encryption

问题 I'm using the openssl_encrypt / decrypt method in my website but i'm having some troubles with the $tag option openssl_encrypt ( $data, $method, $key, $options, $iv, $tag ) openssl_decrypt ( $data, $method, $key, $options, $iv, $tag ) from http://php.net/manual/en/function.openssl-encrypt.php, the definition of tag is: The authentication tag passed by reference when using AEAD cipher mode (GCM or CCM). But i didn't understand it. I tried it in my codes $data = "text to be encrypted"; $cipher

问题 I'm using the openssl_encrypt / decrypt method in my website but i'm having some troubles with the $tag option openssl_encrypt ( $data, $method, $key, $options, $iv, $tag ) openssl_decrypt ( $data, $method, $key, $options, $iv, $tag ) from http://php.net/manual/en/function.openssl-encrypt.php, the definition of tag is: The authentication tag passed by reference when using AEAD cipher mode (GCM or CCM). But i didn't understand it. I tried it in my codes $data = "text to be encrypted"; $cipher

问题 I'm using the openssl_encrypt / decrypt method in my website but i'm having some troubles with the $tag option openssl_encrypt ( $data, $method, $key, $options, $iv, $tag ) openssl_decrypt ( $data, $method, $key, $options, $iv, $tag ) from http://php.net/manual/en/function.openssl-encrypt.php, the definition of tag is: The authentication tag passed by reference when using AEAD cipher mode (GCM or CCM). But i didn't understand it. I tried it in my codes $data = "text to be encrypted"; $cipher

问题 I'm using the openssl_encrypt / decrypt method in my website but i'm having some troubles with the $tag option openssl_encrypt ( $data, $method, $key, $options, $iv, $tag ) openssl_decrypt ( $data, $method, $key, $options, $iv, $tag ) from http://php.net/manual/en/function.openssl-encrypt.php, the definition of tag is: The authentication tag passed by reference when using AEAD cipher mode (GCM or CCM). But i didn't understand it. I tried it in my codes $data = "text to be encrypted"; $cipher

问题 I`m working on mobile app with React Native and Expo, providing security solutions. Project owner want to store in app sensitive authorization keys, used to contact with REST server and access to secured data. He demand to have this keys at least encrypted, and hard to read from outside as much as possible. I know about topis: Save sensitive data in React Native Is React Native's Async Storage secure? and about KeyChain , but they dont cover encyption and expo issues. So with is the best and

问题 I am looking for settings/parameters of CryptoKit which will allow me to share data between iOS App and a Java Application. The flow would be something like below: - Use CryptoKit to encrypt a text using a fixed key and random initialization vector (IV). - In the Java application use standard javax libraries to perform the decryption using the same fixed key. The random IV will be transported/shared with the application along with the encrypted text. Similarly, the reverse is also required,

问题 I have run a simple test to measure the AES-GCM performance in Java 9 , by encrypting byte buffers in a loop. The results were somewhat confusing. The native (hardware) acceleration seems to work - but not always. More specifically, When encrypting 1MB buffers in a loop, the speed is ~60 MB/sec for the first ~50 seconds. Then it jumps to 1100 MB/sec, and stays there. Does JVM decide to activate the hardware acceleration after 50 seconds (or 3GB of data)? can it be configured? Where can I read

问题 Android code String apiResponse = "EcUZvMif Method: protected void decryptDataWithAES(String apiResponse, String key) { try { es(StandardCharsets.UTF_8); byte[] decodedResult = Base64.decode(apiResponse, Base64.NO_WRAP); terSpec = new IvParameterSpec(first16ByteArray); SecretKeySpec skey = new SecretKeySpec(byteArray, "AES"); Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); cipher.init(DECRYPT_MODE, skey, ivParameterSpec); String decryptString = new String(cipher.doFinal(byteArray)

问题 I am creating an BLE connection between a ble device and a mobile. the connection is first unsecured but will be updated to LESC just works from device side. This works fine so far. In Android (target SDK 28) I want to check (better getting an callback) if bluetooth connection is encrypted. I am using a BLE UART Service example. I have access to an BluetoothGatt and BluetoothDevice object. But all methods, variables I found are either private or @SystemApi. Can anyone help? Following some

问题 I'm trying to convert Encryption/Decryption methods from managed .NET to WinRT version for use in Windows Store app. The managed .NET encryption methods are already used largely in production, so the assumption is they work correctly. This is the managed .NET encryption method: public static byte[] iv = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0 }; public static void EncryptFile(string sInputFilename, string sOutputFilename, string sKey) { FileStream fsInput = null; FileStream fsOutput = null;