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Off-line Digital Cash Schemes Providing Unlinkability, Anonymity and Change
Digital money group blind signature double spending
2017/12/25
Several ecash systems have been proposed in the last twenty years or so,each offering features similar to real cash. One feature which to date has not been provided is that of a payee giving change to...
Crypto-analyses on “user efficient recoverable off-line e-cashs scheme with fast anonymity revoking”
anonymity unlikability cryptanalysis
2016/1/26
Recently, Fan et al. proposed a user efficient recoverable off-line e-cash scheme
with fast anonymity revoking. They claimed that their scheme could achieve security
requirements of an e-cash system...
Cryptanalysis on “Secure untraceable off-line electronic cash system”
digital signatures discrete logarithm problem cryptanalysis
2016/1/26
Recently, Baseri et al. proposed a secure untraceable off-line electronic cash
system. They claimed that their scheme could achieve security requirements of an
e-cash system such as, untraceability,...
Online/Off-line Ring Signature Scheme with Provable Security
unforgeability ring members signer anonymity
2016/1/6
The article proposes an Online/Off-line Ring Signature Scheme in random oracle
model.Security of the scheme relies on both Computational Diffie-Hellman and k-CAA
problems. The proposed scheme is pro...
An off-line electronic cash scheme is proposed that is suitable for
small payments. The approach is innovative, in that each coin may be
efficiently verified by the same or different merchants durin...
Divisible On-line/Off-line Signatures
Signature Schemes Divisible On-line/Off-line Signatures On-line/Off-line Threshold Signatures
2009/6/9
On-line/Off-line signatures are used in a particular scenario
where the signer must respond quickly once the message to be signed is
presented. The idea is to split the signing procedure into two ph...
A note on the n-spendable extension of Ferguson's single-term off-line coins
n-spendable extension Ferguson's single-term off-line coins
2009/3/19
A note on the n-spendable extension of Ferguson's single-term off-line coins.
Generic On-line/Off-line Threshold Signatures
On-line/Off-line Signature Schemes Threshold Cryptography Chameleon Hash Functions
2009/3/17
We present generic on-line/off-line threshold signatures, in
which the bulk of signature computation can take place “off-line” during
lulls in service requests [6]. Such precomputation can help syst...