ArchiveSafe: Mass-Leakage-Resistant Storage from Proof-of-Work

Data breaches—mass leakage of stored information—are a major security concern. Encryption can provide confidentiality, but encryption depends on a key which, if compromised, allows the attacker to decrypt everything, effectively instantly. Security of encrypted data thus becomes a question of protecting the encryption keys. In this paper, we propose using keyless encryption to construct a mass leakage resistant archiving system, where …