public static string EncodePassword(string password, UserPasswordFormats passwordFormat, string passwordSalt)
{
if (passwordFormat == UserPasswordFormats.Clear)
{
return password;
}
byte[] bytes = Encoding.Unicode.GetBytes(password);
byte[] src = Convert.FromBase64String(passwordSalt);
byte[] dst = new byte[src.Length + bytes.Length];
Buffer.BlockCopy(src, 0, dst, 0, src.Length);
Buffer.BlockCopy(bytes, 0, dst, src.Length, bytes.Length);
switch (passwordFormat)
{
case UserPasswordFormats.HashedFromMembership:
return Convert.ToBase64String(HashAlgorithm.Create(Membership.HashAlgorithmType).ComputeHash(dst));
case UserPasswordFormats.EncryptedFromMembership:
MembershipProvider provider = Membership.Provider;
MethodInfo method = typeof(MembershipProvider).GetMethod("EncodePassword", BindingFlags.FlattenHierarchy | BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance);
if (method == null)
{
return null;
}
return (method.Invoke(provider, new object[] { password, MembershipPasswordFormat.Encrypted, passwordSalt }) as string);
case UserPasswordFormats.EncryptedFromSpaceBuilder:
return EncryptManager.EncryptTokenForPassword(password);
case UserPasswordFormats.MD5:
return EncryptManager.MD5(password);
}
return null;
}
public static bool CheckPassword(string password, string storedPassword, UserPasswordFormats passwordFormat, string passwordSalt)
{
string str = EncodePassword(password, passwordFormat, passwordSalt);
return ((str != null) && str.Equals(storedPassword, StringComparison.CurrentCultureIgnoreCase));
}
