This source file includes following definitions.
- parseAlgorithm
- startCryptoOperation
- encrypt
- decrypt
- sign
- verifySignature
- digest
- generateKey
- importKey
- exportKey
- wrapKey
- unwrapKey
#include "config.h"
#include "modules/crypto/SubtleCrypto.h"
#include "bindings/v8/Dictionary.h"
#include "bindings/v8/ExceptionState.h"
#include "modules/crypto/CryptoResultImpl.h"
#include "modules/crypto/Key.h"
#include "modules/crypto/NormalizeAlgorithm.h"
#include "public/platform/Platform.h"
#include "public/platform/WebCrypto.h"
#include "public/platform/WebCryptoAlgorithm.h"
#include "wtf/ArrayBufferView.h"
namespace WebCore {
namespace {
bool parseAlgorithm(const Dictionary& rawAlgorithm, AlgorithmOperation operationType, blink::WebCryptoAlgorithm &algorithm, ExceptionState& exceptionState, CryptoResult* result)
{
if (!rawAlgorithm.isObject()) {
exceptionState.throwTypeError("Algorithm: Not an object");
return false;
}
return parseAlgorithm(rawAlgorithm, operationType, algorithm, result);
}
ScriptPromise startCryptoOperation(const Dictionary& rawAlgorithm, Key* key, AlgorithmOperation operationType, ArrayBufferView* signature, ArrayBufferView* dataBuffer, ExceptionState& exceptionState)
{
bool requiresKey = operationType != Digest;
if (requiresKey && !key) {
exceptionState.throwTypeError("Invalid key argument");
return ScriptPromise();
}
if (operationType == Verify && !signature) {
exceptionState.throwTypeError("Invalid signature argument");
return ScriptPromise();
}
if (!dataBuffer) {
exceptionState.throwTypeError("Invalid dataBuffer argument");
return ScriptPromise();
}
RefPtr<CryptoResultImpl> result = CryptoResultImpl::create();
ScriptPromise promise = result->promise();
blink::WebCryptoAlgorithm algorithm;
if (!parseAlgorithm(rawAlgorithm, operationType, algorithm, exceptionState, result.get()))
return promise;
if (requiresKey && !key->canBeUsedForAlgorithm(algorithm, operationType, result.get()))
return promise;
const unsigned char* data = static_cast<const unsigned char*>(dataBuffer->baseAddress());
unsigned dataSize = dataBuffer->byteLength();
switch (operationType) {
case Encrypt:
blink::Platform::current()->crypto()->encrypt(algorithm, key->key(), data, dataSize, result->result());
break;
case Decrypt:
blink::Platform::current()->crypto()->decrypt(algorithm, key->key(), data, dataSize, result->result());
break;
case Sign:
blink::Platform::current()->crypto()->sign(algorithm, key->key(), data, dataSize, result->result());
break;
case Verify:
blink::Platform::current()->crypto()->verifySignature(algorithm, key->key(), reinterpret_cast<const unsigned char*>(signature->baseAddress()), signature->byteLength(), data, dataSize, result->result());
break;
case Digest:
blink::Platform::current()->crypto()->digest(algorithm, data, dataSize, result->result());
break;
default:
ASSERT_NOT_REACHED();
return ScriptPromise();
}
return promise;
}
}
SubtleCrypto::SubtleCrypto()
{
ScriptWrappable::init(this);
}
ScriptPromise SubtleCrypto::encrypt(const Dictionary& rawAlgorithm, Key* key, ArrayBufferView* data, ExceptionState& exceptionState)
{
return startCryptoOperation(rawAlgorithm, key, Encrypt, 0, data, exceptionState);
}
ScriptPromise SubtleCrypto::decrypt(const Dictionary& rawAlgorithm, Key* key, ArrayBufferView* data, ExceptionState& exceptionState)
{
return startCryptoOperation(rawAlgorithm, key, Decrypt, 0, data, exceptionState);
}
ScriptPromise SubtleCrypto::sign(const Dictionary& rawAlgorithm, Key* key, ArrayBufferView* data, ExceptionState& exceptionState)
{
return startCryptoOperation(rawAlgorithm, key, Sign, 0, data, exceptionState);
}
ScriptPromise SubtleCrypto::verifySignature(const Dictionary& rawAlgorithm, Key* key, ArrayBufferView* signature, ArrayBufferView* data, ExceptionState& exceptionState)
{
return startCryptoOperation(rawAlgorithm, key, Verify, signature, data, exceptionState);
}
ScriptPromise SubtleCrypto::digest(const Dictionary& rawAlgorithm, ArrayBufferView* data, ExceptionState& exceptionState)
{
return startCryptoOperation(rawAlgorithm, 0, Digest, 0, data, exceptionState);
}
ScriptPromise SubtleCrypto::generateKey(const Dictionary& rawAlgorithm, bool extractable, const Vector<String>& rawKeyUsages, ExceptionState& exceptionState)
{
RefPtr<CryptoResultImpl> result = CryptoResultImpl::create();
ScriptPromise promise = result->promise();
blink::WebCryptoKeyUsageMask keyUsages;
if (!Key::parseUsageMask(rawKeyUsages, keyUsages, result.get()))
return promise;
blink::WebCryptoAlgorithm algorithm;
