From f097400abcbc45948cb9665eb5abc4f48fc4313a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Manuel=20P=C3=A9gouri=C3=A9-Gonnard?= <mpg@elzevir.fr>
Date: Wed, 28 Jan 2015 16:49:26 +0000
Subject: [PATCH] Fix small bug in base64_encode()

---
 ChangeLog        | 8 ++++++++
 library/base64.c | 3 +++
 2 files changed, 11 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 597d144cd..2ab2cabac 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -25,6 +25,14 @@ Bugfix
    * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
      Peter Vaskovic).
    * Fix assembly selection for MIPS64 (thanks to James Cowgill).
+   * ssl_get_verify_result() now works even if the handshake was aborted due
+     to a failed verification (found by Fredrik Axelsson).
+   * Skip writing and parsing signature_algorithm extension if none of the
+     key exchanges enabled needs certificates. This fixes a possible interop
+     issue with some servers when a zero-length extension was sent. (Reported
+     by Peter Dettman.)
+   * On a 0-length input, base64_encode() did not correctly set output length
+     (found by Hendrik van den Boogaard).
 
 Changes
    * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
diff --git a/library/base64.c b/library/base64.c
index 05b2d8055..139c5cc07 100644
--- a/library/base64.c
+++ b/library/base64.c
@@ -72,7 +72,10 @@ int base64_encode( unsigned char *dst, size_t *dlen,
     unsigned char *p;
 
     if( slen == 0 )
+    {
+        *dlen = 0;
         return( 0 );
+    }
 
     n = (slen << 3) / 6;