첨부 소스 코드는 나눔고딕코딩 폰트를 사용합니다.
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TestProject.zip
0.01MB

▶ HIGHTECB.cs

using System;

namespace TestProject
{
    /// <summary>
    /// HIGHT ECB
    /// </summary>
    public class HIGHTECB
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Field
        ////////////////////////////////////////////////////////////////////////////////////////// Private

        #region Field

        /// <summary>
        /// HIGHT 델타 베열
        /// </summary>
        private readonly byte[] hightDeltaArray =
        {
            0x5a, 0x6d, 0x36, 0x1b, 0x0d, 0x06, 0x03, 0x41, 
            0x60, 0x30, 0x18, 0x4c, 0x66, 0x33, 0x59, 0x2c, 
            0x56, 0x2b, 0x15, 0x4a, 0x65, 0x72, 0x39, 0x1c, 
            0x4e, 0x67, 0x73, 0x79, 0x3c, 0x5e, 0x6f, 0x37, 
            0x5b, 0x2d, 0x16, 0x0b, 0x05, 0x42, 0x21, 0x50, 
            0x28, 0x54, 0x2a, 0x55, 0x6a, 0x75, 0x7a, 0x7d, 
            0x3e, 0x5f, 0x2f, 0x17, 0x4b, 0x25, 0x52, 0x29, 
            0x14, 0x0a, 0x45, 0x62, 0x31, 0x58, 0x6c, 0x76, 
            0x3b, 0x1d, 0x0e, 0x47, 0x63, 0x71, 0x78, 0x7c, 
            0x7e, 0x7f, 0x3f, 0x1f, 0x0f, 0x07, 0x43, 0x61, 
            0x70, 0x38, 0x5c, 0x6e, 0x77, 0x7b, 0x3d, 0x1e, 
            0x4f, 0x27, 0x53, 0x69, 0x34, 0x1a, 0x4d, 0x26, 
            0x13, 0x49, 0x24, 0x12, 0x09, 0x04, 0x02, 0x01, 
            0x40, 0x20, 0x10, 0x08, 0x44, 0x22, 0x11, 0x48, 
            0x64, 0x32, 0x19, 0x0c, 0x46, 0x23, 0x51, 0x68, 
            0x74, 0x3a, 0x5d, 0x2e, 0x57, 0x6b, 0x35, 0x5a
        };

