Index: net/quic/crypto/proof_verifier_chromium.cc |
diff --git a/net/quic/crypto/proof_verifier_chromium.cc b/net/quic/crypto/proof_verifier_chromium.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..7a764b6f03c3706c103e584ba2c9d5554dab8434 |
--- /dev/null |
+++ b/net/quic/crypto/proof_verifier_chromium.cc |
@@ -0,0 +1,240 @@ |
+// Copyright 2013 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "net/quic/crypto/proof_verifier_chromium.h" |
+ |
+#include "base/bind.h" |
+#include "base/bind_helpers.h" |
+#include "base/callback_helpers.h" |
+#include "base/compiler_specific.h" |
+#include "base/logging.h" |
+#include "base/strings/stringprintf.h" |
+#include "crypto/signature_verifier.h" |
+#include "net/base/net_errors.h" |
+#include "net/base/net_log.h" |
+#include "net/cert/asn1_util.h" |
+#include "net/cert/cert_status_flags.h" |
+#include "net/cert/cert_verifier.h" |
+#include "net/cert/cert_verify_result.h" |
+#include "net/cert/single_request_cert_verifier.h" |
+#include "net/cert/x509_certificate.h" |
+#include "net/cert/x509_util.h" |
+#include "net/quic/crypto/crypto_protocol.h" |
+#include "net/ssl/ssl_config_service.h" |
+ |
+using base::StringPiece; |
+using base::StringPrintf; |
+using std::string; |
+using std::vector; |
+ |
+namespace net { |
+ |
+ProofVerifierChromium::ProofVerifierChromium(CertVerifier* cert_verifier, |
+ const BoundNetLog& net_log) |
+ : cert_verifier_(cert_verifier), |
+ error_details_(NULL), |
+ next_state_(STATE_NONE), |
+ net_log_(net_log) { |
+} |
+ |
+ProofVerifierChromium::~ProofVerifierChromium() { |
+ verifier_.reset(); |
+ |
+ // Reset object state. |
+ callback_.Reset(); |
+ cert_verify_result_.Reset(); |
+} |
+ |
+int ProofVerifierChromium::VerifyProof(const string& hostname, |
+ const string& server_config, |
+ const vector<string>& certs, |
+ const string& signature, |
+ std::string* error_details, |
+ const CompletionCallback& callback) { |
+ DCHECK(error_details); |
+ error_details->clear(); |
+ |
+ DCHECK_EQ(STATE_NONE, next_state_); |
+ if (STATE_NONE != next_state_) { |
+ *error_details = "Certificate is already set and VerifyProof has begun"; |
+ DLOG(WARNING) << *error_details; |
+ return ERR_FAILED; |
+ } |
+ |
+ if (certs.empty()) { |
+ *error_details = "Failed to create certificate chain. Certs are empty."; |
+ DLOG(WARNING) << *error_details; |
+ return ERR_FAILED; |
+ } |
+ |
+ // Convert certs to X509Certificate. |
+ vector<StringPiece> cert_pieces(certs.size()); |
+ for (unsigned i = 0; i < certs.size(); i++) { |
+ cert_pieces[i] = base::StringPiece(certs[i]); |
+ } |
+ cert_ = X509Certificate::CreateFromDERCertChain(cert_pieces); |
+ if (!cert_.get()) { |
+ cert_verify_result_.Reset(); |
+ cert_verify_result_.cert_status = CERT_STATUS_INVALID; |
+ *error_details = "Failed to create certificate chain"; |
+ DLOG(WARNING) << *error_details; |
+ return ERR_FAILED; |
+ } |
+ |
+ // We call VerifySignature first to avoid copying of server_config and |
+ // signature. |
+ if (!VerifySignature(server_config, signature, certs[0])) { |
+ *error_details = "Failed to verify signature of server config"; |
+ DLOG(WARNING) << *error_details; |
+ return ERR_FAILED; |
+ } |
+ |
+ hostname_ = hostname; |
+ callback_ = callback; |
+ error_details_ = error_details; |
+ |
+ next_state_ = STATE_VERIFY_CERT; |
+ return DoLoop(OK); |
+} |
+ |
+int ProofVerifierChromium::DoLoop(int last_result) { |
+ int rv = last_result; |
+ do { |
+ State state = next_state_; |
+ next_state_ = STATE_NONE; |
+ switch (state) { |
+ case STATE_VERIFY_CERT: |
+ DCHECK(rv == OK); |
+ rv = DoVerifyCert(rv); |
+ break; |
+ case STATE_VERIFY_CERT_COMPLETE: |
+ rv = DoVerifyCertComplete(rv); |
+ break; |
+ case STATE_NONE: |
+ default: |
+ rv = ERR_UNEXPECTED; |
+ LOG(DFATAL) << "unexpected state " << state; |
+ break; |
+ } |
