Add support to QUIC for QUIC_VERSION_8: for RSA-PSS signatures, set

net/quic/crypto/proof_verifier_chromium.cc

Index: net/quic/crypto/proof_verifier_chromium.cc
===================================================================
--- net/quic/crypto/proof_verifier_chromium.cc	(revision 216255)
+++ net/quic/crypto/proof_verifier_chromium.cc	(working copy)
@@ -42,6 +42,7 @@
 }
 
 ProofVerifierChromium::Status ProofVerifierChromium::VerifyProof(
+    QuicVersion version,
     const string& hostname,
     const string& server_config,
     const vector<string>& certs,
@@ -89,7 +90,7 @@
 
   // We call VerifySignature first to avoid copying of server_config and
   // signature.
-  if (!VerifySignature(server_config, signature, certs[0])) {
+  if (!VerifySignature(version, server_config, signature, certs[0])) {
     *error_details = "Failed to verify signature of server config";
     DLOG(WARNING) << *error_details;
     verify_details_->cert_verify_result.cert_status = CERT_STATUS_INVALID;
@@ -176,7 +177,8 @@
   return result;
 }
 
-bool ProofVerifierChromium::VerifySignature(const string& signed_data,
+bool ProofVerifierChromium::VerifySignature(QuicVersion version,
+                                            const string& signed_data,
                                             const string& signature,
                                             const string& cert) {
   StringPiece spki;
@@ -196,8 +198,8 @@
         crypto::SignatureVerifier::SHA256;
     crypto::SignatureVerifier::HashAlgorithm mask_hash_alg = hash_alg;
     unsigned int hash_len = 32;  // 32 is the length of a SHA-256 hash.
-    // TODO(wtc): change this to hash_len when we can change the wire format.
-    unsigned int salt_len = signature.size() - hash_len - 2;
+    unsigned int salt_len =
+        version >= QUIC_VERSION_8 ? hash_len : signature.size() - hash_len - 2;

[wtc, 2013/08/08 00:37:33]

This is the most important change, which selects the salt length based on the
Quic version.

 
     bool ok = verifier.VerifyInitRSAPSS(
         hash_alg, mask_hash_alg, salt_len,