| /* |
| * Copyright (c) 2011 The Chromium OS Authors. |
| * (C) Copyright 2011 NVIDIA Corporation www.nvidia.com |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| /* |
| * advanced encryption standard |
| * author: karl malbrain, malbrain@yahoo.com |
| * |
| * This work, including the source code, documentation |
| * and related data, is placed into the public domain. |
| * |
| * The orginal author is Karl Malbrain. |
| * |
| * THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY |
| * OF ANY KIND, NOT EVEN THE IMPLIED WARRANTY OF |
| * MERCHANTABILITY. THE AUTHOR OF THIS SOFTWARE, |
| * ASSUMES _NO_ RESPONSIBILITY FOR ANY CONSEQUENCE |
| * RESULTING FROM THE USE, MODIFICATION, OR |
| * REDISTRIBUTION OF THIS SOFTWARE. |
| */ |
| |
| #ifndef USE_HOSTCC |
| #include <common.h> |
| #else |
| #include <string.h> |
| #endif |
| #include "aes.h" |
| |
| /* forward s-box */ |
| static const u8 sbox[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 |
| }; |
| |
| /* inverse s-box */ |
| static const u8 inv_sbox[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 |
| }; |
| |
| /* combined Xtimes2[Sbox[]] */ |
| static const u8 x2_sbox[256] = { |
| 0xc6, 0xf8, 0xee, 0xf6, 0xff, 0xd6, 0xde, 0x91, |
| 0x60, 0x02, 0xce, 0x56, 0xe7, 0xb5, 0x4d, 0xec, |
| 0x8f, 0x1f, 0x89, 0xfa, 0xef, 0xb2, 0x8e, 0xfb, |
| 0x41, 0xb3, 0x5f, 0x45, 0x23, 0x53, 0xe4, 0x9b, |
| 0x75, 0xe1, 0x3d, 0x4c, 0x6c, 0x7e, 0xf5, 0x83, |
| 0x68, 0x51, 0xd1, 0xf9, 0xe2, 0xab, 0x62, 0x2a, |
| 0x08, 0x95, 0x46, 0x9d, 0x30, 0x37, 0x0a, 0x2f, |
| 0x0e, 0x24, 0x1b, 0xdf, 0xcd, 0x4e, 0x7f, 0xea, |
| 0x12, 0x1d, 0x58, 0x34, 0x36, 0xdc, 0xb4, 0x5b, |
| 0xa4, 0x76, 0xb7, 0x7d, 0x52, 0xdd, 0x5e, 0x13, |
| 0xa6, 0xb9, 0x00, 0xc1, 0x40, 0xe3, 0x79, 0xb6, |
| 0xd4, 0x8d, 0x67, 0x72, 0x94, 0x98, 0xb0, 0x85, |
| 0xbb, 0xc5, 0x4f, 0xed, 0x86, 0x9a, 0x66, 0x11, |
| 0x8a, 0xe9, 0x04, 0xfe, 0xa0, 0x78, 0x25, 0x4b, |
| 0xa2, 0x5d, 0x80, 0x05, 0x3f, 0x21, 0x70, 0xf1, |
| 0x63, 0x77, 0xaf, 0x42, 0x20, 0xe5, 0xfd, 0xbf, |
| 0x81, 0x18, 0x26, 0xc3, 0xbe, 0x35, 0x88, 0x2e, |
| 0x93, 0x55, 0xfc, 0x7a, 0xc8, 0xba, 0x32, 0xe6, |
| 0xc0, 0x19, 0x9e, 0xa3, 0x44, 0x54, 0x3b, 0x0b, |
| 0x8c, 0xc7, 0x6b, 0x28, 0xa7, 0xbc, 0x16, 0xad, |
| 0xdb, 0x64, 0x74, 0x14, 0x92, 0x0c, 0x48, 0xb8, |
| 0x9f, 0xbd, 0x43, 0xc4, 0x39, 0x31, 0xd3, 0xf2, |
| 0xd5, 0x8b, 0x6e, 0xda, 0x01, 0xb1, 0x9c, 0x49, |
| 0xd8, 0xac, 0xf3, 0xcf, 0xca, 0xf4, 0x47, 0x10, |
| 0x6f, 0xf0, 0x4a, 0x5c, 0x38, 0x57, 0x73, 0x97, |
| 0xcb, 0xa1, 0xe8, 0x3e, 0x96, 0x61, 0x0d, 0x0f, |
| 0xe0, 0x7c, 0x71, 0xcc, 0x90, 0x06, 0xf7, 0x1c, |
| 0xc2, 0x6a, 0xae, 0x69, 0x17, 0x99, 0x3a, 0x27, |
| 0xd9, 0xeb, 0x2b, 0x22, 0xd2, 0xa9, 0x07, 0x33, |
| 0x2d, 0x3c, 0x15, 0xc9, 0x87, 0xaa, 0x50, 0xa5, |
