ef834aa2b2
QAPI's 'prefix' feature can make the connection between enumeration
type and its constants less than obvious. It's best used with
restraint.
QCryptoHashAlgorithm has a 'prefix' that overrides the generated
enumeration constants' prefix to QCRYPTO_HASH_ALG.
We could simply drop 'prefix', but then the prefix becomes
QCRYPTO_HASH_ALGORITHM, which is rather long.
We could additionally rename the type to QCryptoHashAlg, but I think
the abbreviation "alg" is less than clear.
Rename the type to QCryptoHashAlgo instead. The prefix becomes to
QCRYPTO_HASH_ALGO.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <20240904111836.3273842-12-armbru@redhat.com>
[Conflicts with merge commit 7bbadc60b5 resolved]
101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
/*
|
|
* QEMU Crypto hash algorithms
|
|
*
|
|
* Copyright (c) 2016 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 2.1 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"
|
|
#include "hashpriv.h"
|
|
|
|
|
|
static int qcrypto_hash_alg_map[QCRYPTO_HASH_ALGO__MAX] = {
|
|
[QCRYPTO_HASH_ALGO_MD5] = G_CHECKSUM_MD5,
|
|
[QCRYPTO_HASH_ALGO_SHA1] = G_CHECKSUM_SHA1,
|
|
[QCRYPTO_HASH_ALGO_SHA224] = -1,
|
|
[QCRYPTO_HASH_ALGO_SHA256] = G_CHECKSUM_SHA256,
|
|
[QCRYPTO_HASH_ALGO_SHA384] = G_CHECKSUM_SHA384,
|
|
[QCRYPTO_HASH_ALGO_SHA512] = G_CHECKSUM_SHA512,
|
|
[QCRYPTO_HASH_ALGO_RIPEMD160] = -1,
|
|
};
|
|
|
|
gboolean qcrypto_hash_supports(QCryptoHashAlgo alg)
|
|
{
|
|
if (alg < G_N_ELEMENTS(qcrypto_hash_alg_map) &&
|
|
qcrypto_hash_alg_map[alg] != -1) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
static int
|
|
qcrypto_glib_hash_bytesv(QCryptoHashAlgo alg,
|
|
const struct iovec *iov,
|
|
size_t niov,
|
|
uint8_t **result,
|
|
size_t *resultlen,
|
|
Error **errp)
|
|
{
|
|
int i, ret;
|
|
GChecksum *cs;
|
|
|
|
if (!qcrypto_hash_supports(alg)) {
|
|
error_setg(errp,
|
|
"Unknown hash algorithm %d",
|
|
alg);
|
|
return -1;
|
|
}
|
|
|
|
cs = g_checksum_new(qcrypto_hash_alg_map[alg]);
|
|
|
|
for (i = 0; i < niov; i++) {
|
|
g_checksum_update(cs, iov[i].iov_base, iov[i].iov_len);
|
|
}
|
|
|
|
ret = g_checksum_type_get_length(qcrypto_hash_alg_map[alg]);
|
|
if (ret < 0) {
|
|
error_setg(errp, "%s",
|
|
"Unable to get hash length");
|
|
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;
|
|
}
|
|
|
|
g_checksum_get_digest(cs, *result, resultlen);
|
|
|
|
g_checksum_free(cs);
|
|
return 0;
|
|
|
|
error:
|
|
g_checksum_free(cs);
|
|
return -1;
|
|
}
|
|
|
|
|
|
QCryptoHashDriver qcrypto_hash_lib_driver = {
|
|
.hash_bytesv = qcrypto_glib_hash_bytesv,
|
|
};
|