| // SPDX-License-Identifier: BSD-2-Clause |
| /* LibTomCrypt, modular cryptographic library -- Tom St Denis |
| * |
| * LibTomCrypt is a library that provides various cryptographic |
| * algorithms in a highly modular and flexible manner. |
| * |
| * The library is free for all purposes without any express |
| * guarantee it works. |
| */ |
| /** |
| @file noekeon.c |
| Implementation of the Noekeon block cipher by Tom St Denis |
| */ |
| #include "tomcrypt_private.h" |
| |
| #ifdef LTC_NOEKEON |
| |
| const struct ltc_cipher_descriptor noekeon_desc = |
| { |
| "noekeon", |
| 16, |
| 16, 16, 16, 16, |
| &noekeon_setup, |
| &noekeon_ecb_encrypt, |
| &noekeon_ecb_decrypt, |
| &noekeon_test, |
| &noekeon_done, |
| &noekeon_keysize, |
| NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL |
| }; |
| |
| static const ulong32 RC[] = { |
| 0x00000080UL, 0x0000001bUL, 0x00000036UL, 0x0000006cUL, |
| 0x000000d8UL, 0x000000abUL, 0x0000004dUL, 0x0000009aUL, |
| 0x0000002fUL, 0x0000005eUL, 0x000000bcUL, 0x00000063UL, |
| 0x000000c6UL, 0x00000097UL, 0x00000035UL, 0x0000006aUL, |
| 0x000000d4UL |
| }; |
| |
| #define kTHETA(a, b, c, d) \ |
| temp = a^c; temp = temp ^ ROLc(temp, 8) ^ RORc(temp, 8); \ |
| b ^= temp; d ^= temp; \ |
| temp = b^d; temp = temp ^ ROLc(temp, 8) ^ RORc(temp, 8); \ |
| a ^= temp; c ^= temp; |
| |
| #define THETA(k, a, b, c, d) \ |
| temp = a^c; temp = temp ^ ROLc(temp, 8) ^ RORc(temp, 8); \ |
| b ^= temp ^ k[1]; d ^= temp ^ k[3]; \ |
| temp = b^d; temp = temp ^ ROLc(temp, 8) ^ RORc(temp, 8); \ |
| a ^= temp ^ k[0]; c ^= temp ^ k[2]; |
| |
| #define GAMMA(a, b, c, d) \ |
| b ^= ~(d|c); \ |
| a ^= c&b; \ |
| temp = d; d = a; a = temp;\ |
| c ^= a ^ b ^ d; \ |
| b ^= ~(d|c); \ |
| a ^= c&b; |
| |
| #define PI1(a, b, c, d) \ |
| b = ROLc(b, 1); c = ROLc(c, 5); d = ROLc(d, 2); |
| |
| #define PI2(a, b, c, d) \ |
| b = RORc(b, 1); c = RORc(c, 5); d = RORc(d, 2); |
| |
| /** |
| Initialize the Noekeon block cipher |
| @param key The symmetric key you wish to pass |
| @param keylen The key length in bytes |
| @param num_rounds The number of rounds desired (0 for default) |
| @param skey The key in as scheduled by this function. |
| @return CRYPT_OK if successful |
| */ |
| int noekeon_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey) |
| { |
| ulong32 temp; |
| |
| LTC_ARGCHK(key != NULL); |
| LTC_ARGCHK(skey != NULL); |
| |
| if (keylen != 16) { |
| return CRYPT_INVALID_KEYSIZE; |
| } |
| |
| if (num_rounds != 16 && num_rounds != 0) { |
| return CRYPT_INVALID_ROUNDS; |
| } |
| |
| LOAD32H(skey->noekeon.K[0],&key[0]); |
| LOAD32H(skey->noekeon.K[1],&key[4]); |
