Critical security parameter

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In cryptography, a critical security parameter (CSP)[1] is information that is either user or system defined and is used to operate a cryptography module in processing encryption functions including cryptographic keys and authentication data, such as passwords, the disclosure or modification of which can compromise the security of a cryptographic module or the security of the information protected by the module.


  1. ^ "FIPS PUB 140-2: Security Requirements for Cryptographic modules" (PDF). NIST. 2002-12-03.