/// <summary>
/// Encodes a string to specified format encoding (base 32/64/etc), strings are first converted to a bom-free utf8 byte[] then to relevant encoding.
/// </summary>
/// <param name="type">encoding type</param>
/// <param name="input">string to be encoded</param>
/// <returns>Encoded string</returns>
public static string EncodeString(EncodingType type, string input)
{
var enc = new UTF8Encoding(false, true);
switch (type)
{
case EncodingType.Base64:
return(Convert.ToBase64String(enc.GetBytes(input), Base64FormattingOptions.None));
case EncodingType.Base64Url:
return(Base64Url.ToBase64ForUrlString(enc.GetBytes(input)));
case EncodingType.Base32Url:
return(Base32Url.ToBase32String(enc.GetBytes(input)));
case EncodingType.ZBase32:
return(new Base32Url(false, false, true, Base32Url.ZBase32Alphabet).Encode(enc.GetBytes(input)));
case EncodingType.Base32LowProfanity:
return(new Base32Url(false, true, true, Base32Url.Base32LowProfanityAlphabet).Encode(enc.GetBytes(input)));
case EncodingType.Base32Crockford:
return(new Base32Url(false, true, true, Base32Url.Base32CrockfordHumanFriendlyAlphabet).Encode(enc.GetBytes(input)));
default:
throw new NotImplementedException("Encoding type not implemented: " + type);
}
}
/// <summary>
/// Decodes an encoded string to the original binary.
/// </summary>
/// <param name="type">Encoding type</param>
/// <param name="input">Encoded string</param>
/// <returns>Original byte[]</returns>
/// <exception cref="ArgumentException">If encoding type is None, UriData, UriPathData or Uri</exception>
public static byte[] Decode(EncodingType type, string input)
{
switch (type)
{
case EncodingType.Base64:
return(Convert.FromBase64String(input));
case EncodingType.Base64Url:
return(Base64Url.FromBase64ForUrlString(input));
case EncodingType.Base32Url:
return(Base32Url.FromBase32String(input));
case EncodingType.ZBase32:
return(new Base32Url(false, false, true, Base32Url.ZBase32Alphabet).Decode(input));
case EncodingType.Base32LowProfanity:
return(new Base32Url(false, true, true, Base32Url.Base32LowProfanityAlphabet).Decode(input));
case EncodingType.Base32Crockford:
return(new Base32Url(false, true, true, Base32Url.Base32CrockfordHumanFriendlyAlphabet).Decode(input));
default:
throw new NotImplementedException("Encoding type not implemented: " + type);
}
}
