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...