// jsc should translate Tasks to Promises if defined on Native apis?
public static Task <bool> verifyAsync(
this SubtleCrypto that,
CryptoKey publicKey, byte[] signature, byte[] data)
{
// Z:\jsc.svn\examples\javascript\crypto\ClientVerifiedWebServiceAuthority\ClientVerifiedWebServiceAuthority\Application.cs
var x = new TaskCompletionSource <bool>();
Native.crypto.subtle.verify(
new
{
name = "RSASSA-PKCS1-v1_5",
},
publicKey, //from generateKey or importKey above
signature, //ArrayBuffer of the signature
//Encoding.UTF8.GetBytes(x.value) //ArrayBuffer of the data
data //ArrayBuffer of the data
).then(
onSuccess: verified =>
{
x.SetResult(verified);
}
);
return(x.Task);
}
public static Task <byte[]> decryptAsync(
this SubtleCrypto that,
object algorithm, CryptoKey key, byte[] data
)
{
Console.WriteLine(
"enter decryptAsync"
);
var x = new TaskCompletionSource <byte[]>();
var promise = that.decrypt(algorithm, key, data);
// android webview wont like .catch
promise.@catch(
err =>
{ // X:\jsc.svn\examples\javascript\Test\TestWebCryptoKeyExport\TestWebCryptoKeyExport\Application.cs
// setexception?
Console.WriteLine(
"decryptAsync " + new { err }
);
}
);
// tested by?
promise.then(
z => { x.SetResult(z); }
);
return(x.Task);
}
// X:\jsc.svn\examples\javascript\Test\TestWebCryptoEncryption\TestWebCryptoEncryption\Application.cs
public static Task <byte[]> encryptAsync(
this SubtleCrypto that,
object algorithm, CryptoKey key, byte[] data
)
{
var x = new TaskCompletionSource <byte[]>();
var promise = that.encrypt(algorithm, key, data);
promise.then(
z => { x.SetResult(z); }
);
return(x.Task);
}
// what an ugly name. keep it?
public static Task <JsonWebKey> exportJSONWebKeyAsync(
this SubtleCrypto that,
CryptoKey key
)
{
// X:\jsc.svn\examples\javascript\Test\TestWebCryptoKeyExport\TestWebCryptoKeyExport\Application.cs
var x = new TaskCompletionSource <JsonWebKey>();
var promise = that.exportKey("jwk", key);
promise.then(
z => { x.SetResult((JsonWebKey)z); }
);
return(x.Task);
}
public static Task <byte[]> digestAsync(
this SubtleCrypto that,
object algorithm,
byte[] data
)
{
// X:\jsc.svn\examples\javascript\async\AsyncWorkerSourceSHA1\AsyncWorkerSourceSHA1\Application.cs
// X:\jsc.svn\examples\javascript\Test\TestWebCryptoSHA1\TestWebCryptoSHA1\Application.cs
var x = new TaskCompletionSource <byte[]>();
var promise = that.digest(algorithm, data);
promise.then(
z => { x.SetResult(z); }
);
return(x.Task);
}
// where to put the async definitions?
// keep the original callback/Promise api also visible?
// tested by
// X:\jsc.svn\examples\javascript\async\Test\TestWebCryptoAsync\TestWebCryptoAsync\Application.cs
//[Obsolete("workaround until jsc implicitly turns Promis into Task for return values.")]
public static Task <KeyPair> generateKeyAsync(
this SubtleCrypto that,
object algorithm,
bool extractable,
string[] keyUsages
)
{
var x = new TaskCompletionSource <KeyPair>();
// Error 1 Keyword 'this' is not valid in a static property, static method, or static field initializer X:\jsc.svn\core\ScriptCoreLib\JavaScript\DOM\SubtleCrypto.cs 59 13 ScriptCoreLib
//this.generateKey();
var promise = that.generateKey(algorithm, extractable, keyUsages);
// we are taking a delegate of a BCL function, and then converting it to IFunction! nice.
return(promise.AsTask());
}
// Z:\jsc.svn\examples\javascript\crypto\ClientVerifiedWebServiceAuthority\ClientVerifiedWebServiceAuthority\Application.cs
// haha. long name eh.
