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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,177 @@ | ||
| /* | ||
| --------------------------------------------------------------------------- | ||
| Copyright (c) 1998-2013, Brian Gladman, Worcester, UK. All rights reserved. | ||
| The redistribution and use of this software (with or without changes) | ||
| is allowed without the payment of fees or royalties provided that: | ||
| source code distributions include the above copyright notice, this | ||
| list of conditions and the following disclaimer; | ||
| binary distributions include the above copyright notice, this list | ||
| of conditions and the following disclaimer in their documentation. | ||
| This software is provided 'as is' with no explicit or implied warranties | ||
| in respect of its operation, including, but not limited to, correctness | ||
| and fitness for purpose. | ||
| --------------------------------------------------------------------------- | ||
| Issue Date: 20/12/2007 | ||
| */ | ||
|
|
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| #include <stdint.h> | ||
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| #if defined(__cplusplus) | ||
| extern "C" | ||
| { | ||
| #endif | ||
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| #define TABLE_ALIGN 32 | ||
| #define WPOLY 0x011b | ||
| #define N_COLS 4 | ||
| #define AES_BLOCK_SIZE 16 | ||
| #define RC_LENGTH (5 * (AES_BLOCK_SIZE / 4 - 2)) | ||
|
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||
| #if defined(_MSC_VER) | ||
| #define ALIGN __declspec(align(TABLE_ALIGN)) | ||
| #elif defined(__GNUC__) | ||
| #define ALIGN __attribute__ ((aligned(16))) | ||
| #else | ||
| #define ALIGN | ||
| #endif | ||
|
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||
| #define rf1(r,c) (r) | ||
| #define word_in(x,c) (*((uint32_t*)(x)+(c))) | ||
| #define word_out(x,c,v) (*((uint32_t*)(x)+(c)) = (v)) | ||
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| #define s(x,c) x[c] | ||
| #define si(y,x,c) (s(y,c) = word_in(x, c)) | ||
| #define so(y,x,c) word_out(y, c, s(x,c)) | ||
| #define state_in(y,x) si(y,x,0); si(y,x,1); si(y,x,2); si(y,x,3) | ||
| #define state_out(y,x) so(y,x,0); so(y,x,1); so(y,x,2); so(y,x,3) | ||
| #define round(rm,y,x,k) rm(y,x,k,0); rm(y,x,k,1); rm(y,x,k,2); rm(y,x,k,3) | ||
| #define to_byte(x) ((x) & 0xff) | ||
| #define bval(x,n) to_byte((x) >> (8 * (n))) | ||
|
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||
| #define fwd_var(x,r,c)\ | ||
| ( r == 0 ? ( c == 0 ? s(x,0) : c == 1 ? s(x,1) : c == 2 ? s(x,2) : s(x,3))\ | ||
| : r == 1 ? ( c == 0 ? s(x,1) : c == 1 ? s(x,2) : c == 2 ? s(x,3) : s(x,0))\ | ||
| : r == 2 ? ( c == 0 ? s(x,2) : c == 1 ? s(x,3) : c == 2 ? s(x,0) : s(x,1))\ | ||
| : ( c == 0 ? s(x,3) : c == 1 ? s(x,0) : c == 2 ? s(x,1) : s(x,2))) | ||
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| #define fwd_rnd(y,x,k,c) (s(y,c) = (k)[c] ^ four_tables(x,t_use(f,n),fwd_var,rf1,c)) | ||
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| #define sb_data(w) {\ | ||
| w(0x63), w(0x7c), w(0x77), w(0x7b), w(0xf2), w(0x6b), w(0x6f), w(0xc5),\ | ||
