1 files changed, 53 insertions, 0 deletions
diff --git a/src/lib/crypto/openssl/pbkdf2.c b/src/lib/crypto/openssl/pbkdf2.c
new file mode 100644
index 000000000000..00c2116fc136
--- /dev/null
+++ b/src/lib/crypto/openssl/pbkdf2.c
@@ -0,0 +1,53 @@
+/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/* lib/crypto/openssl/pbkdf2.c */
+/*
+ * Copyright 2002, 2008, 2009 by the Massachusetts Institute of Technology.
+ * All Rights Reserved.
+ *
+ * Export of this software from the United States of America may
+ *   require a specific license from the United States Government.
+ *   It is the responsibility of any person or organization contemplating
+ *   export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission.  Furthermore if you modify this software you must label
+ * your software as modified software and not distribute it in such a
+ * fashion that it might be confused with the original M.I.T. software.
+ * M.I.T. makes no representations about the suitability of
+ * this software for any purpose.  It is provided "as is" without express
+ * or implied warranty.
+ */
+
+#include "crypto_int.h"
+#include <openssl/x509.h>
+#include <openssl/evp.h>
+#include <openssl/hmac.h>
+
+krb5_error_code
+krb5int_pbkdf2_hmac(const struct krb5_hash_provider *hash,
+                    const krb5_data *out, unsigned long count,
+                    const krb5_data *pass, const krb5_data *salt)
+{
+    const EVP_MD *md = NULL;
+
+    /* Get the message digest handle corresponding to the hash. */
+    if (hash == &krb5int_hash_sha1)
+        md = EVP_sha1();
+    else if (hash == &krb5int_hash_sha256)
+        md = EVP_sha256();
+    else if (hash == &krb5int_hash_sha384)
+        md = EVP_sha384();
+    if (md == NULL)
+        return KRB5_CRYPTO_INTERNAL;
+
+    PKCS5_PBKDF2_HMAC(pass->data, pass->length, (unsigned char *)salt->data,
+                      salt->length, count, md, out->length,
+                      (unsigned char *)out->data);
+    return 0;
+}