| 0x03, 0x59, 0x09, 0x1a, 0x65, 0xd7, 0x84, 0xd0, |
| 0x82, 0x29, 0x5a, 0x1e, 0x7b, 0xa8, 0x6d, 0x2c |
| }; |
| |
| /* combined Xtimes3[Sbox[]] */ |
| static const u8 x3_sbox[256] = { |
| 0xa5, 0x84, 0x99, 0x8d, 0x0d, 0xbd, 0xb1, 0x54, |
| 0x50, 0x03, 0xa9, 0x7d, 0x19, 0x62, 0xe6, 0x9a, |
| 0x45, 0x9d, 0x40, 0x87, 0x15, 0xeb, 0xc9, 0x0b, |
| 0xec, 0x67, 0xfd, 0xea, 0xbf, 0xf7, 0x96, 0x5b, |
| 0xc2, 0x1c, 0xae, 0x6a, 0x5a, 0x41, 0x02, 0x4f, |
| 0x5c, 0xf4, 0x34, 0x08, 0x93, 0x73, 0x53, 0x3f, |
| 0x0c, 0x52, 0x65, 0x5e, 0x28, 0xa1, 0x0f, 0xb5, |
| 0x09, 0x36, 0x9b, 0x3d, 0x26, 0x69, 0xcd, 0x9f, |
| 0x1b, 0x9e, 0x74, 0x2e, 0x2d, 0xb2, 0xee, 0xfb, |
| 0xf6, 0x4d, 0x61, 0xce, 0x7b, 0x3e, 0x71, 0x97, |
| 0xf5, 0x68, 0x00, 0x2c, 0x60, 0x1f, 0xc8, 0xed, |
| 0xbe, 0x46, 0xd9, 0x4b, 0xde, 0xd4, 0xe8, 0x4a, |
| 0x6b, 0x2a, 0xe5, 0x16, 0xc5, 0xd7, 0x55, 0x94, |
| 0xcf, 0x10, 0x06, 0x81, 0xf0, 0x44, 0xba, 0xe3, |
| 0xf3, 0xfe, 0xc0, 0x8a, 0xad, 0xbc, 0x48, 0x04, |
| 0xdf, 0xc1, 0x75, 0x63, 0x30, 0x1a, 0x0e, 0x6d, |
| 0x4c, 0x14, 0x35, 0x2f, 0xe1, 0xa2, 0xcc, 0x39, |
| 0x57, 0xf2, 0x82, 0x47, 0xac, 0xe7, 0x2b, 0x95, |
| 0xa0, 0x98, 0xd1, 0x7f, 0x66, 0x7e, 0xab, 0x83, |
| 0xca, 0x29, 0xd3, 0x3c, 0x79, 0xe2, 0x1d, 0x76, |
| 0x3b, 0x56, 0x4e, 0x1e, 0xdb, 0x0a, 0x6c, 0xe4, |
| 0x5d, 0x6e, 0xef, 0xa6, 0xa8, 0xa4, 0x37, 0x8b, |
| 0x32, 0x43, 0x59, 0xb7, 0x8c, 0x64, 0xd2, 0xe0, |
| 0xb4, 0xfa, 0x07, 0x25, 0xaf, 0x8e, 0xe9, 0x18, |
| 0xd5, 0x88, 0x6f, 0x72, 0x24, 0xf1, 0xc7, 0x51, |
| 0x23, 0x7c, 0x9c, 0x21, 0xdd, 0xdc, 0x86, 0x85, |
| 0x90, 0x42, 0xc4, 0xaa, 0xd8, 0x05, 0x01, 0x12, |
| 0xa3, 0x5f, 0xf9, 0xd0, 0x91, 0x58, 0x27, 0xb9, |
| 0x38, 0x13, 0xb3, 0x33, 0xbb, 0x70, 0x89, 0xa7, |
| 0xb6, 0x22, 0x92, 0x20, 0x49, 0xff, 0x78, 0x7a, |
| 0x8f, 0xf8, 0x80, 0x17, 0xda, 0x31, 0xc6, 0xb8, |
| 0xc3, 0xb0, 0x77, 0x11, 0xcb, 0xfc, 0xd6, 0x3a |
| }; |
| |
| /* |
| * modular multiplication tables based on: |
| * |
| * Xtime2[x] = (x & 0x80 ? 0x1b : 0) ^ (x + x) |
| * Xtime3[x] = x^Xtime2[x]; |
| */ |
| static const u8 x_time_9[256] = { |
| 0x00, 0x09, 0x12, 0x1b, 0x24, 0x2d, 0x36, 0x3f, |
| 0x48, 0x41, 0x5a, 0x53, 0x6c, 0x65, 0x7e, 0x77, |
| 0x90, 0x99, 0x82, 0x8b, 0xb4, 0xbd, 0xa6, 0xaf, |
| 0xd8, 0xd1, 0xca, 0xc3, 0xfc, 0xf5, 0xee, 0xe7, |
| 0x3b, 0x32, 0x29, 0x20, 0x1f, 0x16, 0x0d, 0x04, |
| 0x73, 0x7a, 0x61, 0x68, 0x57, 0x5e, 0x45, 0x4c, |
| 0xab, 0xa2, 0xb9, 0xb0, 0x8f, 0x86, 0x9d, 0x94, |
| 0xe3, 0xea, 0xf1, 0xf8, 0xc7, 0xce, 0xd5, 0xdc, |
| 0x76, 0x7f, 0x64, 0x6d, 0x52, 0x5b, 0x40, 0x49, |
| 0x3e, 0x37, 0x2c, 0x25, 0x1a, 0x13, 0x08, 0x01, |
| 0xe6, 0xef, 0xf4, 0xfd, 0xc2, 0xcb, 0xd0, 0xd9, |
| 0xae, 0xa7, 0xbc, 0xb5, 0x8a, 0x83, 0x98, 0x91, |
| 0x4d, 0x44, 0x5f, 0x56, 0x69, 0x60, 0x7b, 0x72, |
