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-rw-r--r--g10/armor.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/g10/armor.c b/g10/armor.c
index fb7465595..e4503b8b4 100644
--- a/g10/armor.c
+++ b/g10/armor.c
@@ -274,15 +274,17 @@ is_armored( const byte *buf )
int
use_armor_filter( IOBUF a )
{
- byte buf[1];
+ byte buf[2];
int n;
/* fixme: there might be a problem with iobuf_peek */
- n = iobuf_peek(a, buf, 1 );
+ n = iobuf_peek (a, buf, 2);
if( n == -1 )
return 0; /* EOF, doesn't matter whether armored or not */
if( !n )
return 1; /* can't check it: try armored */
+ if (n != 2)
+ return 0; /* short buffer */
return is_armored(buf);
}