diff options
Diffstat (limited to 'target-arm/crypto_helper.c')
| -rw-r--r-- | target-arm/crypto_helper.c | 281 |
1 files changed, 281 insertions, 0 deletions
diff --git a/target-arm/crypto_helper.c b/target-arm/crypto_helper.c new file mode 100644 index 0000000..f94be69 --- /dev/null +++ b/target-arm/crypto_helper.c @@ -0,0 +1,281 @@ +/* + * crypto_helper.c - emulate v8 Crypto Extensions instructions + * + * Copyright (C) 2013 Linaro Ltd <ard.biesheuvel@linaro.org> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + */ + +#include <stdlib.h> + +#include "cpu.h" +#include "exec/exec-all.h" +#include "helper.h" + +union AES_STATE { + uint8_t bytes[16]; + uint32_t cols[4]; + uint64_t l[2]; +}; + +void HELPER(crypto_aese)(CPUARMState *env, uint32_t rd, uint32_t rm, + uint32_t decrypt) +{ + static uint8_t const sbox[][256] = { { + /* S-box for encryption */ + 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 + }, { + /* S-box for decryption */ + 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 + } }; + static uint8_t const shift[][16] = { + /* ShiftRows permutation vector for encryption */ + { 0, 5, 10, 15, 4, 9, 14, 3, 8, 13, 2, 7, 12, 1, 6, 11 }, + /* ShiftRows permutation vector for decryption */ + { 0, 13, 10, 7, 4, 1, 14, 11, 8, 5, 2, 15, 12, 9, 6, 3 }, + }; + union AES_STATE rk = { .l = { + float64_val(env->vfp.regs[rm]), + float64_val(env->vfp.regs[rm + 1]) + } }; + union AES_STATE st = { .l = { + float64_val(env->vfp.regs[rd]), + float64_val(env->vfp.regs[rd + 1]) + } }; + int i; + + assert(decrypt < 2); + + /* xor state vector with round key */ + rk.l[0] ^= st.l[0]; + rk.l[1] ^= st.l[1]; + + /* combine ShiftRows operation and sbox substitution */ + for (i = 0; i < 16; i++) { + st.bytes[i] = sbox[decrypt][rk.bytes[shift[decrypt][i]]]; + } + + env->vfp.regs[rd] = make_float64(st.l[0]); + env->vfp.regs[rd + 1] = make_float64(st.l[1]); +} + +void HELPER(crypto_aesmc)(CPUARMState *env, uint32_t rd, uint32_t rm, + uint32_t decrypt) +{ + static uint32_t const mc[][256] = { { + /* MixColumns lookup table */ + 0x00000000, 0x03010102, 0x06020204, 0x05030306, + 0x0c040408, 0x0f05050a, 0x0a06060c, 0x0907070e, + 0x18080810, 0x1b090912, 0x1e0a0a14, 0x1d0b0b16, + 0x140c0c18, 0x170d0d1a, 0x120e0e1c, 