public void constructor_with_string_should_initialize_instance(
[Values("", "a", "ab", "abc")] string value)
{
var result = new PasswordEvidence(value);
var decryptedPassword = new DecryptedSecureString(result.SecurePassword);
decryptedPassword.GetChars().Should().Equal(value);
}
public void SecurePassword_should_return_expected_result(
[Values("", "a", "ab", "abc")] string value)
{
var subject = CreateSubject(value);
var result = subject.SecurePassword;
var decryptedPassword = new DecryptedSecureString(result);
decryptedPassword.GetChars().Should().Equal(value);
}
private static string GetSignature(string stringToSign, SecureString secretAccessKey, string date, string region, string service)
{
using (var decryptedSecureString = new DecryptedSecureString(secretAccessKey))
{
var aws4SecretAccessKeyChars = "AWS4".Concat(decryptedSecureString.GetChars()).ToArray();
var aws4SecretAccessKeyBytes = Encoding.ASCII.GetBytes(aws4SecretAccessKeyChars);
var kDateBlock = Hmac256(aws4SecretAccessKeyBytes, Encoding.ASCII.GetBytes(date));
Array.Clear(aws4SecretAccessKeyChars, 0, aws4SecretAccessKeyChars.Length);
Array.Clear(aws4SecretAccessKeyBytes, 0, aws4SecretAccessKeyBytes.Length);
var kRegionBlock = Hmac256(kDateBlock, Encoding.ASCII.GetBytes(region));
var kServiceBlock = Hmac256(kRegionBlock, Encoding.ASCII.GetBytes(service));
var kSigningBlock = Hmac256(kServiceBlock, Encoding.ASCII.GetBytes("aws4_request"));
return(BsonUtils.ToHexString(Hmac256(kSigningBlock, Encoding.ASCII.GetBytes(stringToSign))));
}
}
// private methods
private bool Equals(SecureString x, SecureString y)
{
if (object.ReferenceEquals(x, y))
{
return(true);
}
if (object.ReferenceEquals(x, null) || object.ReferenceEquals(y, null))
{
return(false);
}
using (var dx = new DecryptedSecureString(x))
using (var dy = new DecryptedSecureString(y))
{
var xchars = dx.GetChars();
var ychars = dy.GetChars();
return(Equals(xchars, ychars));
}
}