public void TestBadAlphabetAllowedIfCS()
{
var g = Guid.NewGuid();
var enc = new Base32Url(false, true, true, "AaCDEFGHIJKLMNOPQRSTUVWXYZ123456");
var o = enc.Encode(g.ToByteArray());
Assert.Equal(g, new Guid(enc.Decode(o)));
}
public void NoPaddingEncodeDecode()
{
var enc = new Base32Url(false, true, false);
foreach (var s in rfc4684TestVectors)
{
Assert.Equal(System.Text.Encoding.ASCII.GetString(enc.Decode(s[1].TrimEnd('='))), s[0]);
Assert.Equal(enc.Encode(System.Text.Encoding.ASCII.GetBytes(s[0])), s[1].TrimEnd('='));
}
}
public void Rfc4648TestVectorsEncodeDecode()
{
var enc = new Base32Url(true, true, false);
foreach (string[] s in rfc4684TestVectors)
{
Assert.Equal(enc.Encode(Encoding.ASCII.GetBytes(s[0])), s[1]);
Assert.Equal(Encoding.ASCII.GetString(enc.Decode(s[1])), s[0]);
}
}
public void TestAssymetricAlphabet()
{
var b32 = new Base32Url(false, true, true, Base32Url.Base32CrockfordHumanFriendlyAlphabet);
var s = "Hello World!";
var b = Encoding.UTF8.GetBytes(s);
var enc = b32.Encode(b);
Assert.Equal("91JPRV3F41BPYWKCCGGG", enc);
Assert.Equal(s, Encoding.UTF8.GetString(b32.Decode(enc)));
// test decode replacing second character which is a 1 above with an I here
Assert.Equal(s, Encoding.UTF8.GetString(b32.Decode("9IJPRV3F41BPYWKCCGGG")));
}
public void NoPaddingCaseSensitiveCustomAlphabetsEncodeDecode()
{
// no vowels (prevents accidental profanity)
// no numbers or letters easily mistakable
foreach (var alphabet in new[] { "BCDFGHKMNPQRSTVWXYZ23456789bcdfg", "BCDFGHKMNPQRSTVWXYZbcdfghkmnpqrs" })
{
var enc = new Base32Url(true, true, false, alphabet);
foreach (var s in rfc4684TestVectors)
{
Assert.Equal(System.Text.Encoding.ASCII.GetString(enc.Decode(enc.Encode(System.Text.Encoding.ASCII.GetBytes(s[0])))), s[0]);
}
}
}
public void NoPaddingCaseInSensitiveCustomAlphabetsEncodeDecode()
{
// no vowels (prevents accidental profanity)
// no numbers or letters easily mistakable
foreach (string alphabet in new[] { "BCDFGHKMNPQRSTVWXYZ23456789~!@#$" })
{
var enc1 = new Base32Url(true, false, false, alphabet);
var enc2 = new Base32Url(true, false, false, alphabet.ToLower());
foreach (string[] s in rfc4684TestVectors)
{
Assert.Equal(Encoding.ASCII.GetString(enc2.Decode(enc1.Encode(Encoding.ASCII.GetBytes(s[0])))), s[0]);
Assert.Equal(Encoding.ASCII.GetString(enc1.Decode(enc2.Encode(Encoding.ASCII.GetBytes(s[0])))), s[0]);
}
}
}
public string GetHashedUserId(string userName)
{
if (string.IsNullOrEmpty(userName))
{
throw new ArgumentException("userName can't be empty", nameof(userName));
}
//https://wiki.gnupg.org/EasyGpg2016/PubkeyDistributionConcept
//32-char long string constructed of the mapped local part of the email, SHA-1 hashed and z-Base-32 encoded.
var sha1 = SHA1.Create();
var hashed = sha1.ComputeHash(Encoding.UTF8.GetBytes(userName));
var base32Encoder = new Base32Url(Base32Url.ZBase32Alphabet);
var hu = base32Encoder.Encode(hashed);
return(hu);
}
public void SequentialValuesSequentialLengths()
{
var bcv = new Base32Url(false, false, false);
for (var j = 1; j < 11; j++)
{
var d = new byte[j];
for (byte b = 0; b < 255; b++)
{
for (var i = 0; i < d.Length; i++)
{
d[i] = (byte)((b + i) % 255);
}
var r = bcv.Decode(bcv.Encode(d));
var tcnt = -1;
var result = Array.TrueForAll(d, b1 => { tcnt++; return(r[tcnt] == d[tcnt]); });
Assert.True(result);
}
}
}