| 0x05, 0x0c, 0x17, 0x1e, 0x21, 0x28, 0x33, 0x3a, |
| 0xdd, 0xd4, 0xcf, 0xc6, 0xf9, 0xf0, 0xeb, 0xe2, |
| 0x95, 0x9c, 0x87, 0x8e, 0xb1, 0xb8, 0xa3, 0xaa, |
| 0xec, 0xe5, 0xfe, 0xf7, 0xc8, 0xc1, 0xda, 0xd3, |
| 0xa4, 0xad, 0xb6, 0xbf, 0x80, 0x89, 0x92, 0x9b, |
| 0x7c, 0x75, 0x6e, 0x67, 0x58, 0x51, 0x4a, 0x43, |
| 0x34, 0x3d, 0x26, 0x2f, 0x10, 0x19, 0x02, 0x0b, |
| 0xd7, 0xde, 0xc5, 0xcc, 0xf3, 0xfa, 0xe1, 0xe8, |
| 0x9f, 0x96, 0x8d, 0x84, 0xbb, 0xb2, 0xa9, 0xa0, |
| 0x47, 0x4e, 0x55, 0x5c, 0x63, 0x6a, 0x71, 0x78, |
| 0x0f, 0x06, 0x1d, 0x14, 0x2b, 0x22, 0x39, 0x30, |
| 0x9a, 0x93, 0x88, 0x81, 0xbe, 0xb7, 0xac, 0xa5, |
| 0xd2, 0xdb, 0xc0, 0xc9, 0xf6, 0xff, 0xe4, 0xed, |
| 0x0a, 0x03, 0x18, 0x11, 0x2e, 0x27, 0x3c, 0x35, |
| 0x42, 0x4b, 0x50, 0x59, 0x66, 0x6f, 0x74, 0x7d, |
| 0xa1, 0xa8, 0xb3, 0xba, 0x85, 0x8c, 0x97, 0x9e, |
| 0xe9, 0xe0, 0xfb, 0xf2, 0xcd, 0xc4, 0xdf, 0xd6, |
| 0x31, 0x38, 0x23, 0x2a, 0x15, 0x1c, 0x07, 0x0e, |
| 0x79, 0x70, 0x6b, 0x62, 0x5d, 0x54, 0x4f, 0x46 |
| }; |
| |
| static const u8 x_time_b[256] = { |
| 0x00, 0x0b, 0x16, 0x1d, 0x2c, 0x27, 0x3a, 0x31, |
| 0x58, 0x53, 0x4e, 0x45, 0x74, 0x7f, 0x62, 0x69, |
| 0xb0, 0xbb, 0xa6, 0xad, 0x9c, 0x97, 0x8a, 0x81, |
| 0xe8, 0xe3, 0xfe, 0xf5, 0xc4, 0xcf, 0xd2, 0xd9, |
| 0x7b, 0x70, 0x6d, 0x66, 0x57, 0x5c, 0x41, 0x4a, |
| 0x23, 0x28, 0x35, 0x3e, 0x0f, 0x04, 0x19, 0x12, |
| 0xcb, 0xc0, 0xdd, 0xd6, 0xe7, 0xec, 0xf1, 0xfa, |
| 0x93, 0x98, 0x85, 0x8e, 0xbf, 0xb4, 0xa9, 0xa2, |
| 0xf6, 0xfd, 0xe0, 0xeb, 0xda, 0xd1, 0xcc, 0xc7, |
| 0xae, 0xa5, 0xb8, 0xb3, 0x82, 0x89, 0x94, 0x9f, |
| 0x46, 0x4d, 0x50, 0x5b, 0x6a, 0x61, 0x7c, 0x77, |
| 0x1e, 0x15, 0x08, 0x03, 0x32, 0x39, 0x24, 0x2f, |
| 0x8d, 0x86, 0x9b, 0x90, 0xa1, 0xaa, 0xb7, 0xbc, |
| 0xd5, 0xde, 0xc3, 0xc8, 0xf9, 0xf2, 0xef, 0xe4, |
| 0x3d, 0x36, 0x2b, 0x20, 0x11, 0x1a, 0x07, 0x0c, |
| 0x65, 0x6e, 0x73, 0x78, 0x49, 0x42, 0x5f, 0x54, |
| 0xf7, 0xfc, 0xe1, 0xea, 0xdb, 0xd0, 0xcd, 0xc6, |
| 0xaf, 0xa4, 0xb9, 0xb2, 0x83, 0x88, 0x95, 0x9e, |
| 0x47, 0x4c, 0x51, 0x5a, 0x6b, 0x60, 0x7d, 0x76, |
| 0x1f, 0x14, 0x09, 0x02, 0x33, 0x38, 0x25, 0x2e, |
| 0x8c, 0x87, 0x9a, 0x91, 0xa0, 0xab, 0xb6, 0xbd, |
| 0xd4, 0xdf, 0xc2, 0xc9, 0xf8, 0xf3, 0xee, 0xe5, |
| 0x3c, 0x37, 0x2a, 0x21, 0x10, 0x1b, 0x06, 0x0d, |
| 0x64, 0x6f, 0x72, 0x79, 0x48, 0x43, 0x5e, 0x55, |
| 0x01, 0x0a, 0x17, 0x1c, 0x2d, 0x26, 0x3b, 0x30, |
| 0x59, 0x52, 0x4f, 0x44, 0x75, 0x7e, 0x63, 0x68, |
| 0xb1, 0xba, 0xa7, 0xac, 0x9d, 0x96, 0x8b, 0x80, |
| 0xe9, 0xe2, 0xff, 0xf4, 0xc5, 0xce, 0xd3, 0xd8, |
| 0x7a, 0x71, 0x6c, 0x67, 0x56, 0x5d, 0x40, 0x4b, |
| 0x22, 0x29, 0x34, 0x3f, 0x0e, 0x05, 0x18, 0x13, |
| 0xca, 0xc1, 0xdc, 0xd7, 0xe6, 0xed, 0xf0, 0xfb, |
| 0x92, 0x99, 0x84, 0x8f, 0xbe, 0xb5, 0xa8, 0xa3 |
| }; |
| |
