최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0246079 (2002-09-17) |
발명자 / 주소 |
|
대리인 / 주소 |
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인용정보 | 피인용 횟수 : 24 인용 특허 : 414 |
Improved system and approaches for decentralized key generation are disclosed. The keys that can be generated include both public keys and private keys. The public keys are arbitrary strings that embed or encode access restrictions. The access restrictions are used to enforce access control policies
Improved system and approaches for decentralized key generation are disclosed. The keys that can be generated include both public keys and private keys. The public keys are arbitrary strings that embed or encode access restrictions. The access restrictions are used to enforce access control policies. The public keys are used to encrypt some or all portions of files. The private keys can be generated to decrypt the portions of the files that have been encrypted with the public keys. By generating keys in a decentralized manner, not only are key distribution burdens substantially eliminated but also off-line access to encrypted files is facilitated.
What is claimed is: 1. A method for encrypting a file, comprising:producing, using a processing device, an access rules string having embedded therein access rules to be imposed for restricting access to the file;generating, using the processing device, a public key derived from the access rules str
What is claimed is: 1. A method for encrypting a file, comprising:producing, using a processing device, an access rules string having embedded therein access rules to be imposed for restricting access to the file;generating, using the processing device, a public key derived from the access rules string; andencrypting, using the processing device, at least a portion of the file using the public key, such that the public key, in a form used to encrypt the portion of the file, contains the access rules string embedded therein and extractable therefrom when decrypting the portion of the file.
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