//Open session. Required for every crypto operation CK_SESSION_HANDLE hSession;
rv = C_OpenSession( 0, 0, NULL, NULL, );
//Set mechanism – type of crypto operation
CK_MECHANISM digestMechanism = { 0, NULL, 0 }; digestMechanism.mechanism = CKM_SHA256;
//Initialize crypto operation rv = C_DigestInit( hSession, );
//prepare input and output buffers uint8_t input[] = {'a', 'b', 'c'}; uint8_t digest[64];
uint32_t inputlen = sizeof( input ); uint64_t digestlen = sizeof( digest )
//Invoke crypto operation
rv = C_Digest( hSession, input, inputlen, digest, );
// Close crypto session
rv = C_CloseSession( hSession )
//Call this at the end of all crypto operations rv = C_Finalize( NULL_PTR );
8Overview