Ticket #396: initial implementation of digest AKA (akav1-md5) authentication for IMS/3GPP

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@1488 74dad513-b988-da41-8d7b-12977e46ad98

1 files changed, 91 insertions, 0 deletions

diff --git a/pjlib-util/include/pjlib-util/base64.h b/pjlib-util/include/pjlib-util/base64.h
new file mode 100644
index 00000000..b01f918b
--- /dev/null
+++ b/pjlib-util/include/pjlib-util/base64.h
@@ -0,0 +1,91 @@
+/* $Id$ */
+/* 
+ * Copyright (C) 2003-2007 Benny Prijono <benny@prijono.org>
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
+ */
+#ifndef __PJLIB_UTIL_BASE64_H__
+#define __PJLIB_UTIL_BASE64_H__
+
+/**
+ * @file base64.h
+ * @brief Base64 encoding and decoding
+ */
+
+#include <pjlib-util/types.h>
+
+PJ_BEGIN_DECL
+
+/**
+ * @defgroup PJLIB_UTIL_BASE64 Base64 Encoding/Decoding
+ * @ingroup PJLIB_UTIL_ENCRYPTION
+ * @{
+ * This module implements base64 encoding and decoding.
+ */
+
+/**
+ * Helper macro to calculate the approximate length required for base256 to
+ * base64 conversion.
+ */
+#define PJ_BASE256_TO_BASE64_LEN(len)	(len * 4 / 3 + 3)
+
+/**
+ * Helper macro to calculate the approximage length required for base64 to
+ * base256 conversion.
+ */
+#define PJ_BASE64_TO_BASE256_LEN(len)	(len * 3 / 4)
+
+
+/**
+ * Encode a buffer into base64 encoding.
+ *
+ * @param input	    The input buffer.
+ * @param in_len    Size of the input buffer.
+ * @param output    Output buffer. Caller must allocate this buffer with
+ *		    the appropriate size.
+ * @param out_len   On entry, it specifies the length of the output buffer. 
+ *		    Upon return, this will be filled with the actual
+ *		    length of the output buffer.
+ *
+ * @return	    PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pj_base64_encode(const pj_uint8_t *input, int in_len,
+				     char *output, int *out_len);
+
+
+/**
+ * Decode base64 string.
+ *
+ * @param input	    Input string.
+ * @param out	    Buffer to store the output. Caller must allocate
+ *		    this buffer with the appropriate size.
+ * @param out_len   On entry, it specifies the length of the output buffer. 
+ *		    Upon return, this will be filled with the actual
+ *		    length of the output.
+ */
+PJ_DECL(pj_status_t) pj_base64_decode(const pj_str_t *input, 
+				      pj_uint8_t *out, long *out_len);
+
+
+
+/**
+ * @}
+ */
+
+PJ_END_DECL
+
+
+#endif	/* __PJLIB_UTIL_BASE64_H__ */
+