kris/xmss-KAT-generator
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Joost Rijneveld d9a9723125
Combine auth path and keygen root functions 
This greatly reduces the memory comsumption of the auth path
computation, since it now also uses treehash. It prevents
duplicate code by re-using the treehash function.

A downside is that it does also pick out the authentication path
during key generation (while it is not used), but this cost is
negligible.
2017-10-24 11:53:45 +02:00
test Also fix underflow for XMSSMT 2017-10-24 09:37:57 +02:00
.gitignore Add test to check deterministic signatures 2017-10-23 14:52:33 +02:00
fips202.c Clean up includes 2017-10-19 17:38:26 +02:00
fips202.h Perform various reformatting / renaming 2017-10-23 14:10:39 +02:00
hash_address.c Combine auth path and keygen root functions 2017-10-24 11:53:45 +02:00
hash_address.h Combine auth path and keygen root functions 2017-10-24 11:53:45 +02:00
hash.c Reorder ull_to_bytes parameters to group output 2017-10-23 16:19:16 +02:00
hash.h Perform various reformatting / renaming 2017-10-23 14:10:39 +02:00
LICENSE Simplify licensing using LICENSE file 2017-10-19 17:38:34 +02:00
Makefile Add test to check deterministic signatures 2017-10-23 14:52:33 +02:00
params.c Add UI test files to create sample signatures 2017-10-17 17:11:18 +02:00
params.h Perform various reformatting / renaming 2017-10-23 14:10:39 +02:00
randombytes.c Refactor for more consistent style and readability 2017-08-03 17:39:37 +02:00
randombytes.h Perform various reformatting / renaming 2017-10-23 14:10:39 +02:00
README.md Document and simplify library usage 2017-10-23 13:03:44 +02:00
wots.c Reorder ull_to_bytes parameters to group output 2017-10-23 16:19:16 +02:00
wots.h Refactor and deduplicate WOTS 2017-10-23 15:54:14 +02:00
xmss_commons.c Reorder ull_to_bytes parameters to group output 2017-10-23 16:19:16 +02:00
xmss_commons.h Reorder ull_to_bytes parameters to group output 2017-10-23 16:19:16 +02:00
xmss_core_fast.c Reorder ull_to_bytes parameters to group output 2017-10-23 16:19:16 +02:00
xmss_core_fast.h Simplify licensing using LICENSE file 2017-10-19 17:38:34 +02:00
xmss_core.c Combine auth path and keygen root functions 2017-10-24 11:53:45 +02:00
xmss_core.h Perform various reformatting / renaming 2017-10-23 14:10:39 +02:00
xmss.c Revert to using runtime-only parameter struct 2017-10-16 12:09:07 +02:00
xmss.h Perform various reformatting / renaming 2017-10-23 14:10:39 +02:00

README.md

XMSS reference code

This repository contains the reference implementation that accompanies the Internet Draft "XMSS: Extended Hash-Based Signatures", draft-irtf-cfrg-xmss-hash-based-signatures.

This reference implementation supports all parameter sets as defined in the Draft at run-time (specified by prefixing the public and private keys with a 32-bit oid). Implementations that want to use compile-time parameter sets can remove the struct xmss_params function parameter.

While the behavior of the code in this repository is supposed to be stable, the API is not yet fully complete. In particular, the wrapper for run-time parameters does not yet support the back-end functions that make use of BDS traversal (TODO). We will also add more extensive test functionality, making it easier to compare to other XMSS implementations (TODO).

When using the current code base, please be careful, expect changes and watch this document for further documentation.

Dependencies

For the SHA-2 hash functions (i.e. SHA-256 and SHA-512), we rely on OpenSSL. Make sure to install the OpenSSL development headers. On Debian-based systems, this is achieved by installing the OpenSSL development package libssl-dev.

License

This reference implementation was written by Andreas Hülsing and Joost Rijneveld. All included code is available under the CC0 1.0 Universal Public Domain Dedication.