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Off-the-Record Messaging, a cryptographic technique providing true deniability for instant messaging. OpenPuff, freeware semi-open-source steganography for MS Windows. StegFS, the current successor to the ideas embodied by the Rubberhose and PhoneBookFS filesystems. Vanish, a research prototype implementation of self-destructing data storage.
It is important to note that traditional database encryption techniques normally encrypt and decrypt the contents of a database. Databases are managed by "Database Management Systems" (DBMS) that run on top of an existing operating system (OS). [15]
In cryptography, truncated differential cryptanalysis is a generalization of differential cryptanalysis, an attack against block ciphers. Lars Knudsen developed the technique in 1994. Whereas ordinary differential cryptanalysis analyzes the full difference between two texts, the truncated variant considers differences that are only partially ...
In cryptography, deniable authentication refers to message authentication between a set of participants where the participants themselves can be confident in the authenticity of the messages, but it cannot be proved to a third party after the event. [1] [2] [3]
Cryptography, or cryptology (from Ancient Greek: κρυπτός, romanized: kryptós "hidden, secret"; and γράφειν graphein, "to write", or -λογία-logia, "study", respectively [1]), is the practice and study of techniques for secure communication in the presence of adversarial behavior. [2]
In cryptography, the Double Ratchet Algorithm (previously referred to as the Axolotl Ratchet [2] [3]) is a key management algorithm that was developed by Trevor Perrin and Moxie Marlinspike in 2013. It can be used as part of a cryptographic protocol to provide end-to-end encryption for instant messaging .
A patient attacker can capture a conversation whose confidentiality is protected through the use of public-key cryptography and wait until the underlying cipher is broken (e.g. large quantum computers could be created which allow the discrete logarithm problem to be computed quickly). This would allow the recovery of old plaintexts even in a ...
The protocol offers forward secrecy and cryptographic deniability. It operates on an elliptic curve. [16] The protocol uses five public keys. Alice has an identity key IK A and an ephemeral key EK A. Bob has an identity key IK B, a signed prekey SPK B, and a one-time prekey OPK B. [16]