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We are an unofficial archive, replace .rip by .gov in the URL to access the official website. Access our document index here.

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A lock (Dot gov) or https:// don't prove our archive is authentic, only that you securely accessed it. Note that we are working to fix that :)

Computer Security Resource Center

Computer Security Resource Center

This is an archive
(replace .gov by .rip)
    Glossary
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Issuing Source

Definition(s):

  An authority responsible for the generation of data, digital evidence (such as assertions), or physical documents that can be used as identity evidence.
Source(s):
NIST SP 800-63-3