A data encryption and retrieval method for database
A data retrieval and database technology, applied in the field of database data encryption and retrieval, can solve problems such as illegal capture of statements, meaningless operations, anti-decryption, etc., to achieve the effect of ensuring correctness and avoiding full table scanning
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[0024] The present invention will be further described below with reference to the drawings and embodiments.
[0025] figure 1 It is a schematic diagram of the data encryption process used in the database of the present invention.
[0026] See figure 1 , The data encryption method for database provided by the present invention includes the following steps:
[0027] Step 101: First use a one-way encryption algorithm to encrypt the original data, and generate a non-decrypted indexable header while keeping the original data sequence unchanged; the one-way encryption algorithm can be MD5, SHA or HMAC, etc. In the existing algorithm, the one-way encryption algorithm can not only keep the original data sequence unchanged to generate an indexable header, but also ensure that the index header is irreversible and undecryptable.
[0028] Step 102: Then continue to encrypt the original data to generate decryptable ciphertext data; such as AES, ARIA, SEED, TDES or DES and other symmetric key encr...
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