CKM_DES3_CMAC

TIP   Some mechanisms in this collection have both a "general" variant and a similarly named variant without "general" in the name. Per the PKCS#11 specification the _GENERAL variant of mechanism accepts a mechanism parameter that is used to define the length of the signature that is returned. The length can typically be any value between 1 and the length of the underlying HASH algorithm.

The variants without _GENERAL do not accept any mechanism parameters and always return a fixed length signature; where the length is defined by the underlying HASH algorithm.

Firmware 7.8.4 and Newer Summary

FIPS approved? Yes
Supported functions Sign | Verify
Functions restricted from FIPS use Cannot sign
Minimum key length (bits) 128
Minimum key length for FIPS use (bits) 192
Minimum legacy key length for FIPS use (bits) 128
Maximum key length (bits) 192
Block size 8
Digest size 0
Key types DES3
Algorithms DES3
Modes MAC
Flags Extractable | CMAC

NOTE   In this firmware version, "Functions restricted from FIPS use" has changed for this mechanism, to comply with FIPS 140-3 requirements.

Firmware 7.8.2 and Older Summary

FIPS approved? Yes
Supported functions Sign | Verify
Functions restricted from FIPS use None
Minimum key length (bits) 128
Minimum key length for FIPS use (bits) 192
Minimum legacy key length for FIPS use (bits) 128
Maximum key length (bits) 192
Block size 8
Digest size 0
Key types DES3
Algorithms DES3
Modes MAC
Flags Extractable | CMAC

NOTE   Using Luna HSM Firmware 7.7.0 and newer, 3DES keys have a usage counter attribute (CKA_BYTES_REMAINING) that limits each key instance to encrypting a maximum of 2^16 8-byte blocks of data when the HSM is in FIPS mode (HSM policy 12: Allow non-FIPS algorithms set to OFF). When the counter runs out, that key can no longer be used for encryption, wrapping, deriving, or signing, but can still be used for decrypting, unwrapping, and verifying pre-existing objects.

The CKA_BYTES_REMAINING attribute is available when HSM policy 12: Allow non-FIPS algorithms is set to OFF, but cannot be viewed if the policy is set to ON.

The attribute is preserved through backup/restore using a Luna Backup HSM 7; restoring the key restores the counter's setting at the time of backup.

The attribute is not preserved through backup/restore using a Luna Backup HSM G5; restoring the key resets the counter to the maximum.