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The known-plaintext attack (KPA) is an attack model for cryptanalysis where the attacker has access to both the plaintext (called a crib) and its encrypted version ().These can be used to reveal secret keys and code books.
The development of CrypTool started in 1998. Originally developed by German companies and universities, it is an open-source project since 2001. [2]Currently 4 versions of CrypTool are maintained and developed: The CrypTool 1 (CT1) software is available in 6 languages (English, German, Polish, Spanish, Serbian, and French).
The Commercial National Security Algorithm Suite (CNSA) is a set of cryptographic algorithms promulgated by the National Security Agency as a replacement for NSA Suite B Cryptography algorithms. It serves as the cryptographic base to protect US National Security Systems information up to the top secret level, while the NSA plans for a ...
In cryptography, the simple XOR cipher is a type of additive cipher, [1] an encryption algorithm that operates according to the principles: . A 0 = A, A A = 0, A B = B A, (A B) C = A (B C),
RIPEMD (RIPE Message Digest) is a family of cryptographic hash functions developed in 1992 (the original RIPEMD) and 1996 (other variants). There are five functions in the family: RIPEMD, RIPEMD-128, RIPEMD-160, RIPEMD-256, and RIPEMD-320, of which RIPEMD-160 is the most common.
Cryptographic splitting, also known as cryptographic bit splitting or cryptographic data splitting, is a technique for securing data over a computer network.The technique involves encrypting data, splitting the encrypted data into smaller data units, distributing those smaller units to different storage locations, and then further encrypting the data at its new location. [1]
The most common definitions used in cryptography are indistinguishability under chosen-plaintext attack (abbreviated IND-CPA), indistinguishability under (non-adaptive) chosen-ciphertext attack (IND-CCA1), and indistinguishability under adaptive chosen-ciphertext attack (IND-CCA2). Security under either of the latter definition implies security ...
The security proof of the collision resistance was based on weakened assumptionsm, and eventually a second pre-image attack was found. FSB — Fast Syndrome-Based hash function —it can be proven that breaking FSB is at least as difficult as solving regular syndrome decoding , which is known to be NP-complete.
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