Improvement of a Self Proxy Signature Scheme
2010 ◽
Vol 40-41
◽
pp. 643-646
Keyword(s):
The aim of self proxy is to protect the signer’s permanent secret key. In 2007, Kim and Chang proposed a self proxy signature scheme. In this paper, we show that their scheme cannot resist the warrant revision attack. Anyone can forge a valid proxy warrant and generate a valid self proxy signature for any message, when he gets a self proxy signature. To overcome their weakness, an improvement scheme is proposed, which is provably secure in random oracle model.
2013 ◽
Vol 411-414
◽
pp. 721-724
◽
Keyword(s):
2011 ◽
Vol 63-64
◽
pp. 785-788
Keyword(s):
2010 ◽
Vol 439-440
◽
pp. 1271-1276
◽
Keyword(s):
2013 ◽
Vol 26
(4)
◽
pp. 547-558
◽
Keyword(s):
2021 ◽
Vol 15
(1)
◽
pp. 117-137