0x110f0f1e, + 0x30101020, 0x33111122, 0x36121224, 0x35131326, + 0x3c141428, 0x3f15152a, 0x3a16162c, 0x3917172e, + 0x28181830, 0x2b191932, 0x2e1a1a34, 0x2d1b1b36, + 0x241c1c38, 0x271d1d3a, 0x221e1e3c, 0x211f1f3e, + 0x60202040, 0x63212142, 0x66222244, 0x65232346, + 0x6c242448, 0x6f25254a, 0x6a26264c, 0x6927274e, + 0x78282850, 0x7b292952, 0x7e2a2a54, 0x7d2b2b56, + 0x742c2c58, 0x772d2d5a, 0x722e2e5c, 0x712f2f5e, + 0x50303060, 0x53313162, 0x56323264, 0x55333366, + 0x5c343468, 0x5f35356a, 0x5a36366c, 0x5937376e, + 0x48383870, 0x4b393972, 0x4e3a3a74, 0x4d3b3b76, + 0x443c3c78, 0x473d3d7a, 0x423e3e7c, 0x413f3f7e, + 0xc0404080, 0xc3414182, 0xc6424284, 0xc5434386, + 0xcc444488, 0xcf45458a, 0xca46468c, 0xc947478e, + 0xd8484890, 0xdb494992, 0xde4a4a94, 0xdd4b4b96, + 0xd44c4c98, 0xd74d4d9a, 0xd24e4e9c, 0xd14f4f9e, + 0xf05050a0, 0xf35151a2, 0xf65252a4, 0xf55353a6, + 0xfc5454a8, 0xff5555aa, 0xfa5656ac, 0xf95757ae, + 0xe85858b0, 0xeb5959b2, 0xee5a5ab4, 0xed5b5bb6, + 0xe45c5cb8, 0xe75d5dba, 0xe25e5ebc, 0xe15f5fbe, + 0xa06060c0, 0xa36161c2, 0xa66262c4, 0xa56363c6, + 0xac6464c8, 0xaf6565ca, 0xaa6666cc, 0xa96767ce, + 0xb86868d0, 0xbb6969d2, 0xbe6a6ad4, 0xbd6b6bd6, + 0xb46c6cd8, 0xb76d6dda, 0xb26e6edc, 0xb16f6fde, + 0x907070e0, 0x937171e2, 0x967272e4, 0x957373e6, + 0x9c7474e8, 0x9f7575ea, 0x9a7676ec, 0x997777ee, + 0x887878f0, 0x8b7979f2, 0x8e7a7af4, 0x8d7b7bf6, + 0x847c7cf8, 0x877d7dfa, 0x827e7efc, 0x817f7ffe, + 0x9b80801b, 0x98818119, 0x9d82821f, 0x9e83831d, + 0x97848413, 0x94858511, 0x91868617, 0x92878715, + 0x8388880b, 0x80898909, 0x858a8a0f, 0x868b8b0d, + 0x8f8c8c03, 0x8c8d8d01, 0x898e8e07, 0x8a8f8f05, + 0xab90903b, 0xa8919139, 0xad92923f, 0xae93933d, + 0xa7949433, 0xa4959531, 0xa1969637, 0xa2979735, + 0xb398982b, 0xb0999929, 0xb59a9a2f, 0xb69b9b2d, + 0xbf9c9c23, 0xbc9d9d21, 0xb99e9e27, 0xba9f9f25, + 0xfba0a05b, 0xf8a1a159, 0xfda2a25f, 0xfea3a35d, + 0xf7a4a453, 0xf4a5a551, 0xf1a6a657, 0xf2a7a755, + 0xe3a8a84b, 0xe0a9a949, 0xe5aaaa4f, 0xe6abab4d, + 0xefacac43, 0xecadad41, 0xe9aeae47, 0xeaafaf45, + 0xcbb0b07b, 0xc8b1b179, 0xcdb2b27f, 0xceb3b37d, + 0xc7b4b473, 0xc4b5b571, 0xc1b6b677, 0xc2b7b775, + 0xd3b8b86b, 0xd0b9b969, 0xd5baba6f, 0xd6bbbb6d, + 0xdfbcbc63, 0xdcbdbd61, 0xd9bebe67, 0xdabfbf65, + 0x5bc0c09b, 0x58c1c199, 0x5dc2c29f, 