This project introduces a decryption tool that uses a multi-class SVM classification model to decrypt ciphertexts, encrypted with some randomly generated mixed-ciphertext alphabet. I would like to ...

Abstract: Ciphertext-Policy Attribute-Based Encryption (CP-ABE) allows data to be encrypted under an access policy, which is specified as a logical combination of attributes. However, CP-ABE schemes ...

I have been trying to apply a refresh/bootstrap operation on a ciphertext after a MulRelin operation using CKKS. Decrypting the resulting ciphertext returns completely incorrect values. E.g.

Abstract: In a ciphertext-policy attribute-based encryption (CP-ABE) system, decryption keys are defined over attributes shared by multiple users. Given a decryption key, it may not be always possible ...

Chosen-ciphertext attacks (CCAs) are among the most powerful and dangerous types of cryptographic attacks. In a CCA, an adversary is able to submit selected ciphertexts for decryption and analyze the ...

With the rapid development of IoT technology, the amount of data generated by IoT devices is exploding, often containing a large amount of sensitive information, such as personal privacy, trade ...

🔐 Understanding Encryption in the Most Simple Way Before diving into cryptography terms, let’s start with a basic idea. Imagine you have a message, anything from a simple “hello” to a photo, a credit ...