Patent
Encryption technique using stream cipher and block cipher
Charles M. Doland
- 01 Dec 1998
38
TL;DR: In this paper, a pseudo-random sequence of integers is generated by selecting the least significant bit from each integer value and then used to encrypt a message using a selected encryption algorithm such as the XOR algorithm.
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Abstract: A method is provided for generating a pseudo-random sequence of integers, and the method is applied to the encryption of messages. The method uses a key K and a pair of prime numbers p and q, where q=2p+1. According to one aspect of the invention, a sequence of integers is formed. A sequence of bits is then formed from the sequence of integers, e.g., by selecting the least significant bit from each integer value. The sequence of bits is then used to encrypt a message using a selected encryption algorithm such as the XOR algorithm. Since prime numbers p and q can be selected to be larger than key K, the repeating period of the sequence of integers is larger than that permitted by the bit length of K.
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Citations
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Intelligent security control system for virtualized ecosystems
Renata Budko,Hemma Prafullchandra,Eric Ming Chiu,Boris Strongin +3 more
- 31 Dec 2008
TL;DR: In this paper, the authors define and analyse object handling security control information for one or more logical resources in the virtualized ecosystem and derive object properties for each of the logical resources involved in the execution of a virtual machine in any given context within the virtualised ecosystem.
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Patent
Cryptographic apparatus and method
Soichi Furuya,Michael Roe +1 more
- 22 Jun 1999
TL;DR: In this article, a mixing function is used to combine a pseudo-random number generator with a plaintext message to produce a block-by-block ciphertext, which preserves the advantages of a block cipher in terms of data confidentiality and data integrity, as well as benefiting from the speed advantage of a stream cipher.
66
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Method and system for performing perfectly secure key exchange and authenticated messaging
Paul McGough
- 18 Apr 2005
TL;DR: In this article, a system and method for the cryptographic exchange of information is provided which affords maximum security, process simplicity and participant convenience to any software application, business process or device used to communicate messages.
66
Patent
Method and system for unified mobile content protection
Raj Nair,Mikhail Mikhailov +1 more
- 16 Aug 2010
TL;DR: In this article, the authors proposed a client-server architecture with a symmetric (private-key) encryption scheme, where a media preparation server (MPS) encrypts media content and publishes and stores it on a content delivery server (CDS), such as a server in a content distribution network (CDN).
64
Patent
Randomization-based encryption apparatus and method
David L. Michaelsen
- 22 Apr 2004
TL;DR: In this paper, a method for encryption data subdivided into segments of random lengths is proposed, where a data source consists of random pattern generation machines (RPGMs). And the data source may output patterns interpreted to govern the behavior of obfuscation operations.
40
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Ronald L. Rivest,Adi Shamir,Leonard M. Adleman +2 more
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TL;DR: In this paper, a message-to-be-transferred message is enciphered to ciphertext at the encoding terminal by first encoding the message as a number M in a predetermined set, and then raising that number to a first predetermined power (associated with the intended receiver) and finally computing the remainder, or residue, C, when the exponentiated number is divided by the product of two predetermined prime numbers associated with intended receiver.
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Patent
Cipher mechanisms with fencing and balanced block mixing
Terry F. Ritter
- 30 Jan 1995
TL;DR: An enhanced cryptographic mechanism employs Latin square derived balanced size-preserving block mixers and strong, practical fencing arrays of substitution mechanisms in combination with each other and with block ciphers as discussed by the authors.
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Patent
Method and system for performing secure electronic messaging
Paul McGough
- 04 Sep 1997
TL;DR: Secure Electronic Messaging System (SEMS) as discussed by the authors is based on the simple mathematics for secure electronic monetary transactions that translates source numbers into encrypted cipher numbers and then uses a series of equations to encrypt the numbers.
51
Patent
Fast server-aided computation system and method for modular exponentiation without revealing client's secret to auxiliary device
Shinichi Kawamura,Atsushi Shimbo +1 more
- 31 Mar 1993
TL;DR: The most reliable server-aided computation system and method where a client request a server to perform modular exponentiation computation without revealing a cleint's secret to the server is presented in this article.
17
An implementation for a fast public-key cryptosystem
TL;DR: This paper examines the development of a high-speed implementation of a system to perform exponentiation in fields of the form GF(2n) for sufficiently large n, which has applications in public-key cryptography.
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