Showing papers on "Null cipher published in 2007"
Patent•
IBM1
TL;DR: In this article, an encryption method is proposed that encrypts a clear text twice using a first encryption engine to produce a first cipher text and a second encryption engine for the second cipher text.
Abstract: An encryption method encrypts a clear text twice using a first encryption engine to produce a first cipher text and a second encryption engine to produce a second cipher text. The method compares the first cipher text with the second cipher text, or compares a checksum of the first cipher text with a checksum of the second cipher text. If the comparison succeeds, the method transmits the data. In some embodiments, the method uses a first instance of an encryption key to produce the first cipher text and a second instance of the encryption key to produce the second cipher text.
9 citations
1 Jan 2007
TL;DR: The basic computing operations, e.g., inserting dummy symbols, rotating, transposition, shifting and complement, are applied in the proposed algorithm to encrypt plaintext to cipher text.
Abstract: In this paper, we propose an encryption algorithm to encrypt plaintext to cipher text. We apply the basic computing operations, e.g., inserting dummy symbols, rotating, transposition, shifting and complement, in the proposed algorithm to encrypt plaintext to cipher text. The cipher text contains the plaintext, relative data and tables of encryption and transmits through the network. Since the tables of cipher text are produced randomly, it is difficult to do cryptanalysis.
4 citations
1 Feb 2007
TL;DR: An encryption algorithm which encrypts the first part of the plaintext and the key of the second part to a cipher text is proposed, which is secure for the cipher text transmitted through the network and difficult for cryptanalysis.
Abstract: A plaintext is separated into two parts, a fixed length part and a variable length part. The second part of the plaintext is encrypted to a cipher text using a key. In this paper, an encryption algorithm which encrypts the first part of the plaintext and the key of the second part to a cipher text is proposed. Basic computing operations, such as inserting dummy symbols, rotating, transposition, shifting, and complementation, are applied to encrypt plaintext to cipher text. The key used to encrypt the second part of cipher text can be retrieved by decryption of the first part of cipher text . It is secure for the cipher text transmitted through the network since the tables of cipher text are produced randomly and it is difficult to carry out cryptanalysis.
2 citations
1 Jan 2007
TL;DR: This paper divides plaintext into numeric and non-numeric fields and uses the encryption algorithm to produce cipher text, which contains the final symbol table, relative data, relative tables, control byte and the field of format code to design the different combination of tables and data.
Abstract: In this paper, we propose an encryption algorithm to encrypt plaintext to cipher text We divide plaintext into numeric and non-numeric fields, also, we pack the numeric fields to produce packed numeric table and combine it with symbol fields to produce the new plaintext We apply the basic computing operations, eg, inserting dummy symbols, rotating, transposition, shifting and complement, in the proposed algorithm to encrypt plaintext to cipher text The produced the cipher text which contains the plaintext, relative data and tables of encryption is transmitted to the receiver through the network We also propose the cryptanalysis about these algorithms It can be shown that the proposed algorithm is more secure in network security Keywords—Data transmission; Cipher text, Plaintext, Network security environment Lee and Lee (9) propose cipher text containing data and key to be transmitted in network security In this study, we extend the method to separate the plaintext to numeric and non-numeric fields and use the encryption algorithm to produce cipher text The cipher text contains the final symbol table, relative data, relative tables, control byte and the field of format code to design the different combination of tables and data In order to decrypt, we should know the location of format code and different combination of format code We also propose the cryptanalysis about these algorithms We can show that the proposed processes are more difficult to do cryptanalysis