public void Pbkdf2PasswordHasherFailsToRoundTripWhenSaltsDontMatch()
{
var hashsize = 32;
var saltsize = hashsize * 2;
var generator = new CsprngSaltGenerator();
var salt1 = generator.Generate(saltsize);
salt1.Length.ShouldEqual(saltsize);
byte[] salt2;
do
{
salt2 = generator.Generate(saltsize);
} while (salt2.SequenceEqual(salt1));
var hasher = new Pbkdf2PasswordHasher(hashsize);
var hashed = hasher.Hash(salt1, Password);
hashed.Length.ShouldEqual(hashsize);
hasher.Compare(salt2, Password, hashed).ShouldBeFalse();
}
public void CsprngSaltGeneratorCreatesSaltOfLengthEqualToGivenLength()
{
var expected = 64;
var salt = new CsprngSaltGenerator().Generate(expected);
salt.Length.ShouldEqual(expected);
}
public void Pbkdf2PasswordHasherFailsToRoundTripWhenPasswordsDontMatch()
{
var hashsize = 32;
var saltsize = hashsize * 2;
var salt = new CsprngSaltGenerator().Generate(saltsize);
salt.Length.ShouldEqual(saltsize);
var hasher = new Pbkdf2PasswordHasher(hashsize);
var hashed = hasher.Hash(salt, Password);
hashed.Length.ShouldEqual(hashsize);
hasher.Compare(salt, "Goodbye, World!", hashed).ShouldBeFalse();
}
public void Pbkdf2PasswordHasherCanRoundTrip()
{
var hashsize = 32;
var saltsize = hashsize * 2;
var salt = new CsprngSaltGenerator().Generate(saltsize);
salt.Length.ShouldEqual(saltsize);
var hasher = new Pbkdf2PasswordHasher(hashsize);
var hashed = hasher.Hash(salt, Password);
hashed.Length.ShouldEqual(hashsize);
hasher.Compare(salt, Password, hashed).ShouldBeTrue();
}
