public static EventValidationStore DeserializeFrom(Stream inputStream)
{
// don't need a 'using' block around this reader
DeserializingBinaryReader reader = new DeserializingBinaryReader(inputStream);
byte versionHeader = reader.ReadByte();
if (versionHeader != (byte)0x00)
{
// the only version we support is v0; throw if unsupported
throw new InvalidOperationException(SR.GetString(SR.InvalidSerializedData));
}
EventValidationStore store = new EventValidationStore();
// 'numEntries' is the number of HASH_SIZE_IN_BYTES-sized entries
// we should expect in the stream.
int numEntries = reader.Read7BitEncodedInt();
for (int i = 0; i < numEntries; i++)
{
byte[] entry = reader.ReadBytes(HASH_SIZE_IN_BYTES);
if (entry.Length != HASH_SIZE_IN_BYTES)
{
// bad data (EOF)
throw new InvalidOperationException(SR.GetString(SR.InvalidSerializedData));
}
store._hashes.Add(entry);
}
return(store);
}
// Creates a duplicate store seeded with the same hashes as the current store.
public EventValidationStore Clone()
{
EventValidationStore newStore = new EventValidationStore();
newStore._hashes.UnionWith(this._hashes);
return(newStore);
}