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Java基于OpenSSL的公私钥对数据进行加解密
使用OpenSSL来生成私钥和公钥
-
验证机器上是否安装openssl
命令:
openssl version -a
[root@node00 test]# openssl version -a OpenSSL 1.0.2k-fips 26 Jan 2017 built on: reproducible build, date unspecified platform: linux-x86_64 options: bn(64,64) md2(int) rc4(16x,int) des(idx,cisc,16,int) idea(int) blowfish(idx) compiler: gcc -I. -I.. -I../include -fPIC -DOPENSSL_PIC -DZLIB -DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H -DKRB5_MIT -m64 -DL_ENDIAN -Wall -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -Wa,--noexecstack -DPURIFY -DOPENSSL_IA32_SSE2 -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_MONT5 -DOPENSSL_BN_ASM_GF2m -DRC4_ASM -DSHA1_ASM -DSHA256_ASM -DSHA512_ASM -DMD5_ASM -DAES_ASM -DVPAES_ASM -DBSAES_ASM -DWHIRLPOOL_ASM -DGHASH_ASM -DECP_NISTZ256_ASM OPENSSLDIR: "/etc/pki/tls" engines: rdrand dynamic [root@node00 test]#
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生成私钥
openssl genrsa -out rsa_private_key.pem 2048
openssl随机生成了一份私钥,加密长度是1024位。加密长度是指理论上最大允许”被加密的信息“长度的限制,也就是明文的长度限制。随着这个参数的增大(比方说2048),允许的明文长度也会增加,但同时也会造成计算复杂度的极速增长。一般推荐的长度就是1024位(128字节)。
查看私钥文件:rsa_private_key.pem,内容都是标准的ASCII字符,开头一行和结尾一行有明显的标记,真正的私钥数据是中间的不规则字符。
[root@node00 test]# cat rsa_private_key.pem -----BEGIN RSA PRIVATE KEY----- MIICXwIBAAKBgQD3g6KX0M0pM5HdC39verZMxDmLyQZ4trDCpmn+DMB3yTf4aVPL dgBHhqiw9bnyOwltqlzSlZyr/8jcwimC2pOg9mP8PT8e5NcoqINkcFYwLAlwGDix TdKLF0+7HcwfIqJPpX+4WRdsBc2r6Tqr2OlrgKCLQsLbMplaRjPnsBqGDwIDAQAB AoGBANTCy64yp1jGYpkfPBEI69G7TzgwuiZj7De2MyBVt9CAIGOhro0TxxO01icf YxKs2uLw8c93GfDj87aIFITN/N1MiwVjF9hTxacYkQ2KKiks2kNv5UjHcfgQVpj3 rfSADJ4NEeV52cp3VHVrF8n+cjvct6boMa7/f6StvfewUxL5AkEA/N8sKmbvTRgM DE+vEI06U0Hv5bsGyppbt964WhCwBhzvHX4SZypcmuu3AkQX60ep9Sz8/0JZcJXr ZEfEs402RQJBAPqTftznOuC7Uoyh+ogyxYJ1mmO4TnTdh5RqTVbC9DUvxtUtUgqP JJRaj+GSoZ+f0+99l1NaqoOtVkq226UmKkMCQQChW1sYV4SdohmWBYbFPgkYtXt6 EUS9JZAfHQxv1DQuQmpGXHsrv3lGFeE6ne7RYHJQE3wA+fqOf+urmqwmkpYtAkEA x5FZZM600e/fWypWwsrNC45mnC1aLzGQnd/cING8de/LSFWEFezTkWRfW6TRHLTK st8v+q8nRyByrabdYLb4yQJBAIruwdUxt9meTuJgN/YkijCt6Jc8+sOAmSep0G5i gcAvSdn7hlRx/jj1FRA5MhSmGmeJdoDlAcWUBaHR/elOedU= -----END RSA PRIVATE KEY-----
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根据私钥生产公钥
openssl rsa -in rsa_private_key.pem -out rsa_public_key.pem -pubout
查看公钥:
[root@node00 test]# cat rsa_public_key.pem -----BEGIN PUBLIC KEY----- MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQD3g6KX0M0pM5HdC39verZMxDmL yQZ4trDCpmn+DMB3yTf4aVPLdgBHhqiw9bnyOwltqlzSlZyr/8jcwimC2pOg9mP8 PT8e5NcoqINkcFYwLAlwGDixTdKLF0+7HcwfIqJPpX+4WRdsBc2r6Tqr2OlrgKCL QsLbMplaRjPnsBqGDwIDAQAB -----END PUBLIC KEY-----
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PKCS#8编码
指明输入私钥文件为rsa_private_key.pem,输出私钥文件为pkcs8_rsa_private_key.pem,不采用任何二次加密(-nocrypt)
openssl pkcs8 -topk8 -in rsa_private_key.pem -out pkcs8_rsa_private_key.pem -nocrypt
查看PKCS#8编码私钥:
