Method for authentication of JPEG image data

Details Method for authentication of JPEG image data Method for authentication of JPEG image data

2007-12-25

2007-12-25

Barrón, Jr., Gilberto (Department: 2132)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S176000, C380S203000

Reexamination Certificate

active

10200819

ABSTRACT:
A method enables a recipient of JPEG image data to authenticate the JPEG image data by producing a hashing function from a first section of the JPEG image data. A first integrity checking value is produced from the hashing function produced from the first section of JPEG image data and, from a least significant transmitted bit-plane of a second section of the JPEG image data, an embedded encrypted signature string is extracted and decrypted to generate a second integrity checking value. The first and second integrity checking values are compared and the first section of the JPEG image data is authenticated when the second integrity checking value matches the first integrity checking value.

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