| LOAD32H(skey->noekeon.K[2],&key[8]); |
| LOAD32H(skey->noekeon.K[3],&key[12]); |
| |
| LOAD32H(skey->noekeon.dK[0],&key[0]); |
| LOAD32H(skey->noekeon.dK[1],&key[4]); |
| LOAD32H(skey->noekeon.dK[2],&key[8]); |
| LOAD32H(skey->noekeon.dK[3],&key[12]); |
| |
| kTHETA(skey->noekeon.dK[0], skey->noekeon.dK[1], skey->noekeon.dK[2], skey->noekeon.dK[3]); |
| |
| return CRYPT_OK; |
| } |
| |
| /** |
| Encrypts a block of text with Noekeon |
| @param pt The input plaintext (16 bytes) |
| @param ct The output ciphertext (16 bytes) |
| @param skey The key as scheduled |
| @return CRYPT_OK if successful |
| */ |
| #ifdef LTC_CLEAN_STACK |
| static int _noekeon_ecb_encrypt(const unsigned char *pt, unsigned char *ct, const symmetric_key *skey) |
| #else |
| int noekeon_ecb_encrypt(const unsigned char *pt, unsigned char *ct, const symmetric_key *skey) |
| #endif |
| { |
| ulong32 a,b,c,d,temp; |
| int r; |
| |
| LTC_ARGCHK(skey != NULL); |
| LTC_ARGCHK(pt != NULL); |
| LTC_ARGCHK(ct != NULL); |
| |
| LOAD32H(a,&pt[0]); LOAD32H(b,&pt[4]); |
| LOAD32H(c,&pt[8]); LOAD32H(d,&pt[12]); |
| |
| #define ROUND(i) \ |
| a ^= RC[i]; \ |
| THETA(skey->noekeon.K, a,b,c,d); \ |
| PI1(a,b,c,d); \ |
| GAMMA(a,b,c,d); \ |
| PI2(a,b,c,d); |
| |
| for (r = 0; r < 16; ++r) { |
| ROUND(r); |
| } |
| |
| #undef ROUND |
| |
| a ^= RC[16]; |
| THETA(skey->noekeon.K, a, b, c, d); |
| |
| STORE32H(a,&ct[0]); STORE32H(b,&ct[4]); |
| STORE32H(c,&ct[8]); STORE32H(d,&ct[12]); |
| |
| return CRYPT_OK; |
| } |
| |
| #ifdef LTC_CLEAN_STACK |
| int noekeon_ecb_encrypt(const unsigned char *pt, unsigned char *ct, const symmetric_key *skey) |
| { |
| int err = _noekeon_ecb_encrypt(pt, ct, skey); |
| burn_stack(sizeof(ulong32) * 5 + sizeof(int)); |
| return err; |
| } |
| #endif |
| |
| /** |
| Decrypts a block of text with Noekeon |
| @param ct The input ciphertext (16 bytes) |
| @param pt The output plaintext (16 bytes) |
| @param skey The key as scheduled |
| @return CRYPT_OK if successful |
| */ |
| #ifdef LTC_CLEAN_STACK |
| static int _noekeon_ecb_decrypt(const unsigned char *ct, unsigned char *pt, const symmetric_key *skey) |
| #else |
| int noekeon_ecb_decrypt(const unsigned char *ct, unsigned char *pt, const symmetric_key *skey) |
| #endif |
| { |
| ulong32 a,b,c,d, temp; |
| int r; |
| |
| LTC_ARGCHK(skey != NULL); |
| LTC_ARGCHK(pt != NULL); |
| LTC_ARGCHK(ct != NULL); |
| |
| LOAD32H(a,&ct[0]); LOAD32H(b,&ct[4]); |
| LOAD32H(c,&ct[8]); LOAD32H(d,&ct[12]); |
| |
| |
| #define ROUND(i) \ |
| THETA(skey->noekeon.dK, a,b,c,d); \ |
| a ^= RC[i]; \ |
| PI1(a,b,c,d); \ |
| GAMMA(a,b,c,d); \ |
| PI2(a,b,c,d); |
