commit c99a43cfb0b65eb6c96fa34b58f6f7c9d7986107
author Adam Langley <agl@google.com> Mon May 16 08:34:09 2016 +0000
committer android-build-merger <android-build-merger@google.com> Mon May 16 08:34:09 2016 +0000
tree b69b74c4fb107ea4323318f091a3f6bc94f40e96
parent 67e4b08877196aaed1026660507da51729121522
parent c79be54ba3206605350204e419e4078906456da6

Fix encoding bug in i2c_ASN1_INTEGER
am: c79be54ba3

* commit 'c79be54ba3206605350204e419e4078906456da6':
  Fix encoding bug in i2c_ASN1_INTEGER

Change-Id: I9a5d0ad1bca0a396a44939a4aea60bf83acdce32

src/crypto/asn1/a_int.c

diff --git a/src/crypto/asn1/a_int.c b/src/crypto/asn1/a_int.c
index 9a56534..46855d9 100644
--- a/src/crypto/asn1/a_int.c
+++ b/src/crypto/asn1/a_int.c
@@ -125,6 +125,8 @@
 		{
 		ret=a->length;
 		i=a->data[0];
+		if (ret == 1 && i == 0)
+			neg=0;
 		if (!neg && (i > 127)) {
 			pad=1;
 			pb=0;
@@ -158,7 +160,7 @@
 		p += a->length - 1;
 		i = a->length;
 		/* Copy zeros to destination as long as source is zero */
-		while(!*n) {
+		while(!*n && i > 1) {
 			*(p--) = 0;
 			n--;
 			i--;