Secure Blind Decryption

  title={Secure Blind Decryption},
  author={Matthew Green},
  booktitle={IACR Cryptology ePrint Archive},
In this work we construct public key encryption schemes that admit a protocol for blindly decrypting ciphertexts. In a blind decryption protocol, a user with a ciphertext interacts with a secret keyholder such that the user obtains the decryption of the ciphertext and the keyholder learns nothing about what it decrypted. While we are not the first to consider this problem, previous works provided only weak security guarantees against malicious users. We provide, to our knowledge, the first… CONTINUE READING