(C#) Password_Digest = Base64 (SHA-1 ( nonce + created + SHA-1 (password) ) )

Demonstrates how to compute:

Password_Digest = Base64 (SHA-1 ( nonce + created + SHA-1 (password)))

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

string password = "secret";

Chilkat.Crypt2 crypt = new Chilkat.Crypt2();
crypt.HashAlgorithm = "SHA-1";
crypt.EncodingMode = "base64";

//  Generate a 16-byte random nonce
Chilkat.Prng prng = new Chilkat.Prng();
Chilkat.BinData bd = new Chilkat.BinData();
prng.GenRandomBd(16,bd);

//  Get the current date/time in a string with this format: 2010-06-08T07:26:50Z
Chilkat.CkDateTime dt = new Chilkat.CkDateTime();
dt.SetFromCurrentSystemTime();
string created = dt.GetAsTimestamp(false);
bd.AppendString(created,"utf-8");

//  This example wishes to calculate a password digest like this:
//  Password_Digest = Base64 ( SHA-1 ( nonce + created + SHA-1(password) ) )

//  First SHA-1 digest the password...
string passwordSha1 = crypt.HashStringENC(password);
//  Append the 20 binary bytes of the SHA1 hash to bd, which already contains the nonce and created date/time.
bd.AppendEncoded(passwordSha1,"base64");

string passwordDigest = crypt.HashBdENC(bd);

Debug.WriteLine("Base64 password digest = " + passwordDigest);