P11_aes_ctr_paramsSourceCounters for AES CTR. In PKCS11 applications:
bits must be between 1 and 128, inclusive. It represents the number of bits that will act as a counter in block.block must be a 16-byte string. Its counter part (big endian) is at the end.These invariants are not checked, in order to represent invalid states that DLLs may return.