Understanding FHE Systems
In the era of big data and AI, we protect our daily lives from data leakage.
What is Homomorphic Encryption?
How Homomorphic Encryption Works:
How homomorphic encryption enables analysis of encrypted information.
The value of the sum of the plaintext operation (step 1) and the value of the decrypted sum of the encrypted operation (step 3) are the same.
A value is obtained by adding a multiple of the secret key to the original information of the encrypted text. Therefore, if you know the secret key, which is 12345 in this illustration, you can compute the original information by subtracting the multiple of the secret key 12345 from the ciphertext.
Homomorphic encryption is a technology that enables processing data using standard operations, such as addition and multiplication, in an encrypted state. There is no risk of data leakage. Homomorphic encryption is the most effective means of data-in-use protection.
With the increased speed, range, and accuracy of computation, in 2016 CryptoLab developed the CKKS algorithm that can perform real number operations, launching the fourth generation of homomorphic encryption.
Homomorphic encryption is advancing the era of Private AI by enabling learning & inference as well as data combined learning while protecting privacy.
Why is Homomorphic Encryption Important?
With the advent of the era of big data and AI, the demand for personal information analysis has greatly expanded, while data breaches are also on the rise.
This is a fundamental problem with the current encryption and data security systems, and the data-in-use protection is not sufficient. Hacking and data leakage by insiders continues to occur.
Gartner selected homomorphic encryption as one of five key technologies to pay attention to in 2022.
Homomorphic encryption is expected to rapidly increase penetration mainly in the private and public sectors that want to utilize big data without fear of invasion of privacy and loss of information.
Quantum Resistant Cryptography
Quantum computers are predicted to have overwhelming computational speed compared to conventional computers.
However, the rapid development of quantum computers threatens the Public Key Infrastructure (PKI), which is the foundation of current Internet security. PQC (Post Quantum Cryptography), or Quantum Tolerant Cryptography, is a cryptographic algorithm made so that even quantum computers cannot solve it. It refers to the new encryption, key sharing, and digital signature algorithms of PKI.
Cryptolab’s homomorphic encryption, HEaaN, is quantum-resistant.