JS1k 2015 - 2163 - Details - A hyped JavaScript golfing competition

Author:

therealjampers

Twitter:

GitHub:

Facebook:

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Reddit:

/r/

Pouet:

Website:

Compo:

canvas

Demo link:

https://js1k.com/2015-hypetrain/demo/2163

Shortlink:

https://js1k.com/2163

Blog post:

please update here!

Bytes:

1024

Chars:

1024

Submission

for(_='r.@harCode!@c!$R[#(#`&&`_]].slice(^arguments[:W[r^]," ",:r?r+26function} ;r<(r0,),c.font="0+~~y*n);for())C`,1,c.fillText(x=r%i,y=r/i	6pt Courier"].t==N`;r++)x=y=r=n=3i=].d=M(++#){returnString.fromC!( M(+r)%N M)+65)A $At()-65C,n,t v=M(A(n)+@d-@rv=t?A.w[v]):@w.indexOf(N(v,v-=@d,N(v+@r)I(){R=[n=4,r=0n#r]={wtr3]:r,d6]:r};g=[W[0^123456789]P=10]||Z}W="EKMFLGDQVZNTOWYHXUSPAIBRCJQ,AJDKSIRUXBLHWTMCQGZNPYFVOEE,BDFHJLCPRTXVZNYEIWGAKMUSQOV,ESOVPZJAYQUIRHXLNFTGKDCMWBJ,VZBRGITYUPSDNHLXAWMJQOFECKZ,YRUHQSLDPXNGOKMIEBFZCWVJATB,FVPJIAOYEDRZXWGCTKUQSBNMHLC".split(","onkeypress=){$>64_22)_11,`33)||#22_22,#33m+=r=P[A(C`3210123P[A(223&$]))])},m=g="",r=6591g+=r);Z=g,I(5,2,7,25,980setInterval((){c.clearRect(0e3e31Z830)P860412r>8&&(g[r]=N`r-8bold 2	g[r4+x*n,320m.length	m[r4+x*n6top.location.hash=m},);';g=/[-^-`#$!@]/.exec(_);)with(_.split(g))_=join(shift());eval(_)

Description

Enigma machine simulator (Wehrmacht M3) with a choice of 3 out of 5 rotors (I, II, III , IV, V) a choice of 1 reflector from 2 (B, C wide) and configurable plugboard settings. Type alphabetical keys! Lower-case characters will be transformed to UPPERCASE, ciphertext will be displayed and appended to the fragment identifier of the page (location #hash) for easy "transmission". The key setup should be exchanged out of band! Tested in Firefox/Chrome/Safari. -------------------------------- "I" is exposed as a the machine Initialiser function. Boot up your own Enigma machine[1] with: I( <reflector choice>, <left rotor choice>, <middle rotor choice>, <right rotor choice>, <left rotor ring setting>, <middle rotor ring setting>, <right rotor ring setting>, <left rotor display setting>, <middle rotor display setting>, <right rotor display setting>, <PLUGBOARDMAPPING> ) eg. I(6, 4, 2, 0, 1, 2, 3, 0, 0, 25, 'PCBDEFZQVMOUJNKAHWSTLIRYXG'); Reflectors: B - 5 C - 6 Rotors: I - 0 II - 1 III - 2 IV - 3 V - 4 Ring settings are zero-based (a ring setting of 01-A is represented by 0, and 26-Z by 25). Display settings are zero-based (a display setting of A is represented by 0, and Z by 25). PLUGBOARDMAPPING is an uppercase string that maps from 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', use up to 10 pairs to be authentic! Ensure they are actually swapped not just scrambled [2] -------------------------------- Display is rendered as: REF LROT MROT RROT ABCDEFGHIJKLMNOPQRSTUVWXYZ LRING MRING RRING PLUGBOARDMAPPINGXXXXXXXXXX LDISP MDISP RDISP CIPHERTEXTORPLAINTEXTIFDECIPHERING Key: REF = reflector choice LROT = left rotor choice MROT = middle rotor choice RROT = right rotor choice LRING = left rotor ring setting MRING = middle rotor ring setting RRING = right rotor ring setting LDISP = left rotor display MDISP = middle rotor display RDISP = right rotor display -------------------------------- TDD'd with tape and compressed with ./task.js (onchange->uglify->regpack) Respect to all js1k crew and @kuvos for running this competition! @therealjampers -------------------------------- [1] Importing into browser: <body> <canvas id="cv" width="1000" height="1000"/> <script src="en1kma.js"></script> <script> c = cv.getContext("2d"); I(6, 4, 2, 0, 1, 2, 3, 0, 0, 25, 'BAULVMGJIHKDFSYPXRNZCEWQOT'); </script> </body> -------------------------------- [2] Basic plugboard mapping generator: var swaps = [] , set = {} , i , alpha = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' , plug = alpha , a , b ; while(swaps.length < 10 * 2) { // 10 pairs a = String.fromCharCode(~~(Math.random() * 26) 65); if (!set[a]) { set[a] = 1; swaps.push(a); } } while(swaps.length) { a = swaps.pop(); b = swaps.pop(); plug = plug .replace(a, '$') .replace(b, a) .replace('$', b) ; } console.log(alpha); console.log(plug);

Base64 encoded

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Original source

Original source not submitted

JS1k: The JavaScript code golfing competition

2015 - The JS1k hype train is real!