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Commit cc25706

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John
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Fixed formatting issues in Crypto.cs (again)
1 parent 70e14db commit cc25706

1 file changed

Lines changed: 35 additions & 35 deletions

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Crypto.cs

Lines changed: 35 additions & 35 deletions
Original file line numberDiff line numberDiff line change
@@ -18,45 +18,45 @@ public static class Crypto
1818
public static uint rotr(uint n, int d) => (n >> d) | (n << (32 - d));
1919

2020
public static byte[] EncryptAndDigest(string aad, byte[] data) {
21-
byte[] nonce = Utilities.RandomBytes(12);
22-
byte[] aadBytes = Encoding.UTF8.GetBytes(aad);
23-
byte[] aadHash = new SHA256Managed().ComputeHash(aadBytes);
24-
var cipher = new GcmBlockCipher(new AesEngine());
25-
var cParams = new AeadParameters(new KeyParameter(aadHash, 0, 16), 128, nonce, aadBytes);
26-
cipher.Init(true, cParams);
27-
byte[] ciphertext = new byte[cipher.GetOutputSize(data.Length)];
28-
int retLen = cipher.ProcessBytes(data, 0, data.Length, ciphertext, 0);
29-
cipher.DoFinal(ciphertext, retLen);
30-
31-
byte[] output = new byte[nonce.Length + ciphertext.Length];
32-
Buffer.BlockCopy(nonce, 0, output, 0, nonce.Length);
33-
Buffer.BlockCopy(ciphertext, 0, output, nonce.Length, ciphertext.Length);
34-
return output;
35-
}
36-
37-
public static byte[] DecryptAndVerify(string aad, byte[] data) {
38-
byte[] nonce = new byte[12];
39-
byte[] ciphertext = new byte[data.Length - 12];
40-
Buffer.BlockCopy(data, 0, nonce, 0, nonce.Length);
41-
Buffer.BlockCopy(data, nonce.Length, ciphertext, 0, ciphertext.Length);
42-
43-
byte[] aadBytes = Encoding.UTF8.GetBytes(aad);
44-
byte[] aadHash = new SHA256Managed().ComputeHash(aadBytes);
45-
var cipher = new GcmBlockCipher(new AesEngine());
46-
var cParams = new AeadParameters(new KeyParameter(aadHash, 0, 16), 128, nonce, aadBytes);
47-
cipher.Init(false, cParams);
48-
byte[] plaintext = new byte[cipher.GetOutputSize(ciphertext.Length)];
49-
int retLen = cipher.ProcessBytes(ciphertext, 0, ciphertext.Length, plaintext, 0);
50-
cipher.DoFinal(plaintext, retLen);
51-
52-
return plaintext;
53-
}
21+
byte[] nonce = Utilities.RandomBytes(12);
22+
byte[] aadBytes = Encoding.UTF8.GetBytes(aad);
23+
byte[] aadHash = new SHA256Managed().ComputeHash(aadBytes);
24+
var cipher = new GcmBlockCipher(new AesEngine());
25+
var cParams = new AeadParameters(new KeyParameter(aadHash, 0, 16), 128, nonce, aadBytes);
26+
cipher.Init(true, cParams);
27+
byte[] ciphertext = new byte[cipher.GetOutputSize(data.Length)];
28+
int retLen = cipher.ProcessBytes(data, 0, data.Length, ciphertext, 0);
29+
cipher.DoFinal(ciphertext, retLen);
30+
31+
byte[] output = new byte[nonce.Length + ciphertext.Length];
32+
Buffer.BlockCopy(nonce, 0, output, 0, nonce.Length);
33+
Buffer.BlockCopy(ciphertext, 0, output, nonce.Length, ciphertext.Length);
34+
return output;
35+
}
36+
37+
public static byte[] DecryptAndVerify(string aad, byte[] data) {
38+
byte[] nonce = new byte[12];
39+
byte[] ciphertext = new byte[data.Length - 12];
40+
Buffer.BlockCopy(data, 0, nonce, 0, nonce.Length);
41+
Buffer.BlockCopy(data, nonce.Length, ciphertext, 0, ciphertext.Length);
42+
43+
byte[] aadBytes = Encoding.UTF8.GetBytes(aad);
44+
byte[] aadHash = new SHA256Managed().ComputeHash(aadBytes);
45+
var cipher = new GcmBlockCipher(new AesEngine());
46+
var cParams = new AeadParameters(new KeyParameter(aadHash, 0, 16), 128, nonce, aadBytes);
47+
cipher.Init(false, cParams);
48+
byte[] plaintext = new byte[cipher.GetOutputSize(ciphertext.Length)];
49+
int retLen = cipher.ProcessBytes(ciphertext, 0, ciphertext.Length, plaintext, 0);
50+
cipher.DoFinal(plaintext, retLen);
51+
52+
return plaintext;
53+
}
5454

5555
public static byte[] CalcProfileHash(byte[] data) {
5656
byte[] pfData = new byte[data.Length - 0xC];
5757
Buffer.BlockCopy(data, 0xC, pfData, 0, pfData.Length);
5858

59-
return FarmHash_Hash32(pfData);
59+
return Hash32(pfData);
6060
}
6161

6262
private static uint Mur(uint a, uint h) {
@@ -71,7 +71,7 @@ private static uint Mur(uint a, uint h) {
7171
return h * 5 + C3;
7272
}
7373

74-
public static byte[] FarmHash_Hash32(byte[] data) {
74+
public static byte[] Hash32(byte[] data) {
7575
// Taken from https://github.com/google/farmhash/blob/master/src/farmhash.cc
7676

7777
uint size = (uint)data.Length;

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