What is an Asymmetric Key?

Post Quantum Cryptography

What is the quantum risk and its impact on data security?What are the implications of data sensitivity vs time?When will quantum computing pose a threat to encryption methods?Which protocols and certificates may become vulnerable in the post-quantum era?How can enterprises prepare data security strategies for the post-quantum era?Do current cloud platforms support post-quantum algorithms?What is the concept of cryptographic agility?How does cryptographic agility impact risk management for enterprises?Why is data classification important in the context of post-quantum readiness?How does crypto agility affect disaster recovery planning and insurance costs?What is the technical impact of post-quantum agility on organizations?How does Fortanix DSM help achieve cryptographic agility?What features does Fortanix DSM offer for key lifecycle management in PQC implementation?How does Fortanix DSM facilitate integration with leading applications in PQC implementation?

What is an Asymmetric Key?

Asymmetric encryption uses a pair of keys. Each pair consists of a public and private key. The sender uses the receiver’s public key for encryption, and the receiver uses its private key for decryption.

The public keys can be accessed by anyone for encryption. however, a private key is kept secret and was issued, and is managed by an authorized entity.

Asymmetric keys are used to authenticate users, verify data integrity, and secure symmetric encryption.

For example, the HTTPS padlock symbol on a website URL indicates the website uses SSL/TLS certificates. It means when a user connects to a website, SSL/TLS encrypts communications between a user and a website server.

It uses asymmetric key encryption to verify the identity of the server so that the user can then communicate with the website using the symmetric exchange of keys.

The asymmetric encryption process becomes slow because it utilizes more resources, and the key length is 2048 or higher. As a result, it is used to transfer small amounts of data.

Some examples of asymmetric encryption algorithms include Diffie-Hellman, An Elliptic Curve Cryptography (ECC), El Gamal, Digital Signature Algorithm (DSA), and Rivest-Shamir-Adleman (RSA).

Learn more about:

Runtime Encryption Platform

Transparent Encryption Solution

Database Encryption Solution