What is Identity-Based Encryption (IBE)?

by Amrita Mitra | Mar 9, 2017 | CCNP, CompTIA, Data Breaches and Prevention, Data Security, Email Security, Encryption, End Point Protection, Exclusive Articles

What is Identity-Based Encryption (IBE)?

In the case of public-key encryption, every user gets his own public-private keypair using which anyone can start encrypted communication with the user. But, there is a problem. Public-key encryption mostly depends on public key distribution infrastructure. Every user gets his keypair from a trusted Certificate Authority (CA). Anyone who wants to start an encrypted communication has to obtain the public key certificate from the user and verify it with the Certificate Authority before the encrypted communication starts. This process is time-consuming, error-prone, and causes much inconvenience at times. Identity-Based Encryption, or IBE, is an encryption technology that is developed to reduce these barriers up to a great extent and yet provide secure communications. Moreover, the user can expire his keys very easily and regenerate new ones periodically.

Identity-Based Encryption, or IBE, is a type of public-key encryption in which a user’s public key is some unique information based on his identity, such as his email address. Anyone who wants to send an encrypted message to the user can encrypt it with the text value of the identity-based public key, such as the text value of an email address, and send it. The user can decrypt the message using the private key associated with the identity-based public key.

How does this Identity-Based Encryption work? In this article, we will discuss that in detail.

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