-/* Allocate stack for ca certificates if needed */
-if ((ca != NULL) && (*ca == NULL)) {
- if (!(*ca = sk_new(NULL))) {
+ /* If password is zero length or NULL then try verifying both cases
+ * to determine which password is correct. The reason for this is that
+ * under PKCS#12 password based encryption no password and a zero length
+ * password are two different things...
+ */
+
+ if(!pass || !*pass) {
+ if(PKCS12_verify_mac(p12, NULL, 0)) pass = NULL;
+ else if(PKCS12_verify_mac(p12, "", 0)) pass = "";
+ else {
+ PKCS12err(PKCS12_F_PKCS12_PARSE,PKCS12_R_MAC_VERIFY_FAILURE);
+ goto err;
+ }
+ } else if (!PKCS12_verify_mac(p12, pass, -1)) {
+ PKCS12err(PKCS12_F_PKCS12_PARSE,PKCS12_R_MAC_VERIFY_FAILURE);
+ goto err;
+ }
+
+ /* Allocate stack for other certificates */
+ ocerts = sk_X509_new_null();
+
+ if (!ocerts)
+ {