commit fff80f8879dbbafc8e0ee7c007f85bf90d8dc3de
author Manuel Pégourié-Gonnard <mpg@elzevir.fr> Sat Aug 17 15:20:06 2013 +0200
committer Manuel Pégourié-Gonnard <mpg@elzevir.fr> Tue Aug 20 20:46:05 2013 +0200
tree 492a9a63f6fa4d92a364ebfd9d4d189f1e836eaa
parent f73da02962b2ca1e75c3355cd3c1eebc0943b8d6

PK: use NULL for unimplemented operations

library/pk.c

diff --git a/library/pk.c b/library/pk.c
index 62302b0..3711794 100644
--- a/library/pk.c
+++ b/library/pk.c
@@ -127,6 +127,9 @@
     if( ctx == NULL || ctx->pk_info == NULL )
         return( POLARSSL_ERR_PK_BAD_INPUT_DATA );
 
+    if( ctx->pk_info->verify_func == NULL )
+        return( POLARSSL_ERR_PK_TYPE_MISMATCH );
+
     return( ctx->pk_info->verify_func( ctx->pk_ctx, md_alg,
                                        hash, hash_len,
                                        sig, sig_len ) );