Known-plaintext attack to optical encryption systems with space and polarization encoding

A Known Plaintext Attack on Two-Key Triple Encryption

A chosen-plaintext attack on two-key triple encryption noted by Merkle and Hellman is extended to a known-plaintext attack. The known-plaintext attack has lower memory requirements than the chosen-plaintext attack, but has a greater running time. The new attack is a significant improvement over a known-plaintext brute-force attack, but is still not seen as a serious threat to two-key triple enc...

Known Plaintext Attack

In cryptography, the known plaintext attack, or KPA, is an attack based on having samples of both the plaintext and corresponding encrypted or ciphertext for that information available. This information is used to conduct an analysis of the data in order to determine the secret key used to encrypt and decrypt the information. Historical ciphers are very susceptible to the attack, while modern-d...

Applying Quantum Search to a Known-Plaintext Attack on Two-Key Triple Encryption

The process of disguising a plaintext into ciphertext is called encryption and back into plaintext is called decryption. A cryptographic algorithm, is also called a cipher, is the mathematical function used for encryption and decryption. Many algorithms are available for this purpose. Triple DES is such an algorithm. Encryption using triple DES is possible in two different ways; they are triple...

Known Plaintext Correlation Attack against RC5

Known-Plaintext-Only Attack on RSA-CRT with Montgomery Multiplication

The paper describes a new attack on RSA–CRT employing Montgomery exponentiation. Given the amount of so-called final subtractions during the exponentiation of a known message (not chosen, just known), it creates an instance of the well known Hidden Number Problem (HNP, [2]). Solving the problem reveals the factorization of RSA modulus, i.e. breaks the scheme. The main advantage of the approach ...