Steganography on iOS and macOS

Related tags

Media Processing Pictograph
Overview

Pictograph

Pictograph is the best steganography app available for iOS and macOS. Easily send hidden messages to anyone you want. You can even encrypt the messages with a password.

Note: This project was compiled using Xcode 9. If you're still using Xcode 8, use this commit: 861deaa163d121af2b7058afe9d50f45b73dba96.

Contents

Downloading

You can download Pictograph Mac here. You can get Pictograph iOS on the App Store here.

Steganography

Steganography is the practice of hiding messages in plain sight. Pictograph works by changing the least significant bits in each pixel in a specific way so that a message can be hidden. Because Pictograph only changes the least significant bits in a pixel, the change is imperceptible to human eyes.

Encryption

AES-256 encryption is used in Pictograph when encryption is enabled. This encryption is incredibly hard to break, so rest assured your message will be safe if you choose to encrypt it.

Pictograph uses the publicly available RNCryptor library for encryption and decryption.

Author

My name is Adam Boyd.

Your best bet to contact me is on Twitter. @MrAdamBoyd

My website is adamjboyd.com.

Changelog

1.0: Initial Release

1.1: iPad support

1.2: Night mode

1.3: Simplified UI

1.4: Ability to hide images

1.5: iOS 11 support/design changes

1.6: Ability to hide a message and an image at the same time

License

MIT

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Comments
  • cant use encryption

    cant use encryption

    Hello thnks from the great app but i cant us the encryption method. I type a password and a msg box appears saying no encryption key? Any clue? Thank you

    opened by moh1122 0
Releases(1.6)

  • 1.6(Oct 15, 2017)

    Big update! This update includes major changes to the UI and the way messages and images are hidden within images.

    Image Coder

    • As written above, the image coder now supports encoding an image and message at the same time in the same image. This required a few changes.
    • The information bits about an image are now longer. It now looks like this: <16 bits for settings><64 bits for message length><64 bits for image length>. The bits for message length and image length are always included, even if they are 0. So if the message length is 0, the image data starts on the bit after the bits for image length.
    • There is now an enum for the settings bits, defined as this:
    typedef NS_ENUM(NSInteger, PictographEncodingOptions)
{
    PictographEncodingOptionsNone = -1,
    PictographEncodingOptionsUnencryptedMessage,
    PictographEncodingOptionsEncryptedMessage,
    PictographEncodingOptionsUnencryptedImage,
    PictographEncodingOptionsUnencryptedMessageWithImage,
    PictographEncodingOptionsEncryptedMessageWithImage
};

    UI

    • Only two buttons on home screen now, down from three, one for encoding a message/image in an image and another for decoding a message/image in an image.
    • Now when you tap encode, a new popup appears that lets you input an image to hide as well as an image to encode.
    • The popup that appeared when you revealed an image used to only appear when there was an image to show, but now it always shows. There is an additional field to show any hidden messages.
    Source code(tar.gz)
    Source code(zip)
Owner
Adam Boyd
Days since integer overflow errors: -1
Adam Boyd
GitHub https://mradamboyd.github.io/Pictograph
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