Encryption and decryption information system
The invention discloses a file encryption method and device and a file decryption method and device. The file encryption method comprises the steps: receiving a file downloading request transmitted bya client, and obtaining a corresponding target file according to the file downloading request; deter...
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| creator | BI SHUKE TENG JIE LIU YONGJUN SU XIAOYANG YU BO LIU YING SHI GAOJIE LIN HAILONG LYU JIACHENG JIANG JIE LI WEI SHI FEI YU XIAOBO HU HONGQIANG LI XIUHONG PAN YONGBO GONG BENBO LIU YUBO CONG TAO YU ZHANWEN KONG WEITAO |
| description | The invention discloses a file encryption method and device and a file decryption method and device. The file encryption method comprises the steps: receiving a file downloading request transmitted bya client, and obtaining a corresponding target file according to the file downloading request; determining the confidentiality level of the target file; when the confidentiality level of the target file is a first-level confidentiality level, generating a group of temporary key pairs; encrypting the first key by using a pre-stored server private key and a public key of the client, obtaining a first encrypted file, and transmitting the first encrypted file to the client, so as to enable the client to decrypt the first encrypted file by using a pre-stored server public key corresponding to theserver private key and a client private key corresponding to the public key of the client to obtain a first secret key; and encrypting the target file by using the second key to obtain a second encrypted file, and transmitting |
| format | Patent |
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The file encryption method comprises the steps: receiving a file downloading request transmitted bya client, and obtaining a corresponding target file according to the file downloading request; determining the confidentiality level of the target file; when the confidentiality level of the target file is a first-level confidentiality level, generating a group of temporary key pairs; encrypting the first key by using a pre-stored server private key and a public key of the client, obtaining a first encrypted file, and transmitting the first encrypted file to the client, so as to enable the client to decrypt the first encrypted file by using a pre-stored server public key corresponding to theserver private key and a client private key corresponding to the public key of the client to obtain a first secret key; and encrypting the target file by using the second key to obtain a second encrypted file, and transmitting</abstract><oa>free_for_read</oa></addata></record> |
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| language | chi ; eng |
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| subjects | CALCULATING COMPUTING COUNTING ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY PHYSICS TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION |
| title | Encryption and decryption information system |
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