+ Homomorphic Encryption (HE)

Homomorphic Encryption (HE) is a cryptographic technique that enables computation on encrypted data without decrypting it first. In other words, it allows data to remain encrypted while still being processed, offering a unique and powerful solution for privacy- preserving computations. With homomorphic encryption, data can be sent to a third party for processing, and the results can be returned in an encrypted form, maintaining the confidentiality of the original data.

There are various types of homomorphic encryption schemes, including partially homomorphic encryption and fully homomorphic encryption. Partially homomorphic encryption supports either addition or multiplication operations on encrypted data, while fully homomorphic encryption supports both operations, allowing for a broader range of computations.

Homomorphic encryption is particularly relevant in scenarios where privacy is paramount, such as secure cloud computing, data outsourcing, and collaborative data analysis. It allows organizations to harness the computational power of external servers or services without exposing sensitive information, contributing to advancements in secure and privacy- preserving technologies.