PHP，C# 和JAVARSA签名及验签

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加密解密

这个功能网上搜了好多资料。贡献一下，转载须注明并对卓二妹的无私奉献表示感谢。

1）签名算法使用SHA1withRSA。

2）签名后的数据位base64编码的密文字符串。

3）三个环境进行签名的私钥的格式不同，需要openssl工具进行转换。

——————————————————————————————————————————

JAVA签名：

1）从包含公私钥的pfx证书中取得.key私钥：

F:\openssl-0.9.8k_WIN32\bin>openssl pkcs12 -in f:\certs\zhuo.pfx -out f:\certs\zhuo.pem
Enter Import Password:（输入导出时的密码）
MAC verified OK
Enter PEM pass phrase:（长度至少为4位的pem证书密码）
Verifying - Enter PEM pass phrase:（确认一次pem证书密码）
 
F:\openssl-0.9.8k_WIN32\bin>openssl pkcs8 -topk8 -inform PEM -outform DER -in f:\certs\zhuo.pem -out f:\certs\zhuo_der.key -nocrypt
Enter pass phrase for f:\certs\zhuo.pem:（输入pem证书密码）

该步骤生成的.key文件即为JAVA签名所需私钥文件。

2）生成公钥：直接从IE中导出X.509格式二进制编码的cer为后缀的公钥证书即可。

3）签名验签：

//签名：
/**
	 * 
	 * 函数功能说明： 签名数据
	 * created by zhuoyueping 2013-8-17
	 * modified by zhuoyueping 2013-8-17 
	 * 修改内容说明： 
	 * @param @param content:签名原文
	 * @param @param keyfile：私钥文件.key路径
	 * @param @return
	 * @param @throws Exception     
	 * @return String ：base64签名
	 * @throws
	 */
	public String sign(String content, String keyfile) throws Exception {
		File file = new File(keyfile); //keyfile key文件的地址
		FileInputStream in;
		in = new FileInputStream(file);

		ByteArrayOutputStream bout = new ByteArrayOutputStream();
		byte[] tmpbuf = new byte[1024];
		int count = 0;
		while ((count = in.read(tmpbuf)) != -1) {
			bout.write(tmpbuf, 0, count);
			tmpbuf = new byte[1024];
		}
		in.close();

		KeyFactory keyFactory = KeyFactory.getInstance("RSA");
		EncodedKeySpec privateKeySpec = new PKCS8EncodedKeySpec(bout
				.toByteArray());
		RSAPrivateKey privateKey = (RSAPrivateKey) keyFactory
				.generatePrivate(privateKeySpec);

		Signature dsa = Signature.getInstance("SHA1withRSA"); //采用SHA1withRSA加密
		dsa.initSign(privateKey);
		dsa.update(content.getBytes("UTF-8")); //voucher需要加密的String必须变成byte类型的
		byte[] sig = dsa.sign();

		String rtnValue = new String(Base64.encode(sig));

		return rtnValue;
	}

	/**
	 * <p>
	 * 验证签名
	 * </p>
	 *
	 * @param data 原文字节
	 * @param sign 数据签名[BASE64]
	 * @param certificatePath 证书存储路径
	 * @return
	 * @throws Exception
	 */
public static boolean verifySign(byte[] data, String sign,
			String certificatePath) throws Exception {
		// 获得证书
		X509Certificate x509Certificate = (X509Certificate) getCertificate(certificatePath);
		return verifySign(data,sign,x509Certificate);
	}

private static boolean verifySign(byte[] data, String sign, X509Certificate x509Certificate)throws Exception {
		PublicKey publicKey = x509Certificate.getPublicKey();
		Signature signature = Signature.getInstance(x509Certificate
				.getSigAlgName());
		signature.initVerify(publicKey);
		signature.update(data);
		return signature.verify(Base64.decode(sign.getBytes()));
	}

C#签名：

1）从包含公私钥的pfx证书中取得.key私钥：

F:\openssl-0.9.8k_WIN32\bin> openssl rsa -in d:\\certs\\zhuo.pfx -nocerts -nodes -out d:\\certs\\zhuo.key

