 0xed, 0x2c, 0x74, + 0x9c, 0xbf, 0xda, 0x75, 0x9f, 0xba, 0xd5, 0x64, 0xac, 0xef, 0x2a, 0x7e, + 0x82, 0x9d, 0xbc, 0xdf, 0x7a, 0x8e, 0x89, 0x80, 0x9b, 0xb6, 0xc1, 0x58, + 0xe8, 0x23, 0x65, 0xaf, 0xea, 0x25, 0x6f, 0xb1, 0xc8, 0x43, 0xc5, 0x54, + 0xfc, 0x1f, 0x21, 0x63, 0xa5, 0xf4, 0x07, 0x09, 0x1b, 0x2d, 0x77, 0x99, + 0xb0, 0xcb, 0x46, 0xca, 0x45, 0xcf, 0x4a, 0xde, 0x79, 0x8b, 0x86, 0x91, + 0xa8, 0xe3, 0x3e, 0x42, 0xc6, 0x51, 0xf3, 0x0e, 0x12, 0x36, 0x5a, 0xee, + 0x29, 0x7b, 0x8d, 0x8c, 0x8f, 0x8a, 0x85, 0x94, 0xa7, 0xf2, 0x0d, 0x17, + 0x39, 0x4b, 0xdd, 0x7c, 0x84, 0x97, 0xa2, 0xfd, 0x1c, 0x24, 0x6c, 0xb4, + 0xc7, 0x52, 0xf6, 0x01 +}; + +const uint8_t +Crypto::aesSHIFT[16] = { + 0, 5, 10, 15, 4, 9, 14, 3, + 8, 13, 2, 7, 12, 1, 6, 11 +}; + +const uint8_t +Crypto::aesINVSHIFT[16] = { + 0, 13, 10, 7, 4, 1, 14, 11, + 8, 5, 2, 15, 12, 9, 6, 3 +}; + +uint8_t +Crypto::aesFFMul(uint8_t a, uint8_t b) +{ + unsigned int log_prod; + + if ((a ==0)|| (b == 0)) return 0; + + log_prod = (aesFFLOG[a] + aesFFLOG[b]); + + if(log_prod > 0xff) + log_prod = log_prod - 0xff; + + return aesFFEXP[log_prod]; +} + +void +Crypto::aesSubBytes(uint8_t *output, uint8_t *input) +{ + for (int i = 0; i < 16; ++i) { + output[i] = aesSBOX[input[i]]; + } +} + +void +Crypto::aesInvSubBytes(uint8_t *output, uint8_t *input) +{ + for (int i = 0; i < 16; ++i) { + output[i] = aesInvSBOX[input[i]]; + } +} + +void +Crypto::aesShiftRows(uint8_t *output, uint8_t *input) +{ + for (int i = 0; i < 16; ++i) { + output[i] = input[aesSHIFT[i]]; + } +} + +void +Crypto::aesInvShiftRows(uint8_t *output, uint8_t *input) +{ + for (int i = 0; i < 16; ++i) { + output[i] = input[aesINVSHIFT[i]]; + } +} + +void +Crypto::aesAddRoundKey(uint8_t *output, uint8_t *input, + uint8_t *key) +{ + for (int i = 0; i < 16; ++i) { + output[i] = input[i] ^ key[i]; + } +} + +void +Crypto::aesMixColumns(uint8_t *output, uint8_t *input) +{ + for (int j = 0; j < 4; ++j) { + int row0 = (j * 4); + int row1 = row0 + 1; + int row2 = row0 + 2; + int row3 = row0 + 3; + uint8_t t1 = input[row0] ^ input[row1] ^ + input[row2] ^ input[row3]; + + output[row1] = input[row1] ^ t1 ^ aesFFMul2(input[row1] ^ input[row2]); + output[row2] = input[row2] ^ t1 ^ aesFFMul2(input[row2] ^ input[row3]); + output[row3] = input[row3] ^ t1 ^ aesFFMul2(input[row3] ^ input[row0]); + output[row0] = input[row0] ^ t1 ^ aesFFMul2(input[row0] ^ input[row1]); + } +} + +void +Crypto::aesInvMixColumns(uint8_t *output, uint8_t *input) +{ + for (int j = 0; j < 4; ++j) { + for (int i = 0; i < 4; ++i) { + int index0 = (j * 4) + i; + int index1 = (j * 4) + ((i + 1) % 4); + int index2 = (j * 4) + ((i + 2) % 4); + int index3 = (j * 4) + ((i + 3) % 4); + output [index0] = + aesFFMul(0x0e, input[index0]) ^ aesFFMul(0x0b, input[index1]) ^ + aesFFMul(0x0d, input[index2]) ^ aesFFMul(0x09, input[index3]); + } + } +} + +void +Crypto::aesEncrypt(uint8_t *output, uint8_t *input, + uint8_t *key) +{ + uint8_t temp1[16]; + uint8_t temp2[16]; + aesAddRoundKey(&temp1[0], input, key); + aesShiftRows(&temp2[0], &temp1[0]); + aesSubBytes(output, &temp2[0]); +} + +void +Crypto::aesDecrypt(uint8_t *output, uint8_t *input, + uint8_t *key) +{ + uint8_t temp1[16]; + uint8_t temp2[16]; + aesAddRoundKey(&temp1[0], input, key); + aesInvShiftRows(&temp2[0], &temp1[0]); + aesInvSubBytes(output, &temp2[0]); +} + void Crypto::sha256Op( uint32_t *X, diff --git a/src/arch/arm/insts/crypto.hh b/src/arch/arm/insts/crypto.hh index c89ace04a..021c519cd 100644 --- a/src/arch/arm/insts/crypto.hh +++ b/src/arch/arm/insts/crypto.hh @@ -52,6 +52,41 @@ class Crypto MAJORITY }; + /** Look up table for subByttes