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POdecode base64 like string with different index table(s)
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  1. POdecode base64 like string with different index table(s)
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    copied!<p>My problem is, that I have something encoded (base64 like) with a differnet index table:</p> <pre><code>0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz+/ </code></pre> <p>instead of</p> <pre><code>ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/ </code></pre> <p>so when I use <code>base64.b64decode()</code> it gives me a wrong result. Is there a way to set this table durring conversion (as a parameter maybe)?</p> <p>Or should I "convert" the wrong base64 string, I mean replace 0 to A, 1 to B, etc... and than use base64decode? if so what is the best and fast workaround for this?</p> <p><strong>update1</strong>: I use this, which works, but looks a bit slow, and unprofessional. :)</p> <pre><code>def correctbase64(str): dicta = [ ['0','A'], ['1','B'], ['2','C'], ['3','D'], ['4','E'], ['5','F'], ['6','G'], ['7','H'], ['8','I'], ['9','J'], ['A','K'], ['B','L'], ['C','M'], ['D','N'], ['E','O'], ['F','P'], ['G','Q'], ['H','R'], ['I','S'], ['J','T'], ['K','U'], ['L','V'], ['M','W'], ['N','X'], ['O','Y'], ['P','Z'], ['Q','a'], ['R','b'], ['S','c'], ['T','d'], ['U','e'], ['V','f'], ['W','g'], ['X','h'], ['Y','i'], ['Z','j'], ['a','k'], ['b','l'], ['c','m'], ['d','n'], ['e','o'], ['f','p'], ['g','q'], ['h','r'], ['i','s'], ['j','t'], ['k','u'], ['l','v'], ['m','w'], ['n','x'], ['o','y'], ['p','z'], ['q','0'], ['r','1'], ['s','2'], ['t','3'], ['u','4'], ['v','5'], ['w','6'], ['x','7'], ['y','8'], ['z','9'] ] l = list(str) for i in range(len(l)): for c in dicta: if l[i] == c[0]: l[i] = c[1] break return "".join(l) </code></pre>
 

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