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Ibaraki University
(11 results)-
White Papers
The Mobile Web-Com e-Learning System for Mobile Phones
April 1, 2008, 12:00am PDT
Recent growth in network environments has led to a surge in demand for Internet-based e-learning in schools and businesses. To meet this demand, the Web-Com remote education software has been...
Provided by Ibaraki University
-
White Papers
Multiple Subcarrier Indoor Geolocation System in MIMO-OFDM WLAN APs Structure
December 21, 2009, 12:00am PST
This report aims to utilize existing and future Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing Wireless Local Area Network (MIMO-OFDM WLAN) systems characteristics -...
Provided by Ibaraki University
-
White Papers
Truly Efficient 2-Round Perfectly Secure Message Transmission Scheme
December 5, 2008, 12:00am PST
In the model of Perfectly Secure Message Transmission schemes (PSMTs), there are n channels between a sender and a receiver. An infinitely powerful adversary A may corrupt (Observe and forge) the...
Provided by Ibaraki University
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White Papers
Round-Efficient Perfectly Secure Message Transmission Scheme Against General Adversary
August 20, 2010, 12:00am PDT
In the model of Perfectly Secure Message Transmission schemes (PSMTs), there are n channels between a sender and a receiver, and they share no key. An infinitely powerful adversary A can corrupt...
Provided by Ibaraki University
-
White Papers
Provably Secure Convertible Undeniable Signatures With Unambiguity
June 14, 2010, 12:00am PDT
This paper shows some efficient and provably-secure convertible undeniable signature schemes (with both selective conversion and all conversion), in the standard model and discrete logarithm...
Provided by Ibaraki University
-
White Papers
Universally Composable Undeniable Signature
May 19, 2008, 12:00am PDT
How to define the security of undeniable signature schemes is a challenging task. This paper presents two security definitions of undeniable signature schemes which are more useful or natural than...
Provided by Ibaraki University
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White Papers
Signing the First Packet in Amortization Scheme for Multicast Stream Authentication
December 28, 2010, 12:00am PST
Signature amortization schemes have been introduced for authenticating multicast streams, in which, a single signature is amortized over several packets. The hash value of each packet is computed,...
Provided by Ibaraki University
-
White Papers
A Graph-Based New Amortization Scheme for Multicast Streams Authentication
January 1, 2011, 12:00am PST
The authors present a graph-based new amortization scheme for multicast streams authentication that achieves stronger resistance against packet loss and reduces the overhead in the same time. The...
Provided by Ibaraki University
-
Whitepapers
New Leakage Resilient CCA-Secure Public Key Encryption
August 9, 2012, 12:00am PDT
Building cryptographic schemes secure even if the secrets are partially leaked is a trend in cryptography, motivating partially from side channel attacks. In this paper, the authors are interested...
Provided by Ibaraki University
-
Whitepapers
Relation Between Verifiable Random Functions and Convertible Undeniable Signatures, and New Constructions
April 17, 2012, 12:00am PDT
Verifiable Random Functions (VRF) and Selectively-Convertible Undeniable Signature (SCUS) schemes were proposed independently in the literature. In this paper, the authors observe that they are...
Provided by Ibaraki University
-
White Papers
Maximum Leakage Resilient IBE and IPE
March 30, 2012, 12:00am PDT
In the model of identity-based encryption, first proposed by Shamir, one can use arbitrary strings as public keys. The research on IBE is an active and stimulating field of cryptography, and so...
Provided by Ibaraki University
-
Whitepapers
Relation Between Verifiable Random Functions and Convertible Undeniable Signatures, and New Constructions
April 17, 2012, 12:00am PDT
Verifiable Random Functions (VRF) and Selectively-Convertible Undeniable Signature (SCUS) schemes were proposed independently in the literature. In this paper, the authors observe that they are...
Provided by Ibaraki University
-
Whitepapers
New Leakage Resilient CCA-Secure Public Key Encryption
August 9, 2012, 12:00am PDT
Building cryptographic schemes secure even if the secrets are partially leaked is a trend in cryptography, motivating partially from side channel attacks. In this paper, the authors are interested...
Provided by Ibaraki University
-
White Papers
Maximum Leakage Resilient IBE and IPE
March 30, 2012, 12:00am PDT
In the model of identity-based encryption, first proposed by Shamir, one can use arbitrary strings as public keys. The research on IBE is an active and stimulating field of cryptography, and so...
Provided by Ibaraki University
-
White Papers
A Graph-Based New Amortization Scheme for Multicast Streams Authentication
January 1, 2011, 12:00am PST
The authors present a graph-based new amortization scheme for multicast streams authentication that achieves stronger resistance against packet loss and reduces the overhead in the same time. The...
Provided by Ibaraki University
-
White Papers
Signing the First Packet in Amortization Scheme for Multicast Stream Authentication
December 28, 2010, 12:00am PST
Signature amortization schemes have been introduced for authenticating multicast streams, in which, a single signature is amortized over several packets. The hash value of each packet is computed,...
Provided by Ibaraki University
-
White Papers
Universally Composable Undeniable Signature
May 19, 2008, 12:00am PDT
How to define the security of undeniable signature schemes is a challenging task. This paper presents two security definitions of undeniable signature schemes which are more useful or natural than...
Provided by Ibaraki University
-
White Papers
Provably Secure Convertible Undeniable Signatures With Unambiguity
June 14, 2010, 12:00am PDT
This paper shows some efficient and provably-secure convertible undeniable signature schemes (with both selective conversion and all conversion), in the standard model and discrete logarithm...
Provided by Ibaraki University
-
White Papers
Round-Efficient Perfectly Secure Message Transmission Scheme Against General Adversary
August 20, 2010, 12:00am PDT
In the model of Perfectly Secure Message Transmission schemes (PSMTs), there are n channels between a sender and a receiver, and they share no key. An infinitely powerful adversary A can corrupt...
Provided by Ibaraki University
-
White Papers
Truly Efficient 2-Round Perfectly Secure Message Transmission Scheme
December 5, 2008, 12:00am PST
In the model of Perfectly Secure Message Transmission schemes (PSMTs), there are n channels between a sender and a receiver. An infinitely powerful adversary A may corrupt (Observe and forge) the...
Provided by Ibaraki University
-
White Papers
Multiple Subcarrier Indoor Geolocation System in MIMO-OFDM WLAN APs Structure
December 21, 2009, 12:00am PST
This report aims to utilize existing and future Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing Wireless Local Area Network (MIMO-OFDM WLAN) systems characteristics -...
Provided by Ibaraki University
-
White Papers
The Mobile Web-Com e-Learning System for Mobile Phones
April 1, 2008, 12:00am PDT
Recent growth in network environments has led to a surge in demand for Internet-based e-learning in schools and businesses. To meet this demand, the Web-Com remote education software has been...
Provided by Ibaraki University
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