java中公钥，私钥，pkcs1格式，pkcs8格式互转
直接放代码，别的不BB
转载地址这位大神博客地址
maven依赖
org.bouncycastle
bcprov-jdk15on
1.60
格式工具类代码
import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
import java.security.KeyFactory;
import java.security.PrivateKey;
import java.security.Security;
import java.security.interfaces.RSAPrivateCrtKey;
import java.security.spec.EncodedKeySpec;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.RSAPrivateKeySpec;
import java.util.List;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers;
import org.bouncycastle.asn1.pkcs.PrivateKeyInfo;
import org.bouncycastle.asn1.pkcs.RSAPrivateKeyStructure;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
import org.bouncycastle.crypto.AsymmetricCipherKeyPair;
import org.bouncycastle.util.io.pem.PemObject;
import org.bouncycastle.util.io.pem.PemReader;
import org.bouncycastle.util.io.pem.PemWriter;
import org.bouncycastle.openssl.MiscPEMGenerator;
import org.bouncycastle.openssl.PKCS8Generator;
import com.ctrip.lzyan.test.cipher.cscm.RsaPemUtil;
import com.google.common.base.Joiner;
import com.google.common.base.Splitter;
import com.google.common.base.Strings;
import com.google.common.collect.Lists;
import org.apache.commons.codec.binary.Base64;
/**
* Transform PKCS format
* PKCS#1 -> PKCS#8
* PKCS#8 -> PKCS#1
*
*/
public class RsaPkcsTransformer {
private static final String COMMENT_BEGIN_FLAG = "-----";
private static final String RETURN_FLAG_R = "\r";
private static final String RETURN_FLAG_N = "\n";
//format PKCS#8 to PKCS#1
public static String formatPkcs8ToPkcs1(String rawKey) throws Exception {
String result = null;
//extract valid key content
String validKey = RsaPemUtil.extractFromPem(rawKey);
if(!Strings.isNullOrEmpty(validKey)) {
//将BASE64编码的私钥字符串进行解码
byte[] encodeByte = Base64.decodeBase64(validKey);
//==========
//pkcs8Bytes contains PKCS#8 DER-encoded key as a byte[]
PrivateKeyInfo pki = PrivateKeyInfo.getInstance(encodeByte);
RSAPrivateKeyStructure pkcs1Key = RSAPrivateKeyStructure.getInstance(pki.getPrivateKey());
byte[] pkcs1Bytes = pkcs1Key.getEncoded();//etc.
//==========
String type = "RSA PRIVATE KEY";
result = format2PemString(type, pkcs1Bytes);
}
return result;
}
//format PKCS#1 to PKCS#8
public static String formatPkcs1ToPkcs8(String rawKey) throws Exception {
String result = null;
//extract valid key content
String validKey = RsaPemUtil.extractFromPem(rawKey);
if(!Strings.isNullOrEmpty(validKey)) {
//将BASE64编码的私钥字符串进行解码
byte[] encodeByte = Base64.decodeBase64(validKey);
AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(PKCSObjectIdentifiers.pkcs8ShroudedKeyBag); //PKCSObjectIdentifiers.pkcs8ShroudedKeyBag
ASN1Object asn1Object = ASN1Object.fromByteArray(encodeByte);
PrivateKeyInfo privKeyInfo = new PrivateKeyInfo(algorithmIdentifier, asn1Object);
byte[] pkcs8Bytes = privKeyInfo.getEncoded();
String type = "PRIVATE KEY";
result = format2PemString(type, pkcs8Bytes);
}
return result;
}
// Write to pem file
private static String format2PemString(String type, byte[] privateKeyPKCS1) throws Exception {
PemObject pemObject = new PemObject(type, privateKeyPKCS1);
StringWriter stringWriter = new StringWriter();
PemWriter pemWriter = new PemWriter(stringWriter);
pemWriter.writeObject(pemObject);
pemWriter.close();
String pemString = stringWriter.toString();
return pemString;
}
//=== Testing ===
public static void main(String[] args) throws Exception {
String rawKey_pkcs1 = "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";
String rawKey_pkcs8 = "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";
