On 11 December 2017 at 13:09, Ben Coman <b...@openinworld.com> wrote:
> 2017-12-10 6:01 GMT-03:00 Ben Coman <b...@openinworld.com>: > > Can anyone recommend libraries (native Smalltalk or via FFI) > > to do generate a HMAC-SHA512 ? > > On 11 December 2017 at 01:30, Hernán Morales Durand < > hernan.mora...@gmail.com> wrote: > >> Hi Ben, >> >> I would use NaCl: http://cr.yp.to/highspeed/coolnacl-20120725.pdf >> which you can install from the Pharo Project Catalog in Pharo 6.x > > > Thanks Henry. That looks like path of least resistance. > Whoops, I meant thanks Hernán. > I hit a stumbling block that took a short while to understand. > The library binary downloaded specified by ConfigruationOfNacl>> > platformLibraryUrl > is libsodium: ELF 32-bit LSB shared object > whereas I'm using 64bit Linux. > btw, I discovered just now that FFILibrary>>unix64ModuleName was introduced this year. So presumably with the following you could include both bit'ness libraries in the libsodium.so.gz file specified in ConfigurationOfNacl >> platformLibraryUrl. FFILbrary subclass: #Nacl instanceVariableNames: '' classVariableNames: '' package: 'Crypto-Nacl' Nacl >> unixModuleName ^ 'libsodium.so' Nacl >> unix64ModuleName ^ 'libsodium64.so' Nacl class >> apiXXX ^ self ffiCall: #(void XXX()) module: Nacl > > I have the following system library preinstalled... > /usr/lib/x86_64-linux-gnu/libsodium.so.18.0.1: ELF 64-bit LSB shared > object > > However its api is slightly different. Pharo Nacl makes this call out... > crypto_hash_sha512_ref() > > but the system library provides... > 56: 0000000000014dc0 175 FUNC GLOBAL DEFAULT 11 > crypto_hash_sha512_final > 81: 0000000000014c40 384 FUNC GLOBAL DEFAULT 11 > crypto_hash_sha512_update > 154: 0000000000014bd0 106 FUNC GLOBAL DEFAULT 11 > crypto_hash_sha512_init > 233: 0000000000014e70 114 FUNC GLOBAL DEFAULT 11 > crypto_hash_sha512 > 342: 0000000000012330 6 FUNC GLOBAL DEFAULT 11 > crypto_hash_sha512_bytes > 351: 0000000000012340 6 FUNC GLOBAL DEFAULT 11 > crypto_hash_sha512_statebytes > > The canonical source doesn't seem to have the function > https://github.com/jedisct1/libsodium/search?utf8=%E2%9C% > 93&q=+crypto_hash_sha512_ref > so I'm curious where the "_ref" comes from. > > My options seem... > * Compile a 64-bit libsodium from source which includes "_ref" functions. > Where is such source? > * Use the system libsodium and define an FFI callout just for the one > function I need. > btw, I'm doing the latter for now as the immediate path of least resistance. Thanks Hernan, for the tip on libsodium. cheers -ben
