pkcs11_softtoken

- Software RSA PKCS#11 softtoken

Synopsis

/usr/lib/security/pkcs11_softtoken.so
/usr/lib/security/64/pkcs11_softtoken.so

Description

The pkcs11_softtoken.so object implements the RSA Security Inc. PKCS#11 Cryptographic Token Interface (Cryptoki), v2.20, specification in software. Persistent storage for token objects is provided by this PKCS#11 implementation.

Application developers should link to libpkcs11.so rather than link directly to pkcs11_softtoken.so. See libpkcs11(3LIB).

The following cryptographic algorithms are implemented: DES, 3DES, AES, Blowfish, RC4, MD5, SHA1, SHA224, SHA256, SHA384, SHA512, RSA, DSA, DH, and ECC.

All of the Standard PKCS#11 functions listed on libpkcs11(3LIB) are implemented except for the following:

C_GetObjectSize
C_InitPIN
C_InitToken
C_WaitForSlotEvent

A call to these functions returns CKR_FUNCTION_NOT_SUPPORTED.

The following RSA PKCS#11 v2.20 mechanisms are supported:

CKM_RSA_PKCS_KEY_PAIR_GEN
CKM_RSA_PKCS
CKM_RSA_X_509

CKM_DSA_KEY_PAIR_GEN
CKM_DSA
CKM_DSA_SHA1

CKM_DH_PKCS_KEY_PAIR_GEN
CKM_DH_PKCS_DERIVE

CKM_EC_KEY_PAIR_GEN
CKM_ECDSA
CKM_ECDSA_SHA1
CKM_ECDH1_DERIVE

CKM_DES_KEY_GEN
CKM_DES_ECB
CKM_DES_CBC
CKM_DES_CBC_PAD

CKM_DES3_KEY_GEN
CKM_DES3_ECB
CKM_DES3_CBC
CKM_DES3_CBC_PAD

CKM_AES_KEY_GEN
CKM_AES_ECB
CKM_AES_CBC
CKM_AES_CBC_PAD
CKM_AES_CTR

CKM_BLOWFISH_KEY_GEN
CKM_BLOWFISH_CBC

CKM_RC4_KEY_GEN
CKM_RC4

CKM_MD5_RSA_PKCS
CKM_SHA1_RSA_PKCS
CKM_SHA224_RSA_PKCS
CKM_SHA256_RSA_PKCS
CKM_SHA384_RSA_PKCS
CKM_SHA512_RSA_PKCS

CKM_MD5
CKM_SHA_1
CKM_SHA224
CKM_SHA256
CKM_SHA384
CKM_SHA512

CKM_MD5_HMAC
CKM_MD5_HMAC_GENERAL
CKM_SHA_1_HMAC
CKM_SHA_1_HMAC_GENERAL
CKM_SHA224_HMAC
CKM_SHA256_HMAC
CKM_SHA224_HMAC_GENERAL
CKM_SHA256_HMAC_GENERAL
CKM_SHA384_HMAC
CKM_SHA384_HMAC_GENERAL

CKM_MD5_KEY_DERIVATION
CKM_SHA1_KEY_DERIVATION
CKM_SHA224_KEY_DERIVATION
CKM_SHA256_KEY_DERIVATION
CKM_SHA384_KEY_DERIVATION
CKM_SHA512_KEY_DERIVATION

CKM_SSL3_PRE_MASTER_KEY_GEN 
CKM_SSL3_MASTER_KEY_DERIVE
CKM_SSL3_KEY_AND_MAC_DERIVE
CKM_SSL3_MASTER_KEY_DERIVE_DH
CKM_TLS_PRE_MASTER_KEY_GEN 
CKM_TLS_MASTER_KEY_DERIVE 
CKM_TLS_KEY_AND_MAC_DERIVE 
CKM_TLS_MASTER_KEY_DERIVE_DH

Each of the following types of key objects has certain token-specific attributes that are set to true by default as a result of object creation, key/key pair generation, and key derivation.

Public key object

CKA_ENCRYPT, CKA_VERIFY, CKA_VERIFY_RECOVER

Private key object

CKA_DECRYPT, CKA_SIGN, CKA_SIGN_RECOVER, CKA_EXTRACTABLE

Secret key object

CKA_ENCRYPT, CKA_DECRYPT, CKA_SIGN, CKA_VERIFY, CKA_EXTRACTABLE

The following certificate objects are supported:

CKC_X_509

For CKC_X_509 certificate objects, the following attributes are supported: CKA_SUBJECT, CKA_VALUE, CKA_LABEL, CKA_ID, CKA_ISSUER, CKA_SERIAL_NUMBER, and CKA_CERTIFICATE_TYPE.

CKC_X_509_ATTR_CERT

For CKC_X_509_ATTR_CERT certificate objects, the following attributes are supported: CKA_OWNER, CKA_VALUE, CKA_LABEL, CKA_SERIAL_NUMBER, CKA_AC_ISSUER, CKA_ATTR_TYPES, and CKA_CERTIFICATE_TYPE.

The search operation of objects matching the template is performed at C_FindObjectsInit. The matched objects are cached for subsequent C_FindObjects operations.

The pkcs11_softtoken.so object provides a filesystem-based persistent token object store for storing token objects. The default location of the token object store is the user's home directory returned by getpwuid_r(). The user can override the default location by using the ${SOFTTOKEN_DIR} environment variable.

If the token object store has never been initialized, the C_Login() function might return CKR_OK but the user is not able to create, generate, derive or find any private token object and receives CKR_PIN_EXPIRED.

The user must use the pktool(1) setpin command with the default passphrase “changeme” as the old passphrase to change the passphrase of the object store. This action is needed to initialize and set the passphrase to a newly created token object store.

After logging into object store with the new passphrase that was set by the pktool setpin command, the user can create and store the private token object in this newly created object store. Until the token object store is initialized by setpin, the C_Login() function is allowed, but all attempts by the user to create, generate, derive or find any private token object fails with a CKR_PIN_EXPIRED error.

The PIN provided for C_Login() and C_SetPIN() functions can be any string of characters with lengths between 1 and 256 and no embedded nulls.

The default location of the token object store is /var/user/$USERNAME/pkcs11_softtoken.

The user can override the default location by using the ${SOFTTOKEN_DIR} environment variable. The location for the alternate token object store is ${SOFTTOKEN_DIR}/pkcs11_softtoken/.

Return Values

The return values for each of the implemented functions are defined and listed in the RSA PKCS#11 v2.20 specification. See http://www.rsasecurity.com

Files

/var/user/$USERNAME/pkcs11_softtoken

user's default token object store

${SOFTTOKEN_DIR}/pkcs11_softtoken

alternate token object store

Attributes

See attributes(5) for a description of the following attributes:

See Also

pktool(1), cryptoadm(1M), libpkcs11(3LIB), attributes(5), pkcs11_kernel(5)

RSA PKCS#11 v2.20 http://www.rsasecurity.com