End-entity PKI Certificate Minimum DSA Public Key Size, v1.0

This Trustmark Definition specifies a minimum DSA key size for private keys use with PKI.
NOTE:If an assessment step references organization-defined elements (E.g. <organization-defined personnel or roles>, <organization-defined frequency>, etc.), corresponding citations/excerpts must be provided to confirm that the organization has established and documented these values and that they apply as referenced in the conformance criteria.

Similarly, if a "Selection" among multiple options (e.g. [Selection (one or more): as needed; ]) is specified, evidence must be provided to establish that the option(s) implemented by the organization have been defined and documented.

The assessment step shall not be marked as satisfied without this evidence.

Assessment Step

1
End-entity PKI Certificate Minimum DSA Public Key Size (End-entityPKICertificateMinimumDSAPublicKeySize)
Do end-entity PKI certificates contain public keys that are at least 2048 bits for DSA?
Artifact
A1
Provide evidence (e.g. organizational policies, procedures, compliance/assessment reports, etc.) that support the assessor's response to this assessment step.
If conformance criteria reference organization-defined elements (e.g. <organization-defined personnel or roles>, <organization-defined frequency>, etc.), these values must be defined and documented by the organization.

Similarly, if the criteria specify a "Selection" among multiple options (e.g. [Selection (one or more): as needed; ]), the option(s) implemented by the organization must also be defined and documented.

Conformance Criteria (1)

C1
End-entity certificates that include a keyUsage extension that only asserts the digitalSignature bit that expire on or after 12/31/2013 shall contain public keys that are at least 2048 bits for RSA or DSA, or 224 bits for elliptic curve algorithms. Beginning 01/01/2011, all valid end-entity certificates that include a keyUsage extension that asserts the nonRepudiation, keyEncipherment, dataEncipherment, or keyAgreement bit shall contain public keys that are at least 2048 bits for RSA, DSA, or Diffie-Hellman, or 224 bits for elliptic curve algorithms. Beginning 01/01/2011, all valid end-entity certificates that do not include a keyUsage extension shall contain public keys that are at least 2048 bits for RSA, DSA, or Diffie-Hellman, or 224 bits for elliptic curve algorithms.
Citation
FBCA-CP
Section 6.1.5.