A provably secure certificateless organizational signature schemes

Allam, Ali M.; Ali, Ikbal; Mahgoub, Shereen M.

doi:10.1002/dac.3038

Cited by 5 publications

(7 citation statements)

References 10 publications

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“…The separation of the eavesdropper by a few centimeters from any entity in the network made his observation, not correlated with the other parties' channels; this is commonly the situation in wireless communications . Thus, the privacy of the generated keys is perfect with the assurance of theoretical information due to the environment of the wireless communication scheme, unlike the cryptographic cases, which rely on security assuming the intractability of some mathematical problems …”

Section: Introductionmentioning

confidence: 99%

“…10 Thus, the privacy of the generated keys is perfect with the assurance of theoretical information due to the environment of the wireless communication scheme, unlike the cryptographic cases, which rely on security assuming the intractability of some mathematical problems. [11][12][13][14] On the basis of random and reciprocity features of fading channel, various secret key agreement approaches were suggested for wireless communication systems in time division duplex (TDD) mode. [15][16][17] But in the frequency division duplex (FDD) situation, using of two different channels simultaneously for transmitting and receiving leads to lose the advantage of a reciprocal feature of the channel used in key generation as in TDD case.…”

Section: Introductionmentioning

confidence: 99%

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Improving secret key generation for wireless communications in FDD mode

Allam

2018

Int J Communication

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Summary Most recent research on channel‐based key generation oriented to time division duplex system because the channel reciprocity feature is applied directly for secret key generation. Most of commercial cellular systems depend on frequency division duplex (FDD) systems. In this paper, we investigate the impact of uplink and downlink of FDD systems for the generation of shared secret keys between two parties in the presents of passive eavesdropper. In addition, we are considering improving the rate of the secret key for wireless communication in FDD mode. The main idea is to use the fading coefficient of the channels between the relay and other parties as an additional random common source for the secret key generation. Also, explore the using of channel estimation techniques to reduce the channel training sequence and study its effect on the generation of shared key for wireless communications in FDD mode. We derive the upper bound of the generated shared key rate for four scenarios and give numerical examples to reveal the performance of our suggested improvement approaches.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improving secret key generation for wireless communications in FDD mode

Allam

2018

Int J Communication

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“…In CL‐PKC, the KGC generates partial private key of a user and then the user generates its private key by adding some secret information to the partial private key. Since 2003, several developments on CL‐signature schemes toward various applications have been discussed. Due to the lack of public key authentication (certificate), several CL‐signature schemes are vulnerable to key replacement attack, in which an adversary can replace the public key of a user with a value of its choice, and finally, the verification can be done with this new public key.…”

Section: Introductionmentioning

confidence: 99%

Short certificate‐based proxy signature scheme from pairings

Verma¹,

Singh

2017

Trans Emerging Tel Tech

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Recently, the delegation of signing capacity has become a common practice to develop applications like distributed computing, grid computing, mobile agents, mobile communication, etc. The method of proxy signing, introduced by Mambo et al, is the tool of such delegation. In 2003, Gentry introduced the paradigm of certificate‐based encryption to remove the key escrow problem in identity‐based public key cryptography (PKC) and to combine the merits of PKC and identity‐based PKC. This article presents an efficient and short provably secure certificate‐based proxy signature scheme from pairing over elliptic curves. The aim is to devise a method of delegation with less space and low‐bandwidth requirement. Through efficiency comparison with existing efficient proxy signature schemes, we show that our scheme is the most appealing for low‐bandwidth communication channels applied for wireless communication, online transactions, e‐bookings, mobile agents, etc.

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“…If the distance between the Eavesdropper and any user in the network in a few centimeters, made his observation, not correlated with the other users' channels, this is generally the condition in wireless communications [10]. Therefore, the secrecy of the generated keys is perfect with the guarantee of theoretical information due to the environment of the wireless communication scheme, unlike the cryptographic cases, which depend on security assuming the complexity of some mathematical problems [11]- [14].…”

Section: Introductionmentioning

confidence: 99%

Channel-based Secret Key Establishment for FDD Wireless Communication Systems

Ali¹

2017

CAE

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Most of current research on channel-based key generation focused on a time division duplex (TDD) system as the channel reciprocity factor applied directly to the generation of a secret key. However, most of commercial cellular systems rely on a frequency division duplex (FDD) mode. In this paper, we study the utilization of the uplink and downlink of FDD systems for the generation of common secret key between two users in the presents of inactive eavesdropper. The clue of our work is to explore the fading gain of the wireless channel between two users to generate a symmetric key. We develop the upper bound of the generation rate for shared key of the suggested mechanism and give numerical examples to show the performance of our suggested approach. General TermsInformation theoretical security.

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A provably secure certificateless organizational signature schemes

Cited by 5 publications

References 10 publications

Improving secret key generation for wireless communications in FDD mode

Improving secret key generation for wireless communications in FDD mode

Short certificate‐based proxy signature scheme from pairings

Channel-based Secret Key Establishment for FDD Wireless Communication Systems

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