R2FA

Rust Two-Factor Authentication (R2FA) is a collection of tools for two-factor authentication.

Features

• [x] HOTP - HMAC-based One-time Password Algorithm (RFC 4226)
  • [x] the key can be passed as bytes, an ASCII string, an hexadicimal string or a base32 string
  • [x] customizable counter
  • [x] customizable hash function (sha1, sha256, sha512)
  • [x] customizable output length
  • [x] customizable output alphabet
• [x] TOTP - Time-based One-time Password Algorithm (RFC 6238)
  • [x] the key can be passed as bytes, an ASCII string, an hexadicimal string or a base32 string
  • [x] customizable timestamp
  • [x] customizable period
  • [x] customizable initial time (T0)
  • [x] customizable hash function (sha1, sha256, sha512)
  • [x] customizable output length
  • [x] customizable output alphabet
• [ ] U2F - Universal 2nd Factor (FIDO Alliance)

Installation

You can find R2FA on crates.io and include it in your Cargo.toml:

toml r2fa = "^0.1.0"

Quick example

More examples are available in the documentation.

```rust extern crate r2fa; use r2fa::otp::TOTPBuilder;

let key = "GEZDGNBVGY3TQOJQGEZDGNBVGY3TQOJQ".tostring(); let code = TOTPBuilder::new() .base32key(&key) .finalize() .unwrap() .generate(); assert_eq!(code.len(), 6); ```