Group signatures with time-bound keys revisited: a new model, an efficient construction, and its implementation
Chu et al.(ASIACCS 2012) proposed group signature with time-bound keys (GS-TBK),
where each signing key is associated with expiry time τ. In addition, to prove membership of
the group, a signer needs to prove that the expiry time has not passed, ie, t<; τ, where t is the
current time. A signer whose expiry time has passed is automatically revoked, and this
revocation is called natural revocation. Signers can be revoked simultaneously before their
expiry times if the credential is compromised. This revocation is called premature revocation …
where each signing key is associated with expiry time τ. In addition, to prove membership of
the group, a signer needs to prove that the expiry time has not passed, ie, t<; τ, where t is the
current time. A signer whose expiry time has passed is automatically revoked, and this
revocation is called natural revocation. Signers can be revoked simultaneously before their
expiry times if the credential is compromised. This revocation is called premature revocation …
Group signatures with time-bound keys revisited: A new model and an efficient construction
Chu et al.(ASIACCS 2012) proposed group signature with time-bound keys (GS-TBK) where
each signing key is associated to an expiry time τ. In addition to prove the membership of the
group, a signer needs to prove that the expiry time has not passed, ie, t< τ where t is the
current time. A signer whose expiry time has passed is automatically revoked, and this
revocation is called natural revocation. Simultaneously, signers can be revoked before their
expiry times have passed due to the compromise of the credential. This revocation is called …
each signing key is associated to an expiry time τ. In addition to prove the membership of the
group, a signer needs to prove that the expiry time has not passed, ie, t< τ where t is the
current time. A signer whose expiry time has passed is automatically revoked, and this
revocation is called natural revocation. Simultaneously, signers can be revoked before their
expiry times have passed due to the compromise of the credential. This revocation is called …