0x5ec3c39d, + 0x57c4c493, 0x54c5c591, 0x51c6c697, 0x52c7c795, + 0x43c8c88b, 0x40c9c989, 0x45caca8f, 0x46cbcb8d, + 0x4fcccc83, 0x4ccdcd81, 0x49cece87, 0x4acfcf85, + 0x6bd0d0bb, 0x68d1d1b9, 0x6dd2d2bf, 0x6ed3d3bd, + 0x67d4d4b3, 0x64d5d5b1, 0x61d6d6b7, 0x62d7d7b5, + 0x73d8d8ab, 0x70d9d9a9, 0x75dadaaf, 0x76dbdbad, + 0x7fdcdca3, 0x7cdddda1, 0x79dedea7, 0x7adfdfa5, + 0x3be0e0db, 0x38e1e1d9, 0x3de2e2df, 0x3ee3e3dd, + 0x37e4e4d3, 0x34e5e5d1, 0x31e6e6d7, 0x32e7e7d5, + 0x23e8e8cb, 0x20e9e9c9, 0x25eaeacf, 0x26ebebcd, + 0x2fececc3, 0x2cededc1, 0x29eeeec7, 0x2aefefc5, + 0x0bf0f0fb, 0x08f1f1f9, 0x0df2f2ff, 0x0ef3f3fd, + 0x07f4f4f3, 0x04f5f5f1, 0x01f6f6f7, 0x02f7f7f5, + 0x13f8f8eb, 0x10f9f9e9, 0x15fafaef, 0x16fbfbed, + 0x1ffcfce3, 0x1cfdfde1, 0x19fefee7, 0x1affffe5, + }, { + /* Inverse MixColumns lookup table */ + 0x00000000, 0x0b0d090e, 0x161a121c, 0x1d171b12, + 0x2c342438, 0x27392d36, 0x3a2e3624, 0x31233f2a, + 0x58684870, 0x5365417e, 0x4e725a6c, 0x457f5362, + 0x745c6c48, 0x7f516546, 0x62467e54, 0x694b775a, + 0xb0d090e0, 0xbbdd99ee, 0xa6ca82fc, 0xadc78bf2, + 0x9ce4b4d8, 0x97e9bdd6, 0x8afea6c4, 0x81f3afca, + 0xe8b8d890, 0xe3b5d19e, 0xfea2ca8c, 0xf5afc382, + 0xc48cfca8, 0xcf81f5a6, 0xd296eeb4, 0xd99be7ba, + 0x7bbb3bdb, 0x70b632d5, 0x6da129c7, 0x66ac20c9, + 0x578f1fe3, 0x5c8216ed, 0x41950dff, 0x4a9804f1, + 0x23d373ab, 0x28de7aa5, 0x35c961b7, 0x3ec468b9, + 0x0fe75793, 0x04ea5e9d, 0x19fd458f, 0x12f04c81, + 0xcb6bab3b, 0xc066a235, 0xdd71b927, 0xd67cb029, + 0xe75f8f03, 0xec52860d, 0xf1459d1f, 0xfa489411, + 0x9303e34b, 0x980eea45, 0x8519f157, 0x8e14f859, + 0xbf37c773, 0xb43ace7d, 0xa92dd56f, 0xa220dc61, + 0xf66d76ad, 0xfd607fa3, 0xe07764b1, 0xeb7a6dbf, + 0xda595295, 0xd1545b9b, 0xcc434089, 0xc74e4987, + 0xae053edd, 0xa50837d3, 0xb81f2cc1, 0xb31225cf, + 0x82311ae5, 0x893c13eb, 0x942b08f9, 0x9f2601f7, + 0x46bde64d, 0x4db0ef43, 0x50a7f451, 0x5baafd5f, + 0x6a89c275, 0x6184cb7b, 0x7c93d069, 0x779ed967, + 0x1ed5ae3d, 0x15d8a733, 0x08cfbc21, 0x03c2b52f, + 0x32e18a05, 0x39ec830b, 0x24fb9819, 0x2ff69117, + 0x8dd64d76, 0x86db4478, 0x9bcc5f6a, 0x90c15664, + 0xa1e2694e, 0xaaef6040, 0xb7f87b52, 0xbcf5725c, + 0xd5be0506, 0xdeb30c08, 0xc3a4171a, 0xc8a91e14, + 0xf98a213e, 0xf2872830, 0xef903322, 0xe49d3a2c, + 0x3d06dd96, 0x360bd498, 0x2b1ccf8a, 