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October 30, 2015 14:03
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Bookmarklet to generate deterministic passwords based on a service name
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<p>Minified and ready to be dragged to bookmarks toolbar<br /> | |
Remember to customize the 4 parameters at the end</p> | |
<a href="javascript:(function(c,f,g,e){var a=location.hostname.split('.');do var b=a.pop();while(a.length&&3>=b.length);this._custom_?b=prompt('Write the service name',b):this._custom_=!0;var a=b,d;for(d in e)a=a.replace(new RegExp(d,'i'),e[d]);a=a.replace(/[a-z]/,function(a){return a.toUpperCase()});a=f+a;a+=g.slice(-(c-a.length));a=a.slice(0,c);alert('Service:'+b+'\nPassword:'+a)})(10,'Gp','_T8e.P2j!',{i:'!',a:'@',s:'$',l:1,z:2,e:3,g:6,t:7,b:8,o:0});"> | |
Generate Pass | |
</a> | |
<p>Uncompressed source code</p> | |
<pre> | |
(function(length, prefix, suffix, map) { | |
/* 1.0 */ | |
var p = location.hostname.split('.'); | |
// Find service name | |
do { var service = p.pop(); } | |
while (p.length && service.length <= 3); | |
// First time assume domain | |
if (!this._custom_) { | |
this._custom_ = true; | |
} else { | |
// If clicked again let them fill the name themselves | |
service = prompt('Write the service name', service); | |
} | |
var pass = service; | |
// Replace characters, only once per character | |
for (var c in map) { | |
pass = pass.replace(new RegExp(c, 'i'), map[c]); | |
} | |
// Upper case first lower case char | |
pass = pass.replace(/[a-z]/, function(c) { return c.toUpperCase(); }); | |
// Add prefix | |
pass = prefix + pass; | |
// Fill with suffix chars up to desired length | |
var diff = length - pass.length; | |
pass += suffix.slice(-diff); | |
// Crop to desired maximum length | |
pass = pass.slice(0, length); | |
alert('Service:'+service+'\nPassword:' + pass); | |
// NOTE: Change these values to customize your pass | |
})(10, 'Gp', '_T8e.P2j!', { | |
i: '!', | |
a: '@', | |
s: '$', | |
l: 1, | |
z: 2, | |
e: 3, | |
g: 6, | |
t: 7, | |
b: 8, | |
o: 0 | |
}); | |
</pre> |
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