fluencelabs/js-libp2p-noise
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handle aead auth tag

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This commit is contained in:
Marin Petrunić
2020-02-17 12:11:55 +01:00
parent 3cbb1d525c
commit c6e7f361c7
13 changed files with 40 additions and 42 deletions
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7
src/handshakes/abstract-handshake.ts
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@ -55,13 +55,13 @@ export abstract class AbstractHandshake {
protected encrypt(k: bytes32, n: uint32, ad: bytes, plaintext: bytes): bytes {
const nonce = this.nonceToBytes(n);
const ctx = new AEAD();
plaintext = Buffer.from(plaintext);
ctx.init(k, nonce);
ctx.aad(ad);
ctx.encrypt(plaintext);
// Encryption is done on the sent reference
return plaintext;
return Buffer.concat([plaintext, ctx.final()]);
}
protected encryptAndHash(ss: SymmetricState, plaintext: bytes): bytes {
@ -79,7 +79,8 @@ export abstract class AbstractHandshake {
protected decrypt(k: bytes32, n: uint32, ad: bytes, ciphertext: bytes): bytes {
const nonce = this.nonceToBytes(n);
const ctx = new AEAD();
ciphertext = Buffer.from(ciphertext);
ciphertext = ciphertext.slice(0, ciphertext.length - 16);
ctx.init(k, nonce);
ctx.aad(ad);
ctx.decrypt(ciphertext);