C#

PBKDF2 Key Derivation

Demonstrates AES secret key derivation from a password using PBDKF2. C#

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

Chilkat.Crypt2 crypt = new Chilkat.Crypt2();

string password = "correcthorsebatterystaple";

// Derive from the utf-8 byte representation of the password.
string charset = "utf-8";

string hashAlg = "sha256";

crypt.EncodingMode = "hex";
string saltHex = crypt.GenRandomBytesENC(16);

int iterationCount = 310000;

// Derive a 256-bit key from the password.
int outputBitLen = 256;

// The derived key is returned as a hex or base64 encoded string.
// (Note: The salt argument must be a string that also uses
// the same encoding.)
string enc = "hex";

string hexKey = crypt.Pbkdf2(password,charset,hashAlg,saltHex,iterationCount,outputBitLen,enc);

Debug.WriteLine(hexKey);

// Sample output:
// 597734C894FF89CFD3B93D925462C24E97724BCB118F6FC919007F5ABC27E768