        /// <summary>
        /// HIGHT F0 배열
        /// </summary>
        private readonly byte[] hightF0Array =
        {
            0x00, 0x86, 0x0d, 0x8b, 0x1a, 0x9c, 0x17, 0x91, 
            0x34, 0xb2, 0x39, 0xbf, 0x2e, 0xa8, 0x23, 0xa5, 
            0x68, 0xee, 0x65, 0xe3, 0x72, 0xf4, 0x7f, 0xf9, 
            0x5c, 0xda, 0x51, 0xd7, 0x46, 0xc0, 0x4b, 0xcd, 
            0xd0, 0x56, 0xdd, 0x5b, 0xca, 0x4c, 0xc7, 0x41, 
            0xe4, 0x62, 0xe9, 0x6f, 0xfe, 0x78, 0xf3, 0x75, 
            0xb8, 0x3e, 0xb5, 0x33, 0xa2, 0x24, 0xaf, 0x29, 
            0x8c, 0x0a, 0x81, 0x07, 0x96, 0x10, 0x9b, 0x1d, 
            0xa1, 0x27, 0xac, 0x2a, 0xbb, 0x3d, 0xb6, 0x30, 
            0x95, 0x13, 0x98, 0x1e, 0x8f, 0x09, 0x82, 0x04, 
            0xc9, 0x4f, 0xc4, 0x42, 0xd3, 0x55, 0xde, 0x58, 
            0xfd, 0x7b, 0xf0, 0x76, 0xe7, 0x61, 0xea, 0x6c, 
            0x71, 0xf7, 0x7c, 0xfa, 0x6b, 0xed, 0x66, 0xe0, 
            0x45, 0xc3, 0x48, 0xce, 0x5f, 0xd9, 0x52, 0xd4, 
            0x19, 0x9f, 0x14, 0x92, 0x03, 0x85, 0x0e, 0x88, 
            0x2d, 0xab, 0x20, 0xa6, 0x37, 0xb1, 0x3a, 0xbc, 
            0x43, 0xc5, 0x4e, 0xc8, 0x59, 0xdf, 0x54, 0xd2, 
            0x77, 0xf1, 0x7a, 0xfc, 0x6d, 0xeb, 0x60, 0xe6, 
            0x2b, 0xad, 0x26, 0xa0, 0x31, 0xb7, 0x3c, 0xba, 
            0x1f, 0x99, 0x12, 0x94, 0x05, 0x83, 0x08, 0x8e, 
            0x93, 0x15, 0x9e, 0x18, 0x89, 0x0f, 0x84, 0x02, 
            0xa7, 0x21, 0xaa, 0x2c, 0xbd, 0x3b, 0xb0, 0x36, 
            0xfb, 0x7d, 0xf6, 0x70, 0xe1, 0x67, 0xec, 0x6a, 
            0xcf, 0x49, 0xc2, 0x44, 0xd5, 0x53, 0xd8, 0x5e, 
            0xe2, 0x64, 0xef, 0x69, 0xf8, 0x7e, 0xf5, 0x73, 
            0xd6, 0x50, 0xdb, 0x5d, 0xcc, 0x4a, 0xc1, 0x47, 
            0x8a, 0x0c, 0x87, 0x01, 0x90, 0x16, 0x9d, 0x1b, 
            0xbe, 0x38, 0xb3, 0x35, 0xa4, 0x22, 0xa9, 0x2f, 
            0x32, 0xb4, 0x3f, 0xb9, 0x28, 0xae, 0x25, 0xa3, 
            0x06, 0x80, 0x0b, 0x8d, 0x1c, 0x9a, 0x11, 0x97, 
            0x5a, 0xdc, 0x57, 0xd1, 0x40, 0xc6, 0x4d, 0xcb, 
            0x6e, 0xe8, 0x63, 0xe5, 0x74, 0xf2, 0x79, 0xff
        };