| static const u8 x_time_d[256] = { |
| 0x00, 0x0d, 0x1a, 0x17, 0x34, 0x39, 0x2e, 0x23, |
| 0x68, 0x65, 0x72, 0x7f, 0x5c, 0x51, 0x46, 0x4b, |
| 0xd0, 0xdd, 0xca, 0xc7, 0xe4, 0xe9, 0xfe, 0xf3, |
| 0xb8, 0xb5, 0xa2, 0xaf, 0x8c, 0x81, 0x96, 0x9b, |
| 0xbb, 0xb6, 0xa1, 0xac, 0x8f, 0x82, 0x95, 0x98, |
| 0xd3, 0xde, 0xc9, 0xc4, 0xe7, 0xea, 0xfd, 0xf0, |
| 0x6b, 0x66, 0x71, 0x7c, 0x5f, 0x52, 0x45, 0x48, |
| 0x03, 0x0e, 0x19, 0x14, 0x37, 0x3a, 0x2d, 0x20, |
| 0x6d, 0x60, 0x77, 0x7a, 0x59, 0x54, 0x43, 0x4e, |
| 0x05, 0x08, 0x1f, 0x12, 0x31, 0x3c, 0x2b, 0x26, |
| 0xbd, 0xb0, 0xa7, 0xaa, 0x89, 0x84, 0x93, 0x9e, |
| 0xd5, 0xd8, 0xcf, 0xc2, 0xe1, 0xec, 0xfb, 0xf6, |
| 0xd6, 0xdb, 0xcc, 0xc1, 0xe2, 0xef, 0xf8, 0xf5, |
| 0xbe, 0xb3, 0xa4, 0xa9, 0x8a, 0x87, 0x90, 0x9d, |
| 0x06, 0x0b, 0x1c, 0x11, 0x32, 0x3f, 0x28, 0x25, |
| 0x6e, 0x63, 0x74, 0x79, 0x5a, 0x57, 0x40, 0x4d, |
| 0xda, 0xd7, 0xc0, 0xcd, 0xee, 0xe3, 0xf4, 0xf9, |
| 0xb2, 0xbf, 0xa8, 0xa5, 0x86, 0x8b, 0x9c, 0x91, |
| 0x0a, 0x07, 0x10, 0x1d, 0x3e, 0x33, 0x24, 0x29, |
| 0x62, 0x6f, 0x78, 0x75, 0x56, 0x5b, 0x4c, 0x41, |
| 0x61, 0x6c, 0x7b, 0x76, 0x55, 0x58, 0x4f, 0x42, |
| 0x09, 0x04, 0x13, 0x1e, 0x3d, 0x30, 0x27, 0x2a, |
| 0xb1, 0xbc, 0xab, 0xa6, 0x85, 0x88, 0x9f, 0x92, |
| 0xd9, 0xd4, 0xc3, 0xce, 0xed, 0xe0, 0xf7, 0xfa, |
| 0xb7, 0xba, 0xad, 0xa0, 0x83, 0x8e, 0x99, 0x94, |
| 0xdf, 0xd2, 0xc5, 0xc8, 0xeb, 0xe6, 0xf1, 0xfc, |
| 0x67, 0x6a, 0x7d, 0x70, 0x53, 0x5e, 0x49, 0x44, |
| 0x0f, 0x02, 0x15, 0x18, 0x3b, 0x36, 0x21, 0x2c, |
| 0x0c, 0x01, 0x16, 0x1b, 0x38, 0x35, 0x22, 0x2f, |
| 0x64, 0x69, 0x7e, 0x73, 0x50, 0x5d, 0x4a, 0x47, |
| 0xdc, 0xd1, 0xc6, 0xcb, 0xe8, 0xe5, 0xf2, 0xff, |
| 0xb4, 0xb9, 0xae, 0xa3, 0x80, 0x8d, 0x9a, 0x97 |
| }; |
| |
| static const u8 x_time_e[256] = { |
| 0x00, 0x0e, 0x1c, 0x12, 0x38, 0x36, 0x24, 0x2a, |
| 0x70, 0x7e, 0x6c, 0x62, 0x48, 0x46, 0x54, 0x5a, |
| 0xe0, 0xee, 0xfc, 0xf2, 0xd8, 0xd6, 0xc4, 0xca, |
| 0x90, 0x9e, 0x8c, 0x82, 0xa8, 0xa6, 0xb4, 0xba, |
| 0xdb, 0xd5, 0xc7, 0xc9, 0xe3, 0xed, 0xff, 0xf1, |
| 0xab, 0xa5, 0xb7, 0xb9, 0x93, 0x9d, 0x8f, 0x81, |
| 0x3b, 0x35, 0x27, 0x29, 0x03, 0x0d, 0x1f, 0x11, |
| 0x4b, 0x45, 0x57, 0x59, 0x73, 0x7d, 0x6f, 0x61, |
| 0xad, 0xa3, 0xb1, 0xbf, 0x95, 0x9b, 0x89, 0x87, |
| 0xdd, 0xd3, 0xc1, 0xcf, 0xe5, 0xeb, 0xf9, 0xf7, |
| 0x4d, 0x43, 0x51, 0x5f, 0x75, 0x7b, 0x69, 0x67, |
| 0x3d, 0x33, 0x21, 0x2f, 0x05, 0x0b, 0x19, 0x17, |
| 0x76, 0x78, 0x6a, 0x64, 0x4e, 0x40, 0x52, 0x5c, |
| 0x06, 0x08, 0x1a, 0x14, 0x3e, 0x30, 0x22, 0x2c, |
| 0x96, 0x98, 0x8a, 0x84, 0xae, 0xa0, 0xb2, 0xbc, |
| 0xe6, 0xe8, 0xfa, 0xf4, 0xde, 0xd0, 0xc2, 0xcc, |
| 0x41, 0x4f, 0x5d, 0x53, 0x79, 0x77, 0x65, 0x6b, |
| 0x31, 0x3f, 0x2d, 0x23, 0x09, 0x07, 0x15, 0x1b, |
| 0xa1, 0xaf, 0xbd, 0xb3, 0x99, 0x97, 0x85, 0x8b, |
