v6.0.0

Breaking

This is a BIG API change. Please check MIGRATION.md for more details.

What's new

• MSRV was bumped to 1.88.
• Edition was bumped to 2024.
• [no_std] support with #87 and #88.
• We now use the builder pattern to instanciate a Totp struct.
• Error types were unified into one Error type.

Changes

• Types and methods were renamed to more idiomatic alternatives.
• Functions that check the validity of a token now return the matched step to give user more tools to prevent token reuse. #63 ans #75.
• Secret serializes to an unpadded base32 string in human-readable formats (JSON, TOML, ...) and to a raw byte string in binary formats. Deserialization accepts both, plus integer sequences from formats without a native byte type.
• Totp now implements PartialEq and Eq, using Secret's constant-time comparison for the secret field.

Special thanks

• @bushrat011899 For huge work on #87, #88.
• @Amandeepsinghghai and @sidrubs For pointing out something should be done about to avoid token reuse.