/*
* 2017-10-21
*
* in .NET Standard are no classes like:
*
* RNGCryptoServiceProvider
* http://packagesearch.azurewebsites.net/?q=RNGCryptoServiceProvider
*
* SHA256Managed
* http://packagesearch.azurewebsites.net/?q=SHA256Managed
*
* https://github.com/googlesamples/oauth-apps-for-windows
* https://github.com/googlesamples/oauth-apps-for-windows/blob/master/OAuthConsoleApp/OAuthConsoleApp/Program.cs
*/
public string RandomDataBase64Url(uint length)
{
byte[] bytes = new byte[length];
// original code
//RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider();
#if NETSTANDARD1_3
// from System.Security.Cryptography
// designed to be used with cryptographic algorithms
System.Security.Cryptography.RandomNumberGenerator rng = null;
rng = System.Security.Cryptography.RandomNumberGenerator.Create();
rng.GetBytes(bytes);
#else
// insecure (albeit faster) Random class
System.Random rng = new System.Random();
rng.NextBytes(bytes);
#endif
string base64url_no_padding = null;
Base64UrlEncoding e = new Base64UrlEncoding();
base64url_no_padding = e.Encode(bytes, is_padded: false);
return(base64url_no_padding);
}
internal string Serialize()
{
var jsonSerializer = new DataContractJsonSerializer(typeof(HeaderDto));
using (var stream = new MemoryStream())
{
jsonSerializer.WriteObject(stream, this);
return(Base64UrlEncoding.Encode(stream.ToArray()));
}
}
internal static HeaderDto DeserializeHeader(string input)
{
var jsonSerializer = new DataContractJsonSerializer(typeof(HeaderDto));
var headerJson = Base64UrlEncoding.Decode(input);
using (var stream = new MemoryStream(headerJson))
{
return(jsonSerializer.ReadObject(stream) as HeaderDto);
}
}
internal static PayloadDto DeserializePayload(string input, string secretKey, string tokenIdentifier)
{
var headerEncrypted = Base64UrlEncoding.Decode(input);
var decrypted = AesEncryption.DecryptPayload(secretKey, tokenIdentifier, headerEncrypted);
var jsonSerializer = new DataContractJsonSerializer(typeof(Model.PayloadDto), new DataContractJsonSerializerSettings()
{
UseSimpleDictionaryFormat = true
});
using (var stream = new MemoryStream(decrypted))
{
return(jsonSerializer.ReadObject(stream) as PayloadDto);
}
}
public void Encode()
{
Base64UrlEncoding e = new Base64UrlEncoding();
i = "test";
o = e.Encode(i);
Assert.Equal(o, "dGVzdA==");
i = "test0";
o = e.Encode(i);
Assert.Equal(o, "dGVzdDA=");
i = "test00";
o = e.Encode(i);
Assert.Equal(o, "dGVzdDAw");
i = "test01";
o = e.Encode(i);
Assert.Equal(o, "dGVzdDAx");
i = "test000";
o = e.Encode(i);
Assert.Equal(o, "dGVzdDAwMA==");
o = e.Encode(new byte[] { 0, });
Assert.Equal(o, "AA==");
o = e.Encode(new byte[] { 0, }, is_padded: false /*, is_padded_optimized: true*/);
Assert.Equal(o, "AA");
o = e.Encode(new byte[] { 0, }, is_padded: true, is_padded_optimized: true);
Assert.Equal(o, "AA2");
o = e.Encode(new byte[] { 0, 0, });
Assert.Equal(o, "AAA=");
o = e.Encode(new byte[] { 0, 0, }, is_padded: false /*, is_padded_optimized: true*/);
Assert.Equal(o, "AAA");
o = e.Encode(new byte[] { 0, 0, }, is_padded: true, is_padded_optimized: true);
Assert.Equal(o, "AAA1");
o = e.Encode(new byte[] { 0, 0, 0, });
Assert.Equal(o, "AAAA");
o = e.Encode(new byte[] { 0, 0, 0, }, is_padded: false /*, is_padded_optimized: true*/);
Assert.Equal(o, "AAAA");
o = e.Encode(new byte[] { 0, 0, 0, }, is_padded: true, is_padded_optimized: true);
Assert.Equal(o, "AAAA0");
i = "any carnal pleasure.";
o = e.Encode(i);
Assert.Equal(o, "YW55IGNhcm5hbCBwbGVhc3VyZS4=");
i = "any carnal pleasure";
o = e.Encode(i);
Assert.Equal(o, "YW55IGNhcm5hbCBwbGVhc3VyZQ==");
i = "any carnal pleasur";
o = e.Encode(i);
Assert.Equal(o, "YW55IGNhcm5hbCBwbGVhc3Vy");
i = "any carnal pleasu";
o = e.Encode(i);
Assert.Equal(o, "YW55IGNhcm5hbCBwbGVhc3U=");
i = "any carnal pleas";
o = e.Encode(i);
Assert.Equal(o, "YW55IGNhcm5hbCBwbGVhcw==");
i = "pleasure.";
o = e.Encode(i);
Assert.Equal(o, "cGxlYXN1cmUu");
i = "leasure.";
o = e.Encode(i);
Assert.Equal(o, "bGVhc3VyZS4=");
i = "easure.";
o = e.Encode(i);
Assert.Equal(o, "ZWFzdXJlLg==");
i = "asure.";
o = e.Encode(i);
Assert.Equal(o, "YXN1cmUu");
i = "sure.";
o = e.Encode(i);
Assert.Equal(o, "c3VyZS4=");
return;
}
public void Decode(string expectedOutput, string input)
{
var bytes = Base64UrlEncoding.Decode(input);
Assert.Equal(expectedOutput, Encoding.UTF8.GetString(bytes));
}
public void Encode(string input, string expectedOutput)
{
var base64url = Base64UrlEncoding.Encode(Encoding.UTF8.GetBytes(input));
Assert.Equal(expectedOutput, base64url);
}
