OpenSSL/NSS implementation of ProofVerfifier.

net/quic/crypto/proof_verifier.h

Index: net/quic/crypto/proof_verifier.h
diff --git a/net/quic/crypto/proof_verifier.h b/net/quic/crypto/proof_verifier.h
index 29ed7ea3fc3c339f79b0c196d80450224eb27227..62c6f1a2f64f3534972d35965d15322860b3bfaa 100644
--- a/net/quic/crypto/proof_verifier.h
+++ b/net/quic/crypto/proof_verifier.h
@@ -8,6 +8,7 @@
 #include <string>
 #include <vector>
 
+#include "net/base/completion_callback.h"
 #include "net/base/net_export.h"
 
 namespace net {
@@ -20,20 +21,24 @@ class NET_EXPORT_PRIVATE ProofVerifier {
 
   // VerifyProof checks that |signature| is a valid signature of
   // |server_config| by the public key in the leaf certificate of |certs|, and
-  // that |certs| is a valid chain for |hostname|. On success, it returns true.
-  // On failure, it returns false and sets |*error_details| to a description of
-  // the problem.
+  // that |certs| is a valid chain for |hostname|. On success, it returns OK.
+  // On failure, it returns ERR_FAILED. This function may also return
+  // ERR_IO_PENDING, in which case the |callback| will be run with the final
+  // OK/ERR_FAILED result when the proof is verified.
   //
   // The signature uses SHA-256 as the hash function and PSS padding in the
   // case of RSA.
   //
   // Note: this is just for testing. The CN of the certificate is ignored and
   // wildcards in the SANs are not supported.
-  virtual bool VerifyProof(const std::string& hostname,
-                           const std::string& server_config,
-                           const std::vector<std::string>& certs,
-                           const std::string& signature,
-                           std::string* error_details) const = 0;
+  virtual int VerifyProof(const std::string& hostname,
+                          const std::string& server_config,
+                          const std::vector<std::string>& certs,
+                          const std::string& signature,
+                          const CompletionCallback& callback) = 0;
+
+  // If VerifyProof has failed, it returns the description of the problem.
+  virtual std::string error_details() = 0;
 };
 
 }  // namespace net