A Public Key Cryptosystem And A Signature Scheme Based On Discrete Logarithms Pdf

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In cryptography , the ElGamal encryption system is an asymmetric key encryption algorithm for public-key cryptography which is based on the Diffie—Hellman key exchange. It was described by Taher Elgamal in ElGamal encryption consists of three components: the key generator, the encryption algorithm, and the decryption algorithm.

A New Blind Signature Scheme Based on Improved ElGamal Signature Scheme

Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: A new signature scheme is proposed, together with an implementation of the Diffie-Hellman key distribution scheme that achieves a public key cryptosystem. The security of both systems relies on the difficulty of computing discrete logarithms over finite fields. View via Publisher. Save to Library. Create Alert. Launch Research Feed. Share This Paper. Background Citations.

Methods Citations. Results Citations. Supplemental Video. Explore Further Discover more papers related to the topics discussed in this paper. Topics from this paper. Integer factorization Time complexity Key size Algorithm. Key distribution Ciphertext Diffie—Hellman key exchange Cipher. Citation Type.

Has PDF. Publication Type. More Filters. View 1 excerpt, cites methods. Research Feed. Improved digital signature scheme based on factoring and discrete logarithms. A new public key cryptosystem based on polynomials over finite fields GF 2. Highly Influenced. View 3 excerpts, cites methods. A new digital signature scheme based on factoring and discrete logarithms. How to make RSA and some other encryptions probabilistic. A method for obtaining digital signatures and public-key cryptosystems.

An efficient signature scheme based on quadratic equations. Highly Influential. View 5 excerpts, references methods and background. An improved algorithm for computing logarithms over GF p and its cryptographic significance Corresp.

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View 4 excerpts, references methods and background. A subexponential algorithm for the discrete logarithm problem with applications to cryptography.

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Lecture: ElGamal Public Key Cryptography

Authors : Sattar J. Aboud and Asim A. El Sheikh. Abstract: A new method for public key cryptosystem and digital signature scheme is suggested. The system employs computations in zn. Where n is an integer number of a composite modulus.

Author 1: Chandrashekhar Meshram Author 2: S. Download PDF. Abstract: In , Shamir [1] introduced the concept of an identity-based cryptosystem. In this system, each user needs to visit a key authentication center KAC and identify him self before joining a communication network. Once a user is accepted, the KAC will provide him with a secret key. There is no public file required in this system.

Scientific Research An Academic Publisher. This paper describes and compares a variety of algorithms for secure transmission of information via open communication channels based on the discrete logarithm problem that do not require search for a generator primitive element. Modifications that simplify the cryptosystem are proposed, and, as a result, accelerate its performance. It is shown that hiding information via exponentiation is more efficient than other seemingly simpler protocols. Numeric illustrations are provided.


It is not yet proved that breaking the system is equivalent to computing discrete logarithms. Sec- tion 4 develops some attacks on the signature scheme, none of​.


A Public Key Cryptosystem and a Signature Scheme Based on Discrete Logarithms

Authors : Chandrashekhar Meshram. Abstract: In , Shamir introduced the concept of an identity-based cryptosystem. In this system, each user needs to visit a Key Authentication Center KAC and identify him self before joining a communication network. Once a user is accepted, the KAC will provide him with a secret key. In this way if a user wants to communicate with others he only needs to know the identity of his communication partner and the public key of the KAC.

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A new signature scheme is proposed together with an implementation of the Diffie - Hellman key distribution scheme that achieves a public key cryptosystem. The security of both systems relies on the difficulty of computing discrete logarithms over finite fields. Skip to main content Skip to sections. This service is more advanced with JavaScript available. Advertisement Hide.

Asian Journal of Information Technology

Blind signature scheme, an important cryptographic primitive, is applicable in protocols that guarantee the anonymity of the participants. This scheme is increasingly used in untraceable payment and electronic voting systems. In this paper we improve ElGamal signature scheme and then we propose a new blind signature based on that.

ElGamal encryption

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  1. Maisa A.

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