Installation

# from NPM
npm i @li0ard/crapto1_ts

# from JSR
bunx i jsr install @li0ard/crapto1-ts

Usage

[!TIP] Ported mfkey64 and mfkey32 are placed here

Recovery by 2 sets of 32 bit auth

import { recovery32 } from "@li0ard/crapto1_ts" // or @li0ard/crapto1-ts

console.log(recovery32(
    uid,
    tagChallenge,
    readerChallenge,
    readerResponse,
    tagChallenge2,
    readerChallenge2,
    readerResponse2
).toString(16))

Recovery by 1 set of full 64 bit auth

import { recovery64 } from "@li0ard/crapto1_ts" // or @li0ard/crapto1-ts

console.log(recovery64(
    uid,
    tagChallenge,
    readerChallenge,
    readerResponse,
    tagResponse
).toString(16))

Recovery by Nested auth

import { recoveryNested } from "@li0ard/crapto1_ts" // or @li0ard/crapto1-ts

console.log(recoveryNested(
    uid,
    tagChallenge,
    encryptedTagChallenge,
    readerChallenge,
    readerResponse
).toString(16))

Acknowledgements

Some parts were based on or greatly inspired by these projects:

• crapto1 - Original version in C
• Crapto1Sharp - Version in C#
• mfkey32nested - Recovery by nested auth (by @doegox)