| 0xd1, 0xdf, 0xcd, 0xc3, 0xe9, 0xe7, 0xf5, 0xfb, |
| 0x9a, 0x94, 0x86, 0x88, 0xa2, 0xac, 0xbe, 0xb0, |
| 0xea, 0xe4, 0xf6, 0xf8, 0xd2, 0xdc, 0xce, 0xc0, |
| 0x7a, 0x74, 0x66, 0x68, 0x42, 0x4c, 0x5e, 0x50, |
| 0x0a, 0x04, 0x16, 0x18, 0x32, 0x3c, 0x2e, 0x20, |
| 0xec, 0xe2, 0xf0, 0xfe, 0xd4, 0xda, 0xc8, 0xc6, |
| 0x9c, 0x92, 0x80, 0x8e, 0xa4, 0xaa, 0xb8, 0xb6, |
| 0x0c, 0x02, 0x10, 0x1e, 0x34, 0x3a, 0x28, 0x26, |
| 0x7c, 0x72, 0x60, 0x6e, 0x44, 0x4a, 0x58, 0x56, |
| 0x37, 0x39, 0x2b, 0x25, 0x0f, 0x01, 0x13, 0x1d, |
| 0x47, 0x49, 0x5b, 0x55, 0x7f, 0x71, 0x63, 0x6d, |
| 0xd7, 0xd9, 0xcb, 0xc5, 0xef, 0xe1, 0xf3, 0xfd, |
| 0xa7, 0xa9, 0xbb, 0xb5, 0x9f, 0x91, 0x83, 0x8d |
| }; |
| |
| /* |
| * Exchanges columns in each of 4 rows |
| * row0 - unchanged, row1- shifted left 1, |
| * row2 - shifted left 2 and row3 - shifted left 3 |
| */ |
| static void shift_rows(u8 *state) |
| { |
| u8 tmp; |
| |
| /* just substitute row 0 */ |
| state[0] = sbox[state[0]]; |
| state[4] = sbox[state[4]]; |
| state[8] = sbox[state[8]]; |
| state[12] = sbox[state[12]]; |
| |
| /* rotate row 1 */ |
| tmp = sbox[state[1]]; |
| state[1] = sbox[state[5]]; |
| state[5] = sbox[state[9]]; |
| state[9] = sbox[state[13]]; |
| state[13] = tmp; |
| |
| /* rotate row 2 */ |
| tmp = sbox[state[2]]; |
| state[2] = sbox[state[10]]; |
| state[10] = tmp; |
| tmp = sbox[state[6]]; |
| state[6] = sbox[state[14]]; |
| state[14] = tmp; |
| |
| /* rotate row 3 */ |
| tmp = sbox[state[15]]; |
| state[15] = sbox[state[11]]; |
| state[11] = sbox[state[7]]; |
| state[7] = sbox[state[3]]; |
| state[3] = tmp; |
| } |
| |
| /* |
| * restores columns in each of 4 rows |
| * row0 - unchanged, row1- shifted right 1, |
| * row2 - shifted right 2 and row3 - shifted right 3 |
| */ |
| static void inv_shift_rows(u8 *state) |
| { |
| u8 tmp; |
| |
| /* restore row 0 */ |
| state[0] = inv_sbox[state[0]]; |
| state[4] = inv_sbox[state[4]]; |
| state[8] = inv_sbox[state[8]]; |
| state[12] = inv_sbox[state[12]]; |
| |
| /* restore row 1 */ |
| tmp = inv_sbox[state[13]]; |
| state[13] = inv_sbox[state[9]]; |
| state[9] = inv_sbox[state[5]]; |
| state[5] = inv_sbox[state[1]]; |
| state[1] = tmp; |
| |
| /* restore row 2 */ |
| tmp = inv_sbox[state[2]]; |
| state[2] = inv_sbox[state[10]]; |
| state[10] = tmp; |
| tmp = inv_sbox[state[6]]; |
| state[6] = inv_sbox[state[14]]; |
| state[14] = tmp; |
| |
| /* restore row 3 */ |
| tmp = inv_sbox[state[3]]; |
| state[3] = inv_sbox[state[7]]; |
| state[7] = inv_sbox[state[11]]; |
| state[11] = inv_sbox[state[15]]; |
| state[15] = tmp; |
| } |
| |
| /* recombine and mix each row in a column */ |
| static void mix_sub_columns(u8 *state) |
| { |
| u8 tmp[4 * AES_STATECOLS]; |
| |
