doucu9677 2013-04-19 11:02
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Go和PHP中的SHA256提供不同的结果

I'm trying to send a SHA256 hashed string over HTTP to a server, where I want to authenticate by performing a SHA256 hash and verifying the two match. For testing purposes I'm using the same string, however my results do not match up. Could this be something with default encoding schemes for my base64_encode calls? Thanks.

In PHP I'm doing:

$sha = hash("sha256", $url, true);
$sha = base64_encode(urlencode($sha));

And in Go I'm doing

//convert string to byte slice
converted := []byte(to_hash)

//hash the byte slice and return the resulting string
hasher := sha256.New()
hasher.Write(converted)
return (base64.URLEncoding.EncodeToString(hasher.Sum(nil)))
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  • dqxsuig64994 2013-04-19 13:12
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    I was able to figure it out after a while. I standardized both to hexadecimal encoding. To accomplish this I changed the code as follows:

    PHP:

    $sha = hash("sha256", $url, false); //false is default and returns hex
    //$sha = base64_encode(urlencode($sha)); //removed
    

    Go:

    //convert string to byte slice
    converted := []byte(to_hash)
    
    //hash the byte slice and return the resulting string
    hasher := sha256.New()
    hasher.Write(converted)
    return (hex.EncodeToString(hasher.Sum(nil))) //changed to hex and removed URLEncoding
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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