        /// <summary>
        /// HIGHT F1 배열
        /// </summary>
        private readonly byte[] hightF1Array =
        {
            0x00, 0x58, 0xb0, 0xe8, 0x61, 0x39, 0xd1, 0x89, 
            0xc2, 0x9a, 0x72, 0x2a, 0xa3, 0xfb, 0x13, 0x4b, 
            0x85, 0xdd, 0x35, 0x6d, 0xe4, 0xbc, 0x54, 0x0c, 
            0x47, 0x1f, 0xf7, 0xaf, 0x26, 0x7e, 0x96, 0xce, 
            0x0b, 0x53, 0xbb, 0xe3, 0x6a, 0x32, 0xda, 0x82, 
            0xc9, 0x91, 0x79, 0x21, 0xa8, 0xf0, 0x18, 0x40, 
            0x8e, 0xd6, 0x3e, 0x66, 0xef, 0xb7, 0x5f, 0x07, 
            0x4c, 0x14, 0xfc, 0xa4, 0x2d, 0x75, 0x9d, 0xc5, 
            0x16, 0x4e, 0xa6, 0xfe, 0x77, 0x2f, 0xc7, 0x9f, 
            0xd4, 0x8c, 0x64, 0x3c, 0xb5, 0xed, 0x05, 0x5d, 
            0x93, 0xcb, 0x23, 0x7b, 0xf2, 0xaa, 0x42, 0x1a, 
            0x51, 0x09, 0xe1, 0xb9, 0x30, 0x68, 0x80, 0xd8, 
            0x1d, 0x45, 0xad, 0xf5, 0x7c, 0x24, 0xcc, 0x94, 
            0xdf, 0x87, 0x6f, 0x37, 0xbe, 0xe6, 0x0e, 0x56, 
            0x98, 0xc0, 0x28, 0x70, 0xf9, 0xa1, 0x49, 0x11, 
            0x5a, 0x02, 0xea, 0xb2, 0x3b, 0x63, 0x8b, 0xd3, 
            0x2c, 0x74, 0x9c, 0xc4, 0x4d, 0x15, 0xfd, 0xa5, 
            0xee, 0xb6, 0x5e, 0x06, 0x8f, 0xd7, 0x3f, 0x67, 
            0xa9, 0xf1, 0x19, 0x41, 0xc8, 0x90, 0x78, 0x20, 
            0x6b, 0x33, 0xdb, 0x83, 0x0a, 0x52, 0xba, 0xe2, 
            0x27, 0x7f, 0x97, 0xcf, 0x46, 0x1e, 0xf6, 0xae, 
            0xe5, 0xbd, 0x55, 0x0d, 0x84, 0xdc, 0x34, 0x6c, 
            0xa2, 0xfa, 0x12, 0x4a, 0xc3, 0x9b, 0x73, 0x2b, 
            0x60, 0x38, 0xd0, 0x88, 0x01, 0x59, 0xb1, 0xe9, 
            0x3a, 0x62, 0x8a, 0xd2, 0x5b, 0x03, 0xeb, 0xb3, 
            0xf8, 0xa0, 0x48, 0x10, 0x99, 0xc1, 0x29, 0x71, 
            0xbf, 0xe7, 0x0f, 0x57, 0xde, 0x86, 0x6e, 0x36, 
            0x7d, 0x25, 0xcd, 0x95, 0x1c, 0x44, 0xac, 0xf4, 
            0x31, 0x69, 0x81, 0xd9, 0x50, 0x08, 0xe0, 0xb8, 
            0xf3, 0xab, 0x43, 0x1b, 0x92, 0xca, 0x22, 0x7a, 
            0xb4, 0xec, 0x04, 0x5c, 0xd5, 0x8d, 0x65, 0x3d, 
            0x76, 0x2e, 0xc6, 0x9e, 0x17, 0x4f, 0xa7, 0xff
        };

        /// <summary>
        /// 스케줄 키 배열
        /// </summary>
        private byte[] scheduleKeyArray = new byte[136];

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - HIGHTECB(userKeyArray)

        /// <summary>
        /// 생성자
        /// </summary>
        /// <param name="userKeyArray">사용자 키 배열</param>
        public HIGHTECB(byte[] userKeyArray)
        {
            SetScheduleKey(userKeyArray);
        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 암호화하기 - Encrypt(sourceArray)

        /// <summary>
        /// 암호화하기
        /// </summary>
        /// <param name="sourceArray">소스 배열</param>
        /// <returns>암호화 배열</returns>
        public byte[] Encrypt(byte[] sourceArray)
        {
            int length;

            if(sourceArray.Length == 0)
            {
                return null;
            }

            if((sourceArray.Length % 8) != 0)
            {
                length = sourceArray.Length + (8 - (sourceArray.Length % 8));
            }
            else
            {
                length = sourceArray.Length;
            }

            byte[] targetArray            = new byte[length];
            byte[] sourceTemporaryArray   = new byte[8];
            byte[] targetTemporaryArray   = new byte[8];
            byte[] sourceArrayWithPadding = new byte[length];

            Array.Copy(sourceArray, sourceArrayWithPadding, sourceArray.Length);

            for(int i = 0; i < (int)(length / 8); i++)
            {
                Array.Copy(sourceArrayWithPadding, i * 8, sourceTemporaryArray, 0, 8);

                EncryptBlock(sourceTemporaryArray, targetTemporaryArray);

                Array.Copy(targetTemporaryArray, 0, targetArray, i * 8, 8);
            }

            return targetArray;
        }

        #endregion
        #region 복호화하기 - Decrypt(sourceArray)