| /* mixing column 0 */ |
| tmp[0] = x2_sbox[state[0]] ^ x3_sbox[state[5]] ^ |
| sbox[state[10]] ^ sbox[state[15]]; |
| tmp[1] = sbox[state[0]] ^ x2_sbox[state[5]] ^ |
| x3_sbox[state[10]] ^ sbox[state[15]]; |
| tmp[2] = sbox[state[0]] ^ sbox[state[5]] ^ |
| x2_sbox[state[10]] ^ x3_sbox[state[15]]; |
| tmp[3] = x3_sbox[state[0]] ^ sbox[state[5]] ^ |
| sbox[state[10]] ^ x2_sbox[state[15]]; |
| |
| /* mixing column 1 */ |
| tmp[4] = x2_sbox[state[4]] ^ x3_sbox[state[9]] ^ |
| sbox[state[14]] ^ sbox[state[3]]; |
| tmp[5] = sbox[state[4]] ^ x2_sbox[state[9]] ^ |
| x3_sbox[state[14]] ^ sbox[state[3]]; |
| tmp[6] = sbox[state[4]] ^ sbox[state[9]] ^ |
| x2_sbox[state[14]] ^ x3_sbox[state[3]]; |
| tmp[7] = x3_sbox[state[4]] ^ sbox[state[9]] ^ |
| sbox[state[14]] ^ x2_sbox[state[3]]; |
| |
| /* mixing column 2 */ |
| tmp[8] = x2_sbox[state[8]] ^ x3_sbox[state[13]] ^ |
| sbox[state[2]] ^ sbox[state[7]]; |
| tmp[9] = sbox[state[8]] ^ x2_sbox[state[13]] ^ |
| x3_sbox[state[2]] ^ sbox[state[7]]; |
| tmp[10] = sbox[state[8]] ^ sbox[state[13]] ^ |
| x2_sbox[state[2]] ^ x3_sbox[state[7]]; |
| tmp[11] = x3_sbox[state[8]] ^ sbox[state[13]] ^ |
| sbox[state[2]] ^ x2_sbox[state[7]]; |
| |
| /* mixing column 3 */ |
| tmp[12] = x2_sbox[state[12]] ^ x3_sbox[state[1]] ^ |
| sbox[state[6]] ^ sbox[state[11]]; |
| tmp[13] = sbox[state[12]] ^ x2_sbox[state[1]] ^ |
| x3_sbox[state[6]] ^ sbox[state[11]]; |
| tmp[14] = sbox[state[12]] ^ sbox[state[1]] ^ |
| x2_sbox[state[6]] ^ x3_sbox[state[11]]; |
| tmp[15] = x3_sbox[state[12]] ^ sbox[state[1]] ^ |
| sbox[state[6]] ^ x2_sbox[state[11]]; |
| |
| memcpy(state, tmp, sizeof(tmp)); |
| } |
| |
| /* restore and un-mix each row in a column */ |
| static void inv_mix_sub_columns(u8 *state) |
| { |
| u8 tmp[4 * AES_STATECOLS]; |
| int i; |
| |
| /* restore column 0 */ |
| tmp[0] = x_time_e[state[0]] ^ x_time_b[state[1]] ^ |
| x_time_d[state[2]] ^ x_time_9[state[3]]; |
| tmp[5] = x_time_9[state[0]] ^ x_time_e[state[1]] ^ |
| x_time_b[state[2]] ^ x_time_d[state[3]]; |
| tmp[10] = x_time_d[state[0]] ^ x_time_9[state[1]] ^ |
| x_time_e[state[2]] ^ x_time_b[state[3]]; |
| tmp[15] = x_time_b[state[0]] ^ x_time_d[state[1]] ^ |
| x_time_9[state[2]] ^ x_time_e[state[3]]; |
| |
| /* restore column 1 */ |
| tmp[4] = x_time_e[state[4]] ^ x_time_b[state[5]] ^ |
| x_time_d[state[6]] ^ x_time_9[state[7]]; |
| tmp[9] = x_time_9[state[4]] ^ x_time_e[state[5]] ^ |
| x_time_b[state[6]] ^ x_time_d[state[7]]; |
| tmp[14] = x_time_d[state[4]] ^ x_time_9[state[5]] ^ |
| x_time_e[state[6]] ^ x_time_b[state[7]]; |
| tmp[3] = x_time_b[state[4]] ^ x_time_d[state[5]] ^ |
| x_time_9[state[6]] ^ x_time_e[state[7]]; |
| |
| /* restore column 2 */ |
| tmp[8] = x_time_e[state[8]] ^ x_time_b[state[9]] ^ |
