2967 search results - page 402 / 594 » Cryptology |
146
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FSE
2005
Springer
15 years 11 months ago
2005
Springer
For the power consumption model called Hamming weight model, we rewrite DPA attacks in terms of correlation coefficients between two Boolean functions. We exhibit properties of S-b...
168
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HIP
2005
Springer
15 years 11 months ago
2005
Springer
Abstract. Current CAPTCHAs require users to solve objective questions such as text recognition or image recognition. We propose a class of CAPTCHAs based on collaborative filterin...
147
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HIP
2005
Springer
15 years 11 months ago
2005
Springer
Efforts to defend against automated attacks on e-commerce services have led to a new security protocol known as a CAPTCHA, a challenge designed to exploit gaps in the perceptual a...
151
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INDOCRYPT
2005
Springer
15 years 11 months ago
2005
Springer
Abstract. We introduce a new undeniable signature scheme which is existentially unforgeable and anonymous under chosen message attacks in the standard model. The scheme is an embed...
160
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INDOCRYPT
2005
Springer
15 years 11 months ago
2005
Springer
In this paper we design several double length hash functions and study their security properties in the random oracle model. We design a class of double length hash functions (and ...