//rawKey_pkcs1 = "MIICXAIBAAKBgQC0Y9rmhe4fIsFrrm0m/jrbfZsqxMYvg8qdvbSGHC9vnYm4K5p3bFBqqULAFlv2ZGjrWDFcBfa562E5hXtAoACXtsDH8WCkhfNiPkGQn3wNDGRpfYVup/F1LdceunSu0IYDP0MACzKY1S7KM2qJi8P8YlXZ91oyRfgb8lgqdQoXmQIDAQABAoGAIG90BM9AKckODlamucQswRqss9v95r1DyWk69IJM5Tzmbn8onyCStRsKLY/XqU4Ur3yEI4/O9U8lhDpEFzKt6ExkITkiVcVlRuK0lkAKS4Uu4W+YoPzNLwKoL3dS1my+wPOxgswJ+QPSrYfWoGDoDNiZctskcHprplkECYI9/aECQQDXvkZl9IHXRolUCQWfS5MFWVgPwaXNP3X3gXaqdfhoopIPsZphurd+hxDWforh+KNkdRejbbwIveGTxkXqxTe3AkEA1gzPz9IAzFPx8RjkOxgRag3g+Rp+35nuLw18Rt04EODinurCsg3t5k2rOx2Fic6GVozqM3B3p4ATr4GsyhALLwJAFi8vp/47d7p+FpES7e1kgdFNF9muxes3oyrB3Adjcsb8w/ZcTJ5Zjf4vgg7jExdxHbxYoOqAwllcH8jsmZaMAwJAXdJjzF3qR6WL6PfWIijciTXoJIf+kJfyFOG+VXllt9A6xRl1mYINguMMaO75t3u02n8NsNpdOCgleMpIKJF7tQJBALsDYb59npdnKL2V0zk5bZ7Nd40dy4KbRcXIG2Ll/Lo6CeY/6Jes868R0yyuyLGP5CcayMKVAhcVk3xEWI7dluU=";
String formatKey = formatPkcs1ToPkcs8(rawKey_pkcs1);
//String formatKey = formatPkcs8ToPkcs1(rawKey_pkcs8);
System.out.println(formatKey); //expect: abcdef
}
}
RsaPkcsTransformer
加解密代码
package com.ctrip.lzyan.test.element.rsa.sample4;
import java.security.Key;
import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PrivateKey;
import java.security.interfaces.RSAPrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.RSAPrivateKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.util.HashMap;
import java.util.Map;
import javax.crypto.Cipher;
import org.apache.commons.codec.binary.Base64;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.pkcs.RSAPrivateKeyStructure;
/**
*
* RSA+Base64加密解密工具类 RSA 一般用在数据传输过程中的加密和解密 先用RSA加密后是字节数组 再用BASE64加密 成字符串进行传输 测试
* RSA1024产生的公钥字节长度在160-170之间 私钥长度在630-640之间 经过base64加密后长度 公钥字节产度在210-220之间
* 私钥长度在840-850之间 所以数据库设计时如果存公钥长度设计varchar(256) 私钥长度varchar(1024)
*
*/
public abstract class LzyanRSAUtilTest2 {
public static final String KEY_ALGORITHM = "RSA";
private static final String PUBLIC_KEY = "rsa_public_key";
private static final String PRIVATE_KEY = "rsa_private_key";
private static final String ENCODING = "UTF-8";
/**
*
* 加密
* 用公钥加密
* @param content
* @param base64PublicKeyStr
* @return
* @throws Exception
*/
public static String encryptByPublicKey(String content, String base64PublicKeyStr) throws Exception {
byte[] inputBytes = content.getBytes(ENCODING);
byte[] outputBytes = encryptByPublicKey(inputBytes, base64PublicKeyStr);
return Base64.encodeBase64String(outputBytes);
}
/**
*
* 加密
*
* 用私钥加密
* @param content
* @param base64PrivateKeyStr
* @return
* @throws Exception
*/
public static String encryptByPrivateKey(String content, String base64PrivateKeyStr) throws Exception {
byte[] inputBytes = content.getBytes(ENCODING);
byte[] outputBytes = encryptByPrivateKey(inputBytes, base64PrivateKeyStr);
return Base64.encodeBase64String(outputBytes);
}
/**
*
* 解密
* 用公钥解密
* @param content
* @param base64PublicKeyStr
* @return
* @throws Exception
*/
public static String decryptByPublicKey(String content, String base64PublicKeyStr) throws Exception {
byte[] inputBytes = Base64.decodeBase64(content);
byte[] outputBytes = decryptByPublicKey(inputBytes, base64PublicKeyStr);
return new String(outputBytes, ENCODING);
}
/**
*
* 解密
* 用私钥解密
* @param content
* @param privateKeyStr
* @return
* @throws Exception
*/
public static String decryptByPrivateKey(String content, String base64PrivateKeyStr) throws Exception {
byte[] inputBytes = Base64.decodeBase64(content);
byte[] outputBytes = decryptByPrivateKey(inputBytes, base64PrivateKeyStr);
return new String(outputBytes, ENCODING);
}
/**
*
* 加密
* 用公钥加密
* @param content
* @param base64PublicKeyStr
* @return
* @throws Exception
*/
public static byte[] encryptByPublicKey(byte[] content, String base64PublicKeyStr) throws Exception {
// 对公钥解密
byte[] publicKeyBytes = Base64.decodeBase64(base64PublicKeyStr);
