sshkey: Add support to parse SSH public keys from files with left|rightsigkey

src/libstrongswan/plugins/sshkey/sshkey_builder.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2013 Tobias Brunner
+ * Copyright (C) 2013-2014 Tobias Brunner
  * Hochschule fuer Technik Rapperswil
  *
  * This program is free software; you can redistribute it and/or modify it
@@ -48,4 +48,15 @@ struct sshkey_public_key_t {
  */
 sshkey_public_key_t *sshkey_public_key_load(key_type_t type, va_list args);
 
+/**
+ * Load a public key in RFC 4253 format as certificate.
+ *
+ * Takes a BUILD_FROM_FILE and BUILD_SUBJECT argument.
+ *
+ * @param type		type of the certificate, must be CERT_TRUSTED_PUBKEY
+ * @param args		builder_part_t argument list
+ * @return			built certificate, NULL on failure
+ */
+certificate_t *sshkey_certificate_load(certificate_type_t type, va_list args);
+
 #endif /** SSHKEY_BUILDER_H_ @}*/