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How to decrypt using Blowfish algorithm in php?

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问题 I am supposed to write a PHP script to decrypt Blowfish encrypted data. The data I am receiving for decryption is encrypted by another application (I have no access to it). The data decrypts fine when am check it using a javascript script (blowfish.js). How can I decrypt the data in php? I have tried the mcrypt function in PHP. The code works fine if I encrypt and decrypt using the same code. If I decrypt an encrypted code (in another app) it gives junk. No idea about what mode to set. Can

几种加密算法的测试，包括对称加密和非对称加密

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对称加密算法　　Blowfish 加密解密 Blowfish 加密算法介绍:BlowFish是对称加密算法的其中一种，加密后的数据是可逆的。由于BlowFish加密/解密速度快，更重要的是任何人都可以免费使用不需要缴纳版权费，所以有不少游戏都采用BlowFish加密资源文件数据。BlowFish 每次只能加密和解密8字节数据，加密和解密的过程基本上由ADD和XOR指令运算组成，所以速度非常快。 Blowfish 加密算法实现 1 /** 2 * Blowfish加密 3 * 4 * @param text 需要加密的数据 5 * @param privateKey 加密密钥 6 * @return 7 */ 8 public static String f_EnBlowfish(String text, String privateKey) 9 { 10 byte[] cifrado1 = null; 11 byte[] cifrado2 = null; 12 byte[] mensaje = text.getBytes(); 13 try 14 { 15 Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); 16 byte[] keys = privateKey

Encrypting a string with Blowfish in ruby returns a shorter string than the same process in php

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问题 This is confusing me. When I try and use the following inputs to encrypt a string with Blowfish: key = "some key" input = "input string" I get the following results: ruby: ["79af8c8ee9220bde"] php: 79af8c8ee9220bdec2d1c9cfca7b13c6 I am going to be receiving strings from a php application so I need to get these two to sync up but I don't understand why the php string would be longer. What am I missing? php code: php > require_once 'Crypt/Blowfish.php'; php > $input = "input string"; php > $key

how long is the default key size used by mcrypt_blowfish?

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问题 I'm going to use Blowfish cipher for my project in PHP (mcrypt_blowfish). But I have a question regarding the used of mcrypt_blowfish, how long is the deafult key size that was used by this mode of encryption in PHP?? Some other cipher that was support by libmcrypt had a declared key size, like : MCRYPT_RIJNDAEL_128 --> 128 bit key MCRYPT_RIJNDAEL_192 --> 192 bit key MCRYPT_RC6_128 --> 128 bit key MCRYPT_RC6_192 --> 192 bit key But how long is the deafult key size for mcrypt_blowfish?? Thx

How does blowfish algorithm work in C++?

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问题 Hi All I have to encrypt my data using Blowfish algorithm in C++...can you guys tell me if the other end knows what algorithm I am using can they not extract the key and decrypt it ? How safe is the data by this method? 回答1: can you guys tell me if the other end knows what algorithm I am using can they not extract the key and decrypt it ? No. The whole point of standardized encryption algorithms (as opposed to those that rely on obscurity) is that even though everyone knows all details of it,

Blowfish encryption in php

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问题 I'm writing an encryption to my application and website, but I don't know how to correctly encrypt the string in php. Decryption is already done by this code: function decrypt_blowfish($data,$key){ $iv=pack("H*" , substr($data,0,16)); $key=pack("H*" , $key); $x =pack("H*" , substr($data,16)); $res = mcrypt_decrypt(MCRYPT_BLOWFISH, $key, $x , MCRYPT_MODE_CBC, $iv); return $res; } I tried with simple: function encrypt_blowfish($data,$key){ $iv_size = mcrypt_get_iv_size(MCRYPT_BLOWFISH, MCRYPT

Decrypting mcrypt encoded text with node.js

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问题 I have text encoded with Blowfish using PHP's mcrypt: $td = mcrypt_module_open ('blowfish', '', 'cfb', ''); $iv = mcrypt_create_iv (mcrypt_enc_get_iv_size ($td), MCRYPT_RAND); mcrypt_generic_init ($td, "somekey", $iv); $crypttext = mcrypt_generic ($td, "sometext"); mcrypt_generic_deinit ($td); $res = base64_encode($iv.$crypttext); When trying to decode the data with Node's crypto library I get garbage output. var crypto = require("crypto"), ivAndCiphertext = "base64-encoded-ciphertext", iv,

Is Bcrypt used for Hashing or Encryption? A bit of confusion

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问题 I have been reading about bcrypt (application perspective). Thinking of using it to store passwords on my site. Out of some stuff that I read it suggests either ways: e.g. 1: Bcrypt is a cross platform file encryption utility from bcrypt e.g. 2: bcrypt is an adaptive password hashing algorithm which uses the Blowfish keying schedule, not a symmetric encryption algorithm. from How To Safely Store A Password bcrypt is an adaptive cryptographic hash function for passwords designed by Niels

PHP storing password with blowfish & salt & pepper

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问题 I want to store secure user passwords in a MySQL database with PHP. How can I make it better? My Class: private static $algo = '$2a'; private static $cost = '$10'; private static $pepper = 'eMI8MHpEByw/M4c9o7sN3d'; public static function generateSalt($length) { $randomBinaryString = mcrypt_create_iv($length, MCRYPT_DEV_URANDOM); $randomEncodedString = str_replace('+', '.', base64_encode($randomBinaryString)); return substr($randomEncodedString, 0, $length); } public static function

PHP crypt(pass, salt) alternative in Java - Blowfish algorithm

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问题 I'm using on php server function crypt like this: $hash = crypt($password, '$2y$10$' . $salt); It makes hash of password by Blowfish method. I'm looking for java equivalent for crypt password. I found this code, but I don't know where add $salt. More above: String key = "abcd"; SecretKeySpec keySpec = new SecretKeySpec(key.getBytes(), "Blowfish"); Cipher cipher = Cipher.getInstance("Blowfish"); cipher.init(cipher.ENCRYPT_MODE, keySpec); return DatatypeConverter.printBase64Binary(cipher