| |
| for (r = 16; r > 0; --r) { |
| ROUND(r); |
| } |
| |
| #undef ROUND |
| |
| THETA(skey->noekeon.dK, a,b,c,d); |
| a ^= RC[0]; |
| STORE32H(a,&pt[0]); STORE32H(b, &pt[4]); |
| STORE32H(c,&pt[8]); STORE32H(d, &pt[12]); |
| return CRYPT_OK; |
| } |
| |
| #ifdef LTC_CLEAN_STACK |
| int noekeon_ecb_decrypt(const unsigned char *ct, unsigned char *pt, const symmetric_key *skey) |
| { |
| int err = _noekeon_ecb_decrypt(ct, pt, skey); |
| burn_stack(sizeof(ulong32) * 5 + sizeof(int)); |
| return err; |
| } |
| #endif |
| |
| /** |
| Performs a self-test of the Noekeon block cipher |
| @return CRYPT_OK if functional, CRYPT_NOP if self-test has been disabled |
| */ |
| int noekeon_test(void) |
| { |
| #ifndef LTC_TEST |
| return CRYPT_NOP; |
| #else |
| static const struct { |
| int keylen; |
| unsigned char key[16], pt[16], ct[16]; |
| } tests[] = { |
| { |
| 16, |
| { 0xAA, 0x3C, 0x8C, 0x86, 0xD9, 0x8B, 0xF8, 0xBE, 0x21, 0xE0, 0x36, 0x09, 0x78, 0xFB, 0xE4, 0x90 }, |
| { 0xE4, 0x96, 0x6C, 0xD3, 0x13, 0xA0, 0x6C, 0xAF, 0xD0, 0x23, 0xC9, 0xFD, 0x45, 0x32, 0x23, 0x16 }, |
| { 0xA6, 0xEC, 0xB8, 0xA8, 0x61, 0xFD, 0x62, 0xD9, 0x13, 0x02, 0xFE, 0x9E, 0x47, 0x01, 0x3F, 0xC3 } |
| }, |
| { |
| 16, |
| { 0xED, 0x43, 0xD1, 0x87, 0x21, 0x7E, 0xE0, 0x97, 0x3D, 0x76, 0xC3, 0x37, 0x2E, 0x7D, 0xAE, 0xD3 }, |
| { 0xE3, 0x38, 0x32, 0xCC, 0xF2, 0x2F, 0x2F, 0x0A, 0x4A, 0x8B, 0x8F, 0x18, 0x12, 0x20, 0x17, 0xD3 }, |
| { 0x94, 0xA5, 0xDF, 0xF5, 0xAE, 0x1C, 0xBB, 0x22, 0xAD, 0xEB, 0xA7, 0x0D, 0xB7, 0x82, 0x90, 0xA0 } |
| }, |
| { |
| 16, |
| { 0x6F, 0xDC, 0x23, 0x38, 0xF2, 0x10, 0xFB, 0xD3, 0xC1, 0x8C, 0x02, 0xF6, 0xB4, 0x6A, 0xD5, 0xA8 }, |
| { 0xDB, 0x29, 0xED, 0xB5, 0x5F, 0xB3, 0x60, 0x3A, 0x92, 0xA8, 0xEB, 0x9C, 0x6D, 0x9D, 0x3E, 0x8F }, |
| { 0x78, 0xF3, 0x6F, 0xF8, 0x9E, 0xBB, 0x8C, 0x6A, 0xE8, 0x10, 0xF7, 0x00, 0x22, 0x15, 0x30, 0x3D } |
| }, |
| { |
| 16, |
| { 0x2C, 0x0C, 0x02, 0xEF, 0x6B, 0xC4, 0xF2, 0x0B, 0x2E, 0xB9, 0xE0, 0xBF, 0xD9, 0x36, 0xC2, 0x4E }, |
| { 0x84, 0xE2, 0xFE, 0x64, 0xB1, 0xB9, 0xFE, 0x76, 0xA8, 0x3F, 0x45, 0xC7, 0x40, 0x7A, 0xAF, 0xEE }, |
| { 0x2A, 0x08, 0xD6, 0xA2, 0x1C, 0x63, 0x08, 0xB0, 0xF8, 0xBC, 0xB3, 0xA1, 0x66, 0xF7, 0xAE, 0xCF } |
| }, |
| { |
| 16, |
| { 0x6F, 0x30, 0xF8, 0x9F, 0xDA, 0x6E, 0xA0, 0x91, 0x04, 0x0F, 0x6C, 0x8B, 0x7D, 0xF7, 0x2A, 0x4B }, |
| { 0x65, 0xB6, 0xA6, 0xD0, 0x42, 0x14, 0x08, 0x60, 0x34, 0x8D, 0x37, 0x2F, 0x01, 0xF0, 0x46, 0xBE }, |
| { 0x66, 0xAC, 0x0B, 0x62, 0x1D, 0x68, 0x11, 0xF5, 0x27, 0xB1, 0x13, 0x5D, 0xF3, 0x2A, 0xE9, 0x18 } |
| }, |
| { |
| 16, |
| { 0xCA, 0xA4, 0x16, 0xB7, 0x1C, 0x92, 0x2E, 0xAD, 0xEB, 0xA7, 0xDB, 0x69, 0x92, 0xCB, 0x35, 0xEF }, |
