Module encoding 

Base32 and base64, in the two exact dialects atproto uses.

Both are strict, because the one property this whole crate exists to hold is that a value has exactly one encoding. Each refuses padding, and each refuses a final character whose unused low bits are set, which would decode to the same bytes and re-encode to a different string.

• base32, lowercase, no padding, RFC 4648 alphabet. This is multibase b, which is the only string form atproto permits for a CID.
• base64, standard alphabet (+ and /, not the URL-safe pair), no padding. This is the $bytes representation in the JSON form of the data model, and the base64 crate’s STANDARD_NO_PAD engine, which refuses both.

Enums

DecodeError

Why a string is not valid lowercase unpadded base32.

Constants

BASE32 🔒

The lowercase RFC 4648 base32 alphabet, which is multibase b.

Functions

base32_decode

Decodes lowercase unpadded base32.

base32_encode

Encodes lowercase unpadded base32.

base64_decode

Decodes standard unpadded base64.

base64_encode

Encodes standard unpadded base64.

decode 🔒

Decodes a bit-packed string in alphabet, bits bits per character, under both strictness rules: no padding, and no set bits beyond the last whole byte.

encode 🔒

Encodes bytes bit-packed into alphabet, bits bits per character.