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Comenius University
(10 results)-
White Papers
Strategic Information Management
June 22, 2006, 12:00am PDT
In this paper on an example of a standard company we identify a strategic Information System (IS) issues in an organization. We critically analyze and critically evaluate the organization's...
Provided by Comenius University
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White Papers
Online Bandwidth Allocation
February 7, 2008, 12:00am PST
The paper investigates a version of the resource allocation problem arising in the wireless networking, namely in the OVSF code reallocation process. In this setting a complete binary tree of a...
Provided by Comenius University
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White Papers
Threshold Encryption Into Multiple Ciphertexts
March 4, 2011, 12:00am PST
The authors propose (T,N) multi-ciphertext scheme for symmetric encryption. The scheme encrypts a message into N distinct ciphertexts. The knowledge of the symmetric key allows decryption of the...
Provided by Comenius University
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White Papers
Attacking M&M Collective Signature Scheme
May 20, 2010, 12:00am PDT
A collective signature scheme aims to solve the problem of signing a message by multiple signers. Recently, Moldovyan and Moldovyan proposed a scheme for collective signatures based on Schnorr...
Provided by Comenius University
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White Papers
On Designated Verifier Signature Schemes
June 29, 2010, 12:00am PDT
Designated verifier signature schemes allow a signer to convince only the designated verifier that a signed message is authentic. The authors define attack models on the unforgeability property of...
Provided by Comenius University
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White Papers
Combining Properties of Cryptographic Hash Functions
September 28, 2010, 12:00am PDT
A "Strong" cryptographic hash function suitable for practical applications should simultaneously satisfy many security properties, like pseudo-randomness, collision resistance and unforgeability....
Provided by Comenius University
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White Papers
Rapid Almost-Complete Broadcasting in Faulty Networks
February 7, 2008, 12:00am PST
This paper studies the problem of broadcasting in synchronous point-to-point networks, where one initiator owns a piece of information that has to be transmitted to all other vertices as fast as...
Provided by Comenius University
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White Papers
A Unified Approach To Determining The Early Exercise Boundary Position At Expiry For American Style Of General Class Of Derivatives
March 25, 2011, 12:00am PDT
In this paper, the authors present a unified method for calculating the limit of early exercise boundary at expiry. They price American style of general derivative using a formula expressed as a...
Provided by Comenius University
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White Papers
A Note on Security Protocol for Multicast Communications
January 1, 2012, 12:00am PST
The authors show that the protocol recently proposed in for securing multicast communication is completely insecure. They described obvious insecurity of the multicast protocol. The proposal lacks...
Provided by Comenius University
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White Papers
Attacking Scrambled Burrows-Wheeler Transform
March 27, 2012, 12:00am PDT
Scrambled Burrows-Wheeler transform is an attempt to combine privacy (encryption) and data compression. The authors show that the proposed approach is insecure. They present chosen plaintext and...
Provided by Comenius University
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White Papers
Attacking Scrambled Burrows-Wheeler Transform
March 27, 2012, 12:00am PDT
Scrambled Burrows-Wheeler transform is an attempt to combine privacy (encryption) and data compression. The authors show that the proposed approach is insecure. They present chosen plaintext and...
Provided by Comenius University
-
White Papers
A Note on Security Protocol for Multicast Communications
January 1, 2012, 12:00am PST
The authors show that the protocol recently proposed in for securing multicast communication is completely insecure. They described obvious insecurity of the multicast protocol. The proposal lacks...
Provided by Comenius University
-
White Papers
A Unified Approach To Determining The Early Exercise Boundary Position At Expiry For American Style Of General Class Of Derivatives
March 25, 2011, 12:00am PDT
In this paper, the authors present a unified method for calculating the limit of early exercise boundary at expiry. They price American style of general derivative using a formula expressed as a...
Provided by Comenius University
-
White Papers
Rapid Almost-Complete Broadcasting in Faulty Networks
February 7, 2008, 12:00am PST
This paper studies the problem of broadcasting in synchronous point-to-point networks, where one initiator owns a piece of information that has to be transmitted to all other vertices as fast as...
Provided by Comenius University
-
White Papers
Combining Properties of Cryptographic Hash Functions
September 28, 2010, 12:00am PDT
A "Strong" cryptographic hash function suitable for practical applications should simultaneously satisfy many security properties, like pseudo-randomness, collision resistance and unforgeability....
Provided by Comenius University
-
White Papers
On Designated Verifier Signature Schemes
June 29, 2010, 12:00am PDT
Designated verifier signature schemes allow a signer to convince only the designated verifier that a signed message is authentic. The authors define attack models on the unforgeability property of...
Provided by Comenius University
-
White Papers
Attacking M&M Collective Signature Scheme
May 20, 2010, 12:00am PDT
A collective signature scheme aims to solve the problem of signing a message by multiple signers. Recently, Moldovyan and Moldovyan proposed a scheme for collective signatures based on Schnorr...
Provided by Comenius University
-
White Papers
Threshold Encryption Into Multiple Ciphertexts
March 4, 2011, 12:00am PST
The authors propose (T,N) multi-ciphertext scheme for symmetric encryption. The scheme encrypts a message into N distinct ciphertexts. The knowledge of the symmetric key allows decryption of the...
Provided by Comenius University
-
White Papers
Online Bandwidth Allocation
February 7, 2008, 12:00am PST
The paper investigates a version of the resource allocation problem arising in the wireless networking, namely in the OVSF code reallocation process. In this setting a complete binary tree of a...
Provided by Comenius University
-
White Papers
Strategic Information Management
June 22, 2006, 12:00am PDT
In this paper on an example of a standard company we identify a strategic Information System (IS) issues in an organization. We critically analyze and critically evaluate the organization's...
Provided by Comenius University
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