Ephemeral key

Term · Cybersecurity · MLC-T-CYB-001584

1. A cryptographic key that is generated for each execution of a cryptographic process (e.g., key establishment) and meets other requirements of the key type (e.g., unique to each message or session).

2. A cryptographic key that is generated for each execution of a key-establishment process and that meets other requirements of the key type (e.g., unique to each message or session).

3. A cryptographic key that is generated for each execution of a key-establishment process and that meets other requirements of the key type (e.g., unique to each message or session).
In some cases, ephemeral keys are used more than once within a single session (e.g., for broadcast applications) where the sender generates only one ephemeral key pair per message, and the private key is combined separately with each recipient’s public key.

4. A cryptographic key that is generated for each execution of a cryptographic process (e.g., key establishment) and that meets other requirements of the key type (e.g., unique to each message or session).

5. A cryptographic key that is generated for each execution of a key- establishment process and that meets other requirements of the key type (e.g., unique to each message or session). In some cases, ephemeral keys are used more than once within a single session (e.g., broadcast applications) where the sender generates only one ephemeral key pair per message, and the private key is combined separately with each recipient’s public key.

Table 1. Record
Identifier	MLC-T-CYB-001584
Field	Cybersecurity
References	NIST SP 800-227; NIST SP 800-57 Part 2 Rev.1; NIST SP 800-57 Part 1 Rev. 4 [Superseded]; NIST SP 800-57 Part 1 Rev. 5; NIST SP 800-57 Part 1 Rev. 3 [Superseded]; NIST CSRC Glossary

Record as JSON

{
  "id": "MLC-T-CYB-001584",
  "term": "Ephemeral key",
  "field": "Cybersecurity",
  "term_source": "Ephemeral Key",
  "definition": "1. A cryptographic key that is generated for each execution of a cryptographic process (e.g., key establishment) and meets other requirements of the key type (e.g., unique to each message or session).\n\n2. A cryptographic key that is generated for each execution of a key-establishment process and that meets other requirements of the key type (e.g., unique to each message or session).\n\n3. A cryptographic key that is generated for each execution of a key-establishment process and that meets other requirements of the key type (e.g., unique to each message or session).\nIn some cases, ephemeral keys are used more than once within a single session (e.g., for broadcast applications) where the sender generates only one ephemeral key pair per message, and the private key is combined separately with each recipient’s public key.\n\n4. A cryptographic key that is generated for each execution of a cryptographic process (e.g., key establishment) and that meets other requirements of the key type (e.g., unique to each message or session).\n\n5. A cryptographic key that is generated for each execution of a key- establishment process and that meets other requirements of the key type (e.g., unique to each message or session). In some cases, ephemeral keys are used more than once within a single session (e.g., broadcast applications) where the sender generates only one ephemeral key pair per message, and the private key is combined separately with each recipient’s public key.",
  "references": [
    "NIST SP 800-227",
    "NIST SP 800-57 Part 2 Rev.1",
    "NIST SP 800-57 Part 1 Rev. 4 [Superseded]",
    "NIST SP 800-57 Part 1 Rev. 5",
    "NIST SP 800-57 Part 1 Rev. 3 [Superseded]",
    "NIST CSRC Glossary"
  ],
  "url": "https://mlchart.com/terminology/cybersecurity/ephemeral-key/"
}

Record 1,578 of 4,669 in Cybersecurity terminology (MLC-0102). Request the full dataset.