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.Net 对RSA加密结果跟JAVA加密结果不一致问题处理

发布时间 2023-07-19 17:26:53作者: WantRemake
string publicRsaKey = "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC6UCsvO/M/Q51ydlxvuvwy8W9yXkAWLLiG5eA2Duha9cr/XoWrQcETf7PRMNYaQs616PGhj0tnPfxfDltmeqTJQf8rHNxevIZ9nQ0N0/8PIlVszubpMyAHnEis2OLMnLENGyepAlabFGDMDPzRpf0ibL0Q/R15BuTzII5gunzAbwIDAQAB";

string RsaEncrypt(string value, bool usePkcs8 = false)
{
    if (string.IsNullOrEmpty(value)) return value;

    RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(2048);
    rsa.FromXmlString(RSAPublicKeyJava2DotNet(publicRsaKey));//将公钥导入到RSA对象中，准备加密；
    var buffer = Encoding.UTF8.GetBytes(value);
    buffer = rsa.Encrypt(buffer, false);
    return Convert.ToBase64String(buffer);
}

/***************以下是java提供的公私钥转成.net公私钥XML的方式*************************************/
/// <summary> 
/// RSA公钥格式转换，java->.net
/// </summary>
/// <param name="publicKey">java生成的公钥</param>
/// <returns></returns>
string RSAPublicKeyJava2DotNet(string publicKey)
{
    RsaKeyParameters publicKeyParam = (RsaKeyParameters)PublicKeyFactory.CreateKey(Convert.FromBase64String(publicKey));
    return string.Format("<RSAKeyValue><Modulus>{0}</Modulus><Exponent>{1}</Exponent></RSAKeyValue>",
    Convert.ToBase64String(publicKeyParam.Modulus.ToByteArrayUnsigned()),
    Convert.ToBase64String(publicKeyParam.Exponent.ToByteArrayUnsigned()));
}