Certificate Transparency: Code for unpacking EV cert hashes whitelist

net/cert/x509_certificate_nss.cc

Index: net/cert/x509_certificate_nss.cc
diff --git a/net/cert/x509_certificate_nss.cc b/net/cert/x509_certificate_nss.cc
index 9019625869aacf35bcf3280a4733eeb2bac5ccc6..a57f9ce71f200914bb7a597be57ac70073d410c3 100644
--- a/net/cert/x509_certificate_nss.cc
+++ b/net/cert/x509_certificate_nss.cc
@@ -225,6 +225,21 @@ SHA1HashValue X509Certificate::CalculateFingerprint(
 }
 
 // static
+SHA256HashValue X509Certificate::CalculateFingerprint256(OSCertHandle cert) {
+  SHA256HashValue sha256;
+  memset(sha256.data, 0, sizeof(sha256.data));
+
+  DCHECK(NULL != cert->derCert.data);
+  DCHECK_NE(0U, cert->derCert.len);
+
+  SECStatus rv = HASH_HashBuf(
+      HASH_AlgSHA256, sha256.data, cert->derCert.data, cert->derCert.len);
+  DCHECK_EQ(SECSuccess, rv);
+
+  return sha256;
+}
+
+// static
 SHA1HashValue X509Certificate::CalculateCAFingerprint(
     const OSCertHandles& intermediates) {
   SHA1HashValue sha1;