1 files changed, 73 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/krb5/generate_subkey.c b/third_party/heimdal/lib/krb5/generate_subkey.c
new file mode 100644
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--- /dev/null
+++ b/third_party/heimdal/lib/krb5/generate_subkey.c
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+/*
+ * Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "krb5_locl.h"
+
+/**
+ * Generate subkey, from keyblock
+ *
+ * @param context kerberos context
+ * @param key session key
+ * @param etype encryption type of subkey, if ETYPE_NULL, use key's enctype
+ * @param subkey returned new, free with krb5_free_keyblock().
+ *
+ * @return 0 on success or a Kerberos 5 error code
+ *
+* @ingroup krb5_crypto
+ */
+
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+krb5_generate_subkey_extended(krb5_context context,
+			      const krb5_keyblock *key,
+			      krb5_enctype etype,
+			      krb5_keyblock **subkey)
+{
+    krb5_error_code ret;
+
+    ALLOC(*subkey, 1);
+    if (*subkey == NULL)
+	return krb5_enomem(context);
+
+    if (etype == ETYPE_NULL)
+	etype = key->keytype; /* use session key etype */
+
+    /* XXX should we use the session key as input to the RF? */
+    ret = krb5_generate_random_keyblock(context, etype, *subkey);
+    if (ret != 0) {
+	free(*subkey);
+	*subkey = NULL;
+    }
+
+    return ret;
+}
+