Ciphers providing Deniable encryption?
Here's a relatively complete list of the papers on deniable encryption (plus papers containing a lower bound against some type of deniable encryption):


Deniable Encryption by Canetti/Dwork/Naor/Ostrovsky [CRYPTO 1997]
Separating Random Oracle Proofs from Complexity Theoretic Proofs: The Non-committing Encryption Case by Nielsen [CRYPTO 2002]
Lower and Upper Bounds for Deniable Public-Key Encryption by Bendlin/Nielsen/Nordholt/Orlandi [ASIACRYPT 2011]
Bi-Deniable Public-Key Encryption by O'Neill/Peikert/Waters [CRYPTO 2011]
On the (Black-Box) Impossibility of Sender-Deniable Public Key Encryption by Dachman-Soled [PKC 2014]
How to Use Indistinguishability Obfuscation: Deniable Encryption, and More by Sahai/Waters [STOC 2014]
Deniable Functional Encryption by De Caro/Iovino/O'Neill [PKC 2016]
Deniable Attribute Based Encryption for Branching Programs from LWE by Apon/Fan/Liu [TCC 2016-B]