tuxmain/double-ratchet-rs
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Added associated data

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Hannes 2021-05-14 18:42:17 +02:00
parent ab74c9ba82
commit d7778a9fbf
1 changed files with 18 additions and 14 deletions
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32
README.md
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@ -19,9 +19,10 @@ let sk = [1; 32]; // Initial Key
let (mut bob_ratchet, public_key) = Ratchet::init_bob(sk); // Creating Bobs Ratchet (returns Bobs PublicKey)
let mut alice_ratchet = Ratchet::init_alice(sk, public_key); // Creating Alice Ratchet with Bobs PublicKey
let data = b"Hello World".to_vec(); // Data to be encrypted
let ad = b"Associated Data"; // Associated Data
let (header, encrypted, nonce) = alice_ratchet.ratchet_encrypt(&data); // Encrypting message with Alice Ratchet (Alice always needs to send the first message)
let decrypted = bob_ratchet.ratchet_decrypt(&header, &encrypted, &nonce); // Decrypt message with Bobs Ratchet
let (header, encrypted, nonce) = alice_ratchet.ratchet_encrypt(&data, ad); // Encrypting message with Alice Ratchet (Alice always needs to send the first message)
let decrypted = bob_ratchet.ratchet_decrypt(&header, &encrypted, &nonce, ad); // Decrypt message with Bobs Ratchet
assert_eq!(data, decrypted)
```
@ -32,12 +33,13 @@ let sk = [1; 32]; // Initial Key
let (mut bob_ratchet, public_key) = Ratchet::init_bob(sk); // Creating Bobs Ratchet (returns Bobs PublicKey)
let mut alice_ratchet = Ratchet::init_alice(sk, public_key); // Creating Alice Ratchet with Bobs PublicKey
let data = b"Hello World".to_vec(); // Data to be encrypted
let ad = b"Associated Data"; // Associated Data
let (header1, encrypted1, nonce1) = alice_ratchet.ratchet_encrypt(&data); // Lost message
let (header2, encrypted2, nonce2) = alice_ratchet.ratchet_encrypt(&data); // Successful message
let (header1, encrypted1, nonce1) = alice_ratchet.ratchet_encrypt(&data, ad); // Lost message
let (header2, encrypted2, nonce2) = alice_ratchet.ratchet_encrypt(&data, ad); // Successful message
let decrypted2 = bob_ratchet.ratchet_decrypt(&header2, &encrypted2, &nonce2); // Decrypting second message first
let decrypted1 = bob_ratchet.ratchet_decrypt(&header1, &encrypted1, &nonce1); // Decrypting latter message
let decrypted2 = bob_ratchet.ratchet_decrypt(&header2, &encrypted2, &nonce2, ad); // Decrypting second message first
let decrypted1 = bob_ratchet.ratchet_decrypt(&header1, &encrypted1, &nonce1, ad); // Decrypting latter message
let comp = decrypted1 == data && decrypted2 == data;
assert!(comp);
@ -48,11 +50,11 @@ assert!(comp);
```rust
use double_ratchet_2::ratchet::Ratchet;
let sk = [1; 32];
let ad = b"Associated Data";
let (mut bob_ratchet, _) = Ratchet::init_bob(sk);
let data = b"Hello World".to_vec();
let (_, _, _) = bob_ratchet.ratchet_encrypt(&data);
let (_, _, _) = bob_ratchet.ratchet_encrypt(&data, ad);
```
### Encryption after recieving initial message
@ -66,12 +68,13 @@ let (mut bob_ratchet, public_key) = Ratchet::init_bob(sk);
let mut alice_ratchet = Ratchet::init_alice(sk, public_key);
let data = b"Hello World".to_vec();
let ad = b"Associated Data";
let (header1, encrypted1, nonce1) = alice_ratchet.ratchet_encrypt(&data);
let _decrypted1 = bob_ratchet.ratchet_decrypt(&header1, &encrypted1, &nonce1);
let (header1, encrypted1, nonce1) = alice_ratchet.ratchet_encrypt(&data, ad);
let _decrypted1 = bob_ratchet.ratchet_decrypt(&header1, &encrypted1, &nonce1, ad);
let (header2, encrypted2, nonce2) = bob_ratchet.ratchet_encrypt(&data);
let decrypted2 = alice_ratchet.ratchet_decrypt(&header2, &encrypted2, &nonce2);
let (header2, encrypted2, nonce2) = bob_ratchet.ratchet_encrypt(&data, ad);
let decrypted2 = alice_ratchet.ratchet_decrypt(&header2, &encrypted2, &nonce2, ad);
assert_eq!(data, decrypted2);
```
@ -94,9 +97,10 @@ let shared_nhkb = [2; 32];
let (mut bob_ratchet, public_key) = RatchetEncHeader::init_bob(sk, shared_hka, shared_nhkb);
let mut alice_ratchet = RatchetEncHeader::init_alice(sk, public_key, shared_hka, shared_nhkb);
let data = b"Hello World".to_vec();
let ad = b"Associated Data";
let (header, encrypted, nonce) = alice_ratchet.ratchet_encrypt(&data);
let decrypted = bob_ratchet.ratchet_decrypt(&header, &encrypted, &nonce);
let (header, encrypted, nonce) = alice_ratchet.ratchet_encrypt(&data, ad);
let decrypted = bob_ratchet.ratchet_decrypt(&header, &encrypted, &nonce, ad);
assert_eq!(data, decrypted)
```