[root@node00 test]# cat pkcs8_rsa_private_key.pem -----BEGIN PRIVATE KEY----- MIICeQIBADANBgkqhkiG9w0BAQEFAASCAmMwggJfAgEAAoGBAPeDopfQzSkzkd0L f296tkzEOYvJBni2sMKmaf4MwHfJN/hpU8t2AEeGqLD1ufI7CW2qXNKVnKv/yNzC KYLak6D2Y/w9Px7k1yiog2RwVjAsCXAYOLFN0osXT7sdzB8iok+lf7hZF2wFzavp OqvY6WuAoItCwtsymVpGM+ewGoYPAgMBAAECgYEA1MLLrjKnWMZimR88EQjr0btP ODC6JmPsN7YzIFW30IAgY6GujRPHE7TWJx9jEqza4vDxz3cZ8OPztogUhM383UyL BWMX2FPFpxiRDYoqKSzaQ2/lSMdx+BBWmPet9IAMng0R5XnZyndUdWsXyf5yO9y3 pugxrv9/pK2997BTEvkCQQD83ywqZu9NGAwMT68QjTpTQe/luwbKmlu33rhaELAG HO8dfhJnKlya67cCRBfrR6n1LPz/QllwletkR8SzjTZFAkEA+pN+3Oc64LtSjKH6 iDLFgnWaY7hOdN2HlGpNVsL0NS/G1S1SCo8klFqP4ZKhn5/T732XU1qqg61WSrbb pSYqQwJBAKFbWxhXhJ2iGZYFhsU+CRi1e3oRRL0lkB8dDG/UNC5CakZceyu/eUYV 4Tqd7tFgclATfAD5+o5/66uarCaSli0CQQDHkVlkzrTR799bKlbCys0LjmacLVov MZCd39wg0bx178tIVYQV7NORZF9bpNEctMqy3y/6rydHIHKtpt1gtvjJAkEAiu7B 1TG32Z5O4mA39iSKMK3olzz6w4CZJ6nQbmKBwC9J2fuGVHH+OPUVEDkyFKYaZ4l2 gOUBxZQFodH96U551Q== -----END PRIVATE KEY-----
RSA加密解密工具类
package com.yimen.data.test;
import java.io.*;
import java.security.*;
import java.security.interfaces.RSAPrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import org.bouncycastle.util.encoders.Base64;
import sun.misc.BASE64Decoder;
/**
* 生成私钥:openssl genrsa -out rsa_private_key.pem 1024
* 根据私钥生成公钥:openssl rsa -in rsa_private_key.pem -out rsa_public_key.pem -pubout
* 私钥还不能直接被使用,需要进行PKCS#8编码:openssl pkcs8 -topk8 -in rsa_private_key.pem -out pkcs8_rsa_private_key.pem -nocrypt
* sha1签名 openssl sha1 -sign rsa_private_key.pem -out rsasign.bin tos.txt
* pkcs8_rsa_private_key 私钥
* java可以使用
*/
public class RSAEncrypt {
/**
* 字节数据转字符串专用集合
*/
private static final char[] HEX_CHAR = {'0', '1', '2', '3', '4', '5', '6',
'7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
/**
* 随机生成密钥对
* 生成公私钥的位置
*/
public void genKeyPair(String filePath) {
// KeyPairGenerator类用于生成公钥和私钥对,基于RSA算法生成对象
KeyPairGenerator keyPairGen = null;
try {
keyPairGen = KeyPairGenerator.getInstance("RSA");
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
// 初始化密钥对生成器,密钥大小为96-1024位
keyPairGen.initialize(1024, new SecureRandom());
// 生成一个密钥对,保存在keyPair中
KeyPair keyPair = keyPairGen.generateKeyPair();
// 得到私钥
RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate();
// 得到公钥
RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic();
try {
// 得到公钥字符串
//Base64 base64 = new Base64();
BASE64Encoder base64 = new BASE64Encoder();
String publicKeyString = new String(base64.encode(publicKey.getEncoded()));
// 得到私钥字符串
String privateKeyString = new String(base64.encode(privateKey.getEncoded()));
// 将密钥对写入到文件
FileWriter pubfw = new FileWriter(filePath + "/publicKey.keystore");
FileWriter prifw = new FileWriter(filePath + "/privateKey.keystore");
BufferedWriter pubbw = new BufferedWriter(pubfw);
BufferedWriter pribw = new BufferedWriter(prifw);
pubbw.write(publicKeyString);
pribw.write(privateKeyString);
pubbw.flush();
pubbw.close();
pubfw.close();
pribw.flush();
pribw.close();
prifw.close();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 从字符串中加载公钥
*
* @param publicKeyStr 公钥数据字符串
* @throws Exception 加载公钥时产生的异常
*/
public static RSAPublicKey loadPublicKeyByStr(String publicKeyStr) throws Exception {
try {
BASE64Decoder base64Decoder = new BASE64Decoder();
byte[] buffer = base64Decoder.decodeBuffer(publicKeyStr);
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
X509EncodedKeySpec keySpec = new X509EncodedKeySpec(buffer);
return (RSAPublicKey) keyFactory.generatePublic(keySpec);
