Artifact 0ed3312820dd74134c296a117343595d03fdabd4:

• File doc/34c3-presentation.fs — part of check-in [c35023502d] at 2019-02-15 18:47:22 on branch trunk — Make 34c3-presentation play again (user: bernd size: 18914)

\ Presentation on ΜΙΝΩΣ2 made in ΜΙΝΩΣ2

\ Copyright (C) 2018 Bernd Paysan


\ This program is free software: you can redistribute it and/or modify
\ it under the terms of the GNU Affero General Public License as published by
\ the Free Software Foundation, either version 3 of the License, or
\ (at your option) any later version.

\ This program is distributed in the hope that it will be useful,
\ but WITHOUT ANY WARRANTY; without even the implied warranty of
\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
\ GNU Affero General Public License for more details.

\ You should have received a copy of the GNU Affero General Public License
\ along with this program.  If not, see <http://www.gnu.org/licenses/>.

require minos2/widgets.fs

[IFDEF] android
    hidekb also android >changed hidestatus >changed previous
[THEN]

also minos

ctx 0= [IF]  window-init  [THEN]

require minos2/font-style.fs

: update-size# ( -- )
    dpy-w @ s>f 44e f/ fround to font-size#
    font-size# 16e f/ m2c:curminwidth% f!
    dpy-h @ s>f dpy-w @ s>f f/ 45% f/ font-size# f* fround to baseline#
    dpy-w @ s>f 1280e f/ to pixelsize# ;

update-size#

require minos2/text-style.fs

Variable slides[]
Variable slide#

0 Value n2-img
0 Value m2-img
0 Value $q-img

5 Constant n/m-switch
10 Constant m/$-switch

glue ' new static-a with-allocater Constant glue-left
glue ' new static-a with-allocater Constant glue-right

: >slides ( o -- ) slides[] >stack ;

: glue0 ( -- ) 0e fdup
    [ glue-left  .hglue-c ]L df!
    [ glue-right .hglue-c ]L df! ;
: trans-frame ( o -- )
    >o transp# to frame-color o> ;
: solid-frame ( o -- )
    >o white# to frame-color o> ;
: !slides ( nprev n -- )
    update-size# update-glue
    over slide# !
    slides[] $[] @ /flip drop
    slides[] $[] @ /flop drop glue0 ;
: fade-img ( r0..1 img1 img2 -- ) >r >r
    [ whitish x-color 1e f+ ] Fliteral fover f-
    r> >o to frame-color parent-w .parent-w /flop drop o>
    [ whitish x-color ] Fliteral f+
    r> >o to frame-color parent-w .parent-w /flop drop o> ;
: anim!slides ( r0..1 n -- )
    slides[] $[] @ /flop drop
    fdup fnegate dpy-w @ fm* glue-left  .hglue-c df!
    -1e f+       dpy-w @ fm* glue-right .hglue-c df! ;

: prev-anim ( n r0..1 -- )
    dup 0<= IF  drop fdrop  EXIT  THEN
    fdup 1e f>= IF  fdrop
	dup 1- swap !slides +sync +resize  EXIT
    THEN
    1e fswap f-
    1- sin-t anim!slides +sync +resize ;

: next-anim ( n r0..1 -- )
    dup slides[] $[]# 1- u>= IF  drop fdrop  EXIT  THEN
    fdup 1e f>= IF  fdrop
	dup 1+ swap !slides +sync +resize  EXIT
    THEN
    1+ sin-t anim!slides +sync +resize ;

1e FValue slide-time%

: prev-slide ( -- )
    slide-time% anims[] $@len IF  anim-end .2e f*  THEN
    slide# @ ['] prev-anim >animate ;
: next-slide ( -- )
    slide-time% anims[] $@len IF  anim-end .2e f*  THEN
    slide# @ ['] next-anim >animate ;

: slide-frame ( glue color -- o )
    font-size# 70% f* }}frame ;

box-actor class
    \ sfvalue: s-x
    \ sfvalue: s-y
    \ sfvalue: last-x
    \ sfvalue: last-t
    \ sfvalue: speed
end-class slide-actor

