Both are 100% safe, if you'll take my word for it as a 3rd party who investigated them before using them with my own project's accountability and credibility and liability and well, all the various shitty ity's for using them at stake.
But I use Keychain on the daily myself, because its fastest for me to switch from SirCork to HiveStreams, to PolleNation and back again. HiveSigner does that too, but it's extra clicks. We like saving clicks! #SaveTheClicks!
But I was told about HAIOA today, Hive All In One Auth - that makes it so you can pick ANY of the available auth tools on hive, and it solves the code duplicity problem for me as an app builder by giving me one auth engine to talk to, and it does the rest with the rest of them for me.
As I keep saying everywhere, built in hive, with the hive tools available to us, and this fits that bill perfectly. When I can outsource to another hive dev project that solves a specialized problem like auth or tipping, I am not going to reinvent those wheels - for now anyway, unless my future interface and user simplicity demands and requests require it.
That's how this is gonna roll :)
Thanks for responding!
RE: HiveSigner, Hive Keychain, HiveAuth or Enter Your Key On A Site??? (later entry: PeakLock - see update inside about that oversight)