} catch (NoSuchAlgorithmException e) {
throw new Exception("无此算法");
} catch (InvalidKeySpecException e) {
throw new Exception("公钥非法");
} catch (IOException e) {
throw new Exception("公钥数据内容读取错误");
} catch (NullPointerException e) {
throw new Exception("公钥数据为空");
}
}
/**
* 从文件中输入流中加载公钥
*
* @param path
* 公钥路径
* @param flag
* true 为hdfs文件系统路径
* @throws Exception
* 加载公钥时产生的异常
*/
public static String loadPublicKeyByFile(String path, boolean flag) throws Exception {
try {
BufferedReader br = null;
if(flag){
Configuration conf = new Configuration();
FileSystem fs = FileSystem.get(conf);
FSDataInputStream in = fs.open(new Path(path));
br = new BufferedReader(new InputStreamReader(in));
}else{
br = new BufferedReader(new FileReader(path));
}
String readLine = null;
StringBuilder sb = new StringBuilder();
while ((readLine = br.readLine()) != null) {
if (!readLine.contains("PUBLIC KEY")){
sb.append(readLine);
}
}
br.close();
return sb.toString();
} catch (IOException e) {
throw new Exception("公钥数据流读取错误");
} catch (NullPointerException e) {
throw new Exception("公钥输入流为空");
}
}
/**
* 从字符串中加载私钥
*
* @param privateKeyStr 私钥文件名
* @return 是否成功
* @throws Exception
*/
public static RSAPrivateKey loadPrivateKeyByStr(String privateKeyStr) throws Exception {
try {
BASE64Decoder base64Decoder = new BASE64Decoder();
byte[] buffer = base64Decoder.decodeBuffer(privateKeyStr);
PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(buffer);
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
return (RSAPrivateKey) keyFactory.generatePrivate(keySpec);
} catch (NoSuchAlgorithmException e) {
throw new Exception("无此算法");
} catch (InvalidKeySpecException e) {
throw new Exception("私钥非法");
} catch (IOException e) {
throw new Exception("私钥数据内容读取错误");
} catch (NullPointerException e) {
throw new Exception("私钥数据为空");
}
}
/**
* 从文件中加载私钥
*
* @param path
* 私钥文件名
* @param flag
* true 为hdfs文件系统路径
* @return 是否成功
* @throws Exception
*/
public static String loadPrivateKeyByFile(String path, boolean flag) throws Exception {
try {
BufferedReader br = null;
if(flag){
Configuration conf = new Configuration();
FileSystem fs = FileSystem.get(conf);
FSDataInputStream in = fs.open(new Path(path));
br = new BufferedReader(new InputStreamReader(in));
}else{
br = new BufferedReader(new FileReader(path));
}
String readLine = null;
StringBuilder sb = new StringBuilder();
while ((readLine = br.readLine()) != null) {
if (!readLine.contains("PRIVATE KEY")){
sb.append(readLine);
}
}
br.close();
return sb.toString();
} catch (IOException e) {
throw new Exception("私钥数据读取错误");
} catch (NullPointerException e) {
throw new Exception("私钥输入流为空");
}
}
/**
* 公钥加密
*
* @param publicKey 公钥
* @param plainTextData 明文数据
* @return
* @throws Exception 加密过程中的异常信息
*/
public static byte[] encrypt(RSAPublicKey publicKey, byte[] plainTextData)
throws Exception {
if (publicKey == null) {
throw new Exception("加密公钥为空, 请设置");
}
Cipher cipher = null;
try {
// 使用默认RSA
cipher = Cipher.getInstance("RSA");
// cipher= Cipher.getInstance("RSA", new BouncyCastleProvider());
cipher.init(Cipher.ENCRYPT_MODE, publicKey);
byte[] output = cipher.doFinal(plainTextData);
return output;
