Your best bet to contact me is on Twitter. Pictograph uses the publicly available RNCryptor library for encryption and decryption. This encryption is incredibly hard to break, so rest assured your message will be safe if you choose to encrypt it. EncryptionĪES-256 encryption is used in Pictograph when encryption is enabled. Because Pictograph only changes the least significant bits in a pixel, the change is imperceptible to human eyes. Pictograph works by changing the least significant bits in each pixel in a specific way so that a message can be hidden. Steganography is the practice of hiding messages in plain sight. You can get Pictograph iOS on the App Store here. Note: This project was compiled using Xcode 9. You can even encrypt the messages with a password. Easily send hidden messages to anyone you want. Pictograph is the best steganography app available for iOS and macOS.