| w(0x30), w(0x01), w(0x67), w(0x2b), w(0xfe), w(0xd7), w(0xab), w(0x76),\ | ||
| w(0xca), w(0x82), w(0xc9), w(0x7d), w(0xfa), w(0x59), w(0x47), w(0xf0),\ | ||
| w(0xad), w(0xd4), w(0xa2), w(0xaf), w(0x9c), w(0xa4), w(0x72), w(0xc0),\ | ||
| w(0xb7), w(0xfd), w(0x93), w(0x26), w(0x36), w(0x3f), w(0xf7), w(0xcc),\ | ||
| w(0x34), w(0xa5), w(0xe5), w(0xf1), w(0x71), w(0xd8), w(0x31), w(0x15),\ | ||
| w(0x04), w(0xc7), w(0x23), w(0xc3), w(0x18), w(0x96), w(0x05), w(0x9a),\ | ||
| w(0x07), w(0x12), w(0x80), w(0xe2), w(0xeb), w(0x27), w(0xb2), w(0x75),\ | ||
| w(0x09), w(0x83), w(0x2c), w(0x1a), w(0x1b), w(0x6e), w(0x5a), w(0xa0),\ | ||
| w(0x52), w(0x3b), w(0xd6), w(0xb3), w(0x29), w(0xe3), w(0x2f), w(0x84),\ | ||
| w(0x53), w(0xd1), w(0x00), w(0xed), w(0x20), w(0xfc), w(0xb1), w(0x5b),\ | ||
| w(0x6a), w(0xcb), w(0xbe), w(0x39), w(0x4a), w(0x4c), w(0x58), w(0xcf),\ | ||
| w(0xd0), w(0xef), w(0xaa), w(0xfb), w(0x43), w(0x4d), w(0x33), w(0x85),\ | ||
| w(0x45), w(0xf9), w(0x02), w(0x7f), w(0x50), w(0x3c), w(0x9f), w(0xa8),\ | ||
| w(0x51), w(0xa3), w(0x40), w(0x8f), w(0x92), w(0x9d), w(0x38), w(0xf5),\ | ||
| w(0xbc), w(0xb6), w(0xda), w(0x21), w(0x10), w(0xff), w(0xf3), w(0xd2),\ | ||
| w(0xcd), w(0x0c), w(0x13), w(0xec), w(0x5f), w(0x97), w(0x44), w(0x17),\ | ||
| w(0xc4), w(0xa7), w(0x7e), w(0x3d), w(0x64), w(0x5d), w(0x19), w(0x73),\ | ||
| w(0x60), w(0x81), w(0x4f), w(0xdc), w(0x22), w(0x2a), w(0x90), w(0x88),\ | ||
| w(0x46), w(0xee), w(0xb8), w(0x14), w(0xde), w(0x5e), w(0x0b), w(0xdb),\ | ||
| w(0xe0), w(0x32), w(0x3a), w(0x0a), w(0x49), w(0x06), w(0x24), w(0x5c),\ | ||
| w(0xc2), w(0xd3), w(0xac), w(0x62), w(0x91), w(0x95), w(0xe4), w(0x79),\ | ||
| w(0xe7), w(0xc8), w(0x37), w(0x6d), w(0x8d), w(0xd5), w(0x4e), w(0xa9),\ | ||
| w(0x6c), w(0x56), w(0xf4), w(0xea), w(0x65), w(0x7a), w(0xae), w(0x08),\ | ||
| w(0xba), w(0x78), w(0x25), w(0x2e), w(0x1c), w(0xa6), w(0xb4), w(0xc6),\ | ||
| w(0xe8), w(0xdd), w(0x74), w(0x1f), w(0x4b), w(0xbd), w(0x8b), w(0x8a),\ | ||
| w(0x70), w(0x3e), w(0xb5), w(0x66), w(0x48), w(0x03), w(0xf6), w(0x0e),\ | ||
| w(0x61), w(0x35), w(0x57), w(0xb9), w(0x86), w(0xc1), w(0x1d), w(0x9e),\ | ||
| w(0xe1), w(0xf8), w(0x98), w(0x11), w(0x69), w(0xd9), w(0x8e), w(0x94),\ | ||
| w(0x9b), w(0x1e), w(0x87), w(0xe9), w(0xce), w(0x55), w(0x28), w(0xdf),\ | ||
| w(0x8c), w(0xa1), w(0x89), w(0x0d), w(0xbf), w(0xe6), w(0x42), w(0x68),\ | ||
| w(0x41), w(0x99), w(0x2d), w(0x0f), w(0xb0), w(0x54), w(0xbb), w(0x16) } | ||
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| #define rc_data(w) {\ | ||
| w(0x01), w(0x02), w(0x04), w(0x08), w(0x10),w(0x20), w(0x40), w(0x80),\ | ||
| w(0x1b), w(0x36) } | ||
|
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| #define bytes2word(b0, b1, b2, b3) (((uint32_t)(b3) << 24) | \ | ||
| ((uint32_t)(b2) << 16) | ((uint32_t)(b1) << 8) | (b0)) | ||
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| #define h0(x) (x) | ||
| #define w0(p) bytes2word(p, 0, 0, 0) | ||
| #define w1(p) bytes2word(0, p, 0, 0) | ||
| #define w2(p) bytes2word(0, 0, p, 0) | ||
| #define w3(p) bytes2word(0, 0, 0, p) | ||
