1 /* 2 * QEMU Crypto cipher algorithms 3 * 4 * Copyright (c) 2015 Red Hat, Inc. 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 18 * 19 */ 20 21 #include "crypto/cipher.h" 22 23 static size_t alg_key_len[QCRYPTO_CIPHER_ALG_LAST] = { 24 [QCRYPTO_CIPHER_ALG_AES_128] = 16, 25 [QCRYPTO_CIPHER_ALG_AES_192] = 24, 26 [QCRYPTO_CIPHER_ALG_AES_256] = 32, 27 [QCRYPTO_CIPHER_ALG_DES_RFB] = 8, 28 }; 29 30 static bool 31 qcrypto_cipher_validate_key_length(QCryptoCipherAlgorithm alg, 32 size_t nkey, 33 Error **errp) 34 { 35 if ((unsigned)alg >= QCRYPTO_CIPHER_ALG_LAST) { 36 error_setg(errp, "Cipher algorithm %d out of range", 37 alg); 38 return false; 39 } 40 41 if (alg_key_len[alg] != nkey) { 42 error_setg(errp, "Cipher key length %zu should be %zu", 43 alg_key_len[alg], nkey); 44 return false; 45 } 46 return true; 47 } 48 49 #include "crypto/cipher-builtin.c" 50