Data Security in Android
Hello! I hope you’re doing well. In this article, I aim to provide a concise and practical overview of data security in Android. Initially, I’ll give a brief explanation of encryption algorithms, followed by the implementation of each method in Android.
All implementations are available in a single Android project on this GitHub link for your reference. Due to the extensive content, I’ve dedicated a separate article to each implementation, and you can find their links at the end of this article.
Data Encryption Methods:
In any software, data encryption holds special importance, and Android applications are no exception. Considering the diverse tasks performed in Android, various encryption methods can be employed. Generally, encryption methods fall into two categories: reversible (symmetric/asymmetric) and irreversible (hash).
1. Reversible Algorithms
Reversible algorithms, also known as symmetric algorithms, encrypt and decrypt text in a way that the encrypted text can be precisely reversed to the original text using decryption algorithms. For enhanced security in Android, we utilize the AndroidKeyStore to generate keys. These algorithms are further divided into symmetric and asymmetric.
— Symmetric Algorithms:
These algorithms use the same key for both encryption and decryption. In this article, we delve into the implementation of the AES algorithm using AndroidKeyStore.
— Asymmetric Algorithms:
These algorithms use different keys for encryption and decryption. This article covers the implementation of the EC algorithm with AndroidKeyStore.
2. Irreversible Algorithms
Irreversible algorithms, also known as hash functions, encrypt text in a way that it cannot be reversed to the original text. In this article, we discuss the implementation of the SHA algorithm in Android.
Now, let’s move on to the core content and the implementation of the aforementioned methods:
1. Implementation of Symmetric Encryption in Android