:noname ( axis dir -- ) nip
    0< IF  prev-slide  ELSE  next-slide  THEN ; slide-actor is scrolled
:noname ( rx ry b n -- )  dup 1 and 0= IF
	over $8  and IF  prev-slide  2drop fdrop fdrop  EXIT  THEN
	over $10 and IF  next-slide  2drop fdrop fdrop  EXIT  THEN
	over -$2 and 0= IF
	    fover caller-w >o x f- w f/ o>
	    fdup 0.1e f< IF  fdrop  2drop fdrop fdrop  prev-slide  EXIT
	    ELSE  0.9e f> IF  2drop fdrop fdrop  next-slide  EXIT  THEN  THEN
	THEN  THEN
    [ box-actor :: clicked ] ; slide-actor to clicked
:noname ( ekey -- )
    case
	k-up      of  prev-slide  endof
	k-down    of  next-slide  endof
	k-prior   of  prev-slide  endof
	k-next    of  next-slide  endof
	k-volup   of  prev-slide  endof
	k-voldown of  next-slide  endof
	s-k3      of  1e ambient% sf!
	    Ambient 1 ambient% opengl:glUniform1fv  +sync endof
	k-f3      of  ambient% sf@ 0.1e f+ 1e fmin  ambient% sf!
	    Ambient 1 ambient% opengl:glUniform1fv  +sync endof
	k-f4      of  ambient% sf@ 0.1e f- 0e fmax  ambient% sf!
	    Ambient 1 ambient% opengl:glUniform1fv  +sync endof
	s-k5      of  1e saturate% sf!
	    Saturate 1 saturate% opengl:glUniform1fv  +sync endof
	k-f5      of  saturate% sf@ 0.1e f+ 3e fmin saturate% sf!
	    Saturate 1 saturate% opengl:glUniform1fv  +sync endof
	k-f6      of  saturate% sf@ 0.1e f- 0e fmax saturate% sf!
	    Saturate 1 saturate% opengl:glUniform1fv  +sync endof
	[ box-actor :: ekeyed ]  EXIT
    endcase ; slide-actor to ekeyed
\ :noname ( $xy b -- )  dup 1 > IF
\ 	[ box-actor :: touchdown ] EXIT
\     THEN  drop
\     xy@ to s-y to s-x ftime to last-t
\     true to grab-move? ; slide-actor is touchdown
\ :noname ( $xy b -- ) dup 1 > IF
\ 	[ box-actor :: touchmove ] EXIT
\     THEN  drop xy@ fdrop
\     ftime last-t fover to last-t f- \ delta-t
\     last-x fover to last-x f-       \ delta-x
\     fswap f/ caller-w .w f/ to speed
\     last-x s-x f- caller-w .w f/ fdup f0< IF \ to the right
\ 	1e f+ slide# @ prev-anim
\     ELSE \ to the left
\ 	slide# @ next-anim
\     THEN ; slide-actor is touchmove
:noname drop
    xy@ dpy-h @ s>f fswap f- dpy-h @ 2/ fm/ lightpos-xyz sfloat+ sf!
    dpy-w @ s>f f- dpy-w @ 2/ fm/ lightpos-xyz sf!
    3.0e lightpos-xyz 2 sfloats + sf!
    LightPos 1 lightpos-xyz opengl:glUniform3fv  +sync ; slide-actor is touchmove
\ :noname ( $xy b -- )  dup 1 > IF
\ 	[ box-actor :: touchup ] EXIT
\     THEN  2drop
\     slide# @ 1e next-anim
\     false to grab-move? ; slide-actor is touchup

: slide[] ( o -- o )
    >o slide-actor new to act o act >o to caller-w o> o o> ;

glue-left  >o 1glue vglue-c glue! 1glue dglue-c glue! o>
glue-right >o 1glue vglue-c glue! 1glue dglue-c glue! o>

tex: net2o-logo
tex: minos2
tex: $quid
' net2o-logo "net2o-200.png" 0.666e }}image-file Constant net2o-glue
' minos2 "net2o-minos2.png" 0.666e }}image-file Constant minos2-glue
' $quid  "squid-logo-200.png" 0.5e }}image-file Constant $quid-glue

