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Write-mode is finally working!!!

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Lib uses BouncyCastle crypto
This commit is contained in:
Geoffroy Bonneville
2017-09-26 14:32:15 +02:00
parent 22ea657885
commit 27aaa8023a
22 changed files with 133 additions and 178 deletions
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26
ModernKeePassLib/Cryptography/Cipher/StandardAesEngine.cs
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@@ -43,6 +43,12 @@ using Org.BouncyCastle.Crypto.Parameters;
#endif
using ModernKeePassLibPCL.Resources;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.Engines;
using Org.BouncyCastle.Crypto.IO;
using Org.BouncyCastle.Crypto.Modes;
using Org.BouncyCastle.Crypto.Paddings;
using Org.BouncyCastle.Crypto.Parameters;
namespace ModernKeePassLibPCL.Cryptography.Cipher
{
@@ -123,8 +129,8 @@ namespace ModernKeePassLibPCL.Cryptography.Cipher
byte[] pbLocalKey = new byte[32];
Array.Copy(pbKey, pbLocalKey, 32);
#if ModernKeePassLibPCL
#if !ModernKeePassLibPCL
//#if ModernKeePassLibPCL
/*var provider = WinRTCrypto.SymmetricKeyAlgorithmProvider.
OpenAlgorithm(SymmetricAlgorithm.AesCbcPkcs7);
var key = provider.CreateSymmetricKey(pbLocalKey);
@@ -140,9 +146,11 @@ namespace ModernKeePassLibPCL.Cryptography.Cipher
return new CryptoStream(s, decryptor, CryptoStreamMode.Read);
}
*/
var provider = SymmetricKeyAlgorithmProvider.
OpenAlgorithm(SymmetricAlgorithmNames.AesCbcPkcs7);
var key = provider.CreateSymmetricKey(CryptographicBuffer.CreateFromByteArray(pbLocalKey));
using (var ms = new MemoryStream())
{
s.CopyTo(ms);
@@ -152,18 +160,21 @@ namespace ModernKeePassLibPCL.Cryptography.Cipher
{
var encrypted = CryptographicEngine.Encrypt(key, data, CryptographicBuffer.CreateFromByteArray(pbLocalIV));
CryptographicBuffer.CopyToByteArray(encrypted, out resultByteArray);
return new MemoryStream(resultByteArray);
}
else
{
var decrypted = CryptographicEngine.Decrypt(key, data, CryptographicBuffer.CreateFromByteArray(pbLocalIV));
CryptographicBuffer.CopyToByteArray(decrypted, out resultByteArray);
}
return new MemoryStream(resultByteArray, true);
}
}
#else
//#else
#if !KeePassRT
RijndaelManaged r = new RijndaelManaged();
//#if !KeePassRT
//#if !ModernKeePassLibPCL
RijndaelManaged r = new RijndaelManaged();
if(r.BlockSize != 128) // AES block size
{
Debug.Assert(false);
@@ -183,6 +194,7 @@ namespace ModernKeePassLibPCL.Cryptography.Cipher
return new CryptoStream(s, iTransform, bEncrypt ? CryptoStreamMode.Write :
CryptoStreamMode.Read);
#else
AesEngine aes = new AesEngine();
CbcBlockCipher cbc = new CbcBlockCipher(aes);
PaddedBufferedBlockCipher bc = new PaddedBufferedBlockCipher(cbc,
@@ -196,7 +208,7 @@ namespace ModernKeePassLibPCL.Cryptography.Cipher
return new CipherStream(s, cpRead, cpWrite);
#endif
#endif
//#endif
}
public Stream EncryptStream(Stream sPlainText, byte[] pbKey, byte[] pbIV)