CenoCipher - Easy-To-Use, End-To-End Encrypted Communications Tool

CenoCipher is a free, open-source, easy-to-use tool for exchanging secure encrypted communications over the internet. It uses strong cryptography to convert messages and files into encrypted cipher-data, which can then be sent to the recipient via regular email or any other channel available, such as instant messaging or shared cloud storage.

Features at a glance

• Simple for anyone to use. Just type a message, click Encrypt, and go
• Handles messages and file attachments together easily
• End-to-end encryption, performed entirely on the user's machine
• No dependence on any specific intermediary channel. Works with any communication method available
• Uses three strong cryptographic algorithms in combination to triple-protect data
• Optional steganography feature for embedding encrypted data within a Jpeg image
• No installation needed - fully portable application can be run from anywhere
• Unencrypted data is never written to disk - unless requested by the user
• Multiple input/output modes for convenient operation

Technical details

• Open source, written in C++
• AES/Rijndael, Twofish and Serpent ciphers (256-bit keysize variants), cascaded together in CTR mode for triple-encryption of messages and files
• HMAC-SHA-256 for construction of message authentication code
• PBKDF2-HMAC-SHA256 for derivation of separate AES, Twofish and Serpent keys from user-chosen passphrase
• Cryptographically safe pseudo-random number generator ISAAC for production of Initialization Vectors (AES/Twofish/Serpent) and Salts (PBKDF2)

Version History (Change Log)

Version 4.0 (December 05, 2015)

• Drastically overhauled and streamlined interface
• Added multiple input/output modes for cipher-data
• Added user control over unencrypted disk writes
• Added auto-decrypt and open-with support
• Added more entropy to Salt/IV generation

Version 3.0 (June 29, 2015)

• Added Serpent algorithm for cascaded triple-encryption
• Added steganography option for concealing data within Jpeg
• Added conversation mode for convenience
• Improved header obfuscation for higher security
• Increased entropy in generation of separate salt/IVs used by ciphers
• Many other enhancements under the hood

Version 2.1 (December 6, 2014)

• Change cascaded encryption cipher modes from CBC to CTR for extra security
• Improve PBKDF2 rounds determination and conveyance format
• Fix minor bug related to Windows DPI font scaling
• Fix minor bug affecting received filenames when saved by user

Version 2.0 (November 26, 2014)

• Initial open-source release
• Many enhancements to encryption algorithms and hash functions

Version 1.0 (June 10, 2014)

• Original program release (closed source / beta)

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