I'm looking for any asymmetric algorithm can perform the serial encryption, by serial I mean double or more encryption with different key(same key size). RSA can not do it since the cipher of the first encryption is to long to perform an other encryption with the same key length.

For example:

$C = {\{ m\} _y}$ to denote encryption of a plaintext $m$ with a public key $y$. In addition, we use ${\{ m\} _{{y_{1}}:{y_{N}}}}$ to denote a serial of encryptions under multiple public keys, i.e., \begin{equation}{\{ m\} _{{y_1}:{y_{N}}}} = {\{ \ldots{\{ {\{ m\} _{{y_N}}}\} _{{y_{N - 1}}}}\ldots\} _{{y_1}}}.\end{equation}