Full Boneh-Boyen signature scheme defines a pair of secret keys (SK) $a \in \mathbb{Z}_n$ and $b \in \mathbb{Z}_n$ and a pair of public keys (PK) $A = G^a \in \mathbb{G}$ and $B = G^b \in \mathbb{G}$. Can anybody point me out to some similar signature scheme where $SK \in \mathbb{Z}_n$ and $PK \in \mathbb{G}$?

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    $\begingroup$ BLS $\;$ $\endgroup$ – user991 Feb 7 '15 at 20:48

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