if (!parseAlgorithm(rawAlgorithm, GenerateKey, algorithm, exceptionState, result.get()))
return promise;
blink::Platform::current()->crypto()->generateKey(algorithm, extractable, keyUsages, result->result());
return promise;
}
ScriptPromise SubtleCrypto::importKey(const String& rawFormat, ArrayBufferView* keyData, const Dictionary& rawAlgorithm, bool extractable, const Vector<String>& rawKeyUsages, ExceptionState& exceptionState)
{
if (!keyData) {
exceptionState.throwTypeError("Invalid keyData argument");
return ScriptPromise();
}
RefPtr<CryptoResultImpl> result = CryptoResultImpl::create();
ScriptPromise promise = result->promise();
blink::WebCryptoKeyFormat format;
if (!Key::parseFormat(rawFormat, format, result.get()))
return promise;
blink::WebCryptoKeyUsageMask keyUsages;
if (!Key::parseUsageMask(rawKeyUsages, keyUsages, result.get()))
return promise;
blink::WebCryptoAlgorithm algorithm;
if (!parseAlgorithm(rawAlgorithm, ImportKey, algorithm, exceptionState, result.get()))
return promise;
const unsigned char* keyDataBytes = static_cast<unsigned char*>(keyData->baseAddress());
blink::Platform::current()->crypto()->importKey(format, keyDataBytes, keyData->byteLength(), algorithm, extractable, keyUsages, result->result());
return promise;
}
ScriptPromise SubtleCrypto::exportKey(const String& rawFormat, Key* key, ExceptionState& exceptionState)
{
if (!key) {
exceptionState.throwTypeError("Invalid key argument");
return ScriptPromise();
}
RefPtr<CryptoResultImpl> result = CryptoResultImpl::create();
ScriptPromise promise = result->promise();
blink::WebCryptoKeyFormat format;
if (!Key::parseFormat(rawFormat, format, result.get()))
return promise;
if (!key->extractable()) {
result->completeWithError("key is not extractable");
return promise;
}
blink::Platform::current()->crypto()->exportKey(format, key->key(), result->result());
return promise;
}
ScriptPromise SubtleCrypto::wrapKey(const String& rawFormat, Key* key, Key* wrappingKey, const Dictionary& rawWrapAlgorithm, ExceptionState& exceptionState)
{
if (!key) {
exceptionState.throwTypeError("Invalid key argument");
return ScriptPromise();
}
if (!wrappingKey) {
exceptionState.throwTypeError("Invalid wrappingKey argument");
return ScriptPromise();
}
RefPtr<CryptoResultImpl> result = CryptoResultImpl::create();
ScriptPromise promise = result->promise();
blink::WebCryptoKeyFormat format;
if (!Key::parseFormat(rawFormat, format, result.get()))
return promise;
blink::WebCryptoAlgorithm wrapAlgorithm;
if (!parseAlgorithm(rawWrapAlgorithm, WrapKey, wrapAlgorithm, exceptionState, result.get()))
return promise;
if (!key->extractable()) {
result->completeWithError("key is not extractable");
return promise;
}
if (!wrappingKey->canBeUsedForAlgorithm(wrapAlgorithm, WrapKey, result.get()))
return promise;
blink::Platform::current()->crypto()->wrapKey(format, key->key(), wrappingKey->key(), wrapAlgorithm, result->result());
return promise;
}
ScriptPromise SubtleCrypto::unwrapKey(const String& rawFormat, ArrayBufferView* wrappedKey, Key* unwrappingKey, const Dictionary& rawUnwrapAlgorithm, const Dictionary& rawUnwrappedKeyAlgorithm, bool extractable, const Vector<String>& rawKeyUsages, ExceptionState& exceptionState)
{
if (!wrappedKey) {
exceptionState.throwTypeError("Invalid wrappedKey argument");
return ScriptPromise();
}
if (!unwrappingKey) {
exceptionState.throwTypeError("Invalid unwrappingKey argument");
return ScriptPromise();
}
RefPtr<CryptoResultImpl> result = CryptoResultImpl::create();
ScriptPromise promise = result->promise();
blink::WebCryptoKeyFormat format;
if (!Key::parseFormat(rawFormat, format, result.get()))
return promise;
blink::WebCryptoKeyUsageMask keyUsages;
if (!Key::parseUsageMask(rawKeyUsages, keyUsages, result.get()))
return promise;
blink::WebCryptoAlgorithm unwrapAlgorithm;
if (!parseAlgorithm(rawUnwrapAlgorithm, UnwrapKey, unwrapAlgorithm, exceptionState, result.get()))
return promise;
blink::WebCryptoAlgorithm unwrappedKeyAlgorithm;
if (!parseAlgorithm(rawUnwrappedKeyAlgorithm, ImportKey, unwrappedKeyAlgorithm, exceptionState, result.get()))
return promise;
if (!unwrappingKey->canBeUsedForAlgorithm(unwrapAlgorithm, UnwrapKey, result.get()))
return promise;
const unsigned char* wrappedKeyData = static_cast<const unsigned char*>(wrappedKey->baseAddress());
unsigned wrappedKeyDataSize = wrappedKey->byteLength();
blink::Platform::current()->crypto()->unwrapKey(format, wrappedKeyData, wrappedKeyDataSize, unwrappingKey->key(), unwrapAlgorithm, unwrappedKeyAlgorithm, extractable, keyUsages, result->result());
return promise;
}
}