javascript - How Can decode sha1 code? -

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i have code can't decode need you. please me. firstly don't know type. ? sha1 ? md5 ? hash ? know code have 40 character.

how can decode security code ? it's have game score need decode can't decode it.

this code: "security":"c6aefe7f8c9fd439f59635efc82fcbd4f6cd4b9c"

it's protect game inform. when changed anything, it's not confirm security code.

full code: {"security":"c6aefe7f8c9fd439f59635efc82fcbd4f6cd4b9c","time":40844,"numberofbirdsshot":2,"type":"levelcomplete","blocks":"800,100,130,130,130,130,310,110,300,300,110,10,150,70,120,60,40,60,60,110,130,80,70,140,180,20,190,20,40,40,90,70,10,10,40,10,40,190,190,40,40,50,20,130,20,140,10,60,90,120,120,10,10,80,100,120,30,90,90,290,100,80,120,70,70,370,150,50,50,160,160,10,30,250,160,180,180,130,70,70,130,60,30,30,130,320,70,70,170,70,150,40,40,90,30,110,120,270,60,40,180,140,220,30,20,160,460,10,30,70,110,350,290,700,550,90,100,90,10,100,40,40,80,40,40,170,80,80,70,70,70,120,170,10,20,50,10,10,40,70,70,50,20,80,80,20,20,90,220,220,230,50,20,20,80,60,30,30,280,90,50,260,80,120,80,80,50,110,90,20,20,30,30,60,70,40,40,10,30,110,100,50,40,50,100,90,20,20,30,160,10,10,20,10,10,90,70,30,210,180,90,80,80,40,160,60,30,80,80,80,0,500,5000,500,500,500,500,5000,500,500,500,500,500,500,500,500,500,500,500,5000,500,500,5000,500,500,500,500,500,500,0,10000,10000","sessionid":"2dab169cf4f766cc69ca2c5a02339cb7.f119dcaaa5c087f52aa2ad687312f9f46d402972","levelid":"1-1","score":73150,"gameplay":"win1-1@@2@321:16.489984194253722:-25.291503791549072:1:-161.45947702629903@505:16.306849998012037:-27.166930977940375:1:172.61390103177405@@2@333@517@@0","userlevelid":"0c4679cd-5fb0-441e-a257-a060010bdb3d","userid":"1a7c1755-a7e7-48a0-9e7d-a04a0142a595"}

you can't decode sha1 hash.

a cryptographically strong hash function exhibits 2 features: it irreversible , minimizes collisions. irreversibility means original data cannot reconstructed hash. cf. encryption, must reversible (see write-only memory.) collision occurs when 2 different sets of data generate same hash.


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