0x2011c684, + 0x1132f9ae, 0x1a3ff0a0, 0x0728ebb2, 0x0c25e2bc, + 0x656e95e6, 0x6e639ce8, 0x737487fa, 0x78798ef4, + 0x495ab1de, 0x4257b8d0, 0x5f40a3c2, 0x544daacc, + 0xf7daec41, 0xfcd7e54f, 0xe1c0fe5d, 0xeacdf753, + 0xdbeec879, 0xd0e3c177, 0xcdf4da65, 0xc6f9d36b, + 0xafb2a431, 0xa4bfad3f, 0xb9a8b62d, 0xb2a5bf23, + 0x83868009, 0x888b8907, 0x959c9215, 0x9e919b1b, + 0x470a7ca1, 0x4c0775af, 0x51106ebd, 0x5a1d67b3, + 0x6b3e5899, 0x60335197, 0x7d244a85, 0x7629438b, + 0x1f6234d1, 0x146f3ddf, 0x097826cd, 0x02752fc3, + 0x335610e9, 0x385b19e7, 0x254c02f5, 0x2e410bfb, + 0x8c61d79a, 0x876cde94, 0x9a7bc586, 0x9176cc88, + 0xa055f3a2, 0xab58faac, 0xb64fe1be, 0xbd42e8b0, + 0xd4099fea, 0xdf0496e4, 0xc2138df6, 0xc91e84f8, + 0xf83dbbd2, 0xf330b2dc, 0xee27a9ce, 0xe52aa0c0, + 0x3cb1477a, 0x37bc4e74, 0x2aab5566, 0x21a65c68, + 0x10856342, 0x1b886a4c, 0x069f715e, 0x0d927850, + 0x64d90f0a, 0x6fd40604, 0x72c31d16, 0x79ce1418, + 0x48ed2b32, 0x43e0223c, 0x5ef7392e, 0x55fa3020, + 0x01b79aec, 0x0aba93e2, 0x17ad88f0, 0x1ca081fe, + 0x2d83bed4, 0x268eb7da, 0x3b99acc8, 0x3094a5c6, + 0x59dfd29c, 0x52d2db92, 0x4fc5c080, 0x44c8c98e, + 0x75ebf6a4, 0x7ee6ffaa, 0x63f1e4b8, 0x68fcedb6, + 0xb1670a0c, 0xba6a0302, 0xa77d1810, 0xac70111e, + 0x9d532e34, 0x965e273a, 0x8b493c28, 0x80443526, + 0xe90f427c, 0xe2024b72, 0xff155060, 0xf418596e, + 0xc53b6644, 0xce366f4a, 0xd3217458, 0xd82c7d56, + 0x7a0ca137, 0x7101a839, 0x6c16b32b, 0x671bba25, + 0x5638850f, 0x5d358c01, 0x40229713, 0x4b2f9e1d, + 0x2264e947, 0x2969e049, 0x347efb5b, 0x3f73f255, + 0x0e50cd7f, 0x055dc471, 0x184adf63, 0x1347d66d, + 0xcadc31d7, 0xc1d138d9, 0xdcc623cb, 0xd7cb2ac5, + 0xe6e815ef, 0xede51ce1, 0xf0f207f3, 0xfbff0efd, + 0x92b479a7, 0x99b970a9, 0x84ae6bbb, 0x8fa362b5, + 0xbe805d9f, 0xb58d5491, 0xa89a4f83, 0xa397468d, + } }; + union AES_STATE st = { .l = { + float64_val(env->vfp.regs[rm]), + float64_val(env->vfp.regs[rm + 1]) + } }; + int i; + + assert(decrypt < 2); + + for (i = 0; i < 16; i += 4) { + st.cols[i >> 2] = cpu_to_le32( + mc[decrypt][st.bytes[i]] ^ + rol32(mc[decrypt][st.bytes[i + 1]], 8) ^ + rol32(mc[decrypt][st.bytes[i + 2]], 16) ^ + rol32(mc[decrypt][st.bytes[i + 3]], 24)); + } + + env->vfp.regs[rd] = make_float64(st.l[0]); + env->vfp.regs[rd + 1] = make_float64(st.l[1]); +} |