h&gt;

int CMS_verify(CMS_ContentInfo *cms, STACK_OF(X509) *certs, X509_STORE *store,
               BIO *detached_data, BIO *out, unsigned int flags);
BIO *CMS_SignedData_verify(CMS_SignedData *sd, BIO *detached_data,
                           STACK_OF(X509) *scerts, X509_STORE *store,
                           STACK_OF(X509) *extra, STACK_OF(X509_CRL) *crls,
                           unsigned int flags,
                           OSSL_LIB_CTX *libctx, const char *propq);

STACK_OF(X509) *CMS_get0_signe