commit 91d79387619e0a4fe6a0cc6e045102820b1a18d1
author Teppo Järvelin <teppo.jarvelin@arm.com> Wed Oct 02 09:09:31 2019 +0300
committer Teppo Järvelin <teppo.jarvelin@arm.com> Wed Oct 30 14:07:04 2019 +0200
tree 2b9aeda258513183faab54cdc313c91e5ce989ff
parent aeecf04be3ab7939a93ad6ad613a1f74a56c21b7

Changed every memcpy to SCA equivalent mbedtls_platform_memcpy

This makes physical attacks more difficult.

library/ecdsa.c

diff --git a/library/ecdsa.c b/library/ecdsa.c
index 3a11e18..a9734f6 100644
--- a/library/ecdsa.c
+++ b/library/ecdsa.c
@@ -722,7 +722,7 @@
     MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &p, buf,
                                        MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE ) );
 
-    memcpy( sig, p, len );
+    mbedtls_platform_memcpy( sig, p, len );
     *slen = len;
 
     return( 0 );