Speeding up secret computations with insecure auxiliary devices
CRYPTO '88 Proceedings on Advances in cryptology
A method for obtaining digital signatures and public-key cryptosystems
Communications of the ACM
Identity-Based Encryption from the Weil Pairing
SIAM Journal on Computing
Key Distribution Systems Based on Identification Information
CRYPTO '87 A Conference on the Theory and Applications of Cryptographic Techniques on Advances in Cryptology
Security and Performance of Server-Aided RSA Computation Protocols
CRYPTO '95 Proceedings of the 15th Annual International Cryptology Conference on Advances in Cryptology
Toward Hierarchical Identity-Based Encryption
EUROCRYPT '02 Proceedings of the International Conference on the Theory and Applications of Cryptographic Techniques: Advances in Cryptology
Signaling System No. 7 (SS7/C7): Protocol, Architecture, and Applications
Signaling System No. 7 (SS7/C7): Protocol, Architecture, and Applications
A man-in-the-middle attack on UMTS
Proceedings of the 3rd ACM workshop on Wireless security
Speeding up Exponentiation using an Untrusted Computational Resource
Designs, Codes and Cryptography
Mutual Authentication and Key Agreement for GSM
ICMB '06 Proceedings of the International Conference on Mobile Business
An Identity-Based Key Agreement Protocol for the Network Layer
SCN '08 Proceedings of the 6th international conference on Security and Cryptography for Networks
An improved SCARE cryptanalysis against a secret A3/A8 GSM algorithm
ICISS'07 Proceedings of the 3rd international conference on Information systems security
How to securely outsource cryptographic computations
TCC'05 Proceedings of the Second international conference on Theory of Cryptography
Hierarchical identity based encryption with constant size ciphertext
EUROCRYPT'05 Proceedings of the 24th annual international conference on Theory and Applications of Cryptographic Techniques
Portability evaluation of cryptographic libraries on android smartphones
CSS'12 Proceedings of the 4th international conference on Cyberspace Safety and Security
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In this paper, an identity-based key agreement protocol for securing mobile telephony in GSM and UMTS networks is presented. The approach allows two mobile phones to perform a session key agreement over an unsecured channel and between different providers using telephone numbers as public keys. Using the created session key, a symmetric encryption of all call data can be performed. Solutions to the problems of multi-domain key generation, key distribution, multi-domain public parameter distribution and inter-domain key agreement are presented. Furthermore, the proposed approach can be speeded up using server-aided cryptography, by outsourcing computationally expensive cryptographic operations to a high-performance backend computing server. The feasibility of the approach is illustrated by presenting experimental results based on a Symbian implementation running on N95-1 and N82-1 Nokia smartphones.