} catch (NoSuchAlgorithmException e) {
throw new Exception("无此加密算法");
} catch (NoSuchPaddingException e) {
e.printStackTrace();
return null;
} catch (InvalidKeyException e) {
throw new Exception("加密公钥非法,请检查");
} catch (IllegalBlockSizeException e) {
throw new Exception("明文长度非法");
} catch (BadPaddingException e) {
throw new Exception("明文数据已损坏");
}
}
/**
* 公钥解密
*
* @param publicKey 公钥
* @param cipherData 密文数据
* @return 明文
* @throws Exception 解密过程中的异常信息
*/
public static byte[] decrypt(RSAPublicKey publicKey, byte[] cipherData)
throws Exception {
if (publicKey == null) {
throw new Exception("解密公钥为空, 请设置");
}
Cipher cipher = null;
try {
// 使用默认RSA
cipher = Cipher.getInstance("RSA");
// cipher= Cipher.getInstance("RSA", new BouncyCastleProvider());
cipher.init(Cipher.DECRYPT_MODE, publicKey);
byte[] output = cipher.doFinal(cipherData);
return output;
} catch (NoSuchAlgorithmException e) {
throw new Exception("无此解密算法");
} catch (NoSuchPaddingException e) {
e.printStackTrace();
return null;
} catch (InvalidKeyException e) {
throw new Exception("解密公钥非法,请检查");
} catch (IllegalBlockSizeException e) {
throw new Exception("密文长度非法");
} catch (BadPaddingException e) {
throw new Exception("密文数据已损坏");
}
}
/**
* 私钥加密
*
* @param privateKey 私钥
* @param plainTextData 明文数据
* @return
* @throws Exception 加密过程中的异常信息
*/
public static byte[] encrypt(RSAPrivateKey privateKey, byte[] plainTextData)
throws Exception {
if (privateKey == null) {
throw new Exception("加密私钥为空, 请设置");
}
Cipher cipher = null;
try {
// 使用默认RSA
cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.ENCRYPT_MODE, privateKey);
byte[] output = cipher.doFinal(plainTextData);
return output;
} catch (NoSuchAlgorithmException e) {
throw new Exception("无此加密算法");
} catch (NoSuchPaddingException e) {
e.printStackTrace();
return null;
} catch (InvalidKeyException e) {
throw new Exception("加密私钥非法,请检查");
} catch (IllegalBlockSizeException e) {
throw new Exception("明文长度非法");
} catch (BadPaddingException e) {
throw new Exception("明文数据已损坏");
}
}
/**
* 私钥解密
*
* @param privateKey 私钥
* @param cipherData 密文数据
* @return 明文
* @throws Exception 解密过程中的异常信息
*/
public static byte[] decrypt(RSAPrivateKey privateKey, byte[] cipherData) throws Exception {
if (privateKey == null) {
throw new Exception("解密私钥为空, 请设置");
}
Cipher cipher = null;
try {
// 使用默认RSA
cipher = Cipher.getInstance("RSA");
// cipher= Cipher.getInstance("RSA", new BouncyCastleProvider());
cipher.init(Cipher.DECRYPT_MODE, privateKey);
byte[] output = cipher.doFinal(cipherData);
return output;
} catch (NoSuchAlgorithmException e) {
throw new Exception("无此解密算法");
} catch (NoSuchPaddingException e) {
e.printStackTrace();
return null;
} catch (InvalidKeyException e) {
throw new Exception("解密私钥非法,请检查");
} catch (IllegalBlockSizeException e) {
throw new Exception("密文长度非法");
} catch (BadPaddingException e) {
throw new Exception("密文数据已损坏");
}
}
/**
* 字节数据转十六进制字符串
*
* @param data 输入数据
* @return 十六进制内容
*/
public static String byteArrayToString(byte[] data) {
StringBuilder stringBuilder = new StringBuilder();
for (int i = 0; i < data.length; i++) {
// 取出字节的高四位 作为索引得到相应的十六进制标识符 注意无符号右移
stringBuilder.append(HEX_CHAR[(data[i] & 0xf0) >>> 4]);