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| #define u0(p) bytes2word(f2(p), p, p, f3(p)) | ||
| #define u1(p) bytes2word(f3(p), f2(p), p, p) | ||
| #define u2(p) bytes2word(p, f3(p), f2(p), p) | ||
| #define u3(p) bytes2word(p, p, f3(p), f2(p)) | ||
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| #define v0(p) bytes2word(fe(p), f9(p), fd(p), fb(p)) | ||
| #define v1(p) bytes2word(fb(p), fe(p), f9(p), fd(p)) | ||
| #define v2(p) bytes2word(fd(p), fb(p), fe(p), f9(p)) | ||
| #define v3(p) bytes2word(f9(p), fd(p), fb(p), fe(p)) | ||
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| #define f2(x) ((x<<1) ^ (((x>>7) & 1) * WPOLY)) | ||
| #define f4(x) ((x<<2) ^ (((x>>6) & 1) * WPOLY) ^ (((x>>6) & 2) * WPOLY)) | ||
| #define f8(x) ((x<<3) ^ (((x>>5) & 1) * WPOLY) ^ (((x>>5) & 2) * WPOLY) ^ (((x>>5) & 4) * WPOLY)) | ||
| #define f3(x) (f2(x) ^ x) | ||
| #define f9(x) (f8(x) ^ x) | ||
| #define fb(x) (f8(x) ^ f2(x) ^ x) | ||
| #define fd(x) (f8(x) ^ f4(x) ^ x) | ||
| #define fe(x) (f8(x) ^ f4(x) ^ f2(x)) | ||
|
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| #define t_dec(m,n) t_##m##n | ||
| #define t_set(m,n) t_##m##n | ||
| #define t_use(m,n) t_##m##n | ||
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| #define d_4(t,n,b,e,f,g,h) ALIGN const t n[4][256] = { b(e), b(f), b(g), b(h) } | ||
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| #define four_tables(x,tab,vf,rf,c) \ | ||
| (tab[0][bval(vf(x,0,c),rf(0,c))] \ | ||
| ^ tab[1][bval(vf(x,1,c),rf(1,c))] \ | ||
| ^ tab[2][bval(vf(x,2,c),rf(2,c))] \ | ||
| ^ tab[3][bval(vf(x,3,c),rf(3,c))]) | ||
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| d_4(uint32_t, t_dec(f,n), sb_data, u0, u1, u2, u3); | ||
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| void aesb_single_round(const uint8_t *in, uint8_t *out, uint8_t *expandedKey) | ||
| { | ||
| uint32_t b0[4], b1[4]; | ||
| const uint32_t *kp = (uint32_t *) expandedKey; | ||
| state_in(b0, in); | ||
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| round(fwd_rnd, b1, b0, kp); | ||
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| state_out(out, b1); | ||
| } | ||
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| void aesb_pseudo_round(const uint8_t *in, uint8_t *out, uint8_t *expandedKey) | ||
| { | ||
| uint32_t b0[4], b1[4]; | ||
| const uint32_t *kp = (uint32_t *) expandedKey; | ||
| state_in(b0, in); | ||
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| round(fwd_rnd, b1, b0, kp); | ||
| round(fwd_rnd, b0, b1, kp + 1 * N_COLS); | ||
| round(fwd_rnd, b1, b0, kp + 2 * N_COLS); | ||
| round(fwd_rnd, b0, b1, kp + 3 * N_COLS); | ||
| round(fwd_rnd, b1, b0, kp + 4 * N_COLS); | ||
| round(fwd_rnd, b0, b1, kp + 5 * N_COLS); | ||
| round(fwd_rnd, b1, b0, kp + 6 * N_COLS); | ||
| round(fwd_rnd, b0, b1, kp + 7 * N_COLS); | ||
| round(fwd_rnd, b1, b0, kp + 8 * N_COLS); | ||
| round(fwd_rnd, b0, b1, kp + 9 * N_COLS); | ||
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| state_out(out, b0); | ||
| } | ||
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| #if defined(__cplusplus) | ||
| } | ||
| #endif |
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