Lyra: password-based key derivation with tunable memory and processing costs. - Leonardo C. Almeida; Ewerton R. Andrade; Paulo S. L. M. Barreto; Marcos A. Simplício Jr. (J. Cryptogr. Eng., 2014)

Lyra2: Password Hashing Scheme with improved security against time-memory trade-offs. - Marcos A. Simplício Jr.; Leonardo C. Almeida; Ewerton R. Andrade; Paulo C. F. dos Santos; Paulo S. L. M. Barreto (IACR Cryptol. ePrint Arch., 2015)