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• RSA2.java

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com.egzosn.pay.common.util.sign.encrypt.RSA2 Maven / Gradle / Ivy

package com.egzosn.pay.common.util.sign.encrypt;

import java.security.PrivateKey;
import java.security.PublicKey;

public class RSA2 {

	private static final String SIGN_SHA256RSA_ALGORITHMS = "SHA256WithRSA";



	public static String sign(String content, String privateKey, String characterEncoding) {

		return RSA.sign(content, privateKey, SIGN_SHA256RSA_ALGORITHMS, characterEncoding);
	}



	/**
	 * RSA签名
	 * @param content 待签名数据
	 * @param privateKey 私钥
	 * @param characterEncoding 编码格式
	 * @return 签名值
	 */
	public static String sign(String content, PrivateKey privateKey ,String characterEncoding){
		return RSA.sign(content, privateKey, SIGN_SHA256RSA_ALGORITHMS, characterEncoding);
	}

	/**
	* RSA验签名检查
	* @param content 待签名数据
	* @param sign 签名值
	* @param  publicKey 公钥
	* @param characterEncoding 编码格式
	* @return 布尔值
	*/
	public static boolean verify(String content, String sign, String publicKey, String characterEncoding){

		return RSA.verify(content, sign, publicKey, SIGN_SHA256RSA_ALGORITHMS, characterEncoding );
	}



	/**
	 * RSA验签名检查
	 * @param content 待签名数据
	 * @param sign 签名值
	 * @param  publicKey 公钥
	 * @param characterEncoding 编码格式
	 * @return 布尔值
	 */
	public static boolean verify(String content, String sign, PublicKey publicKey, String characterEncoding){
		return RSA.verify(content, sign, publicKey, SIGN_SHA256RSA_ALGORITHMS, characterEncoding);
	}

	/**
	* 解密
	* @param content 密文
	* @param privateKey 商户私钥
	* @param characterEncoding 编码格式
	* @return 解密后的字符串
	 * @throws Exception 解密异常
	*/
	public static String decrypt(String content, String privateKey, String characterEncoding) throws Exception {
        return RSA.decrypt(content, privateKey, characterEncoding);
    }

	
	/**
	* 得到私钥
	* @param key 密钥字符串（经过base64编码）
	* @throws Exception 加密异常
	 * @return 私钥
	*/
	public static PrivateKey getPrivateKey(String key) throws Exception {
		return RSA.getPrivateKey(key);
	}


	public static String encrypt(String content, String publicKey, String cipherAlgorithm, String characterEncoding ) throws Exception {
		return Base64.encode(RSA.encrypt(content.getBytes(characterEncoding), RSA.getPublicKey(publicKey),2048, 11, cipherAlgorithm));
	}
}