Cryptograpy Exam 1. What are some threats associated with a direct digital signature scheme? a. The scheme validation is dependent on the security of the sender’s private key, which the sender can later claim lost or stolen and that the signature was forged when trying to deny sending a particular message. b. If a private key is stolen from Bob at time t, the thief can send a message signed with Bob’s signature with a time stamp equal to or less than t. c. The need for trust between 2 participants
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Abstract. The speech signal enhancement is needed to obtain clean speech signal from noisy signal. For multimodal optimization we better to use natural-inspired algorithms such as Firefly Algorithm (FA). We compare the firefly algorithm with particle swarm optimization technique. The proposed algorithm contains three module techniques. Those are preprocessing module, optimization module and spectral filtering module. The signals are taken from Loizou’s database and Aurora database for evaluating
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television on their computer. * The customer wants to be able to watch DVD and Blu-Ray movies on the computer. * The customer wants to be able to scan, upload, edit, and print photographs and videos. * The customer already has a digital camera available to him and would like to be able to easily transfer photos from the memory card of his camera to his computer (his camera is using SDHC card) * The customer has family on the opposite coast and wants to be able to have video
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Form 35 [See rule 61 (1)] NOTICE OF TERMINATION OF AN AGREEMENT OF HIREPURCHASH/LEASE/HYPOTHECATION (To be made in duplicate and in triplicate where the original Registering Authority is different, the duplicate copy and the triplicate copy with the endorsement of the Registering Authority to returned to the Financier and Registering Authority simultaneously on making the termination entry in the certificate of the Registration and Form 24) To The Registering Authority ------------------------------------------------------------We
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Dear granny. As you know, I’m taking the Digital electronics class at my school. We are doing this project where we create a system to calculate majority vote. with the system we used variables to take the place as the president, vice president, secretary, and treasurer. the way we started this was we had to use binary where zero is a no vote, while a one is a yes vote. whenever it would be a tie, the president's vote would be the tie breaker. so if the vice president, and the secretary voted yes
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Electronic contracts and electronic signatures are just as legal and enforceable as traditional paper contracts signed in ink. Federal legislation enacted in 2000, known as the Electronic Signatures in Global and International Commerce act (ESGICA), removed the uncertainty that earlier afflicted e-contracts. This 2000 e-signature law made electronic contracts and signatures as legally valid as paper contracts, which was great news for companies that conduct business online, mainly companies that
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cryptographic method based on elliptic curves over finite fields. The elliptic curves defined over finite fields are used in elliptic curve cryptography since a practical digital system can handle only finite number of values. In finite fields the binary extensions fields are ideal, because of the ease with which they can be implemented in a digital system in comparison with other finite fields. The main advantage of elliptic curve cryptography is that it offers higher security with smaller key size in comparison
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1. Because before photographs were usually used as evidence the photojournalists captures a moment which was accepted as having happened. But now in day people clearly know that photos can be edited and changed, you can add people into the situation or even delete part of the photo, its like now you can no longer believe 100% in what a photo is showing you. 2. What is an overview shot? Why do photojournalists use this type of photograph? A shot where you get an overall impression of the event depending
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DIRECTV Digital photo editing is an unavoidable constant in the life of the average individual. Not only have these altered images made it onto poster boards and magazine covers, it can also be seen on the TV screen. DIRECTV, for instance, is “one of the world's leading providers of digital television entertainment services” claiming to deliver “a premium video experience through state-of-the-art technology, unmatched programming, and industry leading customer service to more than 37 million customers
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Digital Media Copyright in Developing Countries In the developing world, piracy is a serious problem. According to the report “Why Poor Countries Lead the World in Piracy”, “Trade reps from rich countries complaining loudly about copyright infringement and demanding that poor countries reorganize their domestic priorities around preventing unauthorized copying at any expense, threatening trade sanctions and worse for the recalcitrant." However, the copyright laws in many developing countries still
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