public void Generates_Same_Hash_For_Same_Inputs()
{
// Arrange
var key = Rnd.ByteF.Get(8);
var counter = Rnd.ByteF.Get(8);
// Act
var r0 = TotpF.ComputeHash(key, counter);
var r1 = TotpF.ComputeHash(key, counter);
// Assert
Assert.Equal(r0, r1);
}
public void Generates_Different_Hash_For_Different_Counters()
{
// Arrange
var key = Rnd.ByteF.Get(8);
var c0 = Rnd.ByteF.Get(8);
var c1 = Rnd.ByteF.Get(8);
// Act
var r0 = TotpF.ComputeHash(key, c0);
var r1 = TotpF.ComputeHash(key, c1);
// Assert
Assert.NotEqual(r0, r1);
}
public void Generates_Different_Hash_For_Different_Keys()
{
// Arrange
var k0 = Rnd.ByteF.Get(8);
var k1 = Rnd.ByteF.Get(8);
var counter = Rnd.ByteF.Get(8);
// Act
var r0 = TotpF.ComputeHash(k0, counter);
var r1 = TotpF.ComputeHash(k1, counter);
// Assert
Assert.NotEqual(r0, r1);
}
public void Generates_256bit_Hash()
{
// Arrange
var key = Rnd.ByteF.Get(8);
var counter = Rnd.ByteF.Get(8);
var expected = new HMACSHA256(key).ComputeHash(counter);
// Act
var result = TotpF.ComputeHash(key, counter);
// Assert
Assert.Equal(expected, result);
Assert.Equal(32, result.Length);
}