public virtual byte[] ProcessBlock(byte[] inBuf, int inOff, int inLen) { BigInteger bigInteger = core.ConvertInput(inBuf, inOff, inLen); bigInteger = ((!forEncryption) ? UnblindMessage(bigInteger) : BlindMessage(bigInteger)); return(core.ConvertOutput(bigInteger)); }
public virtual byte[] ProcessBlock(byte[] inBuf, int inOff, int inLen) { if (core == null) { throw new InvalidOperationException("RSA engine not initialised"); } return(core.ConvertOutput(core.ProcessBlock(core.ConvertInput(inBuf, inOff, inLen)))); }
public virtual byte[] ProcessBlock(byte[] inBuf, int inOff, int inLen) { if (key == null) { throw new InvalidOperationException("RSA engine not initialised"); } BigInteger bigInteger = core.ConvertInput(inBuf, inOff, inLen); BigInteger bigInteger4; if (key is RsaPrivateCrtKeyParameters) { RsaPrivateCrtKeyParameters rsaPrivateCrtKeyParameters = (RsaPrivateCrtKeyParameters)key; BigInteger publicExponent = rsaPrivateCrtKeyParameters.PublicExponent; if (publicExponent != null) { BigInteger modulus = rsaPrivateCrtKeyParameters.Modulus; BigInteger bigInteger2 = BigIntegers.CreateRandomInRange(BigInteger.One, modulus.Subtract(BigInteger.One), random); BigInteger input = bigInteger2.ModPow(publicExponent, modulus).Multiply(bigInteger).Mod(modulus); BigInteger bigInteger3 = core.ProcessBlock(input); BigInteger val = bigInteger2.ModInverse(modulus); bigInteger4 = bigInteger3.Multiply(val).Mod(modulus); if (!bigInteger.Equals(bigInteger4.ModPow(publicExponent, modulus))) { throw new InvalidOperationException("RSA engine faulty decryption/signing detected"); } } else { bigInteger4 = core.ProcessBlock(bigInteger); } } else { bigInteger4 = core.ProcessBlock(bigInteger); } return(core.ConvertOutput(bigInteger4)); }