WebCrypto: Add crypto.subtle.verify() to the platform interfaces.

Tools/DumpRenderTree/chromium/TestRunner/src/MockWebCrypto.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 23 matching lines @@
 #include "public/platform/WebCryptoAlgorithm.h"
 #include <string>
 #include <string.h>
 
 using namespace WebKit;
 
 namespace WebTestRunner {
 
 namespace {
 
+enum Operation {
+    Encrypt,
+    Decrypt,
+    Sign,
+    Verify,
+    Digest,
+};
+
 class MockCryptoOperation : public WebKit::WebCryptoOperation {
 public:
-    MockCryptoOperation(const WebKit::WebCryptoAlgorithm& algorithm, const WebKit::WebCryptoOperationResult& result) : m_algorithm(algorithm), m_result(result) { }
+    MockCryptoOperation(const WebKit::WebCryptoAlgorithm& algorithm, Operation op, const WebKit::WebCryptoOperationResult& result)
+        : m_algorithm(algorithm)
+        , m_operation(op)
+        , m_result(result) { }
 
     virtual void process(const unsigned char* bytes, size_t size) OVERRIDE
     {
         // Don't buffer too much data.
         if (m_data.size() + size > 6) {
             m_result.completeWithError();
             delete this;
             return;
         }
 
         if (size)
             m_data.append(reinterpret_cast<const char*>(bytes), size);
     }
 
     virtual void abort() OVERRIDE
     {
         delete this;
     }
 
     virtual void finish() OVERRIDE
     {
-        const unsigned char digest1[20] = {0xda, 0x39, 0xa3, 0xee, 0x5e, 0x6b, 0x4b, 0x0d, 0x32, 0x55, 0xbf, 0xef, 0x95, 0x60, 0x18, 0x90, 0xaf, 0xd8, 0x07, 0x09};
-        const unsigned char digest2[20] = {0x5b, 0xa9, 0x3c, 0x9d, 0xb0, 0xcf, 0xf9, 0x3f, 0x52, 0xb5, 0x21, 0xd7, 0x42, 0x0e, 0x43, 0xf6, 0xed, 0xa2, 0x78, 0x4f};
-        const unsigned char digest3[20] = {0x86, 0x84, 0x60, 0xd9, 0x8d, 0x09, 0xd8, 0xbb, 0xb9, 0x3d, 0x7b, 0x6c, 0xdd, 0x15, 0xcc, 0x7f, 0xbe, 0xc6, 0x76, 0xb9};
-
-        const unsigned char* result = 0;
-        size_t resultSize;
-
-        if (m_algorithm.id() == WebKit::WebCryptoAlgorithmIdSha1) {
-            resultSize = 20;
-
+        if (m_algorithm.id() == WebKit::WebCryptoAlgorithmIdSha1 && m_operation == Digest) {
             if (m_data.empty()) {
-                result = digest1;
+                const unsigned char result[] = {0xda, 0x39, 0xa3, 0xee, 0x5e, 0x6b, 0x4b, 0x0d, 0x32, 0x55, 0xbf, 0xef, 0x95, 0x60, 0x18, 0x90, 0xaf, 0xd8, 0x07, 0x09};
+                completeWithArrayBuffer(result, sizeof(result));
             } else if (m_data == std::string("\x00", 1)) {
-                result = digest2;
+                const unsigned char result[] = {0x5b, 0xa9, 0x3c, 0x9d, 0xb0, 0xcf, 0xf9, 0x3f, 0x52, 0xb5, 0x21, 0xd7, 0x42, 0x0e, 0x43, 0xf6, 0xed, 0xa2, 0x78, 0x4f};
+                completeWithArrayBuffer(result, sizeof(result));
             } else if (m_data == std::string("\x00\x01\x02\x03\x04\x05", 6)) {
-                result = digest3;
+                const unsigned char result[] = {0x86, 0x84, 0x60, 0xd9, 0x8d, 0x09, 0xd8, 0xbb, 0xb9, 0x3d, 0x7b, 0x6c, 0xdd, 0x15, 0xcc, 0x7f, 0xbe, 0xc6, 0x76, 0xb9};
+                completeWithArrayBuffer(result, sizeof(result));
+            } else {
+                m_result.completeWithError();
             }
-        }
-
-        if (result) {
-            WebKit::WebArrayBuffer buffer = WebKit::WebArrayBuffer::create(resultSize, 1);
-            memcpy(buffer.data(), result, resultSize);
-            m_result.completeWithArrayBuffer(buffer);
+        } else if (m_algorithm.id() == WebKit::WebCryptoAlgorithmIdHmac && m_operation == Sign) {
+            std::string result = "signed HMAC:" + m_data;
+            completeWithArrayBuffer(result.data(), result.size());
+        } else if (m_algorithm.id() == WebKit::WebCryptoAlgorithmIdHmac && m_operation == Verify) {
+            std::string expectedSignature = "signed HMAC:" + m_data;
+            m_result.completeWithBoolean(expectedSignature == m_signature);
         } else {
             m_result.completeWithError();
         }
         delete this;
     }
 
