encryption

问题 When I initialize a Cipher object with the default AES/GCM algorithm, it has a reandom 12 bytes IV but the first 4 byte does not get incremented ater doFinal is called and throws the java.lang.IllegalStateException: Cannot re-use same key and IV for multiple encryptions exception. SecretKey secretKey = ... final Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding"); cipher.init(Cipher.ENCRYPT_MODE, secretKey); byte[] iv1 = encCipher.getIV(); byte[] ctext = encCipher.doFinal("a".getBytes());

问题 I need to set the following variables before invoking remote queue. System.setProperty("javax.net.ssl.trustStore","C:\\certs\\trustStore.jks"); System.setProperty("javax.net.ssl.keyStore","C:\\keystore\\keyStore.jks"); System.setProperty("javax.net.ssl.keyStorePassword","Demo1234"); System.setProperty("javax.net.ssl.trustStorePassword","Demo1234"); The passwords are exposed here. What is the best way to encrypt the passwords? 回答1: At some point, your private key/key store password must be

问题 Hi i want to encrypt some field in database when user create or edit data. IF create, the encryption work, but when user edit data, the value that save in database will be normal text not encrypted <?php namespace App\Traits; use Crypt; trait Encryptable { public function toArray() { $array = parent::toArray(); foreach ($array as $key => $attribute) { if (in_array($key, $this->encryptable) && $array[$key]!='') { try { $array[$key] = Crypt::decrypt($array[$key]); } catch (\Exception $e) { } }

问题 This question already has answers here : IllegalBlockSizeException when trying to encrypt and decrypt a string with AES (4 answers) Closed 3 years ago . I am trying to implement RSA encryption which is able to do the following: accept a string value as an input to encrypt using a public key return the encrypted cipher as string accept the encrypted cipher as an input to decrypt using a private key return the original value, decrypted I am able to get the encryption/decryption working if I

问题 I want to use codeigniter framework for my project but I dont want it readable, so i have to encrypt url like: http://myproject.com/index.php/indexcontroller/myaction/ into: http://myproject.com/as79d8a7sd9a8sd7a98d7a9s8d790akmwmwm97aw I dont know how to achieve such scenario. How controller and methods will be called and how it will be performed. Please guide me. 回答1: This sounds like a job for URI routing! Add this to your config/routes.php : $route['(:any)'] = "MyController/MyFunc/$1"; Now

问题 I want to use codeigniter framework for my project but I dont want it readable, so i have to encrypt url like: http://myproject.com/index.php/indexcontroller/myaction/ into: http://myproject.com/as79d8a7sd9a8sd7a98d7a9s8d790akmwmwm97aw I dont know how to achieve such scenario. How controller and methods will be called and how it will be performed. Please guide me. 回答1: This sounds like a job for URI routing! Add this to your config/routes.php : $route['(:any)'] = "MyController/MyFunc/$1"; Now

问题 I am trying to debug a simple openssl program but cannot quite get what openssl means with "oaep decoding error". I have reduced my program to this, test, one: #include <iostream> #include <openssl/evp.h> #include <openssl/rsa.h> #include <openssl/pem.h> #include <openssl/err.h> #include <assert.h> #include <memory> #include <list> #include <algorithm> #include <string.h> static const std::string private_key = R"(-----BEGIN RSA PRIVATE KEY----- MIIEogIBAAKCAQEAriDoH3gBbJo+SojeL5j

问题 I am trying to debug a simple openssl program but cannot quite get what openssl means with "oaep decoding error". I have reduced my program to this, test, one: #include <iostream> #include <openssl/evp.h> #include <openssl/rsa.h> #include <openssl/pem.h> #include <openssl/err.h> #include <assert.h> #include <memory> #include <list> #include <algorithm> #include <string.h> static const std::string private_key = R"(-----BEGIN RSA PRIVATE KEY----- MIIEogIBAAKCAQEAriDoH3gBbJo+SojeL5j

问题 I am trying to debug a simple openssl program but cannot quite get what openssl means with "oaep decoding error". I have reduced my program to this, test, one: #include <iostream> #include <openssl/evp.h> #include <openssl/rsa.h> #include <openssl/pem.h> #include <openssl/err.h> #include <assert.h> #include <memory> #include <list> #include <algorithm> #include <string.h> static const std::string private_key = R"(-----BEGIN RSA PRIVATE KEY----- MIIEogIBAAKCAQEAriDoH3gBbJo+SojeL5j

问题 Update Apparently, even though I thought I was generating keys that did not have a password, gnupg still expected a password for them (which the gnupg extension no longer supports). I regenerated a new keypair using Kleopatra on Windows and bypassed all the "no passphrase" warnings and I was able to successfully sign/encrypt with those keys. So, the bottom line is be very sure that your key does not have a passphrase. I am attempting to sign a message using PHP's gnupg extension. I have the