Cryptography

Chave efêmera

A cryptographic key generated for temporary use in a single session or operation, after which it is discarded and not reused, ensuring forward secrecy in protocols like TLS and ECDH.

Quick answer: A cryptographic key generated for temporary use in a single session or operation, after which it is discarded and not reused, ensuring forward secrecy in protocols like TLS and ECDH.

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Quick answer

A cryptographic key generated for temporary use in a single session or operation, after which it is discarded and not reused, ensuring forward secrecy in protocols like TLS and ECDH.

Why it matters

Chave efêmera matters because it supports clear communication in Cryptography contexts for SOC Analysts, Security Engineers, and Incident Responders. It also connects to aviation training and exam language such as CISSP, CompTIA Security+, and CEH.

Editorial context

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Questions and answers

Questions and answers

What is Chave efêmera?

In this glossary, Chave efêmera refers to: A cryptographic key generated for temporary use in a single session or operation, after which it is discarded and not reused, ensuring forward secrecy in protocols like TLS and ECDH.

How is Chave efêmera used in cybersecurity?

In cybersecurity communication, this term appears in contexts such as: "O uso de uma chave efêmera no TLS garante que, mesmo que a chave de sessão seja comprometida, as comunicações passadas permaneçam seguras devido ao sigilo direto."

Why does Chave efêmera matter in cybersecurity?

Chave efêmera matters because it supports clear communication in Cryptography contexts for SOC Analysts, Security Engineers, and Incident Responders. It also connects to aviation training and exam language such as CISSP, CompTIA Security+, and CEH.

Who uses Chave efêmera?

Chave efêmera is mainly used by SOC Analysts, Security Engineers, and Incident Responders.

What category does Chave efêmera belong to?

In this glossary, Chave efêmera is grouped under Cryptography. Related pages in this category explain adjacent procedures, commands and operational concepts.

Where does this definition come from?

This definition is sourced from ISO 27001, NIST Cybersecurity Framework, MITRE ATT&CK and published by Protermify Cybersecurity as a static cybersecurity reference page.

Definition

A cryptographic key generated for temporary use in a single session or operation, after which it is discarded and not reused, ensuring forward secrecy in protocols like TLS and ECDH.

Operational example

The use of an ephemeral key in TLS ensures that even if a session key is compromised, past communications remain secure due to forward secrecy.

Localized term

Chave efêmera

Localized example

O uso de uma chave efêmera no TLS garante que, mesmo que a chave de sessão seja comprometida, as comunicações passadas permaneçam seguras devido ao sigilo direto.

Definition language

English reference definition

Source

ISO 27001, NIST Cybersecurity Framework, MITRE ATT&CK

Category

Cryptography

Exam relevance

  • CISSP
  • CompTIA Security+
  • CEH

Target audience

  • SOC Analysts
  • Security Engineers
  • Incident Responders

Related terms

Use the related links below to continue through connected cybersecurity terminology.

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