java/php/c#版rsa签名以及java验签实现openssl生成
来源:互联网 发布:java 构建工具有哪些 编辑:程序博客网 时间:2024/06/06 05:12
原文:http://blog.csdn.net/zaocha321/article/details/52221316
在开放平台领域,需要给isv提供sdk,签名是Sdk中需要提供的功能之一。由于isv使用的开发语言不是单一的,因此sdk需要提供多种语言的版本。譬如java、php、c#。另外,在电子商务尤其是支付领域,对安全性的要求比较高,所以会采用非对称密钥RSA
本文主要介绍如何基于java、php、c#在客户端使用rsa签名,然后在服务端使用Java验签。 基于openssl生成RSA公私钥对a)从网上下载openssl工具:http://www.slproweb.com/products/Win32OpenSSL.html b)生成私钥进入到openssl的bin目录下,执行以下命令:openssl genrsa -out rsa_private_key.pem 1024会在bin目录下看到新生成的私钥文件rsa_private_key.pem,文件内容如下:
- -----BEGIN RSA PRIVATE KEY-----
- MIICXgIBAAKBgQDtd1lKsX6ylsAEWFi7E/ut8krJy9PQ7sGYKhIm9TvIdZiq5xzy
- aw8NOLzKZ1k486MePYG4tSuoaxSbwuPLwVUzYFvnUZo7aWCIGKn16UWTM4nxc/+d
- wce+bhcKrlLbTWi8l580LTE7GxclTh8z7gHq59ivhaoGbK7FNxlUfB4TSQIDAQAB
- AoGBAIgTk0x1J+hI8KHMypPxoJCOPoMi1S9uEewTd7FxaB+4G5Mbuv/Dj62A7NaD
- oKI9IyUqE9L3ppvtOLMFXCofkKU0p4j7MEJdZ+CjVvgextkWa80nj/UZiM1oOL6Y
- HwH4ZtPtY+pFCTK1rdn3+070qBB9tnVntbN/jq0Ld7f0t7UNAkEA9ryI0kxJL9Pu
- pO9NEeWuCUo4xcl9x/M9+mtkfY3VoDDDV1E/eUjmoTfANYwrjcddiQrO0MLyEdoo
- tiLpN77qOwJBAPZhtv/+pqMVTrLxWnVKLZ4ZVTPPgJQQkFdhWwYlz7oKzB3VbQRt
- /jLFXUyCN2eCP7rglrXnaz7AYBftF0ajHEsCQQDDNfkeQULqN0gpcDdOwKRIL1Pp
- kHgWmWlg1lTETVJGEi6Kx/prL/VgeiZ1dzgCTUjAoy9r1cEFxM/PAqH3+/F/AkEA
- zsTCp6Q2hLblDRewKq7OCdiIwKpr5dbgy/RQR6CD7EYTdxYeH5GPu1wXKJY/mQae
- JV9GG/LS9h7MhkfbONS6cQJAdBEb5vloBDLcSQFDQO/VZ9SKFHCmHLXluhhIizYK
- Gzgf3OXEGNDSAC3qy+ZTnLd3N5iYrVbK52UoiLOLhhNMqA==
- -----END RSA PRIVATE KEY-----
c)生成公钥在bin目录下,执行以下命令:openssl rsa -in rsa_private_key.pem -pubout -out rsa_public_key.pem会在bin目录下看到新生成的公钥文件rsa_public_key.pem,文件内容如下:- -----BEGIN PUBLIC KEY-----
- MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDtd1lKsX6ylsAEWFi7E/ut8krJ
- y9PQ7sGYKhIm9TvIdZiq5xzyaw8NOLzKZ1k486MePYG4tSuoaxSbwuPLwVUzYFvn
- UZo7aWCIGKn16UWTM4nxc/+dwce+bhcKrlLbTWi8l580LTE7GxclTh8z7gHq59iv
- haoGbK7FNxlUfB4TSQIDAQAB
- -----END PUBLIC KEY-----
2. 客户端签名 2.1 java版签名实现-
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- public String rsaSign(String content, String privateKey, String charset) throws SignatureException {
- try {
- PrivateKey priKey = getPrivateKeyFromPKCS8("RSA", new ByteArrayInputStream(privateKey.getBytes()));
-
- Signature signature = Signature.getInstance("SHA1WithRSA");
- signature.initSign(priKey);
- if (StringUtils.isEmpty(charset)) {
- signature.update(content.getBytes());
- } else {
- signature.update(content.getBytes(charset));
- }
-
- byte[] signed = signature.sign();
- return new String(Base64.encodeBase64(signed));
- } catch (Exception e) {
- throw new SignatureException("RSAcontent = " + content + "; charset = " + charset, e);
- }
- }
-
- public PrivateKey getPrivateKeyFromPKCS8(String algorithm, InputStream ins) throws Exception {
- if (ins == null || StringUtils.isEmpty(algorithm)) {
- return null;
- }
-
- KeyFactory keyFactory = KeyFactory.getInstance(algorithm);
- byte[] encodedKey = StreamUtil.readText(ins).getBytes();
- encodedKey = Base64.decodeBase64(encodedKey);
- return keyFactory.generatePrivate(new PKCS8EncodedKeySpec(encodedKey));
- }
注意:参数privateKey是Pem私钥文件中去除头(-----BEGIN RSA PRIVATE KEY-----)和尾(-----END RSA PRIVATE KEY-----)以及换行符后的字符串。如果签名报以下错误:java.security.spec.InvalidKeySpecException: java.security.InvalidKeyException: IOException : algid parse error, not a sequence则说明rsa私钥的格式不是pksc8格式,需要使用以下命令转换一下:openssl pkcs8 -topk8 -inform PEM -in rsa_private_key.pem -outform PEM -nocrypt然后再提取去除头和尾以及换行符后字符串作为java版用的rsa私钥 2.2 php签名实现- function sign($content, $rsaPrivateKeyPem) {
- $priKey = file_get_contents($rsaPrivateKeyPem);
- $res = openssl_get_privatekey($priKey);
- openssl_sign($content, $sign, $res);
- openssl_free_key($res);
- $sign = base64_encode($sign);
- return $sign;
- }
注意:$rsaPrivateKeyPem为pem私钥文件路径 2.3 c#签名实现(引用了国外某位仁兄的方案)- using System;
