Ошибка OPENSSL (help)

В чем проблема?

C:\Users\dick\Desktop\Защита Информации\7\lab7>..\OpenSSl\openssl smime -verify -in toVovaFromDima.s.msg -signer Dmytro_certificate.pem -CAfile CatalogCertificateDmytro.pem -out f1.txt Verification failure 8440:error:21075075:PKCS7 routines:PKCS7_verify:certificate verify error:.\crypto\pkcs7\pk7_smime.c:222:Verify error:self signed certificate