| x_time_d[state[10]] ^ x_time_9[state[11]]; |
| tmp[13] = x_time_9[state[8]] ^ x_time_e[state[9]] ^ |
| x_time_b[state[10]] ^ x_time_d[state[11]]; |
| tmp[2] = x_time_d[state[8]] ^ x_time_9[state[9]] ^ |
| x_time_e[state[10]] ^ x_time_b[state[11]]; |
| tmp[7] = x_time_b[state[8]] ^ x_time_d[state[9]] ^ |
| x_time_9[state[10]] ^ x_time_e[state[11]]; |
| |
| /* restore column 3 */ |
| tmp[12] = x_time_e[state[12]] ^ x_time_b[state[13]] ^ |
| x_time_d[state[14]] ^ x_time_9[state[15]]; |
| tmp[1] = x_time_9[state[12]] ^ x_time_e[state[13]] ^ |
| x_time_b[state[14]] ^ x_time_d[state[15]]; |
| tmp[6] = x_time_d[state[12]] ^ x_time_9[state[13]] ^ |
| x_time_e[state[14]] ^ x_time_b[state[15]]; |
| tmp[11] = x_time_b[state[12]] ^ x_time_d[state[13]] ^ |
| x_time_9[state[14]] ^ x_time_e[state[15]]; |
| |
| for (i = 0; i < 4 * AES_STATECOLS; i++) |
| state[i] = inv_sbox[tmp[i]]; |
| } |
| |
| /* |
| * encrypt/decrypt columns of the key |
| * n.b. you can replace this with byte-wise xor if you wish. |
| */ |
| static void add_round_key(u32 *state, u32 *key) |
| { |
| int idx; |
| |
| for (idx = 0; idx < 4; idx++) |
| state[idx] ^= key[idx]; |
| } |
| |
| static u8 rcon[11] = { |
| 0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36 |
| }; |
| |
| /* produce AES_STATECOLS bytes for each round */ |
| void aes_expand_key(u8 *key, u8 *expkey) |
| { |
| u8 tmp0, tmp1, tmp2, tmp3, tmp4; |
| u32 idx; |
| |
| memcpy(expkey, key, AES_KEYCOLS * 4); |
| |
| for (idx = AES_KEYCOLS; idx < AES_STATECOLS * (AES_ROUNDS + 1); idx++) { |
| tmp0 = expkey[4*idx - 4]; |
| tmp1 = expkey[4*idx - 3]; |
| tmp2 = expkey[4*idx - 2]; |
| tmp3 = expkey[4*idx - 1]; |
| if (!(idx % AES_KEYCOLS)) { |
| tmp4 = tmp3; |
| tmp3 = sbox[tmp0]; |
| tmp0 = sbox[tmp1] ^ rcon[idx / AES_KEYCOLS]; |
| tmp1 = sbox[tmp2]; |
| tmp2 = sbox[tmp4]; |
| } else if ((AES_KEYCOLS > 6) && (idx % AES_KEYCOLS == 4)) { |
| tmp0 = sbox[tmp0]; |
| tmp1 = sbox[tmp1]; |
| tmp2 = sbox[tmp2]; |
| tmp3 = sbox[tmp3]; |
| } |
| |
| expkey[4*idx+0] = expkey[4*idx - 4*AES_KEYCOLS + 0] ^ tmp0; |
| expkey[4*idx+1] = expkey[4*idx - 4*AES_KEYCOLS + 1] ^ tmp1; |
| expkey[4*idx+2] = expkey[4*idx - 4*AES_KEYCOLS + 2] ^ tmp2; |
| expkey[4*idx+3] = expkey[4*idx - 4*AES_KEYCOLS + 3] ^ tmp3; |
| } |
| } |
| |
| /* encrypt one 128 bit block */ |
| void aes_encrypt(u8 *in, u8 *expkey, u8 *out) |
| { |
| u8 state[AES_STATECOLS * 4]; |
| u32 round; |
| |
| memcpy(state, in, AES_STATECOLS * 4); |
| add_round_key((u32 *)state, (u32 *)expkey); |
| |
| for (round = 1; round < AES_ROUNDS + 1; round++) { |
| if (round < AES_ROUNDS) |
| mix_sub_columns(state); |
| else |
| shift_rows(state); |
| |
| add_round_key((u32 *)state, |
| (u32 *)expkey + round * AES_STATECOLS); |