- using System.Text;
- using System.Security.Cryptography;
- using System.Web;
- using System.IO;
-
- namespace Aop.Api.Util
- {
-
-
-
- public class RSAUtil
- {
-
- public static string RSASign(string data, string privateKeyPem)
- {
- RSACryptoServiceProvider rsaCsp = LoadCertificateFile(privateKeyPem);
- byte[] dataBytes = Encoding.UTF8.GetBytes(data);
- byte[] signatureBytes = rsaCsp.SignData(dataBytes, "SHA1");
- return Convert.ToBase64String(signatureBytes);
- }
-
- private static byte[] GetPem(string type, byte[] data)
- {
- string pem = Encoding.UTF8.GetString(data);
- string header = String.Format("-----BEGIN {0}-----\\n", 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 static 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 static RSACryptoServiceProvider DecodeRSAPrivateKey(byte[] privkey)
- {
- byte[] MODULUS, E, D, P, Q, DP, DQ, IQ;
-
-
- MemoryStream mem = new MemoryStream(privkey);
- BinaryReader binr = new BinaryReader(mem);
- byte bt = 0;
- ushort twobytes = 0;
- int elems = 0;
- try
- {
- twobytes = binr.ReadUInt16();
- if (twobytes == 0x8130)
- binr.ReadByte();
- else if (twobytes == 0x8230)
- binr.ReadInt16();
- else
- return null;
-
- twobytes = binr.ReadUInt16();
- if (twobytes != 0x0102)
- return null;
- bt = binr.ReadByte();
- if (bt != 0x00)
- return null;
-
-
-
- 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);
-
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- 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 static int GetIntegerSize(BinaryReader binr)
- {
- byte bt = 0;
- byte lowbyte = 0x00;
- byte highbyte = 0x00;
- int count = 0;
- bt = binr.ReadByte();
- if (bt != 0x02)
- return 0;
- bt = binr.ReadByte();
-
- if (bt == 0x81)
- count = binr.ReadByte();
- else
- if (bt == 0x82)
- {
- highbyte = binr.ReadByte();
- lowbyte = binr.ReadByte();
- byte[] modint = { lowbyte, highbyte, 0x00, 0x00 };
- count = BitConverter.ToInt32(modint, 0);
- }
- else
- {
- count = bt;
- }
-
- while (binr.ReadByte() == 0x00)
- {
- count -= 1;
- }
- binr.BaseStream.Seek(-1, SeekOrigin.Current);
- return count;
- }
- }
- }
注:privateKeyPem为私钥文件路径 3. 服务端java验签/**
* rsa验签
*
* @param content 被签名的内容
* @param sign 签名后的结果
* @param publicKey rsa公钥
* @param charset 字符集
* @return 验签结果
* @throws SignatureException 验签失败,则抛异常
*/
boolean doCheck(String content, String sign, String publicKey, String charset) throws SignatureException {
try {
PublicKey pubKey = getPublicKeyFromX509("RSA", new ByteArrayInputStream(publicKey.getBytes()));
Signature signature = Signature.getInstance("SHA1WithRSA");
signature.initVerify(pubKey);
signature.update(getContentBytes(content, charset));
return signature.verify(Base64.decodeBase64(sign.getBytes()));
} catch (Exception e) {
throw new SignatureException("RSA验证签名[content = " + content + "; charset = " + charset
+ "; signature = " + sign + "]发生异常!", e);
}
}
private PublicKey getPublicKeyFromX509(String algorithm, InputStream ins) throws NoSuchAlgorithmException {
try {
KeyFactory keyFactory = KeyFactory.getInstance(algorithm);
StringWriter writer = new StringWriter();
StreamUtil.io(new InputStreamReader(ins), writer);
byte[] encodedKey = writer.toString().getBytes();
// 先base64解码
encodedKey = Base64.decodeBase64(encodedKey);
return keyFactory.generatePublic(new X509EncodedKeySpec(encodedKey));
} catch (IOException ex) {
// 不可能发生
} catch (InvalidKeySpecException ex) {
// 不可能发生
}
return null;
}
private byte[] getContentBytes(String content, String charset) throws UnsupportedEncodingException {
if (StringUtil.isEmpty(charset)) {
return content.getBytes();
}
return content.getBytes(charset);
}
注意:参数publicKey是Pem公钥文件中去除头(-----BEGIN RSA PRIVATE KEY-----)和尾(-----END RSA PRIVATE KEY-----)以及换行符后的字符串。