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|
// Copyright © 2020 rsiddharth <s@ricketyspace.net>
// SPDX-License-Identifier: ISC
package challenge
import (
"fmt"
"ricketyspace.net/cryptopals/lib"
)
func C4() {
const blob = `
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334b041de124f73c18011a50e608097ac308ecee501337ec3e100854201d
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45440b171d5c1b21342e021c3a0eee7373215c4024f0eb733cf006e2040c
22015e420b07ef21164d5935e82338452f42282c1836e42536284c450de3
043b452e0268e7eb005a080b360f0642e6e342005217ef04a42f3e43113d
581e0829214202063d70030845e5301f5a5212ed0818e22f120b211b171b
ea0b342957394717132307133f143a1357e9ed1f5023034147465c052616
0c300b355c2051373a051851ee154a023723414c023a08171e1b4f17595e
550c3e13e80246320b0bec09362542243be42d1d5d060e203e1a0c66ef48
e159464a582a6a0c50471310084f6b1703221d2e7a54502b2b205c433afa
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01305424231c0d2c41f105057f74510d335440332f1038ec17275f5814e1
05f12f380720ea2b19e24a07e53c142128354e2827f25a08fb401c3126a6
0d17272f53063954163d050a541b1f1144305ae37d4932431b1f33140b1b
0b4f070f071fe92c200e1fa05e4b272e50201b5d493110e429482c100730
100a3148080f227fe60a132f0c10174fe3f63d1a5d38eb414ca8e82f2b05
0a19e83c58400a023b13234572e6e4272bf67434331631e63b5e0f00175c
54520c2ceb45530e0f78111d0b0707e01e4bf43b0606073854324421e6f9
09e7585353ee4a34190de1354e481c373a1b2b0a136127383e271212191f
0f060d09fb4f2d5024022c5ff6463c390c2b5f1a5532071a31f33503fcea
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2d560d4b0618203249312a310d5f541f295c3f0f25235c2b20037d1600f3
2c245155e8253708391a7ceb0d05005c3e080f3f0f0e5a16583b111f4448
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32e902193219033c58191302441a5c1b584825ea140c290927aaea53e23c
3a36363a732e32ea3f0e430508204b332c382a19292d5b291122e123446a
1804115614031f5f571f2b143c5d3c1b257a4b37350f18445a3e08341c3d
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0028fb522104f771501a555d3f581e30e9ec3e49e3e63123432f07794145
1459f6312f000e5a1373e346e40f211e1b0b0e17000f391f170552150500
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121a42395d4c560d213b0c0a26a7e4f4382718153d5e511158a10b2c021e
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0b1415512f38580e4e2a227def242643183c224f0ea146443403022fe9fd
43eb2b1078322a02192d5b5e0c360d584d0b5e2c13072912ee32f03f4155
002a52553e08361b0be0074b573e201c164c093a5c0f0159333b59770d5b
38e63c1c5244301a5a01f26930321256143e1ae05e1120a9eaf20a192d58
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0c211dfe101702015516341136252f3f06f73247133113f5642d083a3417
015e3d51433f3c003e5e28030b1d413eee186824504b241e0f0d32373e2b
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30040c181615362e4d1016160a4a5c006eeb1d2422355a3f1028ff192a07
53f6354d4b5d121974245c14f0225713331f2e381810101428571725e432
1a2c06372d5b1419742150042d25003c2650512834ef16e51d183f0f0508
3d191107251100ee2e4125405a44174f061e0e1e5959e606530e06ed245e
3f592d47512dec5922500e460e1de7183b4c3c2e583942255a0c5d4d2305
3438001e482a002d56113a1fe13bed542d3508e22f4e22221431121c1539
ed445a5d28415073eb18022ef836274d573a48090f2a663058194901405d
215b143954fc313c1e28584b51e729ef31013b232bfb4c52e2322a2d4557
5244102e1c3d304450ee01761924e62ff2173305e15809102b2125284dfc
