cannot decrypt String from text file [closed]

In my journey to mastering Java, I started doing some AES encryption and decryption, but ran into some problems. I can encrypt and decrypt just fine using my 2 methods below. public static byte[] …

Decrypt using AES-256-ECB in Java

I have encrypted the string in PHP using AES-256-ECB. $sString = “test” $sEncryptionMethod = “AES-256-ECB”; $sEncryptionKey = “mysecretkey”; openssl_encrypt($sString, $…

Decrypt a Java AES encoded String in Dart

I need to decrypt an AES (PKCS#7) encoded string in my Flutter mobile application. The string is got from a QR Code, which has been generated from a Java application and contains the AES encoded …

Seeking in AES-CTR-encrypted input

As AES in CTR mode is great for random access, lets say I have a data source created with a CipherOutputStream in AES-CTR mode. The library underneath—which is not mine—uses a RandomAccessFile that …

Java 256-bit AES Password-Based Encryption

I need to implement 256 bit AES encryption, but all the examples I have found online use a “KeyGenerator” to generate a 256 bit key, but I would like to use my own passkey. How can I create my own key?…