ModernKeePassLib is a port of KeePassLib to .netstandard 1.2, distributed as a nuget package. The aim was to change as little as possible the original library. However, some workarounds have to be made as .netstandard 1.2 misses quite a few features of the full .net framework. Main changes:

• Removed the dependency on the filesystem
• Added a dependency on Windows (I'm working on tring to find a way to remove it altogether)
• Some features are handled by external nuget packages (cryptography, colors, etc.), so it may introduce small differences

From nuget.org

1. Create a IOConnectionInfo from a byte array: var ioConnection = IOConnectionInfo.FromByteArray(file);
2. Create a composite key and add credential information: var compositeKey = new CompositeKey(); // Password compositeKey.AddUserKey(new KcpPassword("Password")); // Key file compositeKey.AddUserKey(new KcpKeyFile(IOConnectionInfo.FromByteArray(KeyFileContents)));`
3. Use it to open the database: // You may use whatever logger you choose (here, I use nullstatuslogger) PwDatabase.Open(ioConnection, compositeKey, new NullStatusLogger());
4. Do stuff in you database (create entries, groups, ...)
5. Save your changes: PwDatabase.Save(new NullStatusLogger());
6. At this point, nothing is commited to disk, so you need to retrieve the byte array: var contents = PwDatabase.IOConnectionInfo.Bytes;
7. Write the byte array to a file, to a stream, whatever !

• Remove Windows dependencies entirely
• Find a way to use Color class (handled by Splat at the moment, but I'm not satisfied)