Implements the new hashing API in the gnutls hash driver.
Supports creating/destroying a context, updating the context
with input data and obtaining an output hash.
Signed-off-by: Alejandro Zeise <alejandro.ze...@seagate.com>
---
crypto/hash-gnutls.c | 76 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 76 insertions(+)
diff --git a/crypto/hash-gnutls.c b/crypto/hash-gnutls.c
index 84ce7073f5..a2ccd257c7 100644
--- a/crypto/hash-gnutls.c
+++ b/crypto/hash-gnutls.c
@@ -53,8 +53,81 @@ gboolean qcrypto_hash_supports(QCryptoHashAlgorithm alg)
return false;
}
+static
+QCryptoHash *qcrypto_gnutls_hash_new(QCryptoHashAlgorithm alg, Error **errp)
+{
+ QCryptoHash *hash = NULL;
+
+ if (!qcrypto_hash_supports(alg)) {
+ error_setg(errp,
+ "Unknown hash algorithm %d",
+ alg);
+ } else {
+ hash = g_new(QCryptoHash, 1);
+ hash->alg = alg;
+ hash->opaque = g_new(gnutls_hash_hd_t, 1);
+
+ gnutls_hash_init(hash->opaque, qcrypto_hash_alg_map[alg]);
+ }
+
+ return hash;
+}
+
+static
+int qcrypto_gnutls_hash_free(QCryptoHash *hash)
+{
+ gnutls_hash_hd_t *ctx = hash->opaque;
+
+ g_free(ctx);
+ g_free(hash);
+
+ return 0;
+}
+static
+int qcrypto_gnutls_hash_update(QCryptoHash *hash,
+ const struct iovec *iov,
+ size_t niov,
+ Error **errp)
+{
+ int fail = 0;
+ gnutls_hash_hd_t *ctx = hash->opaque;
+
+ for (int i = 0; i < niov; i++) {
+ fail = gnutls_hash(*ctx, iov[i].iov_base, iov[i].iov_len) || fail;
+ }
+
+ return fail;
+}
+
+static
+int qcrypto_gnutls_hash_finalize(QCryptoHash *hash,
+ uint8_t **result,
+ size_t *result_len,
+ Error **errp)
+{
+ int ret = 0;
+ gnutls_hash_hd_t *ctx = hash->opaque;
+
+ *result_len = gnutls_hash_get_len(qcrypto_hash_alg_map[hash->alg]);
+ if (*result_len == 0) {
+ error_setg(errp, "%s",
+ "Unable to get hash length");
+ ret = -1;
+ } else {
+ *result = g_new(uint8_t, *result_len);
+
+ gnutls_hash_deinit(*ctx, *result);
+ }
+
+ return ret;
+}
+
QCryptoHashDriver qcrypto_hash_lib_driver = {
+ .hash_new = qcrypto_gnutls_hash_new,
+ .hash_free = qcrypto_gnutls_hash_free,
+ .hash_update = qcrypto_gnutls_hash_update,
+ .hash_finalize = qcrypto_gnutls_hash_finalize
};
--
2.34.1
