I

{
  "id": "MLC-T-CYB-001988",
  "term": "I",
  "field": "Cybersecurity",
  "definition": "1. A counter taking integer values in the interval [1, 2^r-1] that is encoded as a bit string of length r; used as an input to each invocation of a PRF in the counter mode and (optionally) in the feedback and double-pipeline iteration modes.\n\n2. The counter for each iteration, which is represented as a binary string of length r when it is an input to each iteration of the PRF.\n\n3. Input Block\n\n4. A 16-byte string used in LMS as a key pair identifier.",
  "references": [
    "NIST SP 800-108r1 [August 2022 (Includes updates as of 02-02-2024)]",
    "NIST SP 800-108 [Superseded]",
    "NIST SP 800-20",
    "NIST SP 800-208",
    "NIST CSRC Glossary"
  ],
  "url": "https://mlchart.com/terminology/cybersecurity/i-term/"
}