Enrollment over Secure Transport (EoST) is a protocol designed to facilitate secure enrollment of devices in a network, specifically in scenarios involving device management or provisioning. It enhances security during the enrollment process by ensuring that sensitive information is transmitted securely over the network. EoST typically utilizes Transport Layer Security (TLS) to provide a secure communication channel, protecting against eavesdropping and tampering.

Firefly is a key exchange protocol designed to securely establish shared keys between parties over a potentially insecure communication channel. It's part of a broader category of cryptographic protocols known as key exchange protocols, which allow two or more parties to generate a shared secret that can be used for encryption or authentication, without the need to exchange the secret itself directly. One of the notable features of Firefly is its emphasis on efficiency and computational security, especially in environments with limited resources or specific requirements for speed and bandwidth.

Hashcash is a proof-of-work system designed to limit email spam and denial-of-service attacks. It was created by Adam Back in 1997. The idea behind Hashcash is to require the sender of an email to perform a computational task, which involves calculating a hash that meets certain criteria. This process takes time and computational resources, making it more expensive for spammers to send large volumes of emails.

A list of Tor onion services refers to a compilation of websites or services that are accessible through the Tor network using ".onion" addresses. These addresses are only reachable through the Tor browser, which allows users to browse the internet anonymously. Onion services can host a variety of content, including: 1. **Forums and Communities**: Many forums exist for discussions on various topics including privacy, technology, and specific interests.

A multi-party fair exchange protocol is a cryptographic mechanism that enables multiple parties to exchange digital assets (such as digital signatures, documents, or cryptocurrencies) in a manner that ensures fairness and security. The key objectives of such a protocol include: 1. **Fairness**: No party should end up with the exchanged assets while the other parties do not. This means that the protocol ensures that either all parties receive their respective assets or none do.

Off-the-Record (OTR) Messaging is a protocol that provides private and secure communication over instant messaging. It offers encryption and allows users to have conversations that are not only confidential but also unavailable for decryption later. Here are some key features of OTR Messaging: 1. **Encryption**: OTR uses strong cryptographic methods to ensure that messages are encrypted during transmission, making it difficult for unauthorized parties to eavesdrop on the conversation.

The term "Offline Private Key Protocol" generally refers to a mechanism used in cryptography and secure communications where a private key is generated and/or managed in a manner that isolates it from online threats, such as hacking and malware. The protocol aims to enhance security by ensuring that private keys are not exposed to potentially compromised online environments.

"Signature Record Type Definition" typically refers to a specification in various contexts that defines how digital signatures or signatures associated with certain records/data should be structured, validated, and used. This is particularly relevant in fields like blockchain technology, digital documents, and electronic transactions where signatures verify the authenticity and integrity of records.

The Online Certificate Status Protocol (OCSP) is a network protocol used for obtaining the revocation status of a digital certificate. It enables clients (like web browsers) to check whether a specific digital certificate, typically issued by a Certificate Authority (CA), is still valid or has been revoked before its expiration date. This is particularly important in scenarios where security and trust are vital, such as in SSL/TLS communications.

Privacy-Enhanced Mail (PEM) is a standard for providing secure email communication. It was developed in the early 1990s to enhance the privacy and security of email messages. PEM employs various cryptographic techniques to ensure confidentiality, integrity, and authentication of email messages. The key features of Privacy-Enhanced Mail include: 1. **Encryption**: PEM uses cryptographic algorithms to encrypt email content, ensuring that only the intended recipients can read the messages.

The Protocol for Carrying Authentication for Network Access, commonly known as CAPWAP (Control and Provisioning of Wireless Access Points), is a protocol developed by the Internet Engineering Task Force (IETF) that is used to manage and control wireless access points (APs) in a network. It allows for the centralized management and configuration of multiple access points, simplifying the deployment and management of wireless networks.

The Secure Communications Interoperability Protocol (SCIP) is a protocol developed by the U.S. Department of Defense (DoD) to facilitate secure voice communications, particularly for military and governmental organizations. SCIP is designed to enable interoperability among various secure telecommunication systems, allowing different devices and platforms to communicate securely with one another.

SSH File Transfer Protocol (SFTP) clients are software applications that allow users to transfer files securely over a network using the SSH (Secure Shell) protocol. SFTP is an extension of the SSH protocol that provides a secure way to transfer files and manage file systems over a secure connection. ### Key Features of SFTP Clients: 1. **Secure File Transfers**: SFTP encrypts both the command and data, which prevents eavesdropping, connection hijacking, and other attacks.

Secure Copy Protocol (SCP) is a network protocol that allows for the secure transfer of files between a local host and a remote host or between two remote hosts over a network. It is based on the Secure Shell (SSH) protocol, which provides authentication, encryption, and integrity for the data being transferred.

Secure multi-party computation (SMPC) is a subfield of cryptography that enables a group of parties to jointly compute a function over their inputs while keeping those inputs private. In essence, it allows multiple participants to collaboratively compute a result without revealing their individual inputs to one another. ### Key Concepts: 1. **Privacy**: Each participant's input remains confidential, meaning that no participant learns anything about the other participants' inputs beyond what can be inferred from the output of the computation.

Signal Protocol is an encryption protocol designed for secure communication. It was developed by Open Systems Whispers to facilitate private messaging between users and is used in applications such as Signal, WhatsApp, and Facebook Messenger. The protocol provides end-to-end encryption, meaning that only the communicating users can read the messages, while intermediaries including service providers cannot access the content of the communications.

Transport Layer Security (TLS) is a cryptographic protocol designed to provide secure communication over a computer network. It is widely used to protect data transmitted between a client (such as a web browser) and a server (such as a web server), ensuring privacy, data integrity, and authentication. ### Key Features of TLS: 1. **Encryption**: TLS encrypts the data being transmitted, which helps protect it from eavesdroppers and man-in-the-middle attacks.

Wi-Fi Protected Setup (WPS) is a network security standard designed to make it easier to connect devices to a wireless network securely. Introduced by the Wi-Fi Alliance, WPS simplifies the process of establishing a secure connection between a router and devices such as printers, smartphones, and laptops. There are several methods for using WPS: 1. **Push Button Method**: This is the simplest method.

ZRTP (Z Real-time Transport Protocol) is a protocol designed to provide encryption for Voice over IP (VoIP) calls. It enables secure audio communication by allowing endpoints to negotiate keys for encrypting media streams in real time. Here are some key features and details about ZRTP: 1. **End-to-End Security**: ZRTP provides end-to-end encryption, meaning that audio calls are encrypted from one endpoint to another without needing to rely on a central server for key management.

OpenPGP is an open standard for data encryption and digital signatures, which is defined by the IETF in the RFC 4880 document. It is based on the original PGP (Pretty Good Privacy) program developed by Phil Zimmermann in the early 1990s. OpenPGP allows users to secure the confidentiality and integrity of their communications and data through encryption and to verify the identity of the entities involved through digital signatures.