// 取出字节的低四位 作为索引得到相应的十六进制标识符
stringBuilder.append(HEX_CHAR[(data[i] & 0x0f)]);
if (i < data.length - 1) {
stringBuilder.append(' ');
}
}
return stringBuilder.toString();
}
// btye转换hex函数
public static String ByteToHex(byte[] byteArray) {
StringBuffer StrBuff = new StringBuffer();
for (int i = 0; i < byteArray.length; i++) {
if (Integer.toHexString(0xFF & byteArray[i]).length() == 1) {
StrBuff.append("0").append(
Integer.toHexString(0xFF & byteArray[i]));
} else {
StrBuff.append(Integer.toHexString(0xFF & byteArray[i]));
}
}
return StrBuff.toString();
}
/**
* 以字节为单位读取文件,常用于读二进制文件,如图片、声音、影像等文件。
*/
public static byte[] readFileByBytes(String fileName) {
File file = new File(fileName);
InputStream in = null;
byte[] txt = new byte[(int) file.length()];
try {
// 一次读一个字节
in = new FileInputStream(file);
int tempbyte;
int i = 0;
while ((tempbyte = in.read()) != -1) {
txt[i] = (byte) tempbyte;
i++;
}
in.close();
return txt;
} catch (IOException e) {
e.printStackTrace();
return txt;
}
}
}
如果私钥文件编码是PKCS#1格式,这种格式Java是支持的,增加如下代码:
RSAPrivateKeyStructure asn1PrivKey = new RSAPrivateKeyStructure((ASN1Sequence) ASN1Sequence.fromByteArray(priKeyData));
RSAPrivateKeySpec rsaPrivKeySpec = new RSAPrivateKeySpec(asn1PrivKey.getModulus(), asn1PrivKey.getPrivateExponent());
KeyFactory keyFactory= KeyFactory.getInstance("RSA");
PrivateKey priKey= keyFactory.generatePrivate(rsaPrivKeySpec);
签名及校验类
package com.yimen.data.test;
import java.security.KeyFactory;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import org.apache.commons.codec.binary.Base64;
/**
* RSA签名验签类
*/
public class RSASignature {
/**
* 签名算法
*/
public static final String SIGN_ALGORITHMS = "SHA1WithRSA";
/**
* RSA签名
*
* @param content 待签名数据
* @param privateKey 商户私钥
* @param encode 字符集编码
* @return 签名值
*/
public static String sign(String content, String privateKey, String encode) {
try {
Base64 base64 = new Base64();
PKCS8EncodedKeySpec priPKCS8 = new PKCS8EncodedKeySpec(base64.decode(privateKey));
KeyFactory keyf = KeyFactory.getInstance("RSA");
PrivateKey priKey = keyf.generatePrivate(priPKCS8);
java.security.Signature signature = java.security.Signature.getInstance(SIGN_ALGORITHMS);
signature.initSign(priKey);
signature.update(content.getBytes(encode));
byte[] signed = signature.sign();
return new String(base64.encode(signed));
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static String sign(String content, String privateKey) {
try {
Base64 base64 = new Base64();
PKCS8EncodedKeySpec priPKCS8 = new PKCS8EncodedKeySpec(base64.decode(privateKey));
KeyFactory keyf = KeyFactory.getInstance("RSA");
PrivateKey priKey = keyf.generatePrivate(priPKCS8);
java.security.Signature signature = java.security.Signature.getInstance(SIGN_ALGORITHMS);
signature.initSign(priKey);
signature.update(content.getBytes());
byte[] signed = signature.sign();
return new String(base64.encode(signed));
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* RSA验签名检查
*
* @param content 待签名数据
* @param sign 签名值
* @param publicKey 分配给开发商公钥
* @param encode 字符集编码
* @return 布尔值
*/
public static boolean doCheck(String content, String sign, String publicKey, String encode) {
try {
