equivalent PHP sha1 in C#, with raw binary format and a length of 20

Question

Possible Duplicate:
C# SHA-1 vs. PHP SHA-1…Different Results?

I am trying to find out what the PHP sha1(string,true); equivalent method is in C#. I tried searching a lot and also tried writing some code, but couldn't find any solution. Can anyone tell me how to get sha1 in row binary format with a length of 20, like the PHP function: SHA1 in the PHP manual?

In PHP:

sha1($sampletext, true);

In C#:

string sampletext= "text";
SHA1 hash = SHA1CryptoServiceProvider.Create();
byte[] plainTextBytes = Encoding.ASCII.GetBytes(dataString);
byte[] hashBytes = hash.ComputeHash(plainTextBytes);

Both return a different output.

Thanks

score 2 · Accepted Answer · answered Aug 06 '12 at 05:38

This IDEOne test seems to produce the same output as using UTF-8 encoding for the hash in C#:

string sampletext = "text";
System.Security.Cryptography.SHA1 hash = System.Security.Cryptography.SHA1CryptoServiceProvider.Create();
byte[] plainTextBytes = Encoding.UTF8.GetBytes(sampletext);
byte[] hashBytes = hash.ComputeHash(plainTextBytes);

foreach (byte b in hashBytes) {
    Console.Write(string.Format("{0:x2}", b));
}

This will be platform-specific depending on how the PHP handles it. It may even be ASCII from some of the documentation. It's all to do with character encoding.

Thank you Simon, Your Answer helped me, and also helped me to clear some doubts. — Don Yogesh, Aug 06 '12 at 07:08

equivalent PHP sha1 in C#, with raw binary format and a length of 20

1 Answers1