Definitions
Anamorphic cryptography seeks to create private communication channels within existing cryptographic schemes, with the goal of circumventing censorship imposed by a dictator (an adversary which possesses the keys of the receiver, and may also dictate the messages to send).
Background
In cryptosystems, there exist two implicit assumptions: one is that the secrecy of the receiver’s private key is maintained (referred to as the receiver-privacy assumption), and the other is that the sender retains the liberty to select the message to transmit (referred to as the sender-freedom assumption). However, in practical scenarios, these foundational assumptions can be entirely undermined by an authoritative entity known as the “dictator” possessing the capability to access any individual’s secret key and censor message content.
To achieve both private and unrestricted communication in this context, Persiano et al. (2022) introduced a novel concept called “anamorphic encryption” (AME)...
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References
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Wang, Y., Chen, R., Huang, X., Yung, M. (2024). Anamorphic Cryptography. In: Jajodia, S., Samarati, P., Yung, M. (eds) Encyclopedia of Cryptography, Security and Privacy. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-27739-9_1832-1
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DOI: https://doi.org/10.1007/978-3-642-27739-9_1832-1
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