Daniel Jost 0001 Ueli Maurer Marta Mularczyk Efficient Ratcheting: Almost-Optimal Guarantees for Secure Messaging. 159-188 2019 EUROCRYPT (1) https://doi.org/10.1007/978-3-030-17653-2_6 conf/eurocrypt/2019-1 db/conf/eurocrypt/eurocrypt2019-1.html#JostMM19