public bool ValidatePasswordEncryptedWithSalt(byte[] clearSalt, byte[] sessionKey, _SAMPR_ENCRYPTED_USER_PASSWORD_NEW target)
{
_SAMPR_ENCRYPTED_USER_PASSWORD_NEW expected = GetPasswordEncryptedWithSalt(clearSalt, sessionKey);
bool isSame = ObjectUtility.DeepCompare(expected, target);
return isSame;
}
public _SAMPR_ENCRYPTED_USER_PASSWORD_NEW GetPasswordEncryptedWithSalt(byte[] clearSalt, byte[] sessionKey)
{
if (clearSalt == null)
{
// Will be changed to StackSdkException after StackSdkxception class is updated
throw new ArgumentNullException("clearSalt");
}
if (sessionKey == null)
{
throw new ArgumentNullException("sessionKey");
}
byte[] digestData = MergeBlocks(clearSalt, sessionKey);
// Compute digest for clearSalt and sessionKey, this digest is the key for RC4 encryption
MD5 md5 = MD5.Create();
byte[] digest = md5.ComputeHash(digestData);
_SAMPR_ENCRYPTED_USER_PASSWORD_NEW encryptedPwd = new _SAMPR_ENCRYPTED_USER_PASSWORD_NEW();
encryptedPwd.Buffer = new byte[encryptedPwdSize + pwdLenSize + pwdEncryptionKeySize];
// Copy password bytes to the tail of the encryptedPwdSize bytes of buffer
byte[] existingPwdBuffer = Encoding.Unicode.GetBytes(existingPwd);
Array.Copy(existingPwdBuffer, 0, encryptedPwd.Buffer,
encryptedPwdSize - existingPwdBuffer.Length, existingPwdBuffer.Length);
// Set password length for the last pwdLenSize bytes of (the encryptedPwdSize + pwdLenSize) bytes
byte[] lengthBuffer = BitConverter.GetBytes(existingPwdBuffer.Length);
Array.Copy(lengthBuffer, 0, encryptedPwd.Buffer, encryptedPwdSize, lengthBuffer.Length);
// Copy clear salt to the last pwdEncryptionKeySize bytes of the buffer
Array.Copy(clearSalt, 0, encryptedPwd.Buffer, encryptedPwdSize + pwdLenSize, clearSalt.Length);
// Do RC4 encryption, the last pwdEncryptionKeySize bytes are intact
byte[] rc4Result = RC4Encrypt(encryptedPwd.Buffer, 0,
encryptedPwd.Buffer.Length - pwdEncryptionKeySize, digest);
Array.Copy(rc4Result, encryptedPwd.Buffer, rc4Result.Length);
return encryptedPwd;
}