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
Base64 base64 = new Base64();
byte[] encodedKey = base64.decode(publicKey);
PublicKey pubKey = keyFactory.generatePublic(new X509EncodedKeySpec(encodedKey));
java.security.Signature signature = java.security.Signature.getInstance(SIGN_ALGORITHMS);
signature.initVerify(pubKey);
signature.update(content.getBytes(encode));
boolean bverify = signature.verify(base64.decode(sign));
return bverify;
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
public static boolean doCheck(String content, String sign, String publicKey) {
try {
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
Base64 base64 = new Base64();
byte[] encodedKey = base64.decode(publicKey);
PublicKey pubKey = keyFactory.generatePublic(new X509EncodedKeySpec(encodedKey));
java.security.Signature signature = java.security.Signature.getInstance(SIGN_ALGORITHMS);
signature.initVerify(pubKey);
signature.update(content.getBytes());
boolean bverify = signature.verify(base64.decode(sign));
return bverify;
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
}
测试类
package com.yimen.data.test;
import org.apache.commons.codec.binary.Base64;
public class MainTest {
public static void main(String[] args) throws Exception {
String filepath = "D://tmp//";
// RSAEncrypt.genKeyPair(filepath);
//公钥
String publicKeyStr = RSAEncrypt.loadPublicKeyByFile(filepath + "publicKey.keystore");
// 私钥
String privateKeyStr = RSAEncrypt.loadPrivateKeyByFile(filepath + "privateKey.keystore");
Base64 base64 = new Base64();
System.out.println("--------------公钥加密私钥解密过程-------------------");
String plainText = "ihep_公钥加密私钥解密";
// 公钥加密过程
System.out.println(publicKeyStr);
byte[] cipherData = RSAEncrypt.encrypt(RSAEncrypt.loadPublicKeyByStr(publicKeyStr), plainText.getBytes());
String cipher = new String(base64.encode(cipherData));
// 私钥解密过程
System.out.println(privateKeyStr);
byte[] res = RSAEncrypt.decrypt(RSAEncrypt.loadPrivateKeyByStr(privateKeyStr),
base64.decode(cipher));
String restr = new String(res);
System.out.println("原文:" + plainText);
System.out.println("加密:" + cipher);
System.out.println("解密:" + restr);
System.out.println();
System.out.println("--------------私钥加密公钥解密过程-------------------");
plainText = "ihep_私钥加密公钥解密";
// 私钥加密过程
cipherData = RSAEncrypt.encrypt(RSAEncrypt.loadPrivateKeyByStr(privateKeyStr), plainText.getBytes());
cipher = new String(base64.encode(cipherData));
// 公钥解密过程
res = RSAEncrypt.decrypt(RSAEncrypt.loadPublicKeyByStr(publicKeyStr), base64.decode(cipher));
restr = new String(res);
System.out.println("原文:" + plainText);
System.out.println("加密:" + cipher);
System.out.println("解密:" + restr);
System.out.println();
System.out.println("---------------私钥签名过程------------------");
String content = "ihep_这是用于签名的原始数据";
String signstr = RSASignature.sign(content, privateKeyStr);
System.out.println("签名原串:" + content);
System.out.println("签名串:" + signstr);
System.out.println();
System.out.println("---------------公钥校验签名------------------");
System.out.println("签名原串:" + content);
System.out.println("签名串:" + signstr);
System.out.println("验签结果:" + RSASignature.doCheck(content, signstr, publicKeyStr));
System.out.println();
}
}