CyberDot.Encoding.Base65536

An implementation of base65536 encoding in C#.

Base65536 only uses "safe" Unicode code points (no unassigned code points, no whitespace, no control characters), which means the encoded text is equally valid as UTF-8, UTF-16 or UTF-32.

Usage

using CyberDot.Encoding.Base65536;

var bytes = System.Text.Encoding.UTF8.GetBytes("hello world");
var encoded = Base65536.Encode(bytes); // Output: 驨ꍬ啯𒁷ꍲᕤ

var decoded = Base65536.Decode(encoded); // Output: hello world 

Streaming

ToBase65536Transform/FromBase65536Transform implement ICryptoTransform, so they plug into CryptoStream for streaming encode/decode without buffering the whole payload in memory. They default to UTF-8, or accept any of the three UTF encodings via an Encoding parameter.

using System.Security.Cryptography;

using var output = new MemoryStream();
using (var cryptoStream = new CryptoStream(output, new ToBase65536Transform(), CryptoStreamMode.Write))
{
    sourceStream.CopyTo(cryptoStream);
}

using var decoded = new MemoryStream();
using (var cryptoStream = new CryptoStream(encodedStream, new FromBase65536Transform(), CryptoStreamMode.Read))
{
    cryptoStream.CopyTo(decoded);
}

Credits

Javascript original implementation: base65536.

License

The MIT License (MIT)