protected override bool ReleaseHandle()
{
bool flag = System.IdentityModel.NativeMethods.CryptDestroyKey(base.handle);
if (this.provHandle != null)
{
this.provHandle.DangerousRelease();
this.provHandle = null;
}
return flag;
}
protected override bool ReleaseHandle()
{
bool flag = System.IdentityModel.NativeMethods.CryptDestroyKey(base.handle);
if (this.provHandle != null)
{
this.provHandle.DangerousRelease();
this.provHandle = null;
}
return(flag);
}
internal static unsafe System.IdentityModel.SafeKeyHandle SafeCryptImportKey(System.IdentityModel.SafeProvHandle provHandle, void *pbDataPtr, int cbData)
{
bool success = false;
int error = 0;
System.IdentityModel.SafeKeyHandle phKey = null;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
provHandle.DangerousAddRef(ref success);
}
catch (Exception exception)
{
if (success)
{
provHandle.DangerousRelease();
success = false;
}
if (!(exception is ObjectDisposedException))
{
throw;
}
}
finally
{
if (success)
{
success = System.IdentityModel.NativeMethods.CryptImportKey(provHandle, pbDataPtr, (uint)cbData, IntPtr.Zero, 0, out phKey);
if (!success)
{
error = Marshal.GetLastWin32Error();
provHandle.DangerousRelease();
}
else
{
phKey.provHandle = provHandle;
}
}
}
if (!success)
{
Utility.CloseInvalidOutSafeHandle(phKey);
string str = (error != 0) ? new Win32Exception(error).Message : string.Empty;
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new CryptographicException(System.IdentityModel.SR.GetString("AESCryptImportKeyFailed", new object[] { str })));
}
return(phKey);
}
public unsafe RijndaelCryptoTransform(byte[] rgbKey, byte[] rgbIV, PaddingMode paddingMode, int blockSizeBits, bool encrypt)
{
if (((rgbKey.Length != 0x10) && (rgbKey.Length != 0x18)) && (rgbKey.Length != 0x20))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException(System.IdentityModel.SR.GetString("AESKeyLengthNotSupported", new object[] { rgbKey.Length * 8 })));
}
if (rgbIV.Length != 0x10)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException(System.IdentityModel.SR.GetString("AESIVLengthNotSupported", new object[] { rgbIV.Length * 8 })));
}
if ((paddingMode != PaddingMode.PKCS7) && (paddingMode != PaddingMode.ISO10126))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException(System.IdentityModel.SR.GetString("AESPaddingModeNotSupported", new object[] { paddingMode })));
}
this.paddingMode = paddingMode;
this.blockSize = blockSizeBits / 8;
this.encrypt = encrypt;
System.IdentityModel.SafeProvHandle phProv = null;
System.IdentityModel.SafeKeyHandle phKey = null;
try
{
ThrowIfFalse("AESCryptAcquireContextFailed", System.IdentityModel.NativeMethods.CryptAcquireContextW(out phProv, null, null, 0x18, 0xf0000000));
int cbData = PLAINTEXTKEYBLOBHEADER.SizeOf + rgbKey.Length;
byte[] dst = new byte[cbData];
Buffer.BlockCopy(rgbKey, 0, dst, PLAINTEXTKEYBLOBHEADER.SizeOf, rgbKey.Length);
fixed (IntPtr* ptrRef = dst)
{
PLAINTEXTKEYBLOBHEADER* plaintextkeyblobheaderPtr = (PLAINTEXTKEYBLOBHEADER*) ptrRef;
plaintextkeyblobheaderPtr->bType = 8;
