Convert byte array into any base

Question

I have an array of bytes (any length), and I want to encode this array into string using my own base encoder. In .NET is standard Base64 encoder, but w

Answer 1

BASE64 works well, because 64 is a power of 2 (2^6) so each character holds 6 bits of data, and 3 bytes (3 * 8 = 24 bits) can be encoded into 4 characters (4 * 6 = 24). The encoding & decoding can be down merely bit shifting bits.

For bases which do not align with a power of 2 (like your base 62 or Base 53), Then you must treat the message you are trying to encode as one long number and perform divison and modulo operations on it. You'd probably be better off using a Base32 encoding and squandering a bit of bandwidth.