+ } while (rv != ERR_IO_PENDING && next_state_ != STATE_NONE); |
+ return rv; |
+} |
+ |
+void ProofVerifierChromium::OnIOComplete(int result) { |
+ int rv = DoLoop(result); |
+ if (rv != ERR_IO_PENDING) { |
+ base::ResetAndReturn(&callback_).Run(rv); |
+ } |
+} |
+ |
+int ProofVerifierChromium::DoVerifyCert(int result) { |
+ next_state_ = STATE_VERIFY_CERT_COMPLETE; |
+ |
+ int flags = 0; |
+ verifier_.reset(new SingleRequestCertVerifier(cert_verifier_)); |
+ return verifier_->Verify( |
+ cert_.get(), |
+ hostname_, |
+ flags, |
+ SSLConfigService::GetCRLSet().get(), |
+ &cert_verify_result_, |
+ base::Bind(&ProofVerifierChromium::OnIOComplete, |
+ base::Unretained(this)), |
+ net_log_); |
+} |
+ |
+int ProofVerifierChromium::DoVerifyCertComplete(int result) { |
+ verifier_.reset(); |
+ |
+ if (result <= ERR_FAILED) { |
+ *error_details_ = StringPrintf("Failed to verify certificate chain: %s", |
+ ErrorToString(result)); |
+ DLOG(WARNING) << *error_details_; |
+ result = ERR_FAILED; |
+ } |
+ |
+ // Exit DoLoop and return the result to the caller to VerifyProof. |
+ DCHECK_EQ(STATE_NONE, next_state_); |
+ return result; |
+} |
+ |
+bool ProofVerifierChromium::VerifySignature(const string& signed_data, |
+ const string& signature, |
+ const string& cert) { |
+ StringPiece spki; |
+ if (!asn1::ExtractSPKIFromDERCert(cert, &spki)) { |
+ DLOG(WARNING) << "ExtractSPKIFromDERCert failed"; |
+ return false; |
+ } |
+ |
+ crypto::SignatureVerifier verifier; |
+ |
+ size_t size_bits; |
+ X509Certificate::PublicKeyType type; |
+ X509Certificate::GetPublicKeyInfo(cert_->os_cert_handle(), &size_bits, |
+ &type); |
+ if (type == X509Certificate::kPublicKeyTypeRSA) { |
+ crypto::SignatureVerifier::HashAlgorithm hash_alg = |
+ 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; |
+ |
+ bool ok = verifier.VerifyInitRSAPSS( |
+ hash_alg, mask_hash_alg, salt_len, |
+ reinterpret_cast<const uint8*>(signature.data()), signature.size(), |
+ reinterpret_cast<const uint8*>(spki.data()), spki.size()); |
+ if (!ok) { |
+ DLOG(WARNING) << "VerifyInitRSAPSS failed"; |
+ return false; |
+ } |
+ } else if (type == X509Certificate::kPublicKeyTypeECDSA) { |
+ // This is the algorithm ID for ECDSA with SHA-256. Parameters are ABSENT. |
+ // RFC 5758: |
+ // ecdsa-with-SHA256 OBJECT IDENTIFIER ::= { iso(1) member-body(2) |
+ // us(840) ansi-X9-62(10045) signatures(4) ecdsa-with-SHA2(3) 2 } |
+ // ... |
+ // When the ecdsa-with-SHA224, ecdsa-with-SHA256, ecdsa-with-SHA384, or |
+ // ecdsa-with-SHA512 algorithm identifier appears in the algorithm field |
+ // as an AlgorithmIdentifier, the encoding MUST omit the parameters |
+ // field. That is, the AlgorithmIdentifier SHALL be a SEQUENCE of one |
+ // component, the OID ecdsa-with-SHA224, ecdsa-with-SHA256, ecdsa-with- |
+ // SHA384, or ecdsa-with-SHA512. |
+ // See also RFC 5480, Appendix A. |
+ static const uint8 kECDSAWithSHA256AlgorithmID[] = { |
+ 0x30, 0x0a, |
+ 0x06, 0x08, |
+ 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x04, 0x03, 0x02, |
+ }; |
+ |
+ if (!verifier.VerifyInit( |
+ kECDSAWithSHA256AlgorithmID, sizeof(kECDSAWithSHA256AlgorithmID), |
+ reinterpret_cast<const uint8*>(signature.data()), |
+ signature.size(), |
+ reinterpret_cast<const uint8*>(spki.data()), |
+ spki.size())) { |
+ DLOG(WARNING) << "VerifyInit failed"; |
+ return false; |
+ } |
+ } else { |
+ LOG(ERROR) << "Unsupported public key type " << type; |
+ return false; |
+ } |
+ |
+ verifier.VerifyUpdate(reinterpret_cast<const uint8*>(kProofSignatureLabel), |
+ sizeof(kProofSignatureLabel)); |
+ verifier.VerifyUpdate(reinterpret_cast<const uint8*>(signed_data.data()), |
+ signed_data.size()); |
+ |
+ if (!verifier.VerifyFinal()) { |
+ DLOG(WARNING) << "VerifyFinal failed"; |
+ return false; |
+ } |
+ |
+ DLOG(INFO) << "VerifyFinal success"; |
+ return true; |
+} |
+ |
+} // namespace net |