我试图在PHP5中复制一些C#代码并遇到一些困难。
C#代码如下,重要的是要注意它不能更改:
string s = strToHash;
UnicodeEncoding encoding = new UnicodeEncoding();
byte[] bytes = encoding.GetBytes(s);
SHA1Managed managed = new SHA1Managed();
bytes = encoding.GetBytes(Convert.ToBase64String(managed.ComputeHash(bytes)) + "Space");
return Convert.ToBase64String(managed.ComputeHash(bytes));
我写的用于复制它的PHP代码如下:
utfString = mb_convert_encoding($strToHash,"UTF-16");
hashTag = sha1($utfString,true);
base64Tag = base64_encode($hashTag);
encodedBase64Tag = mb_convert_encoding($base64Tag."Space","UTF-16");
base64EncodedAgain = base64_encode($encodedBase64Tag);
echo $base64EncodedAgain
但是,两个输出不匹配。我相信这是因为PHP中的SHA1方法适用于ASCII编码的字符串,而不是传入的字符串实际使用的编码。
我想让它工作,我无法通过改变c#代码来实现它(尽管毫无疑问这将是最简单的修复)。
一些想法可以提供任何建议吗?
好的,我已根据Artefacto的建议更改了代码,但仍未按预期工作。
PHP代码现在看起来像这样:
$utfString = "\xFF\xFE".mb_convert_encoding($strToHash,"UTF-16LE");
$hashTag = sha1($utfString,true);
$base64Tag = base64_encode($hashTag);
$encodedBase64Tag = "\xFF\xFE".mb_convert_encoding($base64Tag."Space","UTF-16LE");
$hashedAgain = sha1($encodedBase64Tag,true);
$base64EncodedAgain = base64_encode($hashedAgain);
echo $base64EncodedAgain."<Br/>";
并且此方法的输出值为:
1 / Y5MCzI8vDJqc456YIicpwoyy0 =
但是,从C#代码中,值是这样的:
VPf7BhT1ksAfWbzeJw35g + bVKwY =
好吧,试试这段代码:
$utfString = mb_convert_encoding($strToHash,"UTF-16");
$hashTag = sha1($utfString,true);
$base64Tag = base64_encode($hashTag);
$encodedBase64Tag = mb_convert_encoding($base64Tag."Space","UTF-16");
$base64EncodedAgain = base64_encode(sha1($encodedBase64Tag, true));
echo $base64EncodedAgain
因为你错过了一个sha1
电话。
现在这个代码应该工作:
$utfString = mb_convert_encoding($strToHash,"UTF-16LE");
$hashTag = sha1($utfString,true);
$base64Tag = base64_encode($hashTag);
$encodedBase64Tag = mb_convert_encoding($base64Tag."Space","UTF-16LE");
$hashedAgain = sha1($encodedBase64Tag,true);
$base64EncodedAgain = base64_encode($hashedAgain);
echo $base64EncodedAgain . "<br />";
no-arg constructor的UnicodeEncoding
的文档说:
此构造函数创建一个使用小端字节顺序的实例,提供Unicode字节顺序标记,并且在检测到无效编码时不会引发异常。
现在,mb_convert_encoding
将“UTF-16”假定为“UTF-16BE”(大端)。它也不提供BOM。因此,您必须改为:
$utfString = "\xFF\xFE" . mb_convert_encoding($strToHash,"UTF-16LE");
/* ...*/
$encodedBase64Tag = "\xFF\xFE" . mb_convert_encoding($base64Tag."Space","UTF-16LE");
正如Paja指出的那样,你也错过了对sha1
的号召。
$utfString = mb_convert_encoding($strToHash,"UTF-16LE");
$hashTag = sha1($utfString,true);
$base64Tag = base64_encode($hashTag);
echo $base64Tag;