// 取得公钥
X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(publicKeyBytes);
KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
Key publicKey = keyFactory.generatePublic(x509KeySpec);
// 对数据加密
Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());
cipher.init(Cipher.ENCRYPT_MODE, publicKey);
return cipher.doFinal(content);
}
/**
*
* 加密
* 用私钥加密
* @param content
* @param base64PrivateKeyStr
* @return
* @throws Exception
*/
public static byte[] encryptByPrivateKey(byte[] content, String base64PrivateKeyStr) throws Exception {
// 对密钥解密
byte[] privateKeyBytes = Base64.decodeBase64(base64PrivateKeyStr);
// 取得私钥
PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(privateKeyBytes);
KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
Key privateKey = keyFactory.generatePrivate(pkcs8KeySpec);
// 对数据加密
Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());
cipher.init(Cipher.ENCRYPT_MODE, privateKey);
return cipher.doFinal(content);
}
/**
*
* 解密
* 用公钥解密
* @param content
* @param base64PublicKeyStr
* @return
* @throws Exception
*/
public static byte[] decryptByPublicKey(byte[] content, String base64PublicKeyStr) throws Exception {
// 对密钥解密
byte[] publicKeyBytes = Base64.decodeBase64(base64PublicKeyStr);
// 取得公钥
X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(publicKeyBytes);
KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
Key publicKey = keyFactory.generatePublic(x509KeySpec);
// 对数据解密
Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());
cipher.init(Cipher.DECRYPT_MODE, publicKey);
return cipher.doFinal(content);
}
/**
* 解密
* 用私钥解密
* @param content
* @param privateKeyStr
* @return
* @throws Exception
*/
public static byte[] decryptByPrivateKey(byte[] content, String base64PrivateKeyStr) throws Exception {
// 对密钥解密
byte[] privateKeyBytes = Base64.decodeBase64(base64PrivateKeyStr);
// 取得私钥 for PKCS#1
// RSAPrivateKeyStructure asn1PrivKey = new RSAPrivateKeyStructure((ASN1Sequence) ASN1Sequence.fromByteArray(privateKeyBytes));
// RSAPrivateKeySpec rsaPrivKeySpec = new RSAPrivateKeySpec(asn1PrivKey.getModulus(), asn1PrivKey.getPrivateExponent());
// KeyFactory keyFactory= KeyFactory.getInstance("RSA");
// PrivateKey priKey= keyFactory.generatePrivate(rsaPrivKeySpec);
// 取得私钥 for PKCS#8
PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(privateKeyBytes);
KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
Key priKey = keyFactory.generatePrivate(pkcs8KeySpec);
// 对数据解密
Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());
cipher.init(Cipher.DECRYPT_MODE, priKey);
return cipher.doFinal(content);
}
/**
*
* 取得私钥
* @param keyMap
* @return
* @throws Exception
*/
public static String getBase64PrivateKeyStr(Map keyMap) throws Exception {
Key key = (Key) keyMap.get(PRIVATE_KEY);
return Base64.encodeBase64String(key.getEncoded());
}
/**
*
* 取得公钥
*
* @param keyMap
* @return
* @throws Exception
*/
public static String getBase64PublicKeyStr(Map keyMap) throws Exception {
Key key = (Key) keyMap.get(PUBLIC_KEY);
return Base64.encodeBase64String(key.getEncoded());
}
/**
*
* 初始化密钥
* @return
* @throws Exception
*/
public static Map initKey() throws Exception {
KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance(KEY_ALGORITHM);
keyPairGen.initialize(1024); // 初始化RSA1024安全些
KeyPair keyPair = keyPairGen.generateKeyPair();
RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic(); // 公钥
RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate(); // 私钥
Map keyMap = new HashMap(2);
keyMap.put(PUBLIC_KEY, publicKey);
keyMap.put(PRIVATE_KEY, privateKey);
return keyMap;
}
private static void test() throws Exception {
