Top 20 NuGet encryption Packages

A string encryption and data integrity library for Entity Framework
Object / Document peer to peer database for the .NET framework.
Tool for hashing and salting strings (passwords), you can specify the salt size before encrypting
Library of interfaces used by the EncryptedType transparent field and property encryption.
Simple cryptography wrapper for .NET
This library will wrap an instance of DataContractSerializer to enable you to apply encrpytion to the serialization process.
A library that implements various encryption and hashing functions.
A C# implementation of the AESCrypt library
A simple encryption provider for WinRT apps. Supports Windows Phone and Windows 8/8.1 apps. Can be used with SQLite.
App configuration for .NET. Strong-typed, JSON file-based, host-independent, and manageable.
Helper methods for creating encryption functionality with RSA and Rijndael.
CryptoService provides one-way hash and two-way encryption and decryption services
EncType provides a collection of value types whose data are safely encrypted.It prevents your sensitive in-memory data being inspected and modified by memoryediting tools.
Assembly to cipher and decipher
EnvCrypt Core library
A great library for encrypting things weakly. Good for when you don't want something to be human-readable. Bad when you want it to be secure in any real way. Caveat nerd! No .NET Core support yet because RijndaelManaged isn't ported yet.
Symmetric file encryption/decryption library
Small library for password encryption using salting and hashing as well as other nifty crypto functionalities
A library of methods to assist with encryption
Configuration manager powered by Windows Data Protection API.