: img ( xt xt -- o ) 2>r
    baseline# 0e to baseline#
    {{ 2r> }}image-tex /right
    glue*l }}glue
    }}v >o font-size# f2/ to border o o>
    to baseline# ;

: pres-frame ( color -- o1 o2 )
    glue*wh swap color, slide-frame dup .button1 simple[] ;

{{
{{ glue-left }}glue

\ page 0
{{
$FFFFFFFF pres-frame
{{
glue*l }}glue \ ) $CCDDDD3F 4e }}frame dup .button1
"net2o: GUI, realtime mixnet, $quid" /title
"($quid = Ethical micropayment with efficient BlockChain)" /subtitle
glue*2 }}glue \ ) $CCDDDD3F 4e }}frame dup .button1
"Bernd Paysan" /author
"34c3, Leipzig #wefixthenet" /location
glue*l }}glue \ ) $CCDDDD3F 4e }}frame dup .button1
}}v box[] >o font-size# to border o Value title-page o o>
}}z box[] dup >slides

\ page 1
{{
$FFFFFFFF pres-frame
{{
"Motivation" /title
glue*l }}glue \ ) $CCDDDD3F 4e }}frame dup .button1
tex: bad-gateway
' bad-gateway "bad-gateway.png" 0.666e }}image-file
Constant bgw-glue /center
glue*l }}glue \ ) $CCDDDD3F 4e }}frame dup .button1
}}v box[] >bdr
}}z box[] /flip dup >slides

\ page 2
{{
$FF7F7FFF pres-frame
{{
"4 Years after Snowden" /title
"What has changed?" \\
\skip
"Politics" /subsection
blackish
"  Fake News/Hate Speech as excuse for censorship #NetzDG" "🤦" e\\
"  Crypto Wars rebranded as “reasonable encryption”" "🤦🤦" e\\
"  Legalize it (dragnet surveillance)" "🤦🤦🤦" e\\
"  Kill the link (EuGH and LG Humbug)" "🤦🤦🤦🤦" e\\
"  Privacy: nobody is forced to use the Interwebs (Jim Sensenbrenner)" "🤦🤦🤦🤦🤦" e\\
"  “Crypto” now means BitCoin" "🤦🤦🤦🤦🤦🤦" e\\
\skip
"Competition" /subsection
"  faces Stasi–like Zersetzung (Tor project)" \\
\skip
"Solutions" /subsection
"  net2o starts becoming useable" \\
glue*l }}glue \ ) $CCDDDD3F 4e }}frame dup .button1
}}v box[] >o o Value snowden-page font-size# to border o o>
}}z box[] /flip dup >slides

\ page 3
{{
$BFFFBFFF pres-frame
{{
"net2o in a nutshell" /title
"net2o consists of the following 6 layers (implemented bottom up):" \\
\skip
{{
vt{{
"2. " b0 blackish "Path switched packets with 2" }}text
"n" }}smalltext >o font-size# -0.4e f* to raise o o>
" size writing into shared memory buffers" }}text  glue*l }}glue }}h box[] >bl
"3. " "Ephemeral key exchange and signatures with Ed25519," b\\
"" "symmetric authenticated encryption+hash+prng with Keccak," b\\
"" "symmetric block encryption with Threefish" b\\
"" "onion routing camouflage probably with AES" b\\
"4. " "Timing driven delay minimizing flow control" b\\
"5. " "Stack–oriented tokenized command language" b\\
"6. " "Distributed data (files, messages) and distributed metadata (DHT)" b\\
"7. " "Apps in a sandboxed environment for displaying content" b\\
}}vt
glue*l }}glue \ ) $CCDDDD3F 4e }}frame dup .button1
}}v box[] >bdr
}}z box[] /flip dup >slides

