public static void TagMustBeCorrect_Custom(PublicEncodingRules ruleSet)
{
byte[] inputData = { 0x87, 2, 0, 0x80 };
AsnReader reader = new AsnReader(inputData, (AsnEncodingRules)ruleSet);
AssertExtensions.Throws <ArgumentException>(
"expectedTag",
() => reader.ReadEnumeratedValue <ShortBacked>(Asn1Tag.Null));
Assert.True(reader.HasData, "HasData after bad universal tag");
Assert.Throws <CryptographicException>(() => reader.ReadEnumeratedValue <ShortBacked>());
Assert.True(reader.HasData, "HasData after default tag");
Assert.Throws <CryptographicException>(
() => reader.ReadEnumeratedValue <ShortBacked>(new Asn1Tag(TagClass.Application, 0)));
Assert.True(reader.HasData, "HasData after wrong custom class");
Assert.Throws <CryptographicException>(
() => reader.ReadEnumeratedValue <ShortBacked>(new Asn1Tag(TagClass.ContextSpecific, 1)));
Assert.True(reader.HasData, "HasData after wrong custom tag value");
ShortBacked value = reader.ReadEnumeratedValue <ShortBacked>(new Asn1Tag(TagClass.ContextSpecific, 7));
Assert.Equal((ShortBacked)0x80, value);
Assert.False(reader.HasData, "HasData after reading value");
}
public static void GetExpectedValue_ShortBacked(
PublicEncodingRules ruleSet,
ShortBacked expectedValue,
string inputHex)
{
GetExpectedValue(ruleSet, expectedValue, inputHex);
}
public static void ExpectedTag_IgnoresConstructed(
AsnEncodingRules ruleSet,
string inputHex,
TagClass tagClass,
int tagValue)
{
Asn1Tag primitiveTag = new Asn1Tag(tagClass, tagValue, false);
Asn1Tag constructedTag = new Asn1Tag(tagClass, tagValue, true);
byte[] inputData = inputHex.HexToByteArray();
AsnReader reader = new AsnReader(inputData, ruleSet);
ShortBacked val1 = reader.ReadEnumeratedValue <ShortBacked>(constructedTag);
Assert.False(reader.HasData);
reader = new AsnReader(inputData, ruleSet);
ShortBacked val2 = reader.ReadEnumeratedValue <ShortBacked>(primitiveTag);
Assert.False(reader.HasData);
Assert.Equal(val1, val2);
reader = new AsnReader(inputData, ruleSet);
ShortBacked val3 = (ShortBacked)reader.ReadEnumeratedValue(typeof(ShortBacked), constructedTag);
Assert.False(reader.HasData);
Assert.Equal(val1, val3);
reader = new AsnReader(inputData, ruleSet);
ShortBacked val4 = (ShortBacked)reader.ReadEnumeratedValue(typeof(ShortBacked), primitiveTag);
Assert.False(reader.HasData);
Assert.Equal(val1, val4);
reader = new AsnReader(inputData, ruleSet);
ReadOnlyMemory <byte> bytes1 = reader.ReadEnumeratedBytes(constructedTag);
Assert.False(reader.HasData);
reader = new AsnReader(inputData, ruleSet);
ReadOnlyMemory <byte> bytes2 = reader.ReadEnumeratedBytes(primitiveTag);
Assert.False(reader.HasData);
Assert.Equal(bytes1.ByteArrayToHex(), bytes2.ByteArrayToHex());
Assert.Equal("FF", bytes1.ByteArrayToHex());
}
public static void ExpectedTag_IgnoresConstructed(
PublicEncodingRules ruleSet,
string inputHex,
PublicTagClass tagClass,
int tagValue)
{
byte[] inputData = inputHex.HexToByteArray();
AsnReader reader = new AsnReader(inputData, (AsnEncodingRules)ruleSet);
ShortBacked val1 = reader.ReadEnumeratedValue <ShortBacked>(new Asn1Tag((TagClass)tagClass, tagValue, true));
Assert.False(reader.HasData);
reader = new AsnReader(inputData, (AsnEncodingRules)ruleSet);
ShortBacked val2 = reader.ReadEnumeratedValue <ShortBacked>(new Asn1Tag((TagClass)tagClass, tagValue, false));
Assert.False(reader.HasData);
Assert.Equal(val1, val2);
}
public static void TagMustBeCorrect_Universal(PublicEncodingRules ruleSet)
{
byte[] inputData = { 0x0A, 1, 0x7E };
AsnReader reader = new AsnReader(inputData, (AsnEncodingRules)ruleSet);
AssertExtensions.Throws <ArgumentException>(
"expectedTag",
() => reader.ReadEnumeratedValue <ShortBacked>(Asn1Tag.Null));
Assert.True(reader.HasData, "HasData after bad universal tag");
Assert.Throws <CryptographicException>(
() => reader.ReadEnumeratedValue <ShortBacked>(new Asn1Tag(TagClass.ContextSpecific, 0)));
Assert.True(reader.HasData, "HasData after wrong tag");
ShortBacked value = reader.ReadEnumeratedValue <ShortBacked>();
Assert.Equal((ShortBacked)0x7E, value);
Assert.False(reader.HasData, "HasData after read");
}