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Joost Rijneveld f5d53b252e
Fix failing verification test formatting 		vor 7 Jahren
test Fix failing verification test formatting vor 7 Jahren
ui Remove fixed message length from UI vor 7 Jahren
.gitignore Clean up tests vor 7 Jahren
LICENSE Simplify licensing using LICENSE file vor 7 Jahren
Makefile Clean up tests vor 7 Jahren
README.md Clarify current BDS traversal support vor 7 Jahren
fips202.c Clean up includes vor 7 Jahren
fips202.h Perform various reformatting / renaming vor 7 Jahren
hash.c Reorder ull_to_bytes parameters to group output vor 7 Jahren
hash.h Perform various reformatting / renaming vor 7 Jahren
hash_address.c Rename parameters for readability and consistency vor 7 Jahren
hash_address.h Rename parameters for readability and consistency vor 7 Jahren
params.c Compute sk size after defining BDS k parameter vor 7 Jahren
params.h Let xmss_core decide on secret key size vor 7 Jahren
randombytes.c Refactor for more consistent style and readability vor 7 Jahren
randombytes.h Perform various reformatting / renaming vor 7 Jahren
wots.c Reorder ull_to_bytes parameters to group output vor 7 Jahren
wots.h Refactor and deduplicate WOTS vor 7 Jahren
xmss.c Revert to using runtime-only parameter struct vor 7 Jahren
xmss.h Perform various reformatting / renaming vor 7 Jahren
xmss_commons.c Fix failing verification test formatting vor 7 Jahren
xmss_commons.h Clean up signing functions vor 7 Jahren
xmss_core.c Let xmss_core decide on secret key size vor 7 Jahren
xmss_core.h Let xmss_core decide on secret key size vor 7 Jahren
xmss_core_fast.c Let xmss_core decide on secret key size vor 7 Jahren
xmss_core_fast.h Let xmss_core decide on secret key size vor 7 Jahren

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. This means that the xmss_core_fast.c back-end is somewhat hard to use. This is the most immediate open TODO, and will be resolved soon.

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.