X-Git-Url: https://wagner.pp.ru/gitweb/?a=blobdiff_plain;ds=sidebyside;f=gost_asn1.c;h=0412d2c7c13cdd51325506d2961f30eaac37f4c4;hb=02f99b2e3b46f4ff44fd5420487551d5a447c2ad;hp=11686339b7a5c8cb12a7481e54bbab579ef02086;hpb=c98ba9d03213d0c63d6874539d59f7b55fbc3fae;p=openssl-gost%2Fengine.git

diff --git a/gost_asn1.c b/gost_asn1.c
index 1168633..0412d2c 100644
--- a/gost_asn1.c
+++ b/gost_asn1.c
@@ -54,3 +54,19 @@ ASN1_NDEF_SEQUENCE(GOST_CLIENT_KEY_EXCHANGE_PARAMS) = { /* FIXME incomplete */
 
 ASN1_NDEF_SEQUENCE_END(GOST_CLIENT_KEY_EXCHANGE_PARAMS)
 IMPLEMENT_ASN1_FUNCTIONS(GOST_CLIENT_KEY_EXCHANGE_PARAMS)
+
+/* Convert byte buffer to bignum, skipping leading zeros*/
+BIGNUM *getbnfrombuf(const unsigned char *buf, size_t len)
+{
+    BIGNUM *b;
+
+    while (*buf == 0 && len > 0) {
+        buf++;
+        len--;
+    }
+    if (len)
+        return BN_bin2bn(buf, len, NULL);
+    b = BN_new();
+    BN_zero(b);
+    return b;
+}