commit 1b54a05f77559bca84093edf48c8ccdf65c46d44
author Werner Lewis <Werner.Lewis@arm.com> Tue May 10 12:23:13 2022 +0100
committer Werner Lewis <Werner.Lewis@arm.com> Wed Jun 01 16:28:10 2022 +0100
tree 1fd643988f060c5df0588740c515856b136ae02d
parent a0026604a26459a5f63e8499d75c0006a4701bcb

Use ASN1 UTC tags for dates before 2000

Signed-off-by: Werner Lewis <werner.lewis@arm.com>

library/x509write_crt.c

diff --git a/library/x509write_crt.c b/library/x509write_crt.c
index 184c90c..0c5e991 100644
--- a/library/x509write_crt.c
+++ b/library/x509write_crt.c
@@ -299,7 +299,7 @@
     /*
      * write MBEDTLS_ASN1_UTC_TIME if year < 2050 (2 bytes shorter)
      */
-    if( t[0] == '2' && t[1] == '0' && t[2] < '5' )
+    if( t[0] < '2' || ( t[0] == '2' && t[1] == '0' && t[2] < '5' ) )
     {
         MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_raw_buffer( p, start,
                                              (const unsigned char *) t + 2,