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Java AES Decrypting problem

由 Deadly 提交于 2019-12-06 12:08:49
问题 I have been tasked with decrypting a file in Java that has been encrypted using the following criteria: AES encryption algorithm with 128-bit key, ECB mode and PKCS7 padding. The encrypted file format is: - first byte is hex 0x31 – specifying encryption method used (1 for AES) - followed by the encrypted bytes of the input file I must also download the file, so here is my attempt so far: The download code, I skip the first byte here as it is not required and is not encrypted: final String

How to decrypt AES ECB using crypto-js

由 |▌冷眼眸甩不掉的悲伤 提交于 2019-12-05 15:54:08
I am trying to send encrypted data from flash (client side) to javascript (running as jscript in asp) on the server side. There are several javascript Aes libraries, but they are virtually undocumented. I'm trying with crypto-js, but cant get the code to work. The below example generates an empty output, it should generate "6bc1bee22e409f96e93d7e117393172a". <html xmlns="http://www.w3.org/1999/xhtml"> <head> </head> <body> <script src="http://crypto-js.googlecode.com/svn/tags/3.1/build/rollups/aes.js"></script> <script src="http://crypto-js.googlecode.com/svn/tags/3.1/build/components/mode-ecb

Java AES Decrypting problem

由 徘徊边缘 提交于 2019-12-04 16:14:37
I have been tasked with decrypting a file in Java that has been encrypted using the following criteria: AES encryption algorithm with 128-bit key, ECB mode and PKCS7 padding. The encrypted file format is: - first byte is hex 0x31 – specifying encryption method used (1 for AES) - followed by the encrypted bytes of the input file I must also download the file, so here is my attempt so far: The download code, I skip the first byte here as it is not required and is not encrypted: final String PATH = "/sdcard/" + IMEI + ".xml"; //put the downloaded file here try { URL url = new URL(context

Python Blowfish Encryption

由 家住魔仙堡 提交于 2019-12-03 17:01:07
I am struggling due to my incomplete knowledge of Java to convert this encryption code to Python code. The two should have the exact same results. Help would be greatly appreciated. Java Function import javax.crypto.Cipher; import javax.crypto.spec.SecretKeySpec; import java.security.Key; class Main { public static void main (String[] args) throws java.lang.Exception { String s = "testings"; Cipher cipher = Cipher.getInstance("Blowfish/ECB/PKCS5Padding"); Key key = new SecretKeySpec("6#26FRL$ZWD".getBytes(), "Blowfish"); cipher.init(1, key); byte[] enc_bytes = cipher.doFinal(s.getBytes());

Use openssl_encrypt to replace Mcrypt for 3DES-ECB encryption

由 梦想与她 提交于 2019-11-26 12:33:47
问题 I have an encryption method with mycrypt and the cipher is 3des , mode ecb : mcrypt_module_open ( MCRYPT_3DES, \'\', \'ecb\', \'\' ) Now I want to encrypt it using openssl_encrypt , and I did not find des3-ecb in openssl_get_cipher_methods() list. 回答1: now I want to encrypt it use openssl_encrypt , and I did not find des3-ecb in openssl_get_cipher_methods() list. It's des-ede3 . Symmetric encryption with a block cipher needs some kind of mode of operation. If you look through the list, you
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