发明名称 |
Securing E-mail communications and encrypted file storage using yaksha split private key asymmetric cryptography |
摘要 |
A method is provided for securing stored files in a system having a plurality of system users with each system user having an associated asymmetric crypto-key with a public key portion and a corresponding private key portion. Each public key portion is accessible to the plurality of system users. Each private key portion has a first private key portion known only to the associated user and a corresponding second private key portion known only to a security server. Data to be stored is identified. A symmetric crypto-key is encrypted with only the second private key portion of a first user crypto-key to form an encrypted key message, thereby restricting access to the symmetric crypto-key to only the first user. The symmetric crypto-key is obtained by the first user by applying the first private key portion of the first user crypto-key to decrypt the encrypted key message. The first user encrypts the data with the symmetric crypto-key to form an encrypted file, and stores the encrypted file and the encrypted key message.
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申请公布号 |
US5748735(A) |
申请公布日期 |
1998.05.05 |
申请号 |
US19960663019 |
申请日期 |
1996.06.07 |
申请人 |
BELL ATLANTIC NETWORK SERVICES, INC. |
发明人 |
GANESAN, RAVI |
分类号 |
H04L9/08;H04L9/30;(IPC1-7):H04L9/08 |
主分类号 |
H04L9/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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