Base32 decoding error

polaris · · 1584 次点击

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I have 2 different encoded data, one is 64-bit and the other one is 32-bit, with no compression. Both should result in a float64 array for the 64-bit I can do this: <pre><code>dataArray, err = base64.StdEncoding.DecodeString(string(bin)) </code></pre> and the result is exactly what I should see. for the 32-bit, I'm trying this: <pre><code>dataArray, err = base32.StdEncoding.DecodeString(string(bin)) </code></pre> and I'm getting this error: <pre><code>32-bit decoder: illegal base32 data at input byte 0 </code></pre> Can someone explain to me why is this happening ? go playground: <a href="https://play.golang.org/p/9iSk7s6Nst" rel="nofollow">https://play.golang.org/p/9iSk7s6Nst</a> Just in case, here it is the encoded data: <binary>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</binary> <hr/>**评论：** JHunz: <pre>Your problem is that that input data isn't Base32 encoded. Base32 encoding only uses the characters A-Z (capital only), 2-7, and =. </pre>prvst: <pre>so does that mean I have to use the Base64 function to decode it?</pre>JHunz: <pre>It certainly looks like Base64 data to me. Without your conversion code I can't verify that it turns into what you expect it to.</pre>prvst: <pre>I updated the code on the playground. The implementation is something simple just to get the float values. <a href="https://play.golang.org/p/9iSk7s6Nst" rel="nofollow">https://play.golang.org/p/9iSk7s6Nst</a> As a reference, the first values should be : [21,248.82 6,523.70 799.10 ...] Also, the exact same code works for the 64-bit encoding data, but not for this one</pre>drvd: <pre>Just an educated guess: Maybe you have 32bit floats encoded as base64?</pre>prvst: <pre>Hum.. yes that makes sense for sure. I swapped all 64's for 32's on the URL posted above and the numbers still don't match...</pre>prvst: <pre>OK, I fixed the issue. I changed all 64's to 32's and I changed the counter from == 8 to == 4. Thank you all for helping</pre>dnshane: <pre>Surely the problem is the XML that's wrapping the data and the slashes. So get rid of: <pre><code><binary> </binary> </code></pre> As well as the / at the beginning of each line, and it should work.</pre>prvst: <pre>Hey friend, The <binary> tags are just to mark the start and end of the string, it's a common way of "showing" things making sure people do not add or remove any parts by accident. When converting the string I'm removing the tags for sure, check the URL I posted above. Thanks for helping though.</pre>