CWI

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  • Secure Hybrid Encryption from Weakened Key Encapsulation

    White Papers // Jun 2007 // provided by CWI

    The authors put forward a new paradigm for building hybrid encryption schemes from Constrained Chosen-Ciphertext Attack secure (CCCA) Key-Encapsulation Mechanisms (KEMs) plus authenticated symmetric encryption. Constrained chosen-ciphertext security is a new security notion for KEMs that they propose. It has less demanding security requirements than standard CCCA security (since it ...

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  • Chosen-Ciphertext Secure Key-Encapsulation Based on Gap Hashed Diffie-Hellman

    White Papers // Feb 2007 // provided by CWI

    One of the main fields of interest in cryptography is the design and the analysis of the security of encryption schemes in the Public-Key Encryption setting (PKE schemes). The authors propose a practical key encapsulation mechanism with a simple and intuitive design concept. Security against chosen-ciphertext attacks can be proved ...

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