171a3f010f3639056f2be71c2047581de32e05a20833e1221b0e25362459
2958280de238084f5a1c292e005be71f3b311e1f415809383d3862260238
361f56ecee120156375862eb3627185c2519545149e2e50b1f3b0c4e3352
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2e125b2f2c1d0f1f170e0c51331f0c06291610345c0603791f33253f0e0c
1c2b080526133aeb3e23571d4cfa1e48057a2a010a490a50391b09514f2e
59383ae11237e5450029162d2e1d3e09221a160e42ea06ea0ca7c7ecf4ea
3d3024f34d5c07464bea3b185e110d3a10395d3b2632343cf30ca2e6065a
262f111c0e15441a4825111b185f1e5756243206125f4603e97e79582d27
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3649211f210456051e290f1b4c584d0749220c280b2a50531f262901503e
52053e3e152b5b2b4415580fec57ef5c08e5ed43cc2d2e5b40355d0d2017
6d3917263f030c4b55f0025d501e57504a122729293c4c5819680d3001ed
1e313323324e5e177b171cf70c371541395c0e2b7726e42505483014362e
1910e4f7253f0a012057e03b1e3b4201362b224ff60e0b3a1d115b043957
200c1e0b242e5e3b4755f61e3be05c040908f1234358e55562711d2efa0f
0737e0160b1d13132044080d2325f1f0ee2f00354f2106471131020a5d0b
3f21060de62c052a17576e2ce729242b3e3621300627f01e52580a480050
1b381a11351f4f5d22040c3c4b3e7d263714e8e61a571d107a34260a4a51
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3c054e2d4e2905275e640220f74f1a193f54e1ed5b4e2a290eab27a55147
33522817335316ea2f3df957e25e02030601514f09f74c2fedee102d3114
5d05231d03313826164156110c44e4111f4658005e115e300f413b430300
380bf53a4331f74627492c133fe8eb3141ee39040def040c1a0ae914e3ed
5b00f0211f0a091e05582e22f05a5d262e0ce352251d25100b102b11e339
36053935f051f959093252411e2d5af81f360c0fa15d0b373b1d26323b77
501424184202206215e05944505c4817514540445b0207025de05b050932
0a5a114515536f553a352c513f0b12f700345fa51d5efb28222676e559ea
561b0557403f5f534a574638411e2d3b3c133f79555c333215e6f5f9e7ec
6658f7210218110f00062752e305f21601442c5310162445ed4d175630f3
0e2154253c4a22f02e1b0933351314071b521513235031250c18120024a1
e03555453d1e31775f37331823164c341c09e310463438481019fb0b12fa
37eee654410e4007501f2c0e42faf50125075b2b46164f165a1003097f08
2a5332145851553926523965582e5b2f530d5d1e292046344feaed461517
583d2b06251f551d2f5451110911e6034147481a05166e1f241a5817015b
1f2d3f5c310c315402200010e24135592435f71b4640540a041012ee1b3f
5b2010060e2f5a4d045e0b36192f79181b0732183b4a261038340032f434
3a5557340be6f5315c35112912393503320f54065f0e275a3b5853352008
1c595d183539220eec123478535337110424f90a355af44c267be848173f
41053f5cef5f6f56e4f5410a5407281600200b2649460a2e3a3c38492a0c
4c071a57e9356ee415103c5c53e254063f2019340969e30a2e381d5b2555
32042f46431d2c44607934ed180c1028136a5f2b26092e3b2c4e2930585a`
blobs := make([]string, 327)
for i, j := 1, 0; i < len(blob); i++ {
if blob[i] == '\n' {
j += 1
i += 1
}
blobs[j] += string(blob[i])
}
i, k, ds, scr := 0, byte(0), "", 100.0
for j := 0; j < len(blobs); j++ {
c, as, s := lib.XORCrackSingleKey(blobs[j])
if s < scr {
i = j
k = c
ds = as
scr = s
}
}
fmt.Printf("Blob encrypted with a single character: %v\n", blobs[i])
fmt.Printf("Key is '%c'\n", k)
fmt.Printf("Decrypted string: '%v' (Score: %v)\n", ds, scr)
}
// Output:
//
// Blob encrypted with a single character: 7b5a4215415d544115415d5015455447414c155c46155f4058455c5b523f
// Key is '5'
// Decrypted string: 'Now that the party is jumping
// ' (Score: 0.05999999999999994)
|
