# Certificateless cryptography > Variant of ID-based cryptography **Wikidata**: [Q5065118](https://www.wikidata.org/wiki/Q5065118) **Wikipedia**: [English](https://en.wikipedia.org/wiki/Certificateless_cryptography) **Source**: https://4ort.xyz/entity/certificateless-cryptography ## Summary Certificateless cryptography is a variant of ID-based cryptography and a subclass of the broader field of cryptography. It exists within the practice and study of secure communication techniques, falling under the specialized domain of security engineering designed to protect data from unauthorized access. ## Key Facts * **Classification:** Certificateless cryptography is a subclass of **cryptography**. * **Type:** It is explicitly defined as a **variant of ID-based cryptography**. * **Aliases:** Also known as **Criptografia sin certificados**. * **Wikipedia Presence:** Maintains a Wikipedia title "Certificateless cryptography" with sitelinks across 3 languages: **English (en)**, **Spanish (es)**, and **Portuguese (pt)**. * **Identifiers:** * **Freebase ID:** /m/022rgd * **Microsoft Academic ID:** 2778049999 (discontinued service) * **Wikidata Description:** Variant of ID-based cryptography * **Parent Field Context:** Belongs to the field of security engineering, which includes related subfields such as quantum cryptography, post-quantum cryptography, symmetric-key algorithms, and public-key cryptography. ## FAQs ### Q: What is Certificateless cryptography? A: Certificateless cryptography is a specific variant of ID-based cryptography. It is categorized as a subclass of the broader discipline of cryptography. ### Q: How does Certificateless cryptography relate to the broader field of security? A: It is a specialized technique within security engineering. This parent field is dedicated to designing and implementing systems that ensure information remains confidential and tamper-proof. ### Q: In which languages is information about Certificateless cryptography available? A: According to sitelink data, information regarding this entity is available in English, Spanish, and Portuguese. ### Q: What is the broader context of cryptography as a field? A: Cryptography is the practice of secure communication studied by cryptographers. It includes various subfields like quantum and post-quantum cryptography and has a history involving events such as the crypto wars and organizations like Crypto AG. ## Why It Matters Certificateless cryptography matters as a specialized solution within the hierarchy of security engineering. By existing as a variant of ID-based cryptography, it represents a specific approach to solving the fundamental problem of secure communication. It contributes to the broader goal of protecting sensitive information in sectors such as finance, healthcare, and government. As a part of the cryptographic ecosystem, it plays a role in the ongoing evolution of systems designed to keep data confidential and protect the internet from cyber threats. ## Notable For * Being a distinct **variant of ID-based cryptography**. * Functioning as a **subclass of cryptography**, distinct from but related to other subfields like symmetric-key and public-key algorithms. * Having a multilingual presence on Wikipedia, specifically in **English, Spanish, and Portuguese**. * Being mapped within semantic knowledge graphs, evidenced by its **Freebase ID** (/m/022rgd). ## Body ### Definition and Classification Certificateless cryptography is a recognized entity within the field of information security. Structurally, it is positioned as a **subclass of cryptography**. Its specific technical definition is that of a **variant of ID-based cryptography**. This classification distinguishes it from other cryptographic methods such as symmetric-key algorithms or public-key cryptography, while still adhering to the core principles of secure communication techniques. ### Context within Cryptography As a subclass of cryptography, Certificateless cryptography inherits the context of its parent field. Cryptography is the practice and study of techniques for secure communication in the presence of adversarial behavior. It is a specialized field within **security engineering**. The broader field encompasses several subfields alongside certificateless methods, including: * **Quantum cryptography:** Security against quantum computers. * **Post-quantum cryptography:** Security against the potential threat of quantum computing. * **Symmetric-key algorithms:** Use of the same key for encryption and decryption. * **Public-key cryptography:** Use of a pair of keys (public and private). The discipline is practiced by **cryptographers**, specialists who work to ensure the security and privacy of digital communications across various sectors including finance, healthcare, and government. ### Historical and Industrial Background While specific historical dates for Certificateless cryptography are not detailed in the provided data, the parent field of cryptography has a significant history. This includes the **"crypto wars,"** a series of conflicts between governments and technology companies over the use of encryption. The industry is also noted for the presence of organizations such as **Crypto AG**, a Swiss company that has supplied cryptographic equipment since 1952. These elements form the historical and industrial backdrop against which certificateless cryptography exists. ### Identifiers and Digital Presence Certificateless cryptography is indexed and tracked by several academic and knowledge platforms: * **Microsoft Academic:** Assigned the ID **2778049999** (note: this service is discontinued). * **Freebase:** Mapped to the identifier **/m/022rgd**. * **Wikipedia:** The entity has a dedicated page with a **sitelink count of 3**, covering the languages **English, Spanish (es), and Portuguese (pt)**. The Spanish alias for the term is **Criptografia sin certificados**.