/* * QEMU Crypto hash algorithms * * Copyright (c) 2015 Red Hat, Inc. * * 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. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, see <http://www.gnu.org/licenses/>. * */ #include "qemu/osdep.h" #include "qapi/error.h" #include "crypto/hash.h" static size_t qcrypto_hash_alg_size[QCRYPTO_HASH_ALG__MAX] = { [QCRYPTO_HASH_ALG_MD5] = 16, [QCRYPTO_HASH_ALG_SHA1] = 20, [QCRYPTO_HASH_ALG_SHA224] = 28, [QCRYPTO_HASH_ALG_SHA256] = 32, [QCRYPTO_HASH_ALG_SHA384] = 48, [QCRYPTO_HASH_ALG_SHA512] = 64, [QCRYPTO_HASH_ALG_RIPEMD160] = 20, }; size_t qcrypto_hash_digest_len(QCryptoHashAlgorithm alg) { assert(alg < G_N_ELEMENTS(qcrypto_hash_alg_size)); return qcrypto_hash_alg_size[alg]; } int qcrypto_hash_bytes(QCryptoHashAlgorithm alg, const char *buf, size_t len, uint8_t **result, size_t *resultlen, Error **errp) { struct iovec iov = { .iov_base = (char *)buf, .iov_len = len }; return qcrypto_hash_bytesv(alg, &iov, 1, result, resultlen, errp); } static const char hex[] = "0123456789abcdef"; int qcrypto_hash_digestv(QCryptoHashAlgorithm alg, const struct iovec *iov, size_t niov, char **digest, Error **errp) { uint8_t *result = NULL; size_t resultlen = 0; size_t i; if (qcrypto_hash_bytesv(alg, iov, niov, &result, &resultlen, errp) < 0) { return -1; } *digest = g_new0(char, (resultlen * 2) + 1); for (i = 0 ; i < resultlen ; i++) { (*digest)[(i * 2)] = hex[(result[i] >> 4) & 0xf]; (*digest)[(i * 2) + 1] = hex[result[i] & 0xf]; } (*digest)[resultlen * 2] = '\0'; g_free(result); return 0; } int qcrypto_hash_digest(QCryptoHashAlgorithm alg, const char *buf, size_t len, char **digest, Error **errp) { struct iovec iov = { .iov_base = (char *)buf, .iov_len = len }; return qcrypto_hash_digestv(alg, &iov, 1, digest, errp); } int qcrypto_hash_base64v(QCryptoHashAlgorithm alg, const struct iovec *iov, size_t niov, char **base64, Error **errp) { uint8_t *result = NULL; size_t resultlen = 0; if (qcrypto_hash_bytesv(alg, iov, niov, &result, &resultlen, errp) < 0) { return -1; } *base64 = g_base64_encode(result, resultlen); g_free(result); return 0; } int qcrypto_hash_base64(QCryptoHashAlgorithm alg, const char *buf, size_t len, char **base64, Error **errp) { struct iovec iov = { .iov_base = (char *)buf, .iov_len = len }; return qcrypto_hash_base64v(alg, &iov, 1, base64, errp); }