\ page 4
{{
$BFFFBFFF pres-frame
{{
"Realtime Mixnet" /title
"Problem with onion routing: Timing correlation" \\
"Problem with mixnets: need to wait for enough messages" \\
"Solution: Fill up the output with constant bandwidth garbage" \\
"and otherwise set up the network as with a mixnet" \\
"Bonus: Evenly distribute packets over a set of mix routes, to get more bandwidth" \\
glue*l }}glue \ ) $CCDDDD3F 4e }}frame dup .button1
}}v box[] >bdr
}}z box[] /flip dup >slides

\ page 5
{{
$BFBFFFFF pres-frame
{{
"ΜΙΝΩΣ2 technology" /title
"ΜΙΝΩΣ2 starts at the DOM layer" \\
\skip
vt{{
"Rendering: " "OpenGL (ES), Vulkan backend possible" b\\
"Font to texture: " "Freetype–GL (with own improvements)" b\\
"Image to texture: " "SOIL2 (needs some bugs fixed)" b\\
"Video to texture: " "OpenMAX AL (Android), gstreamer for Linux (planned)" b\\
"Coordinates: " "Single float, origin bottom left" b\\
{{ "Typesetting: " b0 blackish
"Boxes & Glues close to " }}text
\LaTeX
" — including ascender & descender" }}text glue*l }}h box[] >bl
"" "Glues can shrink, not just grow" b\\
"Object System: " "extremely lightweight Mini–OOF2" b\\
"Class number: " "Few classes, many possible combinations" b\\
}}vt
glue*l }}glue \ ) $CCDDDD3F 4e }}frame dup .button1
}}v box[] >bdr
}}z box[] /flip dup >slides

\ page 6
{{
$FFBFFFFF pres-frame
{{
"ΜΙΝΩΣ2 Widgets" /title
"Design principle is a Lego–style combination of many extremely simple objects" \\
{{ {{ vt{{
"actor " "base class that reacts on all actions (clicks, touchs, keys)" b\\
"widget " "base class for all visible objects" b\\
{{ "edit " b0 blackish "editable text element " }}text
\chinese "复活节快乐！" }}edit dup Value edit-field glue*l }}glue }}h edit-field edit[] >bl
\latin \normal "glue " "base class for flexible objects" b\\
"tile " "colored rectangle" b\\
"frame " "colored rectangle with borders" b\\
"text " "text element" b\\
also fonts
[IFDEF] emoji
    "emoji " "emoji element " "😀🤭😁😂😇😈🙈🙉🙊💓💔💕💖💗💘🍺🍻🎉🎻🎺🎷" bbe\\
[ELSE]
    "emoji " "emoji element (no emoji font found)" b\\
[THEN]
previous
"icon " "image from an icon texture" b\\
"image " "larger image" b\\
"animation " "action for animations" b\\
"canvas " "vector graphics (TBD)" b\\
"video " "video player (TBD)" b\\
}}vt
glue*l }}glue
tex: vp0 glue*l ' vp0 }}vp vp[]
$FFBFFFFF color, to slider-color
font-size# f2/ f2/ to slider-border
dup font-size# f2/ fdup vslider
}}h box[]
}}v box[] >bdr
}}z box[]
/flip dup >slides

\ page 7
{{
$BFFFFFFF pres-frame
{{
"ΜΙΝΩΣ2 Boxes" /title
{{
"Just like " }}text \LaTeX ", boxes arrange widgets/text" }}text glue*l }}h box[]
>bl
\skip
vt{{
"hbox " "Horizontal box, common baseline" b\\
"vbox " "Vertical box, minimum distance a baselineskip (of the hboxes below)" b\\
"zbox " "Overlapping several boxes" b\\
"grid " "Free widget placements (TBD)" b\\
"slider " "horizontal and vertical sliders (composite object)" b\\
\skip
"There will be some more variants for tables and wrapped paragraphs" \\
}}vt
glue*l }}glue
}}v box[] >bdr
}}z box[] /flip dup >slides

\ page 8
{{
$FFFFBFFF pres-frame
{{
"ΜΙΝΩΣ2 Displays" /title
"Render into different kinds of displays" \\
\skip
vt{{
"viewport " "Into a texture, used as viewport" b\\
"display " "To the actual display" b\\
}}vt
glue*l }}glue
}}v box[] >bdr
}}z box[] /flip dup >slides

