RSA public key objects

RSA public key objects (object class CKO_PUBLIC_KEY, key type CKK_RSA) hold RSA public keys. The following table defines the RSA public key object attributes, in addition to the common attributes defined for this object class:

Table 35, RSA Public Key Object Attributes

Attribute	Data type	Meaning
CKA_MODULUS^1,4	Big integer	Modulus n
CKA_MODULUS_BITS^2,3	CK_ULONG	Length in bits of modulus n
CKA_PUBLIC_EXPONENT¹	Big integer	Public exponent e

Depending on the token, there may be limits on the length of key components. See PKCS #1 for more information on RSA keys.

CK_OBJECT_CLASS class = CKO_PUBLIC_KEY;
CK_KEY_TYPE keyType = CKK_RSA;
CK_UTF8CHAR label[] = "An RSA public key object";
CK_BYTE modulus[] = {...};
CK_BYTE exponent[] = {...};
CK_BBOOL true = CK_TRUE;
CK_ATTRIBUTE template[] = {
{CKA_CLASS, &class, sizeof(class)},
{CKA_KEY_TYPE, &keyType, sizeof(keyType)},
{CKA_TOKEN, &true, sizeof(true)},
{CKA_LABEL, label, sizeof(label)-1},
{CKA_WRAP, &true, sizeof(true)},
{CKA_ENCRYPT, &true, sizeof(true)},
{CKA_MODULUS, modulus, sizeof(modulus)},
{CKA_PUBLIC_EXPONENT, exponent, sizeof(exponent)}
};