#asciilifeform | 2020-01-06

shinohai: ./ticker btc eur

btcinfobot: Current BTC price in EUR: 6602.16

shinohai: of possible listening pleasure of whaack this morning: http://btc.info.gf/blog/aria-detta-la-frescobalda.html

whaack: shinohai: ty! you're doing the lord's work backing this up

shinohai: I've got some other segovia stuff I should prolly upload, all mp4 format so can play in own browser if needed.

whaack: shinohai: where'd you get it? ripping youtube videos or..?

shinohai: yeah i found a link to a yt video on a spanish guitar forum, had never seen that vid before today.

shinohai: yt vids being as fickle as they are, best save a copy of stuff i like *shrugs*

whaack: shinohai: yeah, there was some guy who made a video series on spanish phonetics that I found quite useful. He discussed details I haven't found elsewhere, like how to do the trill'd R after an '/s/' from the previous word. (saying las rodillas quickly is more difficult than just "rodillas".) But the videos all vanished : /

shinohai: Spanish kinda worked best for me just getting out there and holding conversations in it, never really did videos.

whaack: shinohai: weren't you the one who sent me to the butterfly Spanish series? :D

shinohai: i don't remember. i remember watching a few videos, then just leaving univison on in background all the time xD

shinohai: Pentagon Chief of Staff has just resigned. O.o

feedbot: http://qntra.net/2020/01/us-defense-secretarys-chief-of-staff-resigns-iraq-threatened-with-sanctions-for-expelling-usg-troops/ << Qntra -- US "Defense" Secretary's Chief Of Staff Resigns Iraq Threatened With Sanctions For Expelling USG Troops

feedbot: http://www.loper-os.org/?p=3625 << Loper OS -- "Finite Field Arithmetic." Chapter 20: "Litmus", a Peh-Powered Verifier for GPG Signatures.

shinohai: nice work asciilifeform

asciilifeform: shinohai: it's pretty basic atm.

asciilifeform: defo needs moar test, and found it difficult to test given as apparently i'm the only (?) one who has the sha512 knob set in ye olde gpg

asciilifeform: ( saw no reason to make the thing 10x moar complicated to support the even more rubbish ancient hashes like sha1 )

asciilifeform: it ~does~ make finally possible to run a vtron w/ 0 kockiana inside.

asciilifeform: *koch

asciilifeform: also demonstrates that one can do reasonably readable text processing gadgets w/out python, perl, etc.

asciilifeform: given as it is a sh script, i expect ~someone~ will turn up a sad os where it breaks...

shinohai: so as far as peh tapes go, @RSA-Public-Modulus@ is `N` and @RSA-Public-Modulus@ is the exponent correct?

asciilifeform: shinohai: mno

Apocalyptic: you mean RSA-Public-Exponent for the second right

asciilifeform: shinohai: see ch.6 re basic rsa

asciilifeform: ( or schoolbook )

asciilifeform: rsa sigs in general are computed by taking x = n ^ public_exponent mod public_modulus and comparing x to a specified form, called 'padding'

asciilifeform: in the case of gpg, the form is 'pkcs' and is discussed in the proggy comments.

asciilifeform: ( 'computed' in above, meaning 'verified'. producing the sig is different process, req'd the priv. exponent naturally )

asciilifeform: 'n' in the above is the turd obtained from a gpg sig

asciilifeform: pkcsism is computed by concatenating certain specified (see rcf4880) liquishit to the sha512 hash of the signed file under consideration.

asciilifeform: shinohai, Apocalyptic , and anyone else tuned in -- invited to try the proggy.

shinohai: it actually isnt anything difficult after all, pipe 'n' through sed -E 's/(.{70})/\1\n/g' and saved me most of elbowgrease.

asciilifeform: shinohai: post yer pub

Apocalyptic is far from having a working FFAtron

shinohai: asciilifeform: http://btc.info.gf/paste/f06049@raw

asciilifeform: shinohai: it is trickier in the general case, because some folx apparently have been signing with 'subkeys' (and gpg 'helpfully' lies to user, and tells him that he's using '$keyid' regardless)

asciilifeform: shinohai: can haz as comment on article plox

asciilifeform: shinohai: use <pre lang="text" escaped="true"> ...yourthing... </pre>

asciilifeform: err,

asciilifeform: lang="Peh"

shinohai: asciilifeform: will do re; comment. And Apocalyptic: I am quite far behind myself, just couldn't resist taking peek @ this ;)

asciilifeform: exercise for readers : make it go w/ 'clearsign' sigs. (in principle not difficult, i simply haven't gotten to it just yet)

shinohai: grr asciilifeform when posting my thing forgot to escape gt & lt when posting ID

asciilifeform: shinohai: i can fix, 1s

shinohai: kk

asciilifeform: shinohai: done

asciilifeform: this is arguably a bug in the peh colourizer for wp, i'ma fix .

shinohai: ty o7

shinohai: ^ but litmus does work for me, output: http://btc.info.gf/paste/0a9129@raw

asciilifeform: a++ shinohai

shinohai: (if it matters, pressed using esthlos-v, which does it's job so nicely)

asciilifeform: shinohai: next try it on own key/sigs

asciilifeform: !q seen-anywhere mike_c

snsabot: mike_c last seen in #asciilifeform on 2019-12-27 03:58:15: i have much more reading to do.. thanks for the links ascii.