| { 0x81, 0x6F, 0x8E, 0x4D, 0x96, 0xC6, 0xB3, 0x67, 0x83, 0xF5, 0x63, 0xC7, 0x20, 0x6D, 0x40, 0x23 }, |
| { 0x44, 0xF7, 0x63, 0x62, 0xF0, 0x43, 0xBB, 0x67, 0x4A, 0x75, 0x12, 0x42, 0x46, 0x29, 0x28, 0x19 } |
| }, |
| { |
| 16, |
| { 0x6B, 0xCF, 0x22, 0x2F, 0xE0, 0x1B, 0xB0, 0xAA, 0xD8, 0x3C, 0x91, 0x99, 0x18, 0xB2, 0x28, 0xE8 }, |
| { 0x7C, 0x37, 0xC7, 0xD0, 0xAC, 0x92, 0x29, 0xF1, 0x60, 0x82, 0x93, 0x89, 0xAA, 0x61, 0xAA, 0xA9 }, |
| { 0xE5, 0x89, 0x1B, 0xB3, 0xFE, 0x8B, 0x0C, 0xA1, 0xA6, 0xC7, 0xBE, 0x12, 0x73, 0x0F, 0xC1, 0x19 } |
| }, |
| { |
| 16, |
| { 0xE6, 0xD0, 0xF1, 0x03, 0x2E, 0xDE, 0x70, 0x8D, 0xD8, 0x9E, 0x36, 0x5C, 0x05, 0x52, 0xE7, 0x0D }, |
| { 0xE2, 0x42, 0xE7, 0x92, 0x0E, 0xF7, 0x82, 0xA2, 0xB8, 0x21, 0x8D, 0x26, 0xBA, 0x2D, 0xE6, 0x32 }, |
| { 0x1E, 0xDD, 0x75, 0x22, 0xB9, 0x36, 0x8A, 0x0F, 0x32, 0xFD, 0xD4, 0x48, 0x65, 0x12, 0x5A, 0x2F } |
| } |
| }; |
| symmetric_key key; |
| unsigned char tmp[2][16]; |
| int err, i, y; |
| |
| for (i = 0; i < (int)(sizeof(tests)/sizeof(tests[0])); i++) { |
| zeromem(&key, sizeof(key)); |
| if ((err = noekeon_setup(tests[i].key, tests[i].keylen, 0, &key)) != CRYPT_OK) { |
| return err; |
| } |
| |
| noekeon_ecb_encrypt(tests[i].pt, tmp[0], &key); |
| noekeon_ecb_decrypt(tmp[0], tmp[1], &key); |
| if (compare_testvector(tmp[0], 16, tests[i].ct, 16, "Noekeon Encrypt", i) || |
| compare_testvector(tmp[1], 16, tests[i].pt, 16, "Noekeon Decrypt", i)) { |
| return CRYPT_FAIL_TESTVECTOR; |
| } |
| |
| /* now see if we can encrypt all zero bytes 1000 times, decrypt and come back where we started */ |
| for (y = 0; y < 16; y++) tmp[0][y] = 0; |
| for (y = 0; y < 1000; y++) noekeon_ecb_encrypt(tmp[0], tmp[0], &key); |
| for (y = 0; y < 1000; y++) noekeon_ecb_decrypt(tmp[0], tmp[0], &key); |
| for (y = 0; y < 16; y++) if (tmp[0][y] != 0) return CRYPT_FAIL_TESTVECTOR; |
| } |
| return CRYPT_OK; |
| #endif |
| } |
| |
| /** Terminate the context |
| @param skey The scheduled key |
| */ |
| void noekeon_done(symmetric_key *skey) |
| { |
| LTC_UNUSED_PARAM(skey); |
| } |
| |
| /** |
| Gets suitable key size |
| @param keysize [in/out] The length of the recommended key (in bytes). This function will store the suitable size back in this variable. |
| @return CRYPT_OK if the input key size is acceptable. |
| */ |
| int noekeon_keysize(int *keysize) |
| { |
| LTC_ARGCHK(keysize != NULL); |
| if (*keysize < 16) { |
| return CRYPT_INVALID_KEYSIZE; |
| } |
| *keysize = 16; |
| return CRYPT_OK; |
| } |
| |
| #endif |
| |
| |
| /* ref: $Format:%D$ */ |
| /* git commit: $Format:%H$ */ |
| /* commit time: $Format:%ai$ */ |