75 lines
2.7 KiB
C#
75 lines
2.7 KiB
C#
using NUnit.Framework;
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using chestcrypto;
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using System;
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using System.Text;
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using Sodium;
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namespace Curve25519Tests
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{
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public class Tests
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{
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[SetUp]
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public void Setup()
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{
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}
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[Test]
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public void TestCurve25519Decrypt()
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{
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var alice = PublicKeyBox.GenerateKeyPair();
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var bob = PublicKeyBox.GenerateKeyPair();
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string message = "Hello World";
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byte[] message_bytes = UTF8Encoding.UTF8.GetBytes(message);
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byte[] nonce = Sodium.PublicKeyBox.GenerateNonce();
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byte[] encrypted =
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Sodium.PublicKeyBox.Create(
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message,
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nonce,
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alice.PrivateKey,
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bob.PublicKey
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);
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byte[] both = new byte[nonce.Length + encrypted.Length];
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Buffer.BlockCopy(nonce, 0, both, 0, nonce.Length);
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Buffer.BlockCopy(encrypted, 0, both, nonce.Length, encrypted.Length);
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byte[] decrypted = chestcrypto.Curve25519.decrypt(bob.PrivateKey, alice.PublicKey, both);
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string decrypted_string = Encoding.UTF8.GetString(decrypted, 0, decrypted.Length);
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if (! decrypted_string.Equals(message)){
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Assert.Fail();
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}
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}
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[Test]
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public void TestCurve25519Encrypt()
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{
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var alice = PublicKeyBox.GenerateKeyPair();
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var bob = PublicKeyBox.GenerateKeyPair();
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string message = "Hello World";
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byte[] message_bytes = UTF8Encoding.UTF8.GetBytes(message);
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byte[] encrypted_with_nonce = chestcrypto.Curve25519.encrypt(alice.PrivateKey, bob.PublicKey, message_bytes);
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byte[] used_nonce = new byte[24];
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byte[] encrypted_without_nonce = new byte[encrypted_with_nonce.Length - 24];
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int counter = 0;
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for (int i = 24; i < encrypted_with_nonce.Length; i++){
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encrypted_without_nonce[counter] = encrypted_with_nonce[i];
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counter += 1;
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}
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for (int i = 0; i < chestcrypto.Curve25519.NONCE_BYTE_AMOUNT; i++){
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used_nonce[i] = encrypted_with_nonce[i];
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}
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for (int i = 0; i < chestcrypto.Curve25519.NONCE_BYTE_AMOUNT; i++){
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if (used_nonce[i] != encrypted_with_nonce[i]){
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Assert.Fail();
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}
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}
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byte[] decrypted = PublicKeyBox.Open(encrypted_without_nonce, used_nonce, bob.PrivateKey, alice.PublicKey);
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if (!Encoding.UTF8.GetString(decrypted, 0, decrypted.Length).Equals(message)){
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Assert.Fail();
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}
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}
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}
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} |