webcrypto: Add ECDSA algorithm (chromium-side)

content/child/webcrypto/openssl/ec_key_openssl.h

 // Copyright 2014 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.
 
-#ifndef CONTENT_CHILD_WEBCRYPTO_OPENSSL_RSA_KEY_OPENSSL_H_
-#define CONTENT_CHILD_WEBCRYPTO_OPENSSL_RSA_KEY_OPENSSL_H_
+#ifndef CONTENT_CHILD_WEBCRYPTO_OPENSSL_EC_KEY_OPENSSL_H_
+#define CONTENT_CHILD_WEBCRYPTO_OPENSSL_EC_KEY_OPENSSL_H_
 
 #include "content/child/webcrypto/algorithm_implementation.h"
 
 namespace content {
 
 namespace webcrypto {
 
-// Base class for an RSA algorithm whose keys additionaly have a hash parameter
-// bound to them. Provides functionality for generating, importing, and
-// exporting keys.
-class RsaHashedAlgorithm : public AlgorithmImplementation {
+// Base class for an EC algorithm. Provides functionality for generating,
+// importing, and exporting keys.
+class EcAlgorithm : public AlgorithmImplementation {
  public:
   // |all_public_key_usages| and |all_private_key_usages| are the set of
   // WebCrypto key usages that are valid for created keys (public and private
   // respectively).
-  //
-  // For instance if public keys support encryption and wrapping, and private
-  // keys support decryption and unwrapping callers should set:
-  //    all_public_key_usages = UsageEncrypt | UsageWrap
-  //    all_private_key_usages = UsageDecrypt | UsageUnwrap
-  // This information is used when importing or generating keys, to enforce
-  // that valid key usages are allowed.
-  RsaHashedAlgorithm(blink::WebCryptoKeyUsageMask all_public_key_usages,
-                     blink::WebCryptoKeyUsageMask all_private_key_usages)
+  EcAlgorithm(blink::WebCryptoKeyUsageMask all_public_key_usages,
+              blink::WebCryptoKeyUsageMask all_private_key_usages)
       : all_public_key_usages_(all_public_key_usages),
         all_private_key_usages_(all_private_key_usages) {}
 
-  // For instance "RSA-OAEP-256".
+  // For instance "ES256".
   virtual const char* GetJwkAlgorithm(
-      const blink::WebCryptoAlgorithmId hash) const = 0;
+      const blink::WebCryptoNamedCurve curve) const = 0;
 
   Status GenerateKey(const blink::WebCryptoAlgorithm& algorithm,
                      bool extractable,
                      blink::WebCryptoKeyUsageMask usages,
                      GenerateKeyResult* result) const override;
 
   Status VerifyKeyUsagesBeforeImportKey(
       blink::WebCryptoKeyFormat format,
       blink::WebCryptoKeyUsageMask usages) const override;
 
@@ skipping 18 matching lines @@
   Status ExportKeyPkcs8(const blink::WebCryptoKey& key,
                         std::vector<uint8_t>* buffer) const override;
 
   Status ExportKeySpki(const blink::WebCryptoKey& key,
                        std::vector<uint8_t>* buffer) const override;
 
   Status ExportKeyJwk(const blink::WebCryptoKey& key,
                       std::vector<uint8_t>* buffer) const override;
 
  private:
-  blink::WebCryptoKeyUsageMask all_public_key_usages_;
-  blink::WebCryptoKeyUsageMask all_private_key_usages_;
+  const blink::WebCryptoKeyUsageMask all_public_key_usages_;
+  const blink::WebCryptoKeyUsageMask all_private_key_usages_;
 };
 
 }  // namespace webcrypto
 
 }  // namespace content
 
-#endif  // CONTENT_CHILD_WEBCRYPTO_OPENSSL_RSA_KEY_OPENSSL_H_
+#endif  // CONTENT_CHILD_WEBCRYPTO_OPENSSL_EC_KEY_OPENSSL_H_