        /// <summary>
        /// 복호화하기
        /// </summary>
        /// <param name="sourceArray">소스 배열</param>
        /// <returns>복호화 배열</returns>
        public byte[] Decrypt(byte[] sourceArray)
        {
            int length;

            if(sourceArray.Length == 0)
            {
                return null;
            }

            if((sourceArray.Length % 8) != 0)
            {
                length = sourceArray.Length + (8 - (sourceArray.Length % 8));
            }
            else
            {
                length = sourceArray.Length;
            }

            byte[] targetArray            = new byte[length];
            byte[] sourceTemporaryArray   = new byte[8];
            byte[] targetTemporaryArray   = new byte[8];
            byte[] sourceArrayWithPadding = new byte[length];

            Array.Copy(sourceArray, sourceArrayWithPadding, sourceArray.Length);

            for(int i = 0; i < (int)(length / 8); i++)
            {
                Array.Copy(sourceArrayWithPadding, i * 8, sourceTemporaryArray, 0, 8);

                DecryptBlock(sourceTemporaryArray, targetTemporaryArray);

                Array.Copy(targetTemporaryArray, 0, targetArray, i * 8, 8);
            }

            return targetArray;
        }

        #endregion

        ////////////////////////////////////////////////////////////////////////////////////////// Private

        #region 스케줄 키 설정하기 - SetScheduleKey(userKeyArray)

        /// <summary>
        /// 스케줄 키 설정하기
        /// </summary>
        /// <param name="userKeyArray">사용자 키 배열</param>
        private void SetScheduleKey(byte[] userKeyArray)
        {
            for(int i = 0; i < 4; i++)
            {
                this.scheduleKeyArray[i    ] = userKeyArray[i + 12];
                this.scheduleKeyArray[i + 4] = userKeyArray[i     ];
            }

            for(int i = 0; i < 8; i++)
            {
                for(int j = 0; j < 8; j++)
                {
                    this.scheduleKeyArray[8 + 16 * i + j] = (byte)((userKeyArray[(j - i) & 7] + this.hightDeltaArray[(16 * i + j)]) & 0xff);
                }
                for (int j = 0; j < 8; j++)
                {
                    this.scheduleKeyArray[8 + 16 * i + j + 8] = (byte)((userKeyArray[((j - i) & 7) + 8] + this.hightDeltaArray[16 * i + j + 8]) & 0xff);
                }
            }
        }

        #endregion
        #region 블럭 암호화하기 - EncryptBlock(sourceArray, targetArray)

        /// <summary>
        /// 블럭 암호화하기
        /// </summary>
        /// <param name="sourceArray">소스 배열</param>
        /// <param name="targetArray">타겟 배열</param>
        private void EncryptBlock(byte[] sourceArray, byte[] targetArray)
        {
            byte[] temporaryArray = new byte[8];

            temporaryArray[1] = sourceArray[1];
            temporaryArray[3] = sourceArray[3];
            temporaryArray[5] = sourceArray[5];
            temporaryArray[7] = sourceArray[7];

            temporaryArray[0] = (byte)((sourceArray[0] + this.scheduleKeyArray[0]) & 0xff);
            temporaryArray[2] = (byte)((sourceArray[2] ^ this.scheduleKeyArray[1])       );
            temporaryArray[4] = (byte)((sourceArray[4] + this.scheduleKeyArray[2]) & 0xff);
            temporaryArray[6] = (byte)((sourceArray[6] ^ this.scheduleKeyArray[3])       );

            void HIGHT_ENC(int k, int i0, int i1, int i2, int i3, int i4, int i5, int i6, int i7)
            {
                temporaryArray[i0] = (byte)((temporaryArray[i0] ^ (this.hightF0Array[temporaryArray[i1]] + this.scheduleKeyArray[4 * k + 3])) & 0xff);
                temporaryArray[i2] = (byte)((temporaryArray[i2] + (this.hightF1Array[temporaryArray[i3]] ^ this.scheduleKeyArray[4 * k + 2])) & 0xff);
                temporaryArray[i4] = (byte)((temporaryArray[i4] ^ (this.hightF0Array[temporaryArray[i5]] + this.scheduleKeyArray[4 * k + 1])) & 0xff);
                temporaryArray[i6] = (byte)((temporaryArray[i6] + (this.hightF1Array[temporaryArray[i7]] ^ this.scheduleKeyArray[4 * k + 0])) & 0xff);
            }

