public void RoundTrip_ProtectedData()
{
// Arrange
var ephemeralProtector = new EphemeralDataProtectionProvider().CreateProtector("my purpose");
var timeLimitedProtector = new TimeLimitedDataProtector(ephemeralProtector);
var expectedExpiration = StringToDateTime("2020-01-01 00:00:00Z");
// Act
byte[] ephemeralProtectedPayload = ephemeralProtector.Protect(new byte[] { 0x01, 0x02, 0x03, 0x04 });
byte[] timeLimitedProtectedPayload = timeLimitedProtector.Protect(new byte[] { 0x11, 0x22, 0x33, 0x44 }, expectedExpiration);
// Assert
DateTimeOffset actualExpiration;
Assert.Equal(new byte[] { 0x11, 0x22, 0x33, 0x44 }, timeLimitedProtector.UnprotectCore(timeLimitedProtectedPayload, StringToDateTime("2010-01-01 00:00:00Z"), out actualExpiration));
Assert.Equal(expectedExpiration, actualExpiration);
// the two providers shouldn't be able to talk to one another (due to the purpose chaining)
Assert.Throws <CryptographicException>(() => ephemeralProtector.Unprotect(timeLimitedProtectedPayload));
Assert.Throws <CryptographicException>(() => timeLimitedProtector.Unprotect(ephemeralProtectedPayload, out actualExpiration));
}
public void Unprotect_WithinPayloadValidityPeriod_Success()
{
// Arrange
// 0x08c1220247e44000 is the representation of midnight 2000-01-01 UTC.
DateTimeOffset expectedExpiration = StringToDateTime("2000-01-01 00:00:00Z");
DateTimeOffset now = StringToDateTime("1999-01-01 00:00:00Z");
var mockInnerProtector = new Mock<IDataProtector>();
mockInnerProtector.Setup(o => o.CreateProtector(TimeLimitedPurposeString).Unprotect(new byte[] { 0x10, 0x11 })).Returns(
new byte[] {
0x08, 0xc1, 0x22, 0x02, 0x47, 0xe4, 0x40, 0x00, /* header */
0x01, 0x02, 0x03, 0x04, 0x05 /* payload */
});
var timeLimitedProtector = new TimeLimitedDataProtector(mockInnerProtector.Object);
// Act
DateTimeOffset actualExpiration;
var retVal = timeLimitedProtector.UnprotectCore(new byte[] { 0x10, 0x11 }, now, out actualExpiration);
// Assert
Assert.Equal(expectedExpiration, actualExpiration);
Assert.Equal(new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05 }, retVal);
}
public void Unprotect_PayloadHasExpired_Fails()
{
// Arrange
// 0x08c1220247e44000 is the representation of midnight 2000-01-01 UTC.
DateTimeOffset expectedExpiration = StringToDateTime("2000-01-01 00:00:00Z");
DateTimeOffset now = StringToDateTime("2001-01-01 00:00:00Z");
var mockInnerProtector = new Mock <IDataProtector>();
mockInnerProtector.Setup(o => o.CreateProtector(TimeLimitedPurposeString).Unprotect(new byte[] { 0x10, 0x11 })).Returns(
new byte[] {
0x08, 0xc1, 0x22, 0x02, 0x47, 0xe4, 0x40, 0x00, /* header */
0x01, 0x02, 0x03, 0x04, 0x05 /* payload */
});
var timeLimitedProtector = new TimeLimitedDataProtector(mockInnerProtector.Object);
// Act & assert
DateTimeOffset unused;
var ex = Assert.Throws <CryptographicException>(() => timeLimitedProtector.UnprotectCore(new byte[] { 0x10, 0x11 }, now, out unused));
// Assert
Assert.Equal(Resources.FormatTimeLimitedDataProtector_PayloadExpired(expectedExpiration), ex.Message);
}
public void Unprotect_WithinPayloadValidityPeriod_Success()
{
// Arrange
// 0x08c1220247e44000 is the representation of midnight 2000-01-01 UTC.
DateTimeOffset expectedExpiration = StringToDateTime("2000-01-01 00:00:00Z");
DateTimeOffset now = StringToDateTime("1999-01-01 00:00:00Z");
var mockInnerProtector = new Mock <IDataProtector>();
mockInnerProtector.Setup(o => o.CreateProtector(TimeLimitedPurposeString).Unprotect(new byte[] { 0x10, 0x11 })).Returns(
new byte[] {
0x08, 0xc1, 0x22, 0x02, 0x47, 0xe4, 0x40, 0x00, /* header */
0x01, 0x02, 0x03, 0x04, 0x05 /* payload */
});
var timeLimitedProtector = new TimeLimitedDataProtector(mockInnerProtector.Object);
// Act
DateTimeOffset actualExpiration;
var retVal = timeLimitedProtector.UnprotectCore(new byte[] { 0x10, 0x11 }, now, out actualExpiration);
// Assert
Assert.Equal(expectedExpiration, actualExpiration);
Assert.Equal(new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05 }, retVal);
}
public void Unprotect_PayloadHasExpired_Fails()
{
// Arrange
// 0x08c1220247e44000 is the representation of midnight 2000-01-01 UTC.
DateTimeOffset expectedExpiration = StringToDateTime("2000-01-01 00:00:00Z");
DateTimeOffset now = StringToDateTime("2001-01-01 00:00:00Z");
var mockInnerProtector = new Mock<IDataProtector>();
mockInnerProtector.Setup(o => o.CreateProtector(TimeLimitedPurposeString).Unprotect(new byte[] { 0x10, 0x11 })).Returns(
new byte[] {
0x08, 0xc1, 0x22, 0x02, 0x47, 0xe4, 0x40, 0x00, /* header */
0x01, 0x02, 0x03, 0x04, 0x05 /* payload */
});
var timeLimitedProtector = new TimeLimitedDataProtector(mockInnerProtector.Object);
// Act & assert
DateTimeOffset unused;
var ex = Assert.Throws<CryptographicException>(() => timeLimitedProtector.UnprotectCore(new byte[] { 0x10, 0x11 }, now, out unused));
// Assert
Assert.Equal(Resources.FormatTimeLimitedDataProtector_PayloadExpired(expectedExpiration), ex.Message);
}
public void RoundTrip_ProtectedData()
{
// Arrange
var ephemeralProtector = new EphemeralDataProtectionProvider().CreateProtector("my purpose");
var timeLimitedProtector = new TimeLimitedDataProtector(ephemeralProtector);
var expectedExpiration = StringToDateTime("2020-01-01 00:00:00Z");
// Act
byte[] ephemeralProtectedPayload = ephemeralProtector.Protect(new byte[] { 0x01, 0x02, 0x03, 0x04 });
byte[] timeLimitedProtectedPayload = timeLimitedProtector.Protect(new byte[] { 0x11, 0x22, 0x33, 0x44 }, expectedExpiration);
// Assert
DateTimeOffset actualExpiration;
Assert.Equal(new byte[] { 0x11, 0x22, 0x33, 0x44 }, timeLimitedProtector.UnprotectCore(timeLimitedProtectedPayload, StringToDateTime("2010-01-01 00:00:00Z"), out actualExpiration));
Assert.Equal(expectedExpiration, actualExpiration);
// the two providers shouldn't be able to talk to one another (due to the purpose chaining)
Assert.Throws<CryptographicException>(() => ephemeralProtector.Unprotect(timeLimitedProtectedPayload));
Assert.Throws<CryptographicException>(() => timeLimitedProtector.Unprotect(ephemeralProtectedPayload, out actualExpiration));
}