68 lines
2.1 KiB
Java
68 lines
2.1 KiB
Java
package com.saye.hrs.commons.encrypt;
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import org.apache.commons.codec.binary.Base64;
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import java.io.UnsupportedEncodingException;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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import javax.crypto.Cipher;
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import javax.crypto.spec.IvParameterSpec;
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import javax.crypto.spec.SecretKeySpec;
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public class EncryptUtil {
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// AES ecb模式解密 key:秘钥 initVector:偏移量 encrypted：加密内容
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public static String decrypt(String key,String initVector,String encrypted) {
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try {
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IvParameterSpec iv = new IvParameterSpec(initVector.getBytes("UTF-8"));
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SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes("UTF-8"), "AES");
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Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
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cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);
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byte[] original = cipher.doFinal(Base64.decodeBase64(encrypted));
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return new String(original);
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} catch (Exception ex) {
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ex.printStackTrace();
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}
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return null;
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}
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public static void main(String[] args) throws Exception {
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System.out.println(decrypt("a6xdabhysfescfbu","encryptionIntVec","oYzamqnnyJ8GG6646PDYBQ=="));
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}
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public static String getSHA256Str(String str){
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MessageDigest messageDigest;
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String encodeStr = "";
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try {
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messageDigest = MessageDigest.getInstance("SHA-256");
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messageDigest.update(str.getBytes("UTF-8"));
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encodeStr = byte2Hex(messageDigest.digest());
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} catch (NoSuchAlgorithmException e) {
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e.printStackTrace();
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} catch (UnsupportedEncodingException e) {
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e.printStackTrace();
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}
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return encodeStr;
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}
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/**
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* 将byte转为16进制
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* @param bytes
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* @return
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*/
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private static String byte2Hex(byte[] bytes){
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StringBuffer stringBuffer = new StringBuffer();
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String temp = null;
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for (int i=0;i<bytes.length;i++){
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temp = Integer.toHexString(bytes[i] & 0xFF);
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if (temp.length()==1){
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//1得到一位的进行补0操作
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stringBuffer.append("0");
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}
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stringBuffer.append(temp);
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}
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return stringBuffer.toString();
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}
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} |