A Note on Secure Key Issuing in ID-based Cryptography

XU Chunxiang; ZHOU Junhui; QIN Zhiguang

Paper 2005/180 Original: eprint.iacr.org/2005/180 ↗

A Note on Secure Key Issuing in ID-based Cryptography

XU Chunxiang

ZHOU Junhui

QIN Zhiguang

Abstract

Most recently, Lee B. et al proposed a key issuing protocol for ID-based cryptography to solve the key escrow problem. However in this letter, we show that a malicious key generation center (KGC) can successfully attack the protocol to obtain users¡¯ private keys. This means that in the protocol, the key escrow problem isn¡¯t really removed.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Preprint.
History: 2005-06-15: last updated; 2005-06-15: published
Short URL: https://ia.cr/2005/180
License: https://creativecommons.org/licenses/by/4.0/

BibTeX

@misc{cryptoeprint:2005/180,
      author = {XU Chunxiang and ZHOU Junhui and QIN Zhiguang},
      title = {A Note on Secure Key Issuing in ID-based Cryptography},
      howpublished = {Cryptology {ePrint} Archive, Paper 2005/180},
      year = {2005},
      url = {https://eprint.iacr.org/2005/180}
}