How are the chars being decoded

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Ive been searching through google but cant seem to figure out how its been decoded ?

Decode from base64 to ASCII Dec.
For example,
CS20UumGFaSm0QXZ54HADg => 9 45 180 82 233 134 21 164 166 209 5 217 231 129 192 14

I used all online converters, if possible i would like to get in in perl or c#.

All help would be greatfull.


thanks in advance

Posted 1-Aug-14 0:41am

dennis2704

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OriginalGriff · Answer 1 · 2014-08-01T01:14:00

Base64 is not an encryption algorithm - it is a translation algorithm. The difference being that encryption is secure, and translation isn't...

Base64 is simple, and converts binary 8 bit data into a form that is transmittable over a character based data link such as HTML which does not support binary. It in no way encrypts data, and it can be reversed with ease by even novice coders. There is a good explanation here: http://en.wikipedia.org/wiki/Base64[^]

Jochen Arndt · Answer 2 · 2014-08-01T01:18:00

Solution 2

With Perl you can use the MIME::Base64[^] package. This is returned as first Google result when searching for 'base64 decoder perl'.

Posted 1-Aug-14 1:18am

Jochen Arndt

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dennis2704 1-Aug-14 8:09am

Yes i understand i allready tried the MIME::Base64 package but the outcome isnt what i get?

use MIME::Base64;

my $chars = "CS20UumGFaSm0QXZ54HADg";
my $encoded = encode_base64($chars);
print "Encode $encoded";

Regards

Jochen Arndt 1-Aug-14 8:22am

Your string is already encoded. So you must *decode* it:
my $decoded = decode_base64($chars);
print "Decoded $decoded";

dennis2704 2-Aug-14 10:25am

Ok so im testing the code you gave me but i thought i was supposed to be getting the numbers as output but instead of that im getting " -┤RÚå§ñªÐ♣┘þü└♫ " as output.

Maybe you could help me with it?

Thanks in advance
dennis

Jochen Arndt 4-Aug-14 3:29am

Base64 encoding is mainly used to encode binary data. And it seems that your data are binary. So it makes no sense to use the print() function. Treat the returned string as byte array instead. To print it as hex string you might use:
my $hex_str = unpack("H*",$decoded);
print $hex_str;