From: Pekka Riikonen <priikone@silcnet.org>
Date: Sun, 1 Jan 2006 10:43:02 +0000 (+0000)
Subject: 	Added.
X-Git-Tag: silc.client.1.1.beta1~321
X-Git-Url: http://git.silcnet.org/gitweb/?a=commitdiff_plain;h=1341374e663e9099e25c0d2d78c213c0340ed1b6;p=silc.git

	Added.
---

diff --git a/lib/silccore/silcpubkey.c b/lib/silccore/silcpubkey.c
new file mode 100644
index 00000000..9583f397
--- /dev/null
+++ b/lib/silccore/silcpubkey.c
@@ -0,0 +1,93 @@
+/*
+
+  silcpubkey.c
+
+  Author: Pekka Riikonen <priikone@silcnet.org>
+
+  Copyright (C) 2005 Pekka Riikonen
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; version 2 of the License.
+
+  This program 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 General Public License for more details.
+
+*/
+
+#include "silc.h"
+
+/* Encodes Public Key Payload for transmitting public keys and certificates. */
+
+SilcBuffer silc_public_key_payload_encode(SilcPublicKey public_key)
+{
+  SilcBuffer buffer;
+  unsigned char *pk;
+  SilcUInt32 pk_len;
+  SilcPKCSType type;
+
+  if (!public_key)
+    return NULL;
+
+  type = silc_pkcs_get_type(public_key);
+  pk = silc_pkcs_public_key_encode(public_key, &pk_len);
+  if (!pk)
+    return NULL;
+
+  buffer = silc_buffer_alloc_size(4 + pk_len);
+  if (!buffer) {
+    silc_free(pk);
+    return NULL;
+  }
+
+  if (silc_buffer_format(buffer,
+			 SILC_STR_UI_SHORT(pk_len),
+			 SILC_STR_UI_SHORT(type),
+			 SILC_STR_UI_XNSTRING(pk, pk_len),
+			 SILC_STR_END) < 0) {
+    silc_buffer_free(buffer);
+    silc_free(pk);
+    return NULL;
+  }
+
+  silc_free(pk);
+  return buffer;
+}
+
+/* Decodes public key payload and returns allocated public key */
+
+SilcBool silc_public_key_payload_decode(unsigned char *data,
+					SilcUInt32 data_len,
+					SilcPublicKey *public_key)
+{
+  SilcBufferStruct buf;
+  SilcUInt16 pk_len, pk_type;
+  unsigned char *pk;
+  int ret;
+
+  if (!public_key)
+    return FALSE;
+
+  silc_buffer_set(&buf, data, data_len);
+  ret = silc_buffer_unformat(&buf,
+			     SILC_STR_UI_SHORT(&pk_len),
+			     SILC_STR_UI_SHORT(&pk_type),
+			     SILC_STR_END);
+  if (ret < 0 || pk_len > data_len - 4)
+    return FALSE;
+
+  if (pk_type < SILC_PKCS_SILC || pk_type > SILC_PKCS_SPKI)
+    return FALSE;
+
+  silc_buffer_pull(&buf, 4);
+  ret = silc_buffer_unformat(&buf,
+			     SILC_STR_UI_XNSTRING(&pk, pk_len),
+			     SILC_STR_END);
+  if (ret < 0)
+    return FALSE;
+
+  return silc_pkcs_public_key_alloc((SilcPKCSType)pk_type,
+				    pk, pk_len, public_key);
+}
diff --git a/lib/silccore/silcpubkey.h b/lib/silccore/silcpubkey.h
new file mode 100644
index 00000000..4bf004b9
--- /dev/null
+++ b/lib/silccore/silcpubkey.h
@@ -0,0 +1,67 @@
+/*
+
+  silcpubkey.h
+
+  Author: Pekka Riikonen <priikone@silcnet.org>
+
+  Copyright (C) 2005 Pekka Riikonen
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; version 2 of the License.
+
+  This program 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 General Public License for more details.
+
+*/
+
+/****h* silccore/SILC Public Key Payload
+ *
+ * DESCRIPTION
+ *
+ * Implementation of the Public Key Payload.  Public Key Payload is used to
+ * deliver different types of public keys and certificates in the SILC
+ * protocol.
+ *
+ ***/
+
+#ifndef SILCPUBKEY_H
+#define SILCPUBKEY_H
+
+/****f* silccore/SilcPubKeyAPI/silc_public_key_payload_encode
+ *
+ * SYNOPSIS
+ *
+ *    SilcBool silc_public_key_payload_encode(SilcPublicKey public_key);
+ *
+ * DESCRIPTION
+ *
+ *    Encodes the Public Key Payload from the public key indicated by
+ *    `public_key'.  Returns the allocated and encoded payload buffer,
+ *    or NULL on error.
+ *
+ ***/
+SilcBuffer silc_public_key_payload_encode(SilcPublicKey public_key);
+
+/****f* silccore/SilcPubKeyAPI/silc_public_key_payload_decode
+ *
+ * SYNOPSIS
+ *
+ *    SilcBool silc_public_key_payload_decode(unsigned char *data,
+ *                                            SilcUInt32 data_len,
+ *                                            SilcPublicKey *public_key);
+ *
+ * DESCRIPTION
+ *
+ *    Decodes Public Key Payload from `data' of `data_len' bytes in length
+ *    data buffer into `public_key' pointer.  Returns FALSE if the payload
+ *    cannot be decoded.
+ *
+ ***/
+SilcBool silc_public_key_payload_decode(unsigned char *data,
+					SilcUInt32 data_len,
+					SilcPublicKey *public_key);
+
+#endif /* SILCPUBKEY_H */