1 files changed, 66 insertions, 0 deletions
diff --git a/qemu/crypto/pbkdf-nettle.c b/qemu/crypto/pbkdf-nettle.c
new file mode 100644
index 000000000..db9fc1578
--- /dev/null
+++ b/qemu/crypto/pbkdf-nettle.c
@@ -0,0 +1,66 @@
+/*
+ * QEMU Crypto PBKDF support (Password-Based Key Derivation Function)
+ *
+ * Copyright (c) 2015-2016 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 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/pbkdf.h"
+#include "nettle/pbkdf2.h"
+
+
+bool qcrypto_pbkdf2_supports(QCryptoHashAlgorithm hash)
+{
+    switch (hash) {
+    case QCRYPTO_HASH_ALG_SHA1:
+    case QCRYPTO_HASH_ALG_SHA256:
+        return true;
+    default:
+        return false;
+    }
+}
+
+int qcrypto_pbkdf2(QCryptoHashAlgorithm hash,
+                   const uint8_t *key, size_t nkey,
+                   const uint8_t *salt, size_t nsalt,
+                   unsigned int iterations,
+                   uint8_t *out, size_t nout,
+                   Error **errp)
+{
+    switch (hash) {
+    case QCRYPTO_HASH_ALG_SHA1:
+        pbkdf2_hmac_sha1(nkey, key,
+                         iterations,
+                         nsalt, salt,
+                         nout, out);
+        break;
+
+    case QCRYPTO_HASH_ALG_SHA256:
+        pbkdf2_hmac_sha256(nkey, key,
+                           iterations,
+                           nsalt, salt,
+                           nout, out);
+        break;
+
+    default:
+        error_setg_errno(errp, ENOSYS,
+                         "PBKDF does not support hash algorithm %d", hash);
+        return -1;
+    }
+    return 0;
+}