Cryptocurrency users saw a sharp increase in different types of crypto wallets in the past
decade. However, the emerging multi-device wallets, even with improved security …

A t-out-of-n threshold decryption system assigns key shares to n parties so that any t of them
can decrypt a well-formed ciphertext. Existing threshold decryption systems are not secure …

In a traitor tracing system there are n parties and each party holds a secret key. A
broadcaster uses an encryption key to encrypt a message m to a ciphertext c so that every …