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using System;
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using System.Collections.Generic;
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using System.Security.Cryptography;
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using System.Text;
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using BP.DA;
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namespace BP.GPM
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{
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/// <summary>
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/// 加密类
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/// </summary>
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public class Crypto
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{
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/// <summary>
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/// 加密字符串
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/// </summary>
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/// <param name="encryptString">传入加密字符串</param>
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/// <returns>加密后字符</returns>
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public static string EncryptString(string encryptString)
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{
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string strEncrypt = encryptString;
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if (DataType.IsNullOrEmpty(encryptString)) return encryptString;
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strEncrypt = Crypto.MD5_Encrypt(strEncrypt);
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strEncrypt = Crypto.MD5_Encrypt(strEncrypt);
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return strEncrypt.ToUpper();
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}
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/// <summary>
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/// 使用指定的编码将字符串散列
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/// </summary>
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/// <param name="encryptString">要散列的字符串</param>
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/// <returns>散列后的字符串</returns>
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public static string MD5_Encrypt(string encryptString)
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{
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System.Security.Cryptography.MD5 md5 = new System.Security.Cryptography.MD5CryptoServiceProvider();
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byte[] source = md5.ComputeHash(Encoding.Default.GetBytes(encryptString));
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StringBuilder sBuilder = new StringBuilder();
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for (int i = 0; i < source.Length; i++)
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{
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sBuilder.Append(source[i].ToString("X2"));
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}
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return sBuilder.ToString();
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}
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//SHA1 加密 （HASH算法没有解密）
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/// <summary>
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/// 利用SHA1加密一个字符串
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/// </summary>
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public static string SHA1_Encrypt(string encryptString)
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{
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byte[] StrRes = Encoding.Default.GetBytes(encryptString);
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HashAlgorithm iSHA = new SHA1CryptoServiceProvider();
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StrRes = iSHA.ComputeHash(StrRes);
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StringBuilder EnText = new StringBuilder();
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foreach (byte iByte in StrRes)
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{
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EnText.AppendFormat("{0:x2}", iByte);
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}
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return EnText.ToString();
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}
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}
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}
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