Sentence examples for key cipher from inspiring English sources

The 40-bit key cipher systems approved for use in the 1990s were eventually made insecure, as is mentioned in the section Cryptology: Cryptology in private and commercial life.

In the proposed system, a multi-shift cipher algorithm is also used to enhance the security and the key cipher is chosen as one of the chaos states.

He explicitly differentiates the Vernam cipher from earlier ciphers: "A running key cipher is a Vernam type system where, in place of a random sequence of letters, the key is a meaningful text.

Now it is known that running key ciphers can usually be solved uniquely".

The extended XOR Lemma has applications in the design of substitution boxes or S-boxes used in secret key ciphers.

He also had a lifelong fascination with keys, ciphers, and mechanical dolls (automatons).

The second method of solving running-key ciphers is commonly known as the probable-word method.

Their hollering could be heard on the steps of a nearby lecture hall, where a group of bleary-eyed cryptographers, dressed in shorts and rumpled T-shirts, muttered about symmetric-key ciphers over steaming cups of coffee.

This version of the Vernam cipher system was adopted and employed by the U.S. Army until Major Joseph O. Mauborgne of the Army Signal Corps demonstrated during World War I that a cipher constructed from a key produced by linearly combining two or more short tapes could be decrypted by methods of the sort employed to cryptanalyze running-key ciphers.

One important element in the hardware is the random number generator because it generates keys for symmetric-key/public-key ciphers.

Table 1 Comparison with other related works   Traceability Supporting monotone access structures Key delegation Cipher delegation Reference [11] √ √ × × Reference [14] × √ √ × Reference [26] √ √ × × Reference [27] √ √ × × Reference [28] √ √ × × Reference [29] √ √ × × Our work √ √ √ √.