private byte[] Decrypt(byte[] data, Interop.libcrypto.OpenSslRsaPadding padding)
{
SafeRsaHandle key = _key.Value;
CheckInvalidKey(key);
byte[] buf = new byte[Interop.libcrypto.RSA_size(key)];
int returnValue = Interop.libcrypto.RSA_private_decrypt(
data.Length,
data,
buf,
key,
padding);
CheckReturn(returnValue);
// If the padding mode is RSA_NO_PADDING then the size of the decrypted block
// will be RSA_size, so let's just return buf.
//
// If any padding was used, then some amount (determined by the padding algorithm)
// will have been reduced, and only returnValue bytes were part of the decrypted
// body, so copy the decrypted bytes to an appropriately sized array before
// returning it.
if (returnValue == buf.Length)
{
return(buf);
}
byte[] plainBytes = new byte[returnValue];
Array.Copy(buf, 0, plainBytes, 0, returnValue);
return(plainBytes);
}
private byte[] Encrypt(byte[] data, Interop.libcrypto.OpenSslRsaPadding padding)
{
SafeRsaHandle key = _key.Value;
CheckInvalidKey(key);
byte[] buf = new byte[Interop.libcrypto.RSA_size(key)];
int returnValue = Interop.libcrypto.RSA_public_encrypt(
data.Length,
data,
buf,
key,
padding);
CheckReturn(returnValue);
return(buf);
}
internal byte[] Encrypt(byte[] data, Interop.libcrypto.OpenSslRsaPadding padding)
{
if (data == null)
{
throw new ArgumentNullException("data");
}
SafeRsaHandle key = _key.Value;
CheckInvalidKey(key);
byte[] buf = new byte[Interop.libcrypto.RSA_size(key)];
int returnValue = Interop.libcrypto.RSA_public_encrypt(
data.Length,
data,
buf,
key,
padding);
CheckReturn(returnValue);
return(buf);
}