\ page 9
{{
$BFDFFFFF pres-frame
{{
"Minimize Draw Calls" /title
"OpenGL wants as few draw–calls per frame, so different contexts are drawn" \\
"in stacks with a draw–call each" \\
\skip
vt{{
"init " "Initialization round" b\\
"bg " "Background round" b\\
"icon " "draw items of the icon texture" b\\
"thumbnail " "draw items of the thumbnail texture" b\\
"image " "images with one draw call per image" b\\
"marking " "cursor/selection highlight round" b\\
"text " "text round" b\\
"emoji " "emoji round" b\\
}}vt
glue*l }}glue
}}v box[] >bdr
}}z box[] /flip dup >slides

\ page 10
{{
$D4AF37FF pres-frame
{{
"$quid & SwapDragonChain" /title
"Topics:" /subsection
\skip
vt{{
"Money " "What’s that all about?" b\\
"BitCoin " "Shortcomings of a first proof of concept" b\\
"Wealth " "Ethical implication in deflationary systems" b\\
"Proof of " "Trust instead Work" b\\
"BlockChain " "What’s the actual point?" b\\
"Scale " "How to scale a BlockChain?" b\\
"$quid " "Ethical ways to create money" b\\
}}vt
glue*l }}glue
}}v box[] >bdr
{{
glue*l }}glue
tex: $quid-logo-large
	' $quid-logo-large "squid-logo.png" 0.666e }}image-file drop
	>o $FFFFFFBB color, to w-color o o> /right
}}v box[] >bdr
}}z box[] /flip dup >slides

\ page 11
{{
$e4cF77FF pres-frame
{{
"What’s Money?" /title
vt{{
"Commodity ~: " "Objects with inherent value" b\\
"Promissory note: " "Bank created paper for commodity" b\\
"Representative ~: " "Promise to exchange with “standard object” (e.g. gold)" b\\
"Fiat ~: " "No inherent value; promise, if any, as legal tender" b\\
"Legal tender: " "Medium of payment by law" b\\
}}vt
glue*l }}glue
}}v box[] >bdr
{{
glue*l }}glue
{{
{{
tex: shell-coins
tex: feiqian
tex: huizi
tex: chao
glue*l }}glue
' shell-coins "shell-coins.png" 0.666e }}image-file drop
glue*l }}glue
' feiqian "feiqian.png" 0.666e }}image-file drop
glue*l }}glue
' huizi "huizi.png" 0.666e }}image-file drop
glue*l }}glue
' chao "chao.jpg" 0.666e }}image-file drop
glue*l }}glue
}}h box[]
tex: vp1 glue*l ' vp1 }}vp vp[]
}}v box[] >bdr
}}z box[]
/flip dup >slides

\ page 12
{{
$f4cF57FF pres-frame
{{
"BitCoins — early “Crypto” shortcomings" /title
vt{{
"• " "Proof of work: wasteful and yet only marginally secure" b\\
"• " "Inflation is money’s cancer, deflation its infarct" b\\
"• " "Consequences: unstable exange rate, high transaction fees" b\\
"• " "Ponzi scheme–style bubble" b\\
"• " "(Instead of getting Viagra spam I now get BitCoin spam)" b\\
"• " "Can’t even do the exchange transaction on–chain" b\\
}}vt
glue*l }}glue
}}v box[] >bdr
{{
glue*l }}glue
tex: bitcoin-bubble
' bitcoin-bubble "bitcoin-bubble.png" 0.85e }}image-file drop /right
}}v box[] >bdr
}}z box[] /flip dup >slides

\ page 13
{{
$e4df67ff pres-frame
{{
"Wealth & Ethics" /title
vt{{
"• " "Huge first mover advantage" b\\
"• " "Already worse wealth distribution than neoliberal economy" b\\
"• " "Huge inequality drives society into servitude, not into freedom" b\\
"• " "No concept of a credit" b\\
"• " "Lightning network also binds assets (will have fees as consequence)" b\\
}}vt
glue*l }}glue
}}v box[] >bdr
{{
glue*l }}glue
tex: free-market
' free-market "free-market.jpg" 0.666e }}image-file drop /right
}}v box[] >bdr
}}z box[] /flip dup >slides

