PKCS#11
|
| Cryptographic Token Interface Standard |
PKCS#11 |
Sections | |
| RSA public key objects | |
| DSA public key objects | |
| ECDSA public key objects | |
| Diffie-Hellman public key objects | |
| KEA public key objects | |
Public key objects (object class CKO_PUBLIC_KEY) hold public keys. This version of Cryptoki recognizes five types of public keys: RSA, DSA, ECDSA, Diffie-Hellman, and KEA. The following table defines the attributes common to all public keys, in addition to the common attributes listed in Table 14 , Table 18 and Table 24 :
Table 25, Common Public Key Attributes
| Attribute | Data type | Meaning |
| CKA_SUBJECT8 | Byte array | DER-encoding of the key subject name (default empty) |
| CKA_ENCRYPT8 | CK_BBOOL | TRUE if key supports encryption9 |
| CKA_VERIFY8 | CK_BBOOL | TRUE if key supports verification where the signature is an appendix to the data9 |
| CKA_VERIFY_RECOVER8 | CK_BBOOL | TRUE if key supports verification where the data is recovered from the signature9 |
| CKA_WRAP8 | CK_BBOOL | TRUE if key supports wrapping (i.e., can be used to wrap other keys)9 |
It is intended in the interests of interoperability that the subject name and key identifier for a public key will be the same as those for the corresponding certificate and private key. However, Cryptoki does not enforce this, and it is not required that the certificate and private key also be stored on the token.
To map between ISO/IEC 9594-8 (X.509) keyUsage flags for public keys and the PKCS #11 attributes for public keys, use the following table.
Table 26, Mapping of X.509 key usage flags to cryptoki attributes for public keys
| '''Key usage flags for public keys in X.509 public key certificates''' | Corresponding cryptoki attributes for public keys. |
| dataEncipherment | CKA_ENCRYPT |
| digitalSignature, keyCertSign, cRLSign | CKA_VERIFY |
| digitalSignature, keyCertSign, cRLSign | CKA_VERIFY_RECOVER |
| keyAgreement | CKA_DERIVE |
| keyEncipherment | CKA_WRAP |
| nonRepudiation | CKA_VERIFY |
| nonRepudiation | CKA_VERIFY_RECOVER |