SHA_DIGEST_LENGTH
if ((res = vmalloc(SHA_DIGEST_LENGTH)) == 0)
if (SHA_DIGEST_LENGTH != res->l) {
if ((res = vmalloc(SHA_DIGEST_LENGTH)) == 0)
return SHA_DIGEST_LENGTH << 3;
if (*outlen < SHA_DIGEST_LENGTH)
*outlen = SHA_DIGEST_LENGTH;
__CTASSERT(NPF_RULE_MAXKEYLEN >= SHA_DIGEST_LENGTH);