init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Crypto/Parameters/RsaKeyParameters.cs

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+using System;
+using Org.BouncyCastle.Math;
+
+namespace Org.BouncyCastle.Crypto.Parameters;
+
+public class RsaKeyParameters : AsymmetricKeyParameter
+{
+	private static BigInteger SmallPrimesProduct = new BigInteger("8138E8A0FCF3A4E84A771D40FD305D7F4AA59306D7251DE54D98AF8FE95729A1F73D893FA424CD2EDC8636A6C3285E022B0E3866A565AE8108EED8591CD4FE8D2CE86165A978D719EBF647F362D33FCA29CD179FB42401CBAF3DF0C614056F9C8F3CFD51E474AFB6BC6974F78DB8ABA8E9E517FDED658591AB7502BD41849462F", 16);
+
+	private readonly BigInteger modulus;
+
+	private readonly BigInteger exponent;
+
+	public BigInteger Modulus => modulus;
+
+	public BigInteger Exponent => exponent;
+
+	private static BigInteger Validate(BigInteger modulus)
+	{
+		if ((modulus.IntValue & 1) == 0)
+		{
+			throw new ArgumentException("RSA modulus is even", "modulus");
+		}
+		if (!modulus.Gcd(SmallPrimesProduct).Equals(BigInteger.One))
+		{
+			throw new ArgumentException("RSA modulus has a small prime factor");
+		}
+		return modulus;
+	}
+
+	public RsaKeyParameters(bool isPrivate, BigInteger modulus, BigInteger exponent)
+		: base(isPrivate)
+	{
+		if (modulus == null)
+		{
+			throw new ArgumentNullException("modulus");
+		}
+		if (exponent == null)
+		{
+			throw new ArgumentNullException("exponent");
+		}
+		if (modulus.SignValue <= 0)
+		{
+			throw new ArgumentException("Not a valid RSA modulus", "modulus");
+		}
+		if (exponent.SignValue <= 0)
+		{
+			throw new ArgumentException("Not a valid RSA exponent", "exponent");
+		}
+		if (!isPrivate && (exponent.IntValue & 1) == 0)
+		{
+			throw new ArgumentException("RSA publicExponent is even", "exponent");
+		}
+		this.modulus = Validate(modulus);
+		this.exponent = exponent;
+	}
+
+	public override bool Equals(object obj)
+	{
+		if (!(obj is RsaKeyParameters rsaKeyParameters))
+		{
+			return false;
+		}
+		if (rsaKeyParameters.IsPrivate == base.IsPrivate && rsaKeyParameters.Modulus.Equals(modulus))
+		{
+			return rsaKeyParameters.Exponent.Equals(exponent);
+		}
+		return false;
+	}
+
+	public override int GetHashCode()
+	{
+		return modulus.GetHashCode() ^ exponent.GetHashCode() ^ base.IsPrivate.GetHashCode();
+	}
+}