/// <summary>
/// 解密
/// </summary>
/// <param name="resData">byte[]类型的加密字符串</param>
/// <param name="privateKey">xml格式的私钥</param>
/// <param name="isOaep">是否使用oaep填充方式和，ture使用oaep，false使用Pkcs1方式</param>
/// <returns>明文</returns>
public static byte[] Decrypt(byte[] resData, string xmlPrivateKey, bool isOaep)
{
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
RSACryptoExtensions.FromXmlString(rsa, xmlPrivateKey);
//rsa.FromXmlString(xmlPrivateKey);
return(rsa.Decrypt(resData, isOaep));
}
/// <summary>
/// 加密
/// </summary>
/// <param name="resData">byte[]类型的需要加密的字符串</param>
/// <param name="publicKey">xml格式的公钥</param>
/// <param name="isOaep">是否使用oaep填充方式和，ture使用oaep，false使用Pkcs1方式</param>
/// <returns>加密后的数据</returns>
public static string Encrypt(byte[] resData, string xmlPublicKey, bool isOaep)
{
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
RSACryptoExtensions.FromXmlString(rsa, xmlPublicKey);
//rsa.FromXmlString(xmlPublicKey);
return(Convert.ToBase64String(rsa.Encrypt(resData, isOaep)));
}
/// <summary>
/// 签名
/// </summary>
/// <param name="content">byte[]类型的待签名字符串</param>
/// <param name="xml格式的privateKey">xml格式的私钥</param>
/// <param name="signAlgorithm">签名算法，SHA256/SHA1</param>
/// <returns>签名后字符串</returns>
public static byte[] Sign(byte[] content, string xmlPrivateKey, string signAlgorithm)
{
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
RSACryptoExtensions.FromXmlString(rsa, xmlPrivateKey);
//rsa.FromXmlString(xmlPrivateKey);
if (Constants.CMBLIFE_SIGN_ALGORITHM_SHA256.Equals(signAlgorithm))
{
return(rsa.SignData(content, new SHA256CryptoServiceProvider()));
}
else if (Constants.CMBLIFE_SIGN_ALGORITHM_SHA1.Equals(signAlgorithm))
{
return(rsa.SignData(content, new SHA1CryptoServiceProvider()));
}
else
{
throw new ArgumentException("签名算法不合法!");
}
}