java和js实现aes加密解密,AES加密比DES加密更安全
1、页面引入js
<script type="text/javascript" src="./aes/aes.js"></script>
<script type="text/javascript" src="./aes/mode-ecb.js"></script>
2、AES加密方法
//AES加密
function Encrypt(word){
var key = CryptoJS.enc.Utf8.parse("abcdefgabcdefg12");
var srcs = CryptoJS.enc.Utf8.parse(word);
var encrypted = CryptoJS.AES.encrypt(srcs, key, {mode:CryptoJS.mode.ECB,padding: CryptoJS.pad.Pkcs7});
return encrypted.toString();
}
//AES解密
function Decrypt(word){
var key = CryptoJS.enc.Utf8.parse("abcdefgabcdefg12");
var decrypt = CryptoJS.AES.decrypt(word, key, {mode:CryptoJS.mode.ECB,padding: CryptoJS.pad.Pkcs7});
return CryptoJS.enc.Utf8.stringify(decrypt).toString();
}
测试:
alert(Encrypt("测试"));
alert(Decrypt(Encrypt("测试")));
3、加密账号密码
4、Java引入工具类(文章最后)
5、使用工具类解密
username=EncryptUtils.aesDecrypt(username, "abcdefgabcdefg12");
password=EncryptUtils.aesDecrypt(password, "abcdefgabcdefg12");
如果报错,试试:
byte[] decryptFrom =EncryptUtils.parseHexStr2Byte(user);
byte[] decryptResult = EncryptUtils.decrypt(decryptFrom, "abcdefgabcdefg12");
user = new String(decryptResult);
byte[] decryptFrom2 =EncryptUtils.parseHexStr2Byte(pwd);
byte[] decryptResult2 = EncryptUtils.decrypt(decryptFrom2, "abcdefgabcdefg12");
pwd = new String(decryptResult2);
EncryptUtils.java
package com.util; import java.math.BigInteger; import java.security.NoSuchAlgorithmException; import java.security.SecureRandom; import javax.crypto.Cipher; import javax.crypto.KeyGenerator; import javax.crypto.SecretKey; import javax.crypto.spec.SecretKeySpec; import org.apache.commons.codec.binary.Base64; import org.apache.commons.lang.StringUtils; import sun.misc.BASE64Decoder; /** * 编码工具类 * 实现aes加密、解密 */ public class EncryptUtils { /** * 密钥 */ private static final String KEY = "abcdefgabcdefg12"; /** * 算法 */ private static final String ALGORITHMSTR = "AES/ECB/PKCS5Padding"; // public static void main(String[] args) throws Exception { // String content = "ning11"; // String password = "@#$#@!@#$#@!%^^%$"; // //加密 // System.out.println("加密前:" + content); // byte[] encryptResult = encrypt(content, password); // String encryptResultStr = parseByte2HexStr(encryptResult); // System.out.println("加密后:" + encryptResultStr); // //解密 // byte[] decryptFrom = parseHexStr2Byte(encryptResultStr); // byte[] decryptResult = decrypt(decryptFrom,password); // System.out.println("解密后:" + new String(decryptResult)); // } /** * aes解密 * @param encrypt 内容 * @return * @throws Exception */ public static String aesDecrypt(String encrypt) throws Exception { return aesDecrypt(encrypt, KEY); } /** * aes加密 * @param content * @return * @throws Exception */ public static String aesEncrypt(String content) throws Exception { return aesEncrypt(content, KEY); } /** * 将byte[]转为各种进制的字符串 * @param bytes byte[] * @param radix 可以转换进制的范围,从Character.MIN_RADIX到Character.MAX_RADIX,超出范围后变为10进制 * @return 转换后的字符串 */ public static String binary(byte[] bytes, int radix){ return new BigInteger(1, bytes).toString(radix);// 这里的1代表正数 } /** * base 64 encode * @param bytes 待编码的byte[] * @return 编码后的base 64 code */ public static String base64Encode(byte[] bytes){ byte[] byte11 = Base64.encodeBase64(bytes); String byte1 = parseByte2HexStr(byte11); // return Base64.encodeBase64String(bytes); return byte1; } /**将16进制转换为二进制 * @param hexStr * @return */ public static byte[] parseHexStr2Byte(String hexStr) { if (hexStr.length() < 1) return null; byte[] result = new byte[hexStr.length()/2]; for (int i = 0;i< hexStr.length()/2; i++) { int high = Integer.parseInt(hexStr.substring(i*2, i*2+1), 16); int low = Integer.parseInt(hexStr.substring(i*2+1, i*2+2), 16); result[i] = (byte) (high * 16 + low); } return result; } public static String parseByte2HexStr(byte buf[]) { StringBuffer sb = new StringBuffer(); for (int i = 0; i < buf.length; i++) { String hex = Integer.toHexString(buf[i] & 0xFF); if (hex.length() == 1) { hex = '0' + hex; } sb.append(hex.toUpperCase()); } return sb.toString(); } /** * base 64 decode * @param base64Code 待解码的base 64 code * @return 解码后的byte[] * @throws Exception */ public static byte[] base64Decode(String base64Code) throws Exception{ return StringUtils.isEmpty(base64Code) ? null : new BASE64Decoder().decodeBuffer(base64Code); } /** * AES加密 * @param content 待加密的内容 * @param encryptKey 加密密钥 * @return 加密后的byte[] * @throws Exception */ public static byte[] aesEncryptToBytes(String content, String encryptKey) throws Exception { KeyGenerator kgen = KeyGenerator.getInstance("AES"); kgen.init(128); Cipher cipher = Cipher.getInstance(ALGORITHMSTR); cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(encryptKey.getBytes(), "AES")); return cipher.doFinal(content.getBytes("utf-8")); } /** * AES加密为base 64 code * @param content 待加密的内容 * @param encryptKey 加密密钥 * @return 加密后的base 64 code * @throws Exception */ public static String