该步骤生成的.key文件即为C#签名所需私钥文件。

2）公钥生成：于java方式相同，都是二进制格式的x509证书3）签名及验签：

using System;
using System.Text;
using System.Security.Cryptography;
using System.Web;
using System.IO;
using System.Security.Cryptography.X509Certificates;  

namespace Safe
{
    public class SafeUtil
    {
        /// <summary>
        /// 验证签名
        /// </summary>
        /// <param name="OriginalString">原文：UTF8编码</param>
        /// <param name="SignatureString">签名：base64编码的字节</param>
        /// <param name="publicKeyPath">公钥路径</param>
        /// <returns> 验签结果</returns>
        public bool Verify(String OriginalString, String SignatureString,String publicKeyPath)
        {
               //将base64签名数据转码为字节 
                byte[] signedBase64 = Convert.FromBase64String(SignatureString);
                byte[] orgin = Encoding.UTF8.GetBytes(OriginalString);
 
                X509Certificate2 x509_Cer1 = new X509Certificate2(publicKeyPath);

                RSACryptoServiceProvider oRSA = new RSACryptoServiceProvider();
                oRSA.FromXmlString(x509_Cer1.PublicKey.Key.ToXmlString(false));

                bool bVerify = oRSA.VerifyData(orgin, "SHA1", signedBase64);
                return bVerify;

        }

        /// <summary>
        /// 验证签名
        /// </summary>
        /// <param name="data">原文：UTF8编码</param>
        /// <param name="privateKeyPath">证书路径：D:/certs/mycert.key</param>
        /// <returns> 验签</returns>
        public string Sign(string data, string privateKeyPath)
        {
            RSACryptoServiceProvider rsaCsp = LoadCertificateFile(privateKeyPath);
            byte[] dataBytes = Encoding.UTF8.GetBytes(data);
            byte[] signatureBytes = rsaCsp.SignData(dataBytes, "SHA1");
            return Convert.ToBase64String(signatureBytes);
        }

        private  byte[] GetPem(string type, byte[] data)
        {
            string pem = Encoding.UTF8.GetString(data);
            string header = String.Format("-----BEGIN {0}-----", type);
            string footer = String.Format("-----END {0}-----", type);
            int start = pem.IndexOf(header) + header.Length;
            int end = pem.IndexOf(footer, start);
 
            string base64 = pem.Substring(start, (end - start));
   
            return Convert.FromBase64String(base64);
        }

        private  RSACryptoServiceProvider LoadCertificateFile(string filename)
        {
            using (System.IO.FileStream fs = System.IO.File.OpenRead(filename))
            {
                byte[] data = new byte[fs.Length];
                byte[] res = null;
                fs.Read(data, 0, data.Length);
                if (data[0] != 0x30)
                {
                    res = GetPem("RSA PRIVATE KEY", data);
                }
                try
                {
                    RSACryptoServiceProvider rsa = DecodeRSAPrivateKey(res);
                    return rsa;
                }
                catch (Exception ex)
                {
                }
                return null;
            }
        }

        private  RSACryptoServiceProvider DecodeRSAPrivateKey(byte[] privkey)
        {
            byte[] MODULUS, E, D, P, Q, DP, DQ, IQ;
             
            // --------- Set up stream to decode the asn.1 encoded RSA private key ------  
            MemoryStream mem = new MemoryStream(privkey);
            BinaryReader binr = new BinaryReader(mem);  //wrap Memory Stream with BinaryReader for easy reading  
            byte bt = 0;
            ushort twobytes = 0;
            int elems = 0;
            try
            {
                twobytes = binr.ReadUInt16();
                if (twobytes == 0x8130) //data read as little endian order (actual data order for Sequence is 30 81)  
                    binr.ReadByte();    //advance 1 byte  
                else if (twobytes == 0x8230)
                    binr.ReadInt16();    //advance 2 bytes  
                else
                    return null;

                twobytes = binr.ReadUInt16();
                if (twobytes != 0x0102) //version number  
                    return null;
                bt = binr.ReadByte();
                if (bt != 0x00)
                    return null;


