METHOD FOR AUTHENTICATION OF ELECTRONIC IMAGE JPEG (OPTIONS)

摘要

1. A method for electronic image JPEG authentication, comprising the steps that the sender and recipient of preformed binary sequence a private key and a cryptographic function, the sender electronic separated on M≥2 JPEG image blocks each of size n1 × n2 pixels where n1≥2 and n2≥2, on every m-m, where m = 1, 2, ..., m, the electronic image block JPEG perform wavelet transformation resulting from the wavelet transform coefficients are quantized and converted into binary sequence wavelet koe ffitsientov electronic image m-th block JPEG, which is converted into N≥2 ordered sequence of binary electronic image wavelet coefficients m-th block JPEG, calculated binary sequence digital watermark electronic image m-th block JPEG preformed using a cryptographic function and binary sequence a secret key, authenticate the m-th JPEG electronic imaging unit, which is inserted into a binary sequence of a digital watermark e m-th block ics JPEG image into an ordered binary sequence of wavelet coefficients of this block, and the received ordered binary sequences wavelet coefficients embedded binary sequence of a digital watermark m-th electronic image block JPEG encoded using arithmetic encoding in the encoded sequence of this block, the authentication action at the sender e JPEG image blocks is repeated until the completion of their receipt, transmitting autentif