Uses of Cryptography

Cryptography plays a significant role in everyday life, providing security and privacy for various activities and communications.

Activity Time

Use these tools to help you encrypt, decrypt, and crack messages. You can type in your own messages and experiment.

Try it!


Cryptography secures data on smartphones, including fingerprint recognition, facial recognition, and encryption of stored files

Cryptography is used to secure online banking, financial transactions, and electronic payments, ensuring that sensitive information like credit card numbers and passwords remains confidential during transmission

Messaging apps, emails, and social media platforms use cryptography to protect messages and data from unauthorized access, allowing individuals to communicate privately and securely

Cryptographic techniques are used to securely store passwords, making it challenging for attackers to retrieve them in case of a breach

Modern computers use sophisticated encryption methods and standards to ensure data security, including algorithms like AES (Advanced Encryption Standard) and encryption protocols such as SSL/TLS for securing data during transmission over the internet


The world of technology is vast and many ‘advanced technologies’ are making their way into our lives faster than we imagined. Young Techie Series (YTS) is a set of books about everyday technology for children and young adults.
Book 1 in the Young Techie Series - The Little Handbook of Cool Technology is available here.
Book 2 in the Young Techie Series - Robotics and Other Super Cool Technology is available here.