            HIGHT_ENC( 2, 7, 6, 5, 4, 3, 2, 1, 0);
            HIGHT_ENC( 3, 6, 5, 4, 3, 2, 1, 0, 7);
            HIGHT_ENC( 4, 5, 4, 3, 2, 1, 0, 7, 6);
            HIGHT_ENC( 5, 4, 3, 2, 1, 0, 7, 6, 5);
            HIGHT_ENC( 6, 3, 2, 1, 0, 7, 6, 5, 4);
            HIGHT_ENC( 7, 2, 1, 0, 7, 6, 5, 4, 3);
            HIGHT_ENC( 8, 1, 0, 7, 6, 5, 4, 3, 2);
            HIGHT_ENC( 9, 0, 7, 6, 5, 4, 3, 2, 1);
            HIGHT_ENC(10, 7, 6, 5, 4, 3, 2, 1, 0);
            HIGHT_ENC(11, 6, 5, 4, 3, 2, 1, 0, 7);
            HIGHT_ENC(12, 5, 4, 3, 2, 1, 0, 7, 6);
            HIGHT_ENC(13, 4, 3, 2, 1, 0, 7, 6, 5);
            HIGHT_ENC(14, 3, 2, 1, 0, 7, 6, 5, 4);
            HIGHT_ENC(15, 2, 1, 0, 7, 6, 5, 4, 3);
            HIGHT_ENC(16, 1, 0, 7, 6, 5, 4, 3, 2);
            HIGHT_ENC(17, 0, 7, 6, 5, 4, 3, 2, 1);
            HIGHT_ENC(18, 7, 6, 5, 4, 3, 2, 1, 0);
            HIGHT_ENC(19, 6, 5, 4, 3, 2, 1, 0, 7);
            HIGHT_ENC(20, 5, 4, 3, 2, 1, 0, 7, 6);
            HIGHT_ENC(21, 4, 3, 2, 1, 0, 7, 6, 5);
            HIGHT_ENC(22, 3, 2, 1, 0, 7, 6, 5, 4);
            HIGHT_ENC(23, 2, 1, 0, 7, 6, 5, 4, 3);
            HIGHT_ENC(24, 1, 0, 7, 6, 5, 4, 3, 2);
            HIGHT_ENC(25, 0, 7, 6, 5, 4, 3, 2, 1);
            HIGHT_ENC(26, 7, 6, 5, 4, 3, 2, 1, 0);
            HIGHT_ENC(27, 6, 5, 4, 3, 2, 1, 0, 7);
            HIGHT_ENC(28, 5, 4, 3, 2, 1, 0, 7, 6);
            HIGHT_ENC(29, 4, 3, 2, 1, 0, 7, 6, 5);
            HIGHT_ENC(30, 3, 2, 1, 0, 7, 6, 5, 4);
            HIGHT_ENC(31, 2, 1, 0, 7, 6, 5, 4, 3);
            HIGHT_ENC(32, 1, 0, 7, 6, 5, 4, 3, 2);
            HIGHT_ENC(33, 0, 7, 6, 5, 4, 3, 2, 1);

            targetArray[1] = (byte)(temporaryArray[2] & 0xff);
            targetArray[3] = (byte)(temporaryArray[4] & 0xff);
            targetArray[5] = (byte)(temporaryArray[6] & 0xff);
            targetArray[7] = (byte)(temporaryArray[0] & 0xff);

            targetArray[0] = (byte)((temporaryArray[1] + this.scheduleKeyArray[4]) & 0xff);
            targetArray[2] = (byte)((temporaryArray[3] ^ this.scheduleKeyArray[5]) & 0xff);
            targetArray[4] = (byte)((temporaryArray[5] + this.scheduleKeyArray[6]) & 0xff);
            targetArray[6] = (byte)((temporaryArray[7] ^ this.scheduleKeyArray[7]) & 0xff);
        }

