A C implementation of various one-time signature schemes (OTS), including LD-OTS, Merkle's OTS, W-OTS and the odd one out GMR. It also features a shortened edition of Pereira and Puodzius' shorter Merkle signature scheme [1].

Note: This library is intended for academic purposes. It is not completely ready for production. The code is written as a part of a B.Sc Thesis.

Just type make at the root directory for the MSS program. The executable file mss will be generated inside bin directory.

For LD-OTS type make lamport at the root directory. The executable file lamport will be generated inside bin directory.

For Merkles OTS type make merkle at the root directory. The executable file merkle will be generated inside bin directory.

For W-OTS type make winternitz at the root directory. The executable file winternitz will be generated inside bin directory.

For GMR type make gmr at the root directory. The executable file gmr will be generated inside bin directory.

To change specific parameters for the one-time signatures or mss, simply go to /include and find the corresponding .h header file. Here you can edit securityparameters and tree heights.

This library is licensed under the Apache License 2.0.

[1] 2016. G. Pereira, C. Puodzius and P. Barreto. "Shorter hash-based signatures" Available here.