\ page 14
{{
$a4df87ff pres-frame
{{
"Proof of What?!" /title
vt{{
"Challenge " "Avoid double–spending" b\\
"State of the art: " "Proof of work" b\\
"Problem: " "Proof of work burns energy and GPUs" b\\
"Suggestion 1: " "Proof of stake (money buys influence)" b\\
"Problem: " "Money corrupts, and corrupt entities misbehave" b\\
"Suggestion 2: " "Proof of well–behaving (trust, trustworthyness)" b\\
"How? " "Having signed many blocks in the chain gains points" b\\
"Multiple signers " "Not only have one signer, but many" b\\
"Suspicion " "Don't accept transactions in low confidence blocks" b\\
"Idea " "Repeated prisoner’s dilemma rewards cooperation" b\\
}}vt
\skip
"BTW: The attack for double spending also requires a MITM–attack" \\
glue*l }}glue
}}v box[] >bdr
}}z box[] /flip dup >slides

\ page 15
{{
$a4df87ff pres-frame
{{
"BlockChain" /title
vt{{
"• " "Banks distrust each others, too (i. e. GNU Taler is not a solution)" b\\
"• " "Problem size: WeChat Pay peaks at 0.5MTPS (BTC at 5TPS)" b\\
"• " "Lightning Network doesn’t stand an overrun–the–arbiter attack" b\\
"• " "Therefore, the BlockChain itself needs to scale" b\\
\skip
"• " "Introduce double entry booking into the distributed ledger" b\\
"• " "Partitionate the ledgers by coin pubkey" b\\
"• " "Use n–dimensional ledger space to route transactions" b\\
}}vt
glue*l }}glue
{{
tex: stage1
tex: stage2
' stage1 "ledger-stage1.png" 0.666e }}image-file drop
"   " }}text
' stage2 "ledger-stage2.png" 0.666e }}image-file drop
glue*l }}glue
}}h box[]
}}v box[] >bdr
{{
glue*l }}glue
tex: bank-robs-you
' bank-robs-you "bank-robs-you.jpg" 0.666e }}image-file drop /right
}}v box[] >bdr
}}z box[] /flip dup >slides

\ page 16
{{
$a4df87ff pres-frame
{{
"$quid: Ethical mining" /title
vt{{
"• " "Concept of mining: Provide difficult and rare work" b\\
"• " "Suggesting: Provide vouchers for free software development sponsorships" b\\
"• " "These vouchers are tradeable on their own" b\\
"• " "Free software is public infrastructure for the information age" b\\
"• " "That way, we can encourage people to sponsor out of self–interest" b\\
"• " "They get a useful and valueable token back" b\\
}}vt
glue*l }}glue
}}v box[] >bdr
}}z box[] /flip dup >slides

\ page 17
{{
$FFFFFFFF pres-frame
vt{{
"Literature & Links" /title
{{
"Bernd Paysan " "net2o fossil repository" bi\\
"" "https://fossil.net2o.de/net2o/" bm\\
"Bernd Paysan " "$quid cryptocurrency & SwapDragonChain" bi\\
"" "https://squid.cash/" bm\\
}}vt
glue*l }}glue
}}v box[] >bdr
}}z box[] /flip dup >slides

\ end
glue-right }}glue
}}h box[]
{{
' net2o-logo net2o-glue  img dup to n2-img
' minos2     minos2-glue img dup to m2-img /flip
' $quid      $quid-glue  img dup to $q-img /flip
}}z
}}z slide[]
to top-widget

also opengl

: !widgets ( -- )
    set-fullscreen-hint 1 set-compose-hint
    top-widget .htop-resize
    .3e ambient% sf! set-uniforms ;

previous

also [IFDEF] android android [THEN]

: presentation ( -- )  1config
    [IFDEF] hidestatus hidekb hidestatus [THEN]
    !widgets widgets-loop ;

previous

script? [IF]
    next-arg s" time" str= [IF]  +db time( \ ) [THEN]
    presentation bye
[ELSE]
    presentation
[THEN]