Hi,

Please have a look at the improved patch series in https://github.com/marschap/openldap/commits/contrib-totp3 and https://github.com/marschap/openldap/commits/contrib-totp4 They try to address the issues in the previous versions

Changes: * contrib/passwd/totp: fix the big-endian case, support 32-bit archs Use memcpy for the WORDS_BIGENDIAN case [much simpler] Use uint64_t for same results in 32- and 64-bit cases

* contrib/passwd/totp: support compiling using nettle Fix the botched previous patch. The two branches differ only in that patch, giving the following alternatives: - contrib-totp3 continues to use the HMAC_... macros It still requires the #if...#else...#endif to harmonize the setup in do_hmac() - contrib-totp4 gets rid of the HMAC_... macros It uses the different implementations directly in do_hmac() Of course separated by #if...#else..#endif Functionally both patches are equivalent: in my tests they yield the same results for OpenSSL and GnuTLS. Best PEter