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6 Identifiers for PIV Card Interfaces

NIST PIV and digital identity SP 800-78-4
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Title

Identifiers for PIV Card Interfaces

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SP 800-73-4 defines an application programming interface, the PIV Client Application Programming Interface (Part 3), and a set of mandatory card commands, the PIV Card Application Card Command Interface (Part 2). The command syntaxes for these interfaces identify PIV keys using one-byte key references; their associated algorithms (or suites of algorithms) are specified using one-byte algorithm identifiers. The same identifiers are used in both interfaces.

Section 6.1 specifies the key reference values for each of the PIV key types. Section 6.2 defines algorithm identifiers for each cryptographic algorithm supported by this specification. Section 6.3 identifies valid combinations of key reference values and algorithm identifiers.