I have an RSA-key pair with the corresponding certificate in a smartcard.
I wanted to retrieve the values of the public modulus and the public
exponent of the
public key to assign the values in a search template , and then to
use the search template
in the PKCS11-Methods
C_FindObjectsInit and C_FindObjects to get a handle to the private
key.
But something went wrong, it didn't find an object at all, it matched
only when in my
search-template was just the the public modulus.
Does anyone has an idea?
thanx
nenad tomasic
pN = publicKey->pkey.rsa->n; /*public
Modulus as a *BIGNUM*/
pE = publicKey->pkey.rsa->e; /*public
exponent as a *BIGNUM*/
pModulus = malloc(BN_num_bytes(pN));
pExponent = malloc(BN_num_bytes(pE));
template[0].pValue = pModulus;
template[1].pValue = pExponent;
template[0].ulValueLen = BN_bn2bin(pN, template[0].pValue);
template[1].ulValueLen = BN_bn2bin(pE, template[1].pValue);
rv = tokenInfo.pFunctionList->C_FindObjectsInit(hSession, template,
2);
if(rv != CKR_OK) {
return NULL;
}
rv = tokenInfo.pFunctionList->C_FindObjects(hSession, phPrivKey,
1, &ulObjectCount);
if(rv != CKR_OK) {
return NULL;
}
==> ulObjectCount == 0
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