Identity-based cryptosystems and signature schemes
Proceedings of CRYPTO 84 on Advances in cryptology
How to prove yourself: practical solutions to identification and signature problems
Proceedings on Advances in cryptology---CRYPTO '86
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Lecture Notes in Computer Science on Advances in Cryptology-EUROCRYPT'88
Identity-Based Encryption from the Weil Pairing
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CRYPTO '92 Proceedings of the 12th Annual International Cryptology Conference on Advances in Cryptology
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PKC '03 Proceedings of the 6th International Workshop on Theory and Practice in Public Key Cryptography: Public Key Cryptography
Advances in Elliptic Curve Cryptography (London Mathematical Society Lecture Note Series)
Advances in Elliptic Curve Cryptography (London Mathematical Society Lecture Note Series)
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Designs, Codes and Cryptography
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The Computer Journal
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EUROCRYPT'91 Proceedings of the 10th annual international conference on Theory and application of cryptographic techniques
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PKC'07 Proceedings of the 10th international conference on Practice and theory in public-key cryptography
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ANTS'06 Proceedings of the 7th international conference on Algorithmic Number Theory
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ISC'05 Proceedings of the 8th international conference on Information Security
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Pairing'07 Proceedings of the First international conference on Pairing-Based Cryptography
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Journal of Systems and Software
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ARES'11 Proceedings of the IFIP WG 8.4/8.9 international cross domain conference on Availability, reliability and security for business, enterprise and health information systems
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IWSEC'11 Proceedings of the 6th International conference on Advances in information and computer security
One-round identity-based key exchange with Perfect Forward Security
Information Processing Letters
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ACISP'12 Proceedings of the 17th Australasian conference on Information Security and Privacy
Galindo-Garcia identity-based signature revisited
ICISC'12 Proceedings of the 15th international conference on Information Security and Cryptology
ACM SIGCOMM Computer Communication Review
Non-delegatable strong designated verifier signature using a trusted third party without pairings
AISC '13 Proceedings of the Eleventh Australasian Information Security Conference - Volume 138
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The use of concatenated Schnorr signatures [Sch91] for the hierarchical delegation of public keys is a well-known technique. In this paper we carry out a thorough analysis of the identity-based signature scheme that this technique yields. The resulting scheme is of interest since it is intuitive, simple and does not require pairings. We prove that the scheme is secure against existential forgery on adaptive chosen message and adaptive identity attacks using a variant of the Forking Lemma [PS00]. The security is proven in the Random Oracle Model under the discrete logarithm assumption. Next, we provide an estimation of its performance, including a comparison with the state of the art on identity-based signatures. We draw the conclusion that the Schnorr-like identity-based signature scheme is arguably the most efficient such scheme known to date.