        #endregion
        #region 블럭 복호화하기 - DecryptBlock(sourceArray, targetArray)

        /// <summary>
        /// 블럭 복호화하기
        /// </summary>
        /// <param name="sourceArray">소스 배열</param>
        /// <param name="targetArray">타겟 배열</param>
        private void DecryptBlock(byte[] sourceArray, byte[] targetArray)
        {
            byte[] temporaryArray = new byte[8];

            temporaryArray[2] = sourceArray[1];
            temporaryArray[4] = sourceArray[3];
            temporaryArray[6] = sourceArray[5];
            temporaryArray[0] = sourceArray[7];

            void HIGHT_DEC(int k, int i0, int i1, int i2, int i3, int i4, int i5, int i6, int i7)
            {
                temporaryArray[i1] = (byte)((temporaryArray[i1] - (this.hightF1Array[temporaryArray[i2]] ^ this.scheduleKeyArray[4 * k + 2])) & 0xff);
                temporaryArray[i3] = (byte)((temporaryArray[i3] ^ (this.hightF0Array[temporaryArray[i4]] + this.scheduleKeyArray[4 * k + 1])) & 0xff);
                temporaryArray[i5] = (byte)((temporaryArray[i5] - (this.hightF1Array[temporaryArray[i6]] ^ this.scheduleKeyArray[4 * k + 0])) & 0xff);
                temporaryArray[i7] = (byte)((temporaryArray[i7] ^ (this.hightF0Array[temporaryArray[i0]] + this.scheduleKeyArray[4 * k + 3])) & 0xff);
            }

            temporaryArray[1] = (byte)(sourceArray[0] - this.scheduleKeyArray[4]);
            temporaryArray[3] = (byte)(sourceArray[2] ^ this.scheduleKeyArray[5]);
            temporaryArray[5] = (byte)(sourceArray[4] - this.scheduleKeyArray[6]);
            temporaryArray[7] = (byte)(sourceArray[6] ^ this.scheduleKeyArray[7]);

            HIGHT_DEC(33, 7, 6, 5, 4, 3, 2, 1, 0);
            HIGHT_DEC(32, 0, 7, 6, 5, 4, 3, 2, 1);
            HIGHT_DEC(31, 1, 0, 7, 6, 5, 4, 3, 2);
            HIGHT_DEC(30, 2, 1, 0, 7, 6, 5, 4, 3);
            HIGHT_DEC(29, 3, 2, 1, 0, 7, 6, 5, 4);
            HIGHT_DEC(28, 4, 3, 2, 1, 0, 7, 6, 5);
            HIGHT_DEC(27, 5, 4, 3, 2, 1, 0, 7, 6);
            HIGHT_DEC(26, 6, 5, 4, 3, 2, 1, 0, 7);
            HIGHT_DEC(25, 7, 6, 5, 4, 3, 2, 1, 0);
            HIGHT_DEC(24, 0, 7, 6, 5, 4, 3, 2, 1);
            HIGHT_DEC(23, 1, 0, 7, 6, 5, 4, 3, 2);
            HIGHT_DEC(22, 2, 1, 0, 7, 6, 5, 4, 3);
            HIGHT_DEC(21, 3, 2, 1, 0, 7, 6, 5, 4);
            HIGHT_DEC(20, 4, 3, 2, 1, 0, 7, 6, 5);
            HIGHT_DEC(19, 5, 4, 3, 2, 1, 0, 7, 6);
            HIGHT_DEC(18, 6, 5, 4, 3, 2, 1, 0, 7);
            HIGHT_DEC(17, 7, 6, 5, 4, 3, 2, 1, 0);
            HIGHT_DEC(16, 0, 7, 6, 5, 4, 3, 2, 1);
            HIGHT_DEC(15, 1, 0, 7, 6, 5, 4, 3, 2);
            HIGHT_DEC(14, 2, 1, 0, 7, 6, 5, 4, 3);
            HIGHT_DEC(13, 3, 2, 1, 0, 7, 6, 5, 4);
            HIGHT_DEC(12, 4, 3, 2, 1, 0, 7, 6, 5);
            HIGHT_DEC(11, 5, 4, 3, 2, 1, 0, 7, 6);
            HIGHT_DEC(10, 6, 5, 4, 3, 2, 1, 0, 7);
            HIGHT_DEC( 9, 7, 6, 5, 4, 3, 2, 1, 0);
            HIGHT_DEC( 8, 0, 7, 6, 5, 4, 3, 2, 1);
            HIGHT_DEC( 7, 1, 0, 7, 6, 5, 4, 3, 2);
            HIGHT_DEC( 6, 2, 1, 0, 7, 6, 5, 4, 3);
            HIGHT_DEC( 5, 3, 2, 1, 0, 7, 6, 5, 4);
            HIGHT_DEC( 4, 4, 3, 2, 1, 0, 7, 6, 5);
            HIGHT_DEC( 3, 5, 4, 3, 2, 1, 0, 7, 6);
            HIGHT_DEC( 2, 6, 5, 4, 3, 2, 1, 0, 7);