transformation */ + static const uint8_t aesSBOX[256]; + + /** Look up table for inverse subBytes transformation */ + static const uint8_t aesInvSBOX[256]; + + static const uint8_t aesSHIFT[16]; + static const uint8_t aesINVSHIFT[16]; + + /** + * Look up table for Finite Field logarithm where the base + * is the element {03} in the field G(256) + */ + static const uint8_t aesFFLOG[256]; + + /** + * Look up table for {03}^X where {03} and X are elements + * in the filed G(256) + */ + static const uint8_t aesFFEXP[256]; + + /** Finite field multiplication of two elements in the field G(256) */ + uint8_t aesFFMul(uint8_t a, uint8_t b); + + uint8_t aesFFMul2(uint8_t a) + { + return ((a & 0x80) ? ((a << 1) ^ 0x1b) : (a << 1)); + } + + void aesSubBytes(uint8_t *output, uint8_t *input); + void aesInvSubBytes(uint8_t *output, uint8_t *input); + void aesShiftRows(uint8_t *output, uint8_t *input); + void aesInvShiftRows(uint8_t *output, uint8_t *input); + void aesAddRoundKey(uint8_t *output, uint8_t *input, uint8_t *key); + uint32_t ror(uint32_t x, uint8_t shift) { return (x >> shift) | (x << (32 - shift)); @@ -92,6 +127,10 @@ class Crypto void store1Reg(uint8_t *output, uint32_t *X); public: + void aesMixColumns(uint8_t *output, uint8_t *input); + void aesInvMixColumns(uint8_t *output, uint8_t *input); + void aesEncrypt(uint8_t *output, uint8_t *input, uint8_t *key); + void aesDecrypt(uint8_t *output, uint8_t *input, uint8_t *key); void sha256H(uint8_t *output, uint8_t *input, uint8_t *input2); void sha256H2(uint8_t *output, uint8_t *input, uint8_t *input2); void sha256Su0(uint8_t *output, uint8_t *input); diff --git a/src/arch/arm/isa/formats/fp.isa b/src/arch/arm/isa/formats/fp.isa index 26abc659f..77a33e6fe 100644 --- a/src/arch/arm/isa/formats/fp.isa +++ b/src/arch/arm/isa/formats/fp.isa @@ -1476,6 +1476,18 @@ let {{ case 0x5: return decodeNeonUTwoMiscSReg( q, size, machInst, vd, vm); + case 0x6: + if (q == 0) { + return new AESE(machInst, vd, vd, vm); + } else { + return new AESD(machInst, vd, vd, vm); + } + case 0x7: + if (q == 0) { + return new AESMC(machInst, vd, vm); + } else { + return new AESIMC(machInst, vd, vm); + } case 0x8: return decodeNeonSTwoMiscReg( q, size, machInst, vd, vm); diff --git a/src/arch/arm/isa/insts/crypto.isa b/src/arch/arm/isa/insts/crypto.isa index cdc0293a4..20ba4c486 100644 --- a/src/arch/arm/isa/insts/crypto.isa +++ b/src/arch/arm/isa/insts/crypto.isa @@ -136,6 +136,11 @@ let {{ decoder_output += RegRegImmOpConstructor.subst(cryptoiop) exec_output += CryptoPredOpExecute.subst(cryptoiop) + aeseCode = "crypto.aesEncrypt(output, input, input2);" + aesdCode = "crypto.aesDecrypt(output, input, input2);" + aesmcCode = "crypto.aesMixColumns(output, input);" + aesimcCode = "crypto.aesInvMixColumns(output, input);" + sha1_cCode = "crypto.sha1C(output, input, input2);" sha1_pCode = "crypto.sha1P(output, input, input2);" sha1_mCode = "crypto.sha1M(output, input, input2);" @@ -148,6 +153,16 @@ let {{ sha256_su0Code = "crypto.sha256Su0(output, input);" sha256_su1Code = "crypto.sha256Su1(output, input, input2);" + aes_enabled = cryptoEnabledCheckCode % { "mask" : 0xF0 } + cryptoRegRegRegInst("aese", "AESE", "SimdAesOp", + aes_enabled, aeseCode) + cryptoRegRegRegInst("aesd", "AESD", "SimdAesOp", + aes_enabled, aesdCode) + cryptoRegRegInst("aesmc", "AESMC", "SimdAesMixOp", + aes_enabled, aesmcCode) + cryptoRegRegInst("aesimc", "AESIMC", "SimdAesMixOp", + aes_enabled, aesimcCode) + sha1_enabled = cryptoEnabledCheckCode % { "mask" : 0xF00 } cryptoRegRegRegInst("sha1c", "SHA1C", "SimdSha1HashOp", sha1_enabled, sha1_cCode) -- cgit v1.2.3