1 files changed, 25 insertions, 0 deletions
diff --git a/net/base/x509_certificate_mac.cc b/net/base/x509_certificate_mac.cc
index dc7d4e9..0b65c77 100644
--- a/net/base/x509_certificate_mac.cc
+++ b/net/base/x509_certificate_mac.cc
@@ -540,6 +540,7 @@ void X509Certificate::Initialize() {
                     &valid_expiry_);
 
   fingerprint_ = CalculateFingerprint(cert_handle_);
+  chain_fingerprint_ = CalculateChainFingerprint();
   serial_number_ = GetCertSerialNumber(cert_handle_);
 }
 
@@ -1069,6 +1070,30 @@ SHA1Fingerprint X509Certificate::CalculateFingerprint(
   return sha1;
 }
 
+SHA1Fingerprint X509Certificate::CalculateChainFingerprint() const {
+  SHA1Fingerprint sha1;
+  memset(sha1.data, 0, sizeof(sha1.data));
+
+  // The CC_SHA(3cc) man page says all CC_SHA1_xxx routines return 1, so
+  // we don't check their return values.
+  CC_SHA1_CTX sha1_ctx;
+  CC_SHA1_Init(&sha1_ctx);
+  CSSM_DATA cert_data;
+  OSStatus status = SecCertificateGetData(cert_handle_, &cert_data);
+  if (status)
+    return sha1;
+  CC_SHA1_Update(&sha1_ctx, cert_data.Data, cert_data.Length);
+  for (size_t i = 0; i < intermediate_ca_certs_.size(); ++i) {
+    status = SecCertificateGetData(intermediate_ca_certs_[i], &cert_data);
+    if (status)
+      return sha1;
+    CC_SHA1_Update(&sha1_ctx, cert_data.Data, cert_data.Length);
+  }
+  CC_SHA1_Final(sha1.data, &sha1_ctx);
+
+  return sha1;
+}
+
 bool X509Certificate::SupportsSSLClientAuth() const {
   CSSMFields fields;
   if (GetCertFields(cert_handle_, &fields) != noErr)