public static Task <CryptoKey> importRSAPublicKeyForVerificationAsync(
this SubtleCrypto that,
byte[] PublicKeyModulus,
byte[] PublicKeyExponent
)
{
// X:\jsc.svn\examples\javascript\async\AsyncWorkerSourceSHA1\AsyncWorkerSourceSHA1\Application.cs
// X:\jsc.svn\examples\javascript\Test\TestWebCryptoSHA1\TestWebCryptoSHA1\Application.cs
var x = new TaskCompletionSource <CryptoKey>();
#region keyData
// make URL friendly:
var m64padding = Convert.ToBase64String(PublicKeyModulus);
var m64 = m64padding;
while (m64.EndsWith("=="))
{
m64 = m64.Substring(0, m64.Length - 2);
}
// http://stackoverflow.com/questions/4492426/remove-trailing-when-base64-encoding
m64 = m64.Replace("+", "-").Replace("/", "_").Replace("=+", "");
var e64 = Convert.ToBase64String(PublicKeyExponent);
//var e64 = e64padding;
//while (e64.EndsWith("=="))
// e64 = e64.Substring(0, e64.Length - 2);
//// http://stackoverflow.com/questions/4492426/remove-trailing-when-base64-encoding
//e64 = e64.Replace("+", "-").Replace("/", "_").Replace("=+", "");
var keyData = new
{
//alg = "RS256",
alg = "RS1",
//alg = "RSA-OAEP",
e = e64,
ext = false,
kty = "RSA",
n = m64
};
#endregion
var algorithm = new
{
name = "RSASSA-PKCS1-v1_5",
//name = "RSA-OAEP",
//hash = new { name = "SHA-256" },
hash = new { name = "SHA-1" }
//modulusLength = 2048,
//publicExponent,
};
Console.WriteLine(new { keyData });
Console.WriteLine(new { algorithm });
var p = Native.crypto.subtle.importKey(
format: "jwk",
keyData: keyData,
algorithm: algorithm,
extractable: false,
keyUsages: new[] { // "encrypt",
// onError { z = SyntaxError: Cannot create a key using the specified key usages. }
"verify"
}
);
p.then(
onSuccess: publicKey =>
{
x.SetResult(publicKey);
// onSuccess {{ z = [object CryptoKey], ElapsedMilliseconds = 9278 }}
//new IHTMLPre { "onSuccess " + new { publicKey, sw.ElapsedMilliseconds } }.AttachToDocument();
//new IHTMLButton { "encrypt for server" }.AttachToDocument().onclick +=
//async delegate
//{
// // Man in the middle?
// // layered security
// var data = Encoding.UTF8.GetBytes("hello from client");
// var esw = Stopwatch.StartNew();
// var ebytes = await Native.crypto.subtle.encryptAsync(algorithm, z, data);
// new IHTMLPre { "encryptAsync " + new { esw.ElapsedMilliseconds } }.AttachToDocument();
// await UploadEncryptedString(
// ebytes
// );
//};
// onSuccess { z = [object CryptoKey], ElapsedMilliseconds = 0 }
//Native.crypto.subtle.verify(
// new
// {
// name = "RSASSA-PKCS1-v1_5",
// },
// publicKey, //from generateKey or importKey above
// x.signature, //ArrayBuffer of the signature
// Encoding.UTF8.GetBytes(x.value) //ArrayBuffer of the data
//).then(
//onSuccess: verified =>
//{
// new IHTMLPre {
// "verify " +
// new {
// verified}
// }.AttachToDocument();
//}
//);
},
onError: importKeyError =>
{
// onError { z = DataError: The JWK member "n" could not be base64url decoded or contained padding }
//new IHTMLPre {
// "onError " +
// new {
// z}
// }.AttachToDocument();
//x.SetException
//{ importKeyError = DataError: The JWK member "e" could not be base64url decoded or contained padding }
Console.WriteLine(new { importKeyError });
x.SetResult(null);
}
);
return(x.Task);
}
