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#include "cc_internal.h"
#include <corecrypto/ccdigest_priv.h>
#include <corecrypto/cchmac.h>
#include <corecrypto/ccn.h>
#include <corecrypto/cc_priv.h>
void
cchmac_final(const struct ccdigest_info *di, cchmac_ctx_t hc,
unsigned char *mac)
{
CC_ENSURE_DIT_ENABLED
// Finalize the inner state of the data being HMAC'd, i.e., H((key \oplus ipad) || m)
ccdigest_final(di, cchmac_digest_ctx(di, hc), cchmac_data(di, hc));
// Set the HMAC output size based on the digest algorithm
cchmac_num(di, hc) = (unsigned int)di->output_size; /* typecast: output size will always fit in an unsigned int */
cchmac_nbits(di, hc) = di->block_size * 8;
// Copy the pre-computed compress(key \oplus opad) back to digest state,
// and then run through the digest once more to finish the HMAC
ccdigest_copy_state(di, cchmac_istate32(di, hc), cchmac_ostate32(di, hc));
ccdigest_final(di, cchmac_digest_ctx(di, hc), mac);
}