| } |
| |
| memcpy(out, state, sizeof(state)); |
| } |
| |
| void aes_decrypt(u8 *in, u8 *expkey, u8 *out) |
| { |
| u8 state[AES_STATECOLS * 4]; |
| int round; |
| |
| memcpy(state, in, sizeof(state)); |
| |
| add_round_key((u32 *)state, |
| (u32 *)expkey + AES_ROUNDS * AES_STATECOLS); |
| inv_shift_rows(state); |
| |
| for (round = AES_ROUNDS; round--; ) { |
| add_round_key((u32 *)state, |
| (u32 *)expkey + round * AES_STATECOLS); |
| if (round) |
| inv_mix_sub_columns(state); |
| } |
| |
| memcpy(out, state, sizeof(state)); |
| } |
| |
| static void debug_print_vector(char *name, u32 num_bytes, u8 *data) |
| { |
| #ifdef DEBUG |
| printf("%s [%d] @0x%08x", name, num_bytes, (u32)data); |
| print_buffer(0, data, 1, num_bytes, 16); |
| #endif |
| } |
| |
| void aes_apply_cbc_chain_data(u8 *cbc_chain_data, u8 *src, u8 *dst) |
| { |
| int i; |
| |
| for (i = 0; i < AES_KEY_LENGTH; i++) |
| *dst++ = *src++ ^ *cbc_chain_data++; |
| } |
| |
| void aes_cbc_encrypt_blocks(u8 *key_exp, u8 *src, u8 *dst, u32 num_aes_blocks) |
| { |
| u8 zero_key[AES_KEY_LENGTH] = { 0 }; |
| u8 tmp_data[AES_KEY_LENGTH]; |
| /* Convenient array of 0's for IV */ |
| u8 *cbc_chain_data = zero_key; |
| u32 i; |
| |
| for (i = 0; i < num_aes_blocks; i++) { |
| debug("encrypt_object: block %d of %d\n", i, num_aes_blocks); |
| debug_print_vector("AES Src", AES_KEY_LENGTH, src); |
| |
| /* Apply the chain data */ |
| aes_apply_cbc_chain_data(cbc_chain_data, src, tmp_data); |
| debug_print_vector("AES Xor", AES_KEY_LENGTH, tmp_data); |
| |
| /* Encrypt the AES block */ |
| aes_encrypt(tmp_data, key_exp, dst); |
| debug_print_vector("AES Dst", AES_KEY_LENGTH, dst); |
| |
| /* Update pointers for next loop. */ |
| cbc_chain_data = dst; |
| src += AES_KEY_LENGTH; |
| dst += AES_KEY_LENGTH; |
| } |
| } |
| |
| void aes_cbc_decrypt_blocks(u8 *key_exp, u8 *src, u8 *dst, u32 num_aes_blocks) |
| { |
| u8 tmp_data[AES_KEY_LENGTH], tmp_block[AES_KEY_LENGTH]; |
| /* Convenient array of 0's for IV */ |
| u8 cbc_chain_data[AES_KEY_LENGTH] = { 0 }; |
| u32 i; |
| |
| for (i = 0; i < num_aes_blocks; i++) { |
| debug("encrypt_object: block %d of %d\n", i, num_aes_blocks); |
| debug_print_vector("AES Src", AES_KEY_LENGTH, src); |
| |
| memcpy(tmp_block, src, AES_KEY_LENGTH); |
| |
| /* Decrypt the AES block */ |
| aes_decrypt(src, key_exp, tmp_data); |
| debug_print_vector("AES Xor", AES_KEY_LENGTH, tmp_data); |
| |
| /* Apply the chain data */ |
| aes_apply_cbc_chain_data(cbc_chain_data, tmp_data, dst); |
| debug_print_vector("AES Dst", AES_KEY_LENGTH, dst); |
| |
| /* Update pointers for next loop. */ |
| memcpy(cbc_chain_data, tmp_block, AES_KEY_LENGTH); |
| src += AES_KEY_LENGTH; |
| dst += AES_KEY_LENGTH; |
| } |
| } |