wiz0u/WTelegramClient
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Migrate to .NET Standard 2.0

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[-_-Mr_Veil-_-] 2021-08-08 17:35:05 +03:00
parent 8ae3c2a283
commit 00211e5b5c
6 changed files with 46 additions and 21 deletions
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14
src/Encryption.cs
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@ -63,7 +63,7 @@ namespace WTelegram
if (answerObj is not ServerDHInnerData serverDHinnerData) throw new ApplicationException("not server_DH_inner_data");
long padding = encryptedReader.BaseStream.Length - encryptedReader.BaseStream.Position;
if (padding >= 16) throw new ApplicationException("Too much pad");
if (!Enumerable.SequenceEqual(SHA1.HashData(answer.AsSpan(20..^(int)padding)), answerHash))
if (!Enumerable.SequenceEqual(SHA.SHA1.ComputeHash(answer, 20, answer.Length - (int)padding), answerHash))
throw new ApplicationException("Answer SHA1 mismatch");
if (serverDHinnerData.nonce != resPQ.nonce) throw new ApplicationException("Nonce mismatch");
if (serverDHinnerData.server_nonce != resPQ.server_nonce) throw new ApplicationException("Server Nonce mismatch");
@ -92,7 +92,7 @@ namespace WTelegram
var authKey = gab.ToByteArray(true, true);
//8)
var authKeyHash = SHA1.HashData(authKey);
var authKeyHash = SHA.SHA1.ComputeHash(authKey);
retry_id = BinaryPrimitives.ReadInt64LittleEndian(authKeyHash); // (auth_key_aux_hash)
//9)
reply = await client.RecvInternalAsync();
@ -104,7 +104,7 @@ namespace WTelegram
new_nonce.raw.CopyTo(expected_new_nonceN, 0);
expected_new_nonceN[32] = 1;
Array.Copy(authKeyHash, 0, expected_new_nonceN, 33, 8); // (auth_key_aux_hash)
if (!Enumerable.SequenceEqual(setClientDHparamsAnswer.new_nonce_hashN.raw, SHA1.HashData(expected_new_nonceN).Skip(4)))
if (!Enumerable.SequenceEqual(setClientDHparamsAnswer.new_nonce_hashN.raw, SHA.SHA1.ComputeHash(expected_new_nonceN).Skip(4)))
throw new ApplicationException("setClientDHparamsAnswer.new_nonce_hashN mismatch");
session.AuthKeyID = BinaryPrimitives.ReadInt64LittleEndian(authKeyHash.AsSpan(12));
@ -164,7 +164,7 @@ namespace WTelegram
if (clearLength > 255) throw new ApplicationException("PQInnerData too big");
byte[] clearBuffer = clearStream.GetBuffer();
RNG.GetBytes(clearBuffer, clearLength, 255 - clearLength);
SHA1.HashData(clearBuffer.AsSpan(20..clearLength), clearBuffer); // patch with SHA1
clearBuffer = SHA.SHA1.ComputeHash(clearBuffer, 20, clearLength); // patch with SHA1
var encrypted_data = BigInteger.ModPow(new BigInteger(clearBuffer, true, true), // encrypt with RSA key
new BigInteger(publicKey.e, true, true), new BigInteger(publicKey.n, true, true)).ToByteArray(true, true);
@ -191,7 +191,7 @@ namespace WTelegram
clearStream.SetLength(clearLength + padding);
byte[] clearBuffer = clearStream.GetBuffer();
RNG.GetBytes(clearBuffer, clearLength, padding);
SHA1.HashData(clearBuffer.AsSpan(20..clearLength), clearBuffer);
clearBuffer = SHA.SHA1.ComputeHash(clearBuffer, 20, clearLength);
var encrypted_data = AES_IGE_EncryptDecrypt(clearBuffer.AsSpan(0, clearLength + padding), tmp_aes_key, tmp_aes_iv, true);
return new Fn.SetClientDHParams
@ -208,8 +208,8 @@ namespace WTelegram
rsa.ImportFromPem(pem);
var rsaParam = rsa.ExportParameters(false);
var publicKey = new RSAPublicKey { n = rsaParam.Modulus, e = rsaParam.Exponent };
var bareData = Schema.Serialize(publicKey).AsSpan(4); // bare serialization
var fingerprint = BinaryPrimitives.ReadInt64LittleEndian(SHA1.HashData(bareData).AsSpan(12)); // 64 lower-order bits of SHA1
var bareData = Schema.Serialize(publicKey); // bare serialization
var fingerprint = BinaryPrimitives.ReadInt64LittleEndian(SHA.SHA1.ComputeHash(bareData, 4, bareData.Length - 4).AsSpan(12)); // 64 lower-order bits of SHA1
PublicKeys[fingerprint] = publicKey;
Helpers.Log(1, $"Loaded a public key with fingerprint {fingerprint:X}");
}