diff options
Diffstat (limited to 'qemu/crypto/hash.c')
| -rw-r--r-- | qemu/crypto/hash.c | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/qemu/crypto/hash.c b/qemu/crypto/hash.c deleted file mode 100644 index b90af3495..000000000 --- a/qemu/crypto/hash.c +++ /dev/null @@ -1,221 +0,0 @@ -/* - * 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" - -#ifdef CONFIG_GNUTLS_HASH -#include <gnutls/gnutls.h> -#include <gnutls/crypto.h> -#endif - - -static size_t qcrypto_hash_alg_size[QCRYPTO_HASH_ALG__MAX] = { - [QCRYPTO_HASH_ALG_MD5] = 16, - [QCRYPTO_HASH_ALG_SHA1] = 20, - [QCRYPTO_HASH_ALG_SHA256] = 32, -}; - -size_t qcrypto_hash_digest_len(QCryptoHashAlgorithm alg) -{ - if (alg >= G_N_ELEMENTS(qcrypto_hash_alg_size)) { - return 0; - } - return qcrypto_hash_alg_size[alg]; -} - - -#ifdef CONFIG_GNUTLS_HASH -static int qcrypto_hash_alg_map[QCRYPTO_HASH_ALG__MAX] = { - [QCRYPTO_HASH_ALG_MD5] = GNUTLS_DIG_MD5, - [QCRYPTO_HASH_ALG_SHA1] = GNUTLS_DIG_SHA1, - [QCRYPTO_HASH_ALG_SHA256] = GNUTLS_DIG_SHA256, -}; - -gboolean qcrypto_hash_supports(QCryptoHashAlgorithm alg) -{ - if (alg < G_N_ELEMENTS(qcrypto_hash_alg_map)) { - return true; - } - return false; -} - - -int qcrypto_hash_bytesv(QCryptoHashAlgorithm alg, - const struct iovec *iov, - size_t niov, - uint8_t **result, - size_t *resultlen, - Error **errp) -{ - int i, ret; - gnutls_hash_hd_t dig; - - if (alg >= G_N_ELEMENTS(qcrypto_hash_alg_map)) { - error_setg(errp, - "Unknown hash algorithm %d", - alg); - return -1; - } - - ret = gnutls_hash_init(&dig, qcrypto_hash_alg_map[alg]); - - if (ret < 0) { - error_setg(errp, - "Unable to initialize hash algorithm: %s", - gnutls_strerror(ret)); - return -1; - } - - for (i = 0; i < niov; i++) { - ret = gnutls_hash(dig, iov[i].iov_base, iov[i].iov_len); - if (ret < 0) { - error_setg(errp, - "Unable process hash data: %s", - gnutls_strerror(ret)); - goto error; - } - } - - ret = gnutls_hash_get_len(qcrypto_hash_alg_map[alg]); - if (ret <= 0) { - error_setg(errp, - "Unable to get hash length: %s", - gnutls_strerror(ret)); - goto error; - } - if (*resultlen == 0) { - *resultlen = ret; - *result = g_new0(uint8_t, *resultlen); - } else if (*resultlen != ret) { - error_setg(errp, - "Result buffer size %zu is smaller than hash %d", - *resultlen, ret); - goto error; - } - - gnutls_hash_deinit(dig, *result); - return 0; - - error: - gnutls_hash_deinit(dig, NULL); - return -1; -} - -#else /* ! CONFIG_GNUTLS_HASH */ - -gboolean qcrypto_hash_supports(QCryptoHashAlgorithm alg G_GNUC_UNUSED) -{ - return false; -} - -int qcrypto_hash_bytesv(QCryptoHashAlgorithm alg, - const struct iovec *iov G_GNUC_UNUSED, - size_t niov G_GNUC_UNUSED, - uint8_t **result G_GNUC_UNUSED, - size_t *resultlen G_GNUC_UNUSED, - Error **errp) -{ - error_setg(errp, - "Hash algorithm %d not supported without GNUTLS", - alg); - return -1; -} - -#endif /* ! CONFIG_GNUTLS_HASH */ - -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); -} |