Group signatures are a central cryptographic primitive that has received a considerable
amount of attention from the cryptographic community. They allow members of a group to …

As end-to-end encrypted messaging services become widely adopted, law enforcement
agencies have increasingly expressed concern that such services interfere with their ability …

Group signatures allow members of a group to anonymously sign on behalf of the group.
Membership is administered by a designated group manager. The group manager can also …

We propose a group signature scheme with a function of designated traceability; each
opener has attributes and a signer of a group signature can be traced by only the openers …

Group signatures allow users to sign messages on behalf of the group without prevealing
their identities. However, the opening authority can trace signatures back to their source …

We propose a group signature scheme with a function of designated traceability; each
opener has attributes, and a signer of a group signature can be traced by only the openers …

The group signature with message dependent opening (GS-MDO) is a valiant of the group
signature in a sense that the opening authority is split into two parties called the opener and …

The group signature with message dependent opening (GS-MDO) is a variant of the group
signature in the sense that the opening authority is split into two parties called the opener …

Collecting and analyzing personal data is important in modern information applications.
Though the privacy of data providers should be protected, the need to track certain data …

Pseudorandom functions are traditionally built upon block ciphers, but with the trend of
permutation based cryptography, it is a natural question to investigate the design of …