            targetArray[1] = (byte)(temporaryArray[1] & 0xff);
            targetArray[3] = (byte)(temporaryArray[3] & 0xff);
            targetArray[5] = (byte)(temporaryArray[5] & 0xff);
            targetArray[7] = (byte)(temporaryArray[7] & 0xff);

            targetArray[0] = (byte)((temporaryArray[0] - this.scheduleKeyArray[0]) & 0xff);
            targetArray[2] = (byte)((temporaryArray[2] ^ this.scheduleKeyArray[1]) & 0xff);
            targetArray[4] = (byte)((temporaryArray[4] - this.scheduleKeyArray[2]) & 0xff);
            targetArray[6] = (byte)((temporaryArray[6] ^ this.scheduleKeyArray[3]) & 0xff);
        }

        #endregion
    }
}

 

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▶ Program.cs

using System;
using System.Text;

namespace TestProject
{
    /// <summary>
    /// 프로그램
    /// </summary>
    class Program
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Static
        //////////////////////////////////////////////////////////////////////////////// Private

        #region 데이터 출력하기 - PrintData(sourceArray)

        /// <summary>
        /// 데이터 출력하기
        /// </summary>
        /// <param name="sourceArray">소스 배열</param>
        private static void PrintData(byte[] sourceArray)
        {
            for(int i = 0; i < sourceArray.Length; i++)
            {
                Console.Write($"{sourceArray[i]:X2}");

                if(i < sourceArray.Length - 1)
                {
                    Console.Write(",");
                }
                else
                {
                    Console.WriteLine();
                }
            }
        }

        #endregion

        #region 프로그램 시작하기 - Main()

        /// <summary>
        /// 프로그램 시작하기
        /// </summary>
        private static void Main()
        {
            byte[] userKeyArray =
            {
                0x88, 0xe3, 0x4f, 0x8f, 0x08, 0x17, 0x79, 0xf1,
                0xe9, 0xf3, 0x94, 0x37, 0x0a, 0xd4, 0x05, 0x89
            };

            HIGHTECB ecb = new HIGHTECB(userKeyArray);

            string plainText = "테스트 문자열";

            Console.WriteLine($"평문 텍스트        : {plainText}");

            byte[] plainByteArray = Encoding.UTF8.GetBytes(plainText);

            Console.Write("평문 바이트 배열   : ");

            PrintData(plainByteArray);

            byte[] encryptedByteArray = ecb.Encrypt(plainByteArray);

            Console.Write("암호화 바이트 배열 : ");

            PrintData(encryptedByteArray);

            byte[] decryptedByteArray = ecb.Decrypt(encryptedByteArray);

            Console.Write("복호화 바이트 배열 : ");

            PrintData(decryptedByteArray);

            string decryptedText = Encoding.UTF8.GetString(decryptedByteArray);

            Console.WriteLine($"복호화 텍스트      : {decryptedText}");
        }

        #endregion
    }
}
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