java RSA生成公钥对象和私钥对象

1、字符串生成公钥对象PublicKey

/**

* 实例化公钥

*

* @return

*/

private PublicKey getPubKey() {

PublicKey publicKey = null;

try {

// 自己的公钥(测试)

String pubKey ="MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCVRiDkEKXy/KBTe+UmkA+feq1zGWIgBxkgbz7aBJGb5+eMKKoiDRoEHzlGndwFKm4mQWNftuMOfNcogzYpGKSEfC7sqfBPDHsGPZixMWzL3J10zkMTWo6MDIXKKqMG1Pgeq1wENfJjcYSU/enYSZkg3rFTOaBSFId+rrPjPo7Y4wIDAQAB";

java.security.spec.X509EncodedKeySpec bobPubKeySpec = newjava.security.spec.X509EncodedKeySpec(

new BASE64Decoder().decodeBuffer(pubKey));

// RSA对称加密算法

Java.security.KeyFactory keyFactory;

keyFactory = java.security.KeyFactory.getInstance("RSA");

// 取公钥匙对象

publicKey = keyFactory.generatePublic(bobPubKeySpec);

} catch (NoSuchAlgorithmException e) {

e.printStackTrace();

} catch (InvalidKeySpecException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

return publicKey;

}

2、字符串生成私钥对象

/**

* 实例化私钥

*

* @return

*/

private PrivateKey getPrivateKey() {

PrivateKey privateKey = null;

String priKey = "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";

PKCS8EncodedKeySpec priPKCS8;

try {

priPKCS8 = new PKCS8EncodedKeySpec(new BASE64Decoder().decodeBuffer(priKey));

KeyFactory keyf = KeyFactory.getInstance("RSA");

privateKey = keyf.generatePrivate(priPKCS8);

} catch (IOException e) {

e.printStackTrace();

} catch (NoSuchAlgorithmException e) {

e.printStackTrace();

} catch (InvalidKeySpecException e) {

e.printStackTrace();

}

return privateKey;

}