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Hyungrok Jo

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Open access Aug 2026

CCA2-Secure Unidirectional Proxy Re-encryption from Cryptographic Group Actions

Proxy re-encryption (PRE) allows a semi-trusted party (called a proxy) to transform ciphertexts under one user's public key into ciphertexts under another user's public key, without revealing any information about the underlying messages or the secret keys. On the other hand, post-quantum cryptography (PQC) is one of...

Hyungrok Jo, Shingo Sato, J. Shikata · 0 citations

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