Category: Cybersecurity

Secure Aggregation

Secure aggregation is a technique that allows multiple parties to combine their data so that only the final result is revealed, and individual contributions remain private. This is especially useful when sensitive information needs to be analysed collectively without exposing any single person’s data. It is often used in distributed computing and privacy-preserving machine learning…

Oblivious Transfer

Oblivious Transfer is a cryptographic method that allows a sender to transfer one of potentially many pieces of information to a receiver, but remains unaware of which piece was chosen. At the same time, the receiver only learns the piece they select and nothing about the others. This technique is important for privacy-preserving protocols where…

Identity-Based Encryption

Identity-Based Encryption (IBE) is a method of encrypting messages so that a person’s public key can be derived from their unique identity, such as their email address. This removes the need for a traditional public key infrastructure where users must generate and exchange certificates. Instead, a trusted authority uses the identity information to create the…

Attribute-Based Encryption

Attribute-Based Encryption (ABE) is a way of encrypting data where access is controlled by the characteristics, or attributes, of the user rather than their identity. Instead of giving someone a key directly, the system checks whether the person trying to access the information has the right set of attributes, such as their role or department….

Functional Encryption

Functional encryption is a method of encrypting data so that only specific functions or computations can be performed on the data without revealing the entire underlying information. Instead of simply decrypting all the data, users receive a special key that allows them to learn only the result of a chosen function applied to the encrypted…

Secure Multi-Party Computation

Secure Multi-Party Computation is a set of methods that allow multiple parties to jointly compute a result using their private data, without revealing their individual inputs to each other. The goal is to ensure that no one learns more than what can be inferred from the final output. These techniques are used to protect sensitive…

Secure API Gateway

A Secure API Gateway is a tool or service that acts as a checkpoint between users and backend services, filtering and managing all requests to APIs. It helps protect sensitive data by enforcing security policies, authentication, and rate limiting, ensuring only authorised users can access certain resources. Secure API Gateways also provide monitoring and logging…

Application Layer Filtering

Application layer filtering is a security technique used to examine and control network traffic based on the specific applications or services being accessed. Unlike basic firewalls that only look at addresses and ports, application layer filters can inspect the actual content of messages, such as HTTP requests or email contents. This allows for more precise…