URLs for Cryptosystem Demos 

Classical ciphers 

Encryption algorithms (RC2, RC4, DES, TripleDES) 

Text-to-text encryption for demonstarting E_k(m || ID_A)

Encryption algorithm AES

Modes of operation 

Online MD5 hash calculator 

Online SHA-1 hash calculator 

MD5 collision 

RSA 

RSA calculator

PGP Message Encryption in JavaScript 

Base64/RADIX64 coder 

IPSec Applications

Hash Algorithms 

Password generator

Magma Calculator