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Software protection device

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04L-009/02
출원번호 US-0768717 (1985-08-23)
우선권정보 GB-0021418 (1984-08-23)
발명자 / 주소
  • Chorley Bernard J. (Hampton GB2) Parkin Graeme I. P. (London GB2) Wichmann Brian A. (Woking GB2) Elsom Simon M. (Feltham GB2)
출원인 / 주소
  • National Research Development Corp. (London GB2 07)
인용정보 피인용 횟수 : 248  인용 특허 : 6

초록

In order to prevent the unauthorized copying of software, a software module is encrypted using the data encryption standard (DES) algorithm, and the key is encrypted using the public key of a public/private key algorithm. To use the module it is entered into a software protection device where the pr

대표청구항

Apparatus for use in protecting wherein the software is independent of the operating system of a host computer comprising first storage means adapted to contain at least one decryption key, second storage means containing instructions for decrypting another key using a key held in the first storage

이 특허에 인용된 특허 (6)

  1. Arnold, Mark G.; Winkel, Mark D., Computer systems to inhibit unauthorized copying, unauthorized usage, and automated cracking of protected software.
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  5. Gerson I. Steve (Dallas TX), Memory protection system.
  6. Bright Herbert S. (Bethesda MD) Enison Richard L. (San Pablo CA), Security system for data processing.

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