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How to analyze WeChat Mini Programs mobile phone number abnormal Exception:javax.crypto.BadPaddingException: Given final block not properly padded, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain for you in detail, people with this need can come to learn, I hope you can gain something.

Exception:javax.crypto.BadPaddingException: Given final block not properly padded. Such issues can arise if a bad key is used during decryption.

Occasional exception: use AES/CBC/PKCS7Padding when not logging in and AES/CBC/PKCS5Padding after login

Public static String decrypt (String keyStr, String ivStr, String encDataStr) throws Exception {try {logger.info ("use AES/CBC/PKCS5Padding to decrypt cell phone number"); byte [] encData = Base64Util.decode (encDataStr); byte [] iv = Base64Util.decode (ivStr); byte [] key = Base64Util.decode (keyStr); AlgorithmParameterSpec ivSpec = new IvParameterSpec (iv) Cipher cipher = Cipher.getInstance ("AES/CBC/PKCS5Padding"); SecretKeySpec keySpec = new SecretKeySpec (key, "AES"); cipher.init (Cipher.DECRYPT_MODE, keySpec, ivSpec); return new String (cipher.doFinal (encData), "UTF-8");} catch (Exception e) {logger.info ("use AES/CBC/PKCS7Padding to decrypt cell phone number") Byte [] encData = Base64Util.decode (encDataStr); byte [] iv = Base64Util.decode (ivStr); byte [] key = Base64Util.decode (keyStr); AlgorithmParameterSpec ivSpec = new IvParameterSpec (iv); Cipher cipher = Cipher.getInstance ("AES/CBC/PKCS7Padding"); SecretKeySpec keySpec = new SecretKeySpec (key, "AES"); cipher.init (Cipher.DECRYPT_MODE, keySpec, ivSpec) Return new String (cipher.doFinal (encData), "UTF-8");}} is it helpful for you to read the above content? If you want to know more about the relevant knowledge or read more related articles, please follow the industry information channel, thank you for your support.

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