Tiresias: Large Scale, Maliciously Secure Threshold Paillier

ePrint Report: Tiresias: Large Scale, Maliciously Secure Threshold Paillier

Offir Friedman, Avichai Marmor, Dolev Mutzari, Yehonatan C. Scaly, Yuval Spiizer, Avishay Yanai

In the threshold version of Paillier's encryption scheme a set of parties hold a share of the secret decryption key.
Whenever a ciphertext is to be decrypted, the parties sends their decryption shares, which are then verified for correctness and combined into the plaintext.
The scheme has been widely adopted in various applications, from secure voting to general …

ciphertext decryption encryption eprint report key large report scale secret share version