                //------ all private key components are Integer sequences ----  
                elems = GetIntegerSize(binr);
                MODULUS = binr.ReadBytes(elems);

                elems = GetIntegerSize(binr);
                E = binr.ReadBytes(elems);

                elems = GetIntegerSize(binr);
                D = binr.ReadBytes(elems);

                elems = GetIntegerSize(binr);
                P = binr.ReadBytes(elems);

                elems = GetIntegerSize(binr);
                Q = binr.ReadBytes(elems);

                elems = GetIntegerSize(binr);
                DP = binr.ReadBytes(elems);

                elems = GetIntegerSize(binr);
                DQ = binr.ReadBytes(elems);

                elems = GetIntegerSize(binr);
                IQ = binr.ReadBytes(elems);


                // ------- create RSACryptoServiceProvider instance and initialize with public key -----  
                CspParameters CspParameters = new CspParameters();
                CspParameters.Flags = CspProviderFlags.UseMachineKeyStore;
                RSACryptoServiceProvider RSA = new RSACryptoServiceProvider(1024, CspParameters);
                RSAParameters RSAparams = new RSAParameters();
                RSAparams.Modulus = MODULUS;
                RSAparams.Exponent = E;
                RSAparams.D = D;
                RSAparams.P = P;
                RSAparams.Q = Q;
                RSAparams.DP = DP;
                RSAparams.DQ = DQ;
                RSAparams.InverseQ = IQ;
                RSA.ImportParameters(RSAparams);
                return RSA;
            }
            catch (Exception ex)
            {
                
                return null;
            }
            finally
            {
                binr.Close();
            }
        }

        private  int GetIntegerSize(BinaryReader binr)
        {
            byte bt = 0;
            byte lowbyte = 0x00;
            byte highbyte = 0x00;
            int count = 0;
            bt = binr.ReadByte();
            if (bt != 0x02)     //expect integer  
                return 0;
            bt = binr.ReadByte();

            if (bt == 0x81)
                count = binr.ReadByte();    // data size in next byte  
            else
                if (bt == 0x82)
                {
                    highbyte = binr.ReadByte(); // data size in next 2 bytes  
                    lowbyte = binr.ReadByte();
                    byte[] modint = { lowbyte, highbyte, 0x00, 0x00 };
                    count = BitConverter.ToInt32(modint, 0);
                }
                else
                {
                    count = bt;     // we already have the data size  
                }

            while (binr.ReadByte() == 0x00)
            {   //remove high order zeros in data  
                count -= 1;
            }
            binr.BaseStream.Seek(-1, SeekOrigin.Current);       //last ReadByte wasn't a removed zero, so back up a byte  
            return count;
        }  
    }
}

PHP签名：

1）从包含公私钥的pfx证书中取得.key私钥：于C#的证书一致

2）公钥生成：

F:\openssl-0.9.8k_WIN32\bin>openssl pkcs12 -in f:\certs\zhuo.pfx -out f:\certs\zhuo.pem

3）签名及验签：

/*
签名数据：
data：utf-8编码的订单原文，
privatekeyFile：私钥路径
passphrase：私钥密码
返回：base64转码的签名数据
*/
function sign($data, $privatekeyFile,$passphrase)
{ 
  $signature = '';
	$privatekey = openssl_pkey_get_private(file_get_contents($privatekeyFile), $passphrase);
  $res=openssl_get_privatekey($privatekey);
  openssl_sign($data, $signature, $res);
  openssl_free_key($res);  

  return base64_encode($signature);
}

/*
验证签名：
data：原文
signature：签名
publicKeyPath：公钥路径
返回：签名结果，true为验签成功，false为验签失败
*/
function verity($data, $signature, $publicKeyPath)
{
	$pubKey = file_get_contents('D:/certs/test.pem');
	$res = openssl_get_publickey($pubKey);
	$result = (bool)openssl_verify($data, base64_decode($signature), $res);
	openssl_free_key($res);

	return $result;
}

* PHP需要注意版本和一些包的导入，如果有报错再google了~~

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