CMS_SignerInfo_verify_content
int CMS_SignerInfo_verify_content(CMS_SignerInfo *si, BIO *chain);
LCRYPTO_ALIAS(CMS_SignerInfo_verify_content);
if (CMS_SignerInfo_verify_content(si, cmsbio) <= 0) {
LCRYPTO_USED(CMS_SignerInfo_verify_content);