crypto-calc's Introduction

crypto-calc

Cryptographic Calculator

Crypto-calc is a crypto "swiss army knife" like app that enables to perform some cryptographic operations on small amount of data. It is developed as web application and should run fine on Chrome/Firefox/Safari (the Internet Explorer has some issues even on IE 11 ). Note that all cryptographic operations run locally (no Ajax).

Project is no longer maintained.

Features

Currently the following features are implemented.

Symmetric encryption/decryption:
- Ciphers: DES / 3DES / AES (! 3DES with double length or triple length keys!)
- Block cipher modes: ECB / CBC / CFB / OFB / CTR / GCM with Additional Authenticated Data
- Padding: ISO-7816-4 / PKCS#5(PKCS#7) / NO Padding / X.923 / ISO 10126
RSA encryption/decryption:
Algos: RSA-OAEP/ PKCS#1.5
Keypair: raw public key , x509 certificate (only encryption), (encrypted) pkcs#8, raw private key
Banking:
- ISO-9564 format 0 to 3 PIN block generation and parsing
- Primary Account Number (PAN) parsing detecting the issuing network
Message hashing and HMAC:
- MD5
- SHA1
- SHA2 (224,256,384,512,512-224,512-256)
- SHA3 (384,512)
Utilities:
- Encoding/Decoding to/from base64,hexa string, ascii...
- Bitwise operations