java和js實現aes加密解密
阿新 • • 發佈：2019-01-08
由於公司安全測試，要對重要資訊進行加密傳輸，使得java、android、ios一致。
java程式碼
package gov.communitycloud.user.utils; import java.math.BigInteger; import javax.crypto.Cipher; import javax.crypto.KeyGenerator; import javax.crypto.spec.SecretKeySpec; import org.apache.commons.codec.binary.Base64; import org.apache.commons.lang3.StringUtils; import sun.misc.BASE64Decoder; /** * 編碼工具類 * 實現aes加密、解密 */ public class EncryptUtils { /** * 金鑰 */ private static final String KEY = "abcdefgabcdefg12"; /** * 演算法 */ private static final String ALGORITHMSTR = "AES/ECB/PKCS5Padding"; public static void main(String[] args) throws Exception { String content = "我愛你"; System.out.println("加密前：" + content); System.out.println("加密金鑰和解密金鑰：" + KEY); String encrypt = aesEncrypt(content, KEY); System.out.println("加密後：" + encrypt); String decrypt = aesDecrypt(encrypt, KEY); System.out.println("解密後：" + decrypt); } /** * aes解密 * @param encrypt 內容 * @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); } /** * 將byte[]轉為各種進位制的字串 * @param bytes byte[] * @param radix 可以轉換進位制的範圍，從Character.MIN_RADIX到Character.MAX_RADIX，超出範圍後變為10進位制 * @return 轉換後的字串 */ public static String binary(byte[] bytes, int radix){ return new BigInteger(1, bytes).toString(radix);// 這裡的1代表正數 } /** * base 64 encode * @param bytes 待編碼的byte[] * @return 編碼後的base 64 code */ public static String base64Encode(byte[] bytes){ return Base64.encodeBase64String(bytes); } /** * base 64 decode * @param base64Code 待解碼的base 64 code * @return 解碼後的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 待加密的內容 * @param encryptKey 加密金鑰 * @return 加密後的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加密為base 64 code * @param content 待加密的內容 * @param encryptKey 加密金鑰 * @return 加密後的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 解密金鑰 * @return 解密後的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); } /** * 將base 64 code AES解密 * @param encryptStr 待解密的base 64 code * @param decryptKey 解密金鑰 * @return 解密後的string * @throws Exception */ public static String aesDecrypt(String encryptStr, String decryptKey) throws Exception { return StringUtils.isEmpty(encryptStr) ? null : aesDecryptByBytes(base64Decode(encryptStr), decryptKey); } }
js程式碼
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>aes測試</title> <script type="text/javascript" src="aes.js"></script> <script type="text/javascript" src="../components/mode-ecb.js"></script> </head> <body> </body> <script type="text/javascript"> 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(); } 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(); } alert(Encrypt("我愛你")); alert(Decrypt(Encrypt("我愛你"))) </script> </html>
注意點
- js中需要引入CryptoJS的架包，下載地址：點選跳轉地址
- 使用aes時，js程式碼不要暴漏在外面，不然key會被拿到
- PKCS5Padding和PKCS7Padding的結果是一樣