public void TestHasher()
{
// Using flawed MD5 algorithm FOR TEST PURPOSES ONLY
IIonHasherProvider hasherProvider = new CryptoIonHasherProvider("MD5");
IIonHasher hasher = hasherProvider.NewHasher();
byte[] emptyHasherDigest = hasher.Digest();
hasher.Update(new byte[] { 0x0f });
byte[] digest = hasher.Digest();
byte[] expected =
{
0xd8, 0x38, 0x69, 0x1e, 0x5d, 0x4a, 0xd0, 0x68, 0x79,
0xca, 0x72, 0x14, 0x42, 0xe8, 0x83, 0xd4
};
TestUtil.AssertEquals(expected, digest, "Digest don't match.");
// Verify that the hasher resets after digest.
TestUtil.AssertEquals(emptyHasherDigest, hasher.Digest(), "Digest don't match.");
}
internal void StepIn(IIonHashValue ionValue)
{
IIonHasher hashFunction = this.currentHasher.HashFunction;
if (this.currentHasher is StructSerializer)
{
hashFunction = this.hasherProvider.NewHasher();
}
if (ionValue.CurrentType == IonType.Struct)
{
this.currentHasher = new StructSerializer(hashFunction, this.Depth(), this.hasherProvider);
}
else
{
this.currentHasher = new Serializer(hashFunction, this.Depth());
}
this.hasherStack.Push(this.currentHasher);
this.currentHasher.StepIn(ionValue);
}
internal Serializer(IIonHasher hashFunction, int depth)
{
this.HashFunction = hashFunction;
this.depth = depth;
}
internal StructSerializer(IIonHasher hashFunction, int depth, IIonHasherProvider hashFunctionProvider)
: base(hashFunction, depth)
{
this.scalarSerializer = new Serializer(hashFunctionProvider.NewHasher(), depth + 1);
this.fieldHashes = new List <byte[]>();
}