String pubKey =
"MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDgDxka1U8SWI1vBY7pA1UiCVnr" +
"dtSgE+PpyTqe2YSEWCgkYQ2YsohZwsaUao7nya7QnBgRiPKEHgS/Eey+L9iwo32S" +
"n5fUwb0nJ1+JeXRA6JsDEKpONJojIbF2nfgHLWsNn4bzn5Webc6WZLx0GyLTQuZG" +
"adFVuVq2dQqEsrq7HwIDAQAB";
String str = "123456";
String content = encryptByPublicKey(str, pubKey);
System.out.println(content);
String priKey_pkcs1 = "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";
String priKey_pkcs8_openssl = "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";
String priKey_pkcs8_new = "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";
String priKey = priKey_pkcs8_new;
String output = decryptByPrivateKey(content, priKey);
System.out.println(output);
}
// === Testing ===
public static void main(String[] args) throws Exception {
test();
}
}
LzyanRSAUtilTest2
Java中使用PKCS#1秘钥
// 取得私钥 for PKCS#1
RSAPrivateKeyStructure asn1PrivKey = new RSAPrivateKeyStructure((ASN1Sequence) ASN1Sequence.fromByteArray(privateKeyBytes));
RSAPrivateKeySpec rsaPrivKeySpec = new RSAPrivateKeySpec(asn1PrivKey.getModulus(), asn1PrivKey.getPrivateExponent());
KeyFactory keyFactory= KeyFactory.getInstance("RSA");
PrivateKey priKey= keyFactory.generatePrivate(rsaPrivKeySpec);
// 取得私钥 for PKCS#8
PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(privateKeyBytes);
KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
Key priKey = keyFactory.generatePrivate(pkcs8KeySpec);
附赠自己测试使用的代码(亲测有效,这里只放了pkcs8转1(因为稀少),1转8的网上大量有):
package com.***.middleground.msv.service.impl;
import org.apache.commons.codec.binary.Base64;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.pkcs.PrivateKeyInfo;
import org.bouncycastle.util.io.pem.PemObject;
import org.bouncycastle.util.io.pem.PemWriter;
import org.junit.Test;
import java.io.IOException;
import java.io.StringWriter;
/**
* @author chenxiaolong
* @description
* @company ***
* @date 2019/9/17 12:44
*/
public class ConvertPkcs1{
@Test
public void testPkcs8ToPkcs1() throws IOException {
String privateKey = "MIICdgIBADANBgkqhkiG9w0BAQEFAASCAmAwggJcAgEAAoGBAIQeQqzER5h0HL60\n" +
"TaBwjqQhtTl4gAOYnHNtLj5wvBCLCD6eiQeE5JavYZLZWAAv50fmZZO/FGfNqeG3\n" +
"x+spaEPMB3c+NOv5cOetGxxZe1ErO7MwBxz/Vsx4E0+wGoSSukwp9NqrWfWJYq91\n" +
"SMEJdylf5Q/CXfKbpv/frOuebTD7AgMBAAECgYB6vPIMNrycsSITOMX1Cxw49ue5\n" +
"YGzs6lZOFVwkve65H7ClG/sJdTg3lO780dWjNt2SOkSboaR/Wt07yNR9b5ZgIpg9\n" +
"Ab5EstjUz19aP0CyrZobklmBL74l4qm6nnIDqY5kw7+OJMqbEOs11xlNo65gkwuB\n" +
"fKqp88+MxPgu86hBQQJBAPMCKgnaFagfbf8onXuTYm77tV0aQGEi0NrrjyitfiT+\n" +
"s5ngByMEud+THIFbEwve0QzKQsS1i6ncvP7IzKwC9OMCQQCLLnE0k5cxFj2eUmPT\n" +
"9CKLa+aPvwP4CRIyvnGY6jL3gRtjRkha3k60S9ZJL9eLv4Pc2dPEpCcbQlQmNudY\n" +
"LCcJAkBW1jAlgxv4DvskkePss9cZ57KAiY/15hYSFNj8ZTrNh4KweuCx/89X+F7Y\n" +
"Tq44sK+tTV2co288DNgwh5qz4P6XAkBxCD6X3GUlUFKqiW7Za6PCZtbQVuj6PyOw\n" +
"YkoPTeQmbYu4jBOm+HQiqJRWy6vZqqeEbMM3J7k6whtlDaHEUddBAkEA2fgRHwEn\n" +
"lJjD4jQ7AskL1XF8/4qM5g5I7VqyJTvRoW4n54wLNfM0Opjv2byvj1GU2qjWooBN\n" +
"c+2XnS7835lsUw==";
byte[] privBytes = Base64.decodeBase64(privateKey);
PrivateKeyInfo pkInfo = PrivateKeyInfo.getInstance(privBytes);
ASN1Encodable encodable = pkInfo.parsePrivateKey();
ASN1Primitive primitive = encodable.toASN1Primitive();
byte[] privateKeyPKCS1 = primitive.getEncoded();
String type = "RSA PRIVATE KEY";
PemObject pemObject = new PemObject(type, privateKeyPKCS1);
StringWriter stringWriter = new StringWriter();
PemWriter pemWriter = new PemWriter(stringWriter);
pemWriter.writeObject(pemObject);
pemWriter.close();
String pemString = stringWriter.toString();
String[] split = pemString.split("-----");
String replace = split[2].replace("\r\n", "");
System.out.print(replace);
}
}