-protected:
+    void setSignature(const unsigned char* signatureBytes, size_t signatureLength)
+    {
+        m_signature.assign(reinterpret_cast<const char*>(signatureBytes), signatureLength);
+    }
+
+private:
+    void completeWithArrayBuffer(const void* data, size_t bytes)
+    {
+        WebKit::WebArrayBuffer buffer = WebKit::WebArrayBuffer::create(bytes, 1);
+        memcpy(buffer.data(), data, bytes);
+        m_result.completeWithArrayBuffer(buffer);
+    }
+
     WebKit::WebCryptoAlgorithm m_algorithm;
+    Operation m_operation;
     WebKit::WebCryptoOperationResult m_result;
     std::string m_data;
+    std::string m_signature;
 };
 
 } // namespace
 
 MockWebCrypto* MockWebCrypto::get()
 {
     static MockWebCrypto crypto;
     return &crypto;
 }
 
 void MockWebCrypto::encrypt(const WebKit::WebCryptoAlgorithm& algorithm, const WebKit::WebCryptoKey& key, WebKit::WebCryptoOperationResult& result)
 {
-    result.initializationSucceeded(new MockCryptoOperation(algorithm, result));
+    result.initializationSucceeded(new MockCryptoOperation(algorithm, Encrypt, result));
 }
 
 void MockWebCrypto::decrypt(const WebKit::WebCryptoAlgorithm& algorithm, const WebKit::WebCryptoKey& key, WebKit::WebCryptoOperationResult& result)
 {
-    result.initializationSucceeded(new MockCryptoOperation(algorithm, result));
+    result.initializationSucceeded(new MockCryptoOperation(algorithm, Decrypt, result));
 }
 
 void MockWebCrypto::sign(const WebKit::WebCryptoAlgorithm& algorithm, const WebKit::WebCryptoKey& key, WebKit::WebCryptoOperationResult& result)
 {
-    result.initializationSucceeded(new MockCryptoOperation(algorithm, result));
+    result.initializationSucceeded(new MockCryptoOperation(algorithm, Sign, result));
+}
+
+void MockWebCrypto::verifySignature(const WebKit::WebCryptoAlgorithm& algorithm, const WebKit::WebCryptoKey& key, const unsigned char* signature, size_t signatureLength, WebKit::WebCryptoOperationResult& result)
+{
+    MockCryptoOperation* op = new MockCryptoOperation(algorithm, Verify, result);
+    op->setSignature(signature, signatureLength);
+    result.initializationSucceeded(op);
 }
 
 void MockWebCrypto::digest(const WebKit::WebCryptoAlgorithm& algorithm, WebKit::WebCryptoOperationResult& result)
 {
-    result.initializationSucceeded(new MockCryptoOperation(algorithm, result));
+    result.initializationSucceeded(new MockCryptoOperation(algorithm, Digest, result));
 }
 
 void MockWebCrypto::importKey(WebKit::WebCryptoKeyFormat, const unsigned char* keyData, size_t keyDataSize, const WebKit::WebCryptoAlgorithm& algorithm, bool extractable, WebKit::WebCryptoKeyUsageMask usages, WebKit::WebCryptoKeyOperationResult& result)
 {
     std::string keyDataString(reinterpret_cast<const char*>(keyData), keyDataSize);
 
     if (keyDataString == "reject") {
         result.completeWithError();
     } else if (keyDataString == "throw") {
         result.initializationFailed();
     } else {
         WebKit::WebCryptoKeyType type = WebKit::WebCryptoKeyTypePrivate;
         if (keyDataString == "public")
             type = WebKit::WebCryptoKeyTypePublic;
         result.completeWithKey(WebKit::WebCryptoKey::create(0, type, extractable, algorithm, usages));
     }
 }
 
 } // namespace WebTestRunner