Long-term secure commitments via extractable-binding commitmentsBuldas, Ahto; Geihs, Matthias; Buchmann, JohannesInformation Security and Privacy : 22nd Australasian Conference, ACISP 2017, Auckland, New Zealand, July 3–5, 2017 : Proceedings, Part I2017 / p. 65-81 http://doi.org/10.1007/978-3-319-60055-0_4 Long-term secure time-stamping using preimage-aware hash functions : (short version)Buldas, Ahto; Geihs, Matthias; Buchmann, JohannesProvable Security : 11th International Conference, ProvSec 2017, Xi'an, China, October 23–25, 2017 : proceedings2017 / p. 251-260 : ill http://doi.org/10.1007/978-3-319-68637-0_15