aesEncrypt(String content, String encryptKey) throws Exception { return base64Encode(aesEncryptToBytes(content, encryptKey)); } /** * AES解密 * @param encryptBytes 待解密的byte[] * @param decryptKey 解密密钥 * @return 解密后的String * @throws Exception */ public static String aesDecryptByBytes(byte[] encryptBytes, String decryptKey) throws Exception { KeyGenerator kgen = KeyGenerator.getInstance("AES"); kgen.init(128); Cipher cipher = Cipher.getInstance(ALGORITHMSTR); cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(decryptKey.getBytes(), "AES")); byte[] decryptBytes = cipher.doFinal(encryptBytes); return new String(decryptBytes); } /** * 将base 64 code AES解密 * @param encryptStr 待解密的base 64 code * @param decryptKey 解密密钥 * @return 解密后的string * @throws Exception */ public static String aesDecrypt(String encryptStr, String decryptKey) throws Exception { return StringUtils.isEmpty(encryptStr) ? null : aesDecryptByBytes(base64Decode(encryptStr), decryptKey); } /**解密 * @param content 待解密内容 * @param password 解密密钥 * @return */ public static byte[] decrypt(byte[] content, String password) { try { KeyGenerator kgen = KeyGenerator.getInstance("AES"); kgen.init(128, new SecureRandom(password.getBytes())); SecretKey secretKey = kgen.generateKey(); byte[] enCodeFormat = secretKey.getEncoded(); SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES"); Cipher cipher = Cipher.getInstance("AES");// 创建密码器 cipher.init(Cipher.DECRYPT_MODE, key);// 初始化 byte[] result = cipher.doFinal(content); return result; // 加密 }catch (Exception e) { e.printStackTrace(); } return null; } public static byte[] encrypt(String content, String password) { try { KeyGenerator kgen = KeyGenerator.getInstance("AES"); kgen.init(128, new SecureRandom(password.getBytes())); SecretKey secretKey = kgen.generateKey(); byte[] enCodeFormat = secretKey.getEncoded(); SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES"); Cipher cipher = Cipher.getInstance("AES");// 创建密码器 byte[] byteContent = content.getBytes("utf-8"); cipher.init(Cipher.ENCRYPT_MODE, key);// 初始化 byte[] result = cipher.doFinal(byteContent); return result; // 加密 } catch (Exception e) { e.printStackTrace(); } return null; } }
Base64.java
package com.zbiti.android.zhxj.activity; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.OutputStream; public class Base64 { private static final char[] legalChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".toCharArray(); /** * data[]进行编码 * @param data * @return */ public static String encode(byte[] data) { int start = 0; int len = data.length; StringBuffer buf = new StringBuffer(data.length * 3 / 2); int end = len - 3; int i = start; int n = 0; while (i <= end) { int d = ((((int) data[i]) & 0x0ff) << 16) | ((((int) data[i + 1]) & 0x0ff) << 8) | (((int) data[i + 2]) & 0x0ff); buf.append(legalChars[(d >> 18) & 63]); buf.append(legalChars[(d >> 12) & 63]); buf.append(legalChars[(d >> 6) & 63]); buf.append(legalChars[d & 63]); i += 3; if (n++ >= 14) { n = 0; buf.append(" "); } } if (i == start + len - 2) { int d = ((((int) data[i]) & 0x0ff) << 16) | ((((int) data[i + 1]) & 255) << 8); buf.append(legalChars[(d >> 18) & 63]); buf.append(legalChars[(d >> 12) & 63]); buf.append(legalChars[(d >> 6) & 63]); buf.append("="); } else if (i == start + len - 1) { int d = (((int) data[i]) & 0x0ff) << 16; buf.append(legalChars[(d >> 18) & 63]); buf.append(legalChars[(d >> 12) & 63]); buf.append("=="); } return buf.toString(); } private static int decode(char c) { if (c >= 'A' && c <= 'Z') return ((int) c) - 65; else if (c >= 'a' && c <= 'z') return ((int) c) - 97 + 26; else if (c >= '0' && c <= '9') return ((int) c) - 48 + 26 + 26; else switch (c) { case '+': return 62; case '/': return 63; case '=': return 0; default: throw new RuntimeException("unexpected code: " + c); } } /** * Decodes the given Base64 encoded String to a new byte array. The byte * array holding the decoded data is returned. */ public static byte[] decode(String s) { ByteArrayOutputStream bos = new ByteArrayOutputStream(); try { decode(s, bos); } catch (IOException e) { throw new RuntimeException(); } byte[] decodedBytes = bos.toByteArray(); try { bos.close(); bos = null; } catch (IOException ex) { System.err.println("Error while decoding BASE64: " + ex.toString()); } return decodedBytes; } private static void decode(String s, OutputStream os) throws IOException { int i = 0; int len = s.length(); while (true) { while (i < len && s.charAt(i) <= ' ') i++; if (i == len) break; int tri = (decode(s.charAt(i)) << 18) + (decode(s.charAt(i + 1)) << 12) + (decode(s.charAt(i + 2)) << 6) + (decode(s.charAt(i + 3))); os.write((tri >> 16) & 255); if (s.charAt(i + 2) == '=') break; os.write((tri >> 8) & 255); if (s.charAt(i + 3) == '=') break; os.write(tri & 255); i += 4; } } }
作者:架构师小跟班
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