//---------------------------------------------------------------------
// public Static Methods
//---------------------------------------------------------------------
public static string Encode(byte[] pBytes)
{
long buffer = 0;
StringBuilder encoded = null;
// Initializes
encoded = new StringBuilder();
// loop for bytes for encoding
for (int index = 0; index != pBytes.Length;)
{
// first move 5 bytes into a long
buffer <<= 8;
buffer |= ((long)pBytes[index] & 0x00000000000000FF);
// check if we have 5 bytes already
if (++index % 5 == 0)
{
encoded.Append(Base32.Map(((int)(buffer >> 35)) & 0x001F));
encoded.Append(Base32.Map(((int)(buffer >> 30)) & 0x001F));
encoded.Append(Base32.Map(((int)(buffer >> 25)) & 0x001F));
encoded.Append(Base32.Map(((int)(buffer >> 20)) & 0x001F));
encoded.Append(Base32.Map(((int)(buffer >> 15)) & 0x001F));
encoded.Append(Base32.Map(((int)(buffer >> 10)) & 0x001F));
encoded.Append(Base32.Map(((int)(buffer >> 5)) & 0x001F));
encoded.Append(Base32.Map(((int)buffer) & 0x001F));
// clear buffer
buffer = 0;
}
}
// check if the leftover bytes
switch (pBytes.Length % 5)
{
case 1:
buffer <<= 2;
encoded.Append(Base32.Map(((int)(buffer >> 5)) & 0x001F));
encoded.Append(Base32.Map(((int)buffer) & 0x001F));
break;
case 2:
buffer <<= 4;
encoded.Append(Base32.Map(((int)(buffer >> 15)) & 0x001F));
encoded.Append(Base32.Map(((int)(buffer >> 10)) & 0x001F));
encoded.Append(Base32.Map(((int)(buffer >> 5)) & 0x001F));
encoded.Append(Base32.Map(((int)buffer) & 0x001F));
break;
case 3:
buffer <<= 1;
encoded.Append(Base32.Map(((int)(buffer >> 20)) & 0x001F));
encoded.Append(Base32.Map(((int)(buffer >> 15)) & 0x001F));
encoded.Append(Base32.Map(((int)(buffer >> 10)) & 0x001F));
encoded.Append(Base32.Map(((int)(buffer >> 5)) & 0x001F));
encoded.Append(Base32.Map(((int)buffer) & 0x001F));
break;
case 4:
buffer <<= 3;
encoded.Append(Base32.Map(((int)(buffer >> 30)) & 0x001F));
encoded.Append(Base32.Map(((int)(buffer >> 25)) & 0x001F));
encoded.Append(Base32.Map(((int)(buffer >> 20)) & 0x001F));
encoded.Append(Base32.Map(((int)(buffer >> 15)) & 0x001F));
encoded.Append(Base32.Map(((int)(buffer >> 10)) & 0x001F));
encoded.Append(Base32.Map(((int)(buffer >> 5)) & 0x001F));
encoded.Append(Base32.Map(((int)buffer) & 0x001F));
break;
}
return(encoded.ToString());
}
