From: Alejandro Zeise <alejandro.zeise@seagate.com>
Implements the new hashing API in the GLib hash driver.
Supports creating/destroying a context, updating the context
with input data and obtaining an output hash.
Signed-off-by: Alejandro Zeise <alejandro.zeise@seagate.com>
[ clg: - Dropped qcrypto_hash_supports() in qcrypto_glib_hash_new()
- Removed superfluous cast (GChecksum *) in qcrypto_glib_hash_free()
- Reworked qcrypto_glib_hash_finalize() ]
Signed-off-by: Cédric Le Goater <clg@redhat.com>
---
crypto/hash-glib.c | 67 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 67 insertions(+)
diff --git a/crypto/hash-glib.c b/crypto/hash-glib.c
index a5a2949333ae..783283facc18 100644
--- a/crypto/hash-glib.c
+++ b/crypto/hash-glib.c
@@ -1,6 +1,7 @@
/*
* QEMU Crypto hash algorithms
*
+ * Copyright (c) 2024 Seagate Technology LLC and/or its Affiliates
* Copyright (c) 2016 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
@@ -95,6 +96,72 @@ qcrypto_glib_hash_bytesv(QCryptoHashAlgo alg,
}
+static
+QCryptoHash *qcrypto_glib_hash_new(QCryptoHashAlgo alg,
+ Error **errp)
+{
+ QCryptoHash *hash;
+
+ hash = g_new(QCryptoHash, 1);
+ hash->alg = alg;
+ hash->opaque = g_checksum_new(qcrypto_hash_alg_map[alg]);
+
+ return hash;
+}
+
+static
+void qcrypto_glib_hash_free(QCryptoHash *hash)
+{
+ if (hash->opaque) {
+ g_checksum_free(hash->opaque);
+ }
+
+ g_free(hash);
+}
+
+
+static
+int qcrypto_glib_hash_update(QCryptoHash *hash,
+ const struct iovec *iov,
+ size_t niov,
+ Error **errp)
+{
+ GChecksum *ctx = hash->opaque;
+
+ for (int i = 0; i < niov; i++) {
+ g_checksum_update(ctx, iov[i].iov_base, iov[i].iov_len);
+ }
+
+ return 0;
+}
+
+static
+int qcrypto_glib_hash_finalize(QCryptoHash *hash,
+ uint8_t **result,
+ size_t *result_len,
+ Error **errp)
+{
+ int ret;
+ GChecksum *ctx = hash->opaque;
+
+ ret = g_checksum_type_get_length(qcrypto_hash_alg_map[hash->alg]);
+ if (ret < 0) {
+ error_setg(errp, "Unable to get hash length");
+ *result_len = 0;
+ return -1;
+ }
+
+ *result_len = ret;
+ *result = g_new(uint8_t, *result_len);
+
+ g_checksum_get_digest(ctx, *result, result_len);
+ return 0;
+}
+
QCryptoHashDriver qcrypto_hash_lib_driver = {
.hash_bytesv = qcrypto_glib_hash_bytesv,
+ .hash_new = qcrypto_glib_hash_new,
+ .hash_update = qcrypto_glib_hash_update,
+ .hash_finalize = qcrypto_glib_hash_finalize,
+ .hash_free = qcrypto_glib_hash_free,
};
--
2.46.2