Cryptography Interactive

Diffie-Hellman

Block Cipher Modes

Feistel Network

Interactive Diffie-Hellman Key Exchange

p = g = Alice's a = Bob's b =

Private a

—

Public g^a mod p

—

Shared secret

—

→ g^a mod p →

← g^b mod p ←

Private b

—

Public g^b mod p

—

Shared secret

—

Click "Exchange" to run the protocol.

Plaintext blocks:

Plaintext Ciphertext IV / Nonce E_k(·)

ECB:

CBC:

CTR:

Note: identical plaintext blocks (AB) produce identical ciphertext in ECB but different ciphertext in CBC and CTR.

Rounds:

Click "Animate" to step through the Feistel rounds.