Saving and retrieving data based on symmetric key encryption

Details Saving and retrieving data based on symmetric key encryption Saving and retrieving data based on symmetric key encryption

G - Physics

06

F

G06F 21/24 (2006.01) H04K 1/02 (2006.01) H04L 9/28 (2006.01)

Patent

CA 2425006

In accordance with certain aspects, data is received from a calling program. Ciphertext that includes the data is generated, using a symmetric cipher, in a manner that allows only one or more target programs to be able to obtain the data from the ciphertext. In accordance with other aspects, a bit string is received from a calling program. An identifier of the calling program is checked to determine whether the calling program is allowed to access data encrypted in ciphertext of the bit string. The integrity of the data is also verified, and the data is decrypted using a symmetric key. The data is returned to the calling program only if the calling program is allowed to access the data and if the integrity of the data is successfully verified.

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