Authors:
Dijana Vukovic
1
;
Danilo Gligoroski
2
and
Zoran Djuric
3
Affiliations:
1
Norweigan University of Science and Technology - NTNU and Faculty of Electrical Engineering, Norway
;
2
NTNU, Norway
;
3
Faculty of Electrical Engineering, Bosnia and Herzegovina
Keyword(s):
Internet Surveillance, Diffie-Hellman Key Exchange, Privacy, Chat Communication.
Related
Ontology
Subjects/Areas/Topics:
Applied Cryptography
;
Cryptographic Techniques and Key Management
;
Data Engineering
;
Databases and Data Security
;
Ethical and Legal Implications of Security and Privacy
;
Information and Systems Security
;
Privacy Enhancing Technologies
;
Security and Privacy in Web Services
;
Security and Privacy Policies
Abstract:
Snowden's whistleblower from the last year made people more aware of the fact that we are living in the Internet surveillance era. Privacy of Internet communication has been disrupted. In this paper, application for privacy protection in chat communication, named CryptoCloak, is presented. CryptoCloak provides privacy protection for chat communication. Encrypted communication is masked with dynamic cheap chat conversation. Communication made this way is not point of interest for mass surveillance spying engines. For implementation of the CryptoCloak, Facebook Messenger API is used. Diffie-Hellman key exchange is done in clandestine manner - instead of sending uniform sequence of numbers, sentences are sent. Current version provides encryption/decryption mechanism for the chat communication using strong symmetric algorithm AES in CBC mode. 256 bits of Diffie-Hellman exchanged key are used for AES-CBC.