plaintextkeyblobheaderPtr->bVersion = 2;
plaintextkeyblobheaderPtr->reserved = 0;
if (rgbKey.Length == 0x10)
{
plaintextkeyblobheaderPtr->aiKeyAlg = 0x660e;
}
else if (rgbKey.Length == 0x18)
{
plaintextkeyblobheaderPtr->aiKeyAlg = 0x660f;
}
else
{
plaintextkeyblobheaderPtr->aiKeyAlg = 0x6610;
}
plaintextkeyblobheaderPtr->keyLength = rgbKey.Length;
phKey = System.IdentityModel.SafeKeyHandle.SafeCryptImportKey(phProv, (void*) ptrRef, cbData);
}
fixed (IntPtr* ptrRef2 = rgbIV)
{
ThrowIfFalse("AESCryptSetKeyParamFailed", System.IdentityModel.NativeMethods.CryptSetKeyParam(phKey, 1, (void*) ptrRef2, 0));
}
this.keyHandle = phKey;
this.provHandle = phProv;
phKey = null;
phProv = null;
}
finally
{
if (phKey != null)
{
phKey.Close();
}
if (phProv != null)
{
phProv.Close();
}
}
}
public unsafe RijndaelCryptoTransform(byte[] rgbKey, byte[] rgbIV, PaddingMode paddingMode, int blockSizeBits, bool encrypt)
{
if (((rgbKey.Length != 0x10) && (rgbKey.Length != 0x18)) && (rgbKey.Length != 0x20))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException(System.IdentityModel.SR.GetString("AESKeyLengthNotSupported", new object[] { rgbKey.Length * 8 })));
}
if (rgbIV.Length != 0x10)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException(System.IdentityModel.SR.GetString("AESIVLengthNotSupported", new object[] { rgbIV.Length * 8 })));
}
if ((paddingMode != PaddingMode.PKCS7) && (paddingMode != PaddingMode.ISO10126))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException(System.IdentityModel.SR.GetString("AESPaddingModeNotSupported", new object[] { paddingMode })));
}
this.paddingMode = paddingMode;
this.blockSize = blockSizeBits / 8;
this.encrypt = encrypt;
System.IdentityModel.SafeProvHandle phProv = null;
System.IdentityModel.SafeKeyHandle phKey = null;
try
{
ThrowIfFalse("AESCryptAcquireContextFailed", System.IdentityModel.NativeMethods.CryptAcquireContextW(out phProv, null, null, 0x18, 0xf0000000));
int cbData = PLAINTEXTKEYBLOBHEADER.SizeOf + rgbKey.Length;
byte[] dst = new byte[cbData];
Buffer.BlockCopy(rgbKey, 0, dst, PLAINTEXTKEYBLOBHEADER.SizeOf, rgbKey.Length);
fixed(IntPtr *ptrRef = dst)
{
PLAINTEXTKEYBLOBHEADER *plaintextkeyblobheaderPtr = (PLAINTEXTKEYBLOBHEADER *)ptrRef;
plaintextkeyblobheaderPtr->bType = 8;
plaintextkeyblobheaderPtr->bVersion = 2;
plaintextkeyblobheaderPtr->reserved = 0;
if (rgbKey.Length == 0x10)
{
plaintextkeyblobheaderPtr->aiKeyAlg = 0x660e;
}
else if (rgbKey.Length == 0x18)
{
plaintextkeyblobheaderPtr->aiKeyAlg = 0x660f;
}
else
{
plaintextkeyblobheaderPtr->aiKeyAlg = 0x6610;
}
plaintextkeyblobheaderPtr->keyLength = rgbKey.Length;
phKey = System.IdentityModel.SafeKeyHandle.SafeCryptImportKey(phProv, (void *)ptrRef, cbData);
}
fixed(IntPtr *ptrRef2 = rgbIV)
{
ThrowIfFalse("AESCryptSetKeyParamFailed", System.IdentityModel.NativeMethods.CryptSetKeyParam(phKey, 1, (void *)ptrRef2, 0));
}
this.keyHandle = phKey;
this.provHandle = phProv;
phKey = null;
phProv = null;
}
finally
{
if (phKey != null)
{
phKey.Close();
}
if (phProv != null)
{
phProv.Close();
}
}
}
