https://bugs.webkit.org/show_bug.cgi?id=124673

Reviewed by Anders Carlsson.

To implement key wrapping/unwrapping, we'll need to chain existing operations.
It's much easier to do with C++ callbacks than with functions fulfilling JS
promises directly.

Also, this will decouple CryptoAlgorithm from JS, which is nice.

SubtleCrypto IDL says that all functions return Promise<any>, but in reality,
there is very little polymorphism, the only function whose return type depends
on algorithm is generateKey (it can create a Key or a KeyPair).

* bindings/js/JSDOMPromise.cpp:
(WebCore::PromiseWrapper::PromiseWrapper):
(WebCore::PromiseWrapper::operator=):
* bindings/js/JSDOMPromise.h:
Made it copyable, as each crypto function wraps the promise in success and failure
functional objects now.

* bindings/js/JSSubtleCryptoCustom.cpp:
(WebCore::JSSubtleCrypto::encrypt):
(WebCore::JSSubtleCrypto::decrypt):
(WebCore::JSSubtleCrypto::sign):
(WebCore::JSSubtleCrypto::verify):
(WebCore::JSSubtleCrypto::digest):
(WebCore::JSSubtleCrypto::generateKey):
(WebCore::JSSubtleCrypto::importKey):
(WebCore::JSSubtleCrypto::exportKey):
* crypto/CryptoAlgorithm.cpp:
(WebCore::CryptoAlgorithm::encrypt):
(WebCore::CryptoAlgorithm::decrypt):
(WebCore::CryptoAlgorithm::sign):
(WebCore::CryptoAlgorithm::verify):
(WebCore::CryptoAlgorithm::digest):
(WebCore::CryptoAlgorithm::generateKey):
(WebCore::CryptoAlgorithm::deriveKey):
(WebCore::CryptoAlgorithm::deriveBits):
(WebCore::CryptoAlgorithm::importKey):
* crypto/CryptoAlgorithm.h:
* crypto/CryptoAlgorithmRSASSA_PKCS1_v1_5Mac.cpp:
(WebCore::CryptoAlgorithmRSASSA_PKCS1_v1_5::sign):
(WebCore::CryptoAlgorithmRSASSA_PKCS1_v1_5::verify):
* crypto/algorithms/CryptoAlgorithmAES_CBC.cpp:
(WebCore::CryptoAlgorithmAES_CBC::generateKey):
(WebCore::CryptoAlgorithmAES_CBC::importKey):
* crypto/algorithms/CryptoAlgorithmAES_CBC.h:
* crypto/algorithms/CryptoAlgorithmHMAC.cpp:
(WebCore::CryptoAlgorithmHMAC::generateKey):
(WebCore::CryptoAlgorithmHMAC::importKey):
* crypto/algorithms/CryptoAlgorithmHMAC.h:
* crypto/algorithms/CryptoAlgorithmRSASSA_PKCS1_v1_5.cpp:
(WebCore::CryptoAlgorithmRSASSA_PKCS1_v1_5::generateKey):
(WebCore::CryptoAlgorithmRSASSA_PKCS1_v1_5::importKey):
* crypto/algorithms/CryptoAlgorithmRSASSA_PKCS1_v1_5.h:
* crypto/algorithms/CryptoAlgorithmSHA1.cpp:
(WebCore::CryptoAlgorithmSHA1::digest):
* crypto/algorithms/CryptoAlgorithmSHA1.h:
* crypto/algorithms/CryptoAlgorithmSHA224.cpp:
(WebCore::CryptoAlgorithmSHA224::digest):
* crypto/algorithms/CryptoAlgorithmSHA224.h:
* crypto/algorithms/CryptoAlgorithmSHA256.cpp:
(WebCore::CryptoAlgorithmSHA256::digest):
* crypto/algorithms/CryptoAlgorithmSHA256.h:
* crypto/algorithms/CryptoAlgorithmSHA384.cpp:
(WebCore::CryptoAlgorithmSHA384::digest):
* crypto/algorithms/CryptoAlgorithmSHA384.h:
* crypto/algorithms/CryptoAlgorithmSHA512.cpp:
(WebCore::CryptoAlgorithmSHA512::digest):
* crypto/algorithms/CryptoAlgorithmSHA512.h:
* crypto/keys/CryptoKeyRSA.h:
* crypto/mac/CryptoAlgorithmAES_CBCMac.cpp:
(WebCore::transformAES_CBC):
(WebCore::CryptoAlgorithmAES_CBC::encrypt):
(WebCore::CryptoAlgorithmAES_CBC::decrypt):
* crypto/mac/CryptoAlgorithmHMACMac.cpp:
(WebCore::CryptoAlgorithmHMAC::sign):
(WebCore::CryptoAlgorithmHMAC::verify):
* crypto/mac/CryptoKeyRSAMac.cpp:
(WebCore::CryptoKeyRSA::generatePair):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@159578 268f45cc-cd09-0410-ab3c-d52691b4dbfc