BouncyCastel Cast5 setkey

using System;
using System.Linq;
using System.Text;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.Digests;
using Org.BouncyCastle.Crypto.Engines;
using Org.BouncyCastle.Crypto.Modes;
using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.Math;
using Org.BouncyCastle.Utilities.Encoders;
namespace Common.Encryption {
    public class Cast5Cryptographer {
        private bool forEncryption;
        private BufferedBlockCipher cipher;
        public Cast5Cryptographer(bool forEncryption) {
            this.forEncryption = forEncryption;
            cipher = new BufferedBlockCipher(new CfbBlockCipher(new Cast5Engine(), 64));
            cipher.Init(forEncryption, new ParametersWithIV(new KeyParameter(Encoding.ASCII.GetBytes("BC234xs45nme7HU9")), new byte[8]));
        }
        public void ReInit(byte[] IV, BigInteger pubkey) {
            cipher.Init(forEncryption, new ParametersWithIV(new KeyParameter(pubkey.ToByteArrayUnsigned()), IV));
        }
        public int BlockSize {
            get {
                return cipher.GetBlockSize();
            }
        }
        public byte[] DoFinal() {
            return cipher.DoFinal();
        }
        public byte[] DoFinal(byte[] buffer) {
            return cipher.DoFinal(buffer);
        }
        public byte[] DoFinal(byte[] buffer, int startIndex, int len) {
            return cipher.DoFinal(buffer, startIndex, len);
        }
        public byte[] ProcessBytes(byte[] buffer) {
            return cipher.ProcessBytes(buffer);
        }
        public byte[] ProcessBytes(byte[] buffer, int startIndex, int len) {
            return cipher.ProcessBytes(buffer, startIndex, len);
        }
    }
}

它使用上面的键工作正常，上面的长度为 16 ，但是当我尝试使用此键ReInit()它时 byte[] newkey = new byte[] { 0x39, 0x65, 0x38, 0x63, 0x64, 0x32, 0x36, 0x63, 0x37, 0x37, 0x34, 0x31, 0x33, 0x65, 0x61, 0x36, 0x65, 0x35, 0x35, 0x39, 0x61, 0x32, 0x35, 0x32, 0x66, 0x30, 0x31, 0x35, 0x32, 0x38, 0x66, 0x39, 0x34, 0x38, 0x66, 0x33, 0x33, 0x34, 0x32, 0x62, 0x31, 0x38, 0x37, 0x36, 0x34, 0x61, 0x66, 0x35, 0x36, 0x38, 0x62, 0x39, 0x63, 0x39, 0x30, 0x33, 0x63, 0x35, 0x38, 0x38, 0x35, 0x34, 0x65, 0x63 };

它抛出此异常Index was outside the bounds of the array.

for (int i = 0; i < key.Length; i++) { x[i] = (int)(key[i] & 0xff); }

在 Cast5Engine.cs 年的 SetKey 方法中，所以我更新了这个方法，而不是将固定长度固定为 16 x 我做到了

int[] x = new int[key.Length]; for (int i = 0; i < 16; i++) x[i] = 0;

        /* copy the key into x */
        for (int i = 0; i < key.Length; i++) {
            x[i] = (int)(key[i] & 0xff);
        }`

但是现在通过比较从BouncyCastel Cast5到OpenSSL Cast5的结果，似乎Bouncycastel Cast5没有使用正确的密钥进行更新，因此会产生错误的加密/解密。

是否有任何修复Setkey方法的建议？