114 lines
4.7 KiB
C#
114 lines
4.7 KiB
C#
using System;
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namespace Aop.Api.Util.Asymmetric
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{
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/// <summary>
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/// 非对称加密算法
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/// </summary>
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public abstract class BaseAsymmetricEncryptor : IAsymmetricEncryptor
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{
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/// <summary>
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/// 默认字符集编码。现在都推荐使用UTF-8，之前默认是GBK，保持向下兼容性
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/// </summary>
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private static readonly string DEFAULT_CHARSET = "GBK";
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public string Decrypt(string cipherTextBase64, string charset, string privateKey)
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{
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try
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{
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ArgumentValidator.CheckNotNull(cipherTextBase64, "密文不可为Null");
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ArgumentValidator.CheckArgument(!String.IsNullOrEmpty(privateKey), "私钥不可为空");
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if (String.IsNullOrEmpty(charset))
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{
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charset = DEFAULT_CHARSET;
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}
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return DoDecrypt(cipherTextBase64, charset, privateKey);
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}
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catch (Exception ex)
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{
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String errorMessage = GetAsymmetricType() + "非对称解密遭遇异常，请检查私钥格式是否正确。" + ex.Message +
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" cipherTextBase64=" + cipherTextBase64 + "，charset=" + charset + "，privateKeySize=" + privateKey.Length;
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Console.WriteLine(errorMessage);
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throw new AopException(errorMessage, ex);
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}
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}
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public string Encrypt(string plainText, string charset, string publicKey)
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{
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try
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{
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ArgumentValidator.CheckNotNull(plainText, "密文不可为Null");
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ArgumentValidator.CheckArgument(!String.IsNullOrEmpty(publicKey), "公钥不可为空");
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if (String.IsNullOrEmpty(charset))
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{
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charset = DEFAULT_CHARSET;
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}
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return DoEncrypt(plainText, charset, publicKey);
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}
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catch (Exception ex)
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{
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String errorMessage = GetAsymmetricType() + "非对称解密遭遇异常，请检查公钥格式是否正确。" + ex.Message +
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" plainText=" + plainText + "，charset=" + charset + "，publicKey=" + publicKey;
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Console.WriteLine(errorMessage);
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throw new AopException(errorMessage, ex);
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}
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}
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public string Sign(string content, string charset, string privateKey)
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{
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try
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{
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ArgumentValidator.CheckNotNull(content, "待签名内容不可为Null");
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ArgumentValidator.CheckArgument(!String.IsNullOrEmpty(privateKey), "私钥不可为空");
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if (String.IsNullOrEmpty(charset))
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{
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charset = DEFAULT_CHARSET;
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}
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return DoSign(content, charset, privateKey);
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}
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catch (Exception ex)
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{
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String errorMessage = GetAsymmetricType() + "签名遭遇异常，请检查私钥格式是否正确。" + ex.Message +
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" content=" + content + "，charset=" + charset + "，privateKeySize=" + privateKey.Length;
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Console.WriteLine(errorMessage);
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throw new AopException(errorMessage, ex);
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}
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}
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public bool Verify(string content, string charset, string publicKey, string sign)
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{
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try
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{
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ArgumentValidator.CheckNotNull(content, "待验签内容不可为Null");
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ArgumentValidator.CheckArgument(!String.IsNullOrEmpty(publicKey), "公钥不可为空");
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ArgumentValidator.CheckArgument(!String.IsNullOrEmpty(sign), "签名串不可为空");
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if (String.IsNullOrEmpty(charset))
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{
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charset = DEFAULT_CHARSET;
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}
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return DoVerify(content, charset, publicKey, sign);
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}
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catch (Exception ex)
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{
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String errorMessage = GetAsymmetricType() + "验签遭遇异常，请检查公钥格式是否正确。" + ex.Message +
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" content=" + content + "，charset=" + charset + "，publicKey=" + publicKey + "，sign=" + sign;
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Console.WriteLine(errorMessage);
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throw new AopException(errorMessage, ex);
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}
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}
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protected abstract string DoDecrypt(string cipherTextBase64, string charset, string privateKey);
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protected abstract string DoEncrypt(string plainText, string charset, string publicKey);
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protected abstract string DoSign(string content, string charset, string privateKey);
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protected abstract bool DoVerify(string content, string charset, string publicKey, string sign);
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protected abstract string GetAsymmetricType();
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}
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} |