yabase/base32/rfc4648
Values
pub fn decode(
input: String,
) -> Result(BitArray, error.CodecError)Decode a Base32 string (with or without padding) to a BitArray.
Non-alphabet characters (whitespace, CR/LF, punctuation outside
A-Z, 2-7, and =) are rejected with InvalidCharacter
carrying the offending byte and its position. The alphabet check
runs before the length check so the caller does not see a
misleading InvalidLength when the real fault is an
out-of-alphabet byte.
pub fn decode_strict(
input: String,
) -> Result(BitArray, error.CodecError)Decode input and additionally reject non-canonical encodings
per RFC 4648 §3.5 / §6: the canonical form is the uppercase,
padded shape produced by encode/1, and any deviation
(lowercase, mixed case, missing padding, non-zero pad bits in a
final partial block) is rejected with Error(NonCanonical).
Useful for signature verification, content-addressable storage,
and replay-attack-resistant token handling, where the wire
encoding’s uniqueness is part of the contract.
Returns Error(NonCanonical) when the input is not byte-equal
to encode(decode(input)). Other failure modes
(InvalidCharacter, InvalidLength) are surfaced unchanged from
decode/1.