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This is to certify that your paper entitled «Design and Implementation of a New Hmac Algorithms Based on New Hash Functions Like Blake and Grostl to Increase Security» was indexed with 8 pages, in the CIVILICA citation database, code COI:ICOEM01_024, after evaluation and approval of the referees of the "The 7th International Conference on Economics and Management 2016.

While offering our congratulations on the indexation of your paper, please be informed that this certificate is prepared based on the information submitted by the secretariat of the above conference and the information contained in the CIVILICA database, and the accuracy of its content can be inquired at any time through link provided at the bottom of the page or scanning the code image.