59 lines
1.9 KiB
C#
59 lines
1.9 KiB
C#
using System.Security.Cryptography;
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using System.Text;
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namespace LY.App.Common.Cypher
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{
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public class AESCypherUtil
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{
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/// <summary>
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/// AES 加密
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/// </summary>
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/// <param name="str">明文</param>
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/// <param name="key">密钥对</param>
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/// <returns>密文</returns>
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public static string Encrypt(string str, string key, string iv)
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{
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using (var aes = Aes.Create())
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{
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aes.Key = Encoding.UTF8.GetBytes(key);
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aes.IV = Encoding.UTF8.GetBytes(iv);
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aes.Mode = CipherMode.CBC;
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aes.Padding = PaddingMode.PKCS7;
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byte[] strbuffer = Encoding.UTF8.GetBytes(str);
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using (var crytTransform = aes.CreateEncryptor(aes.Key, aes.IV))
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{
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byte[] buffer = crytTransform.TransformFinalBlock(strbuffer, 0, strbuffer.Length);
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return Convert.ToBase64String(buffer, 0, buffer.Length);
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}
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}
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}
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/// <summary>
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/// AES 解密
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/// </summary>
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/// <param name="str">密文</param>
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/// <param name="key">密钥对</param>
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/// <returns>明文</returns>
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public static string Decrypt(string str, string key, string iv)
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{
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using (var aes = Aes.Create())
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{
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aes.Key = Encoding.UTF8.GetBytes(key);
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aes.IV = Encoding.UTF8.GetBytes(iv);
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aes.Mode = CipherMode.CBC;
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aes.Padding = PaddingMode.PKCS7;
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byte[] strbuffer = System.Convert.FromBase64String(str);
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using (var crytTransform = aes.CreateDecryptor(aes.Key, aes.IV))
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{
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byte[] buffer = crytTransform.TransformFinalBlock(strbuffer, 0, strbuffer.Length);
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return Encoding.UTF8.GetString(buffer);
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}
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}
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}
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}
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}
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