为什么这个包 (pdfc-gui) 在 Ubuntu 16.04 上更新我的 ca 证书？

Question

我试图根据以下输出确定我安装的应用程序是否可信。我希望这是获得有关此事的建议的正确平台！

我安装了这个包（pdfc-图形用户界面） 从这里和：

sudo dpkg -i pdfc-gui-21.4.225.deb

在安装中我看到它添加/更新了 ssl 证书（请参阅下面的安装输出）。
不幸的是，我对 Linux 的了解不够深入，无法确定这是否是我应该担心的事情。

谁能给我解释一下这个输出吗？

我是否应该删除该软件包，如果是，如何确保它所做的所有更改都会真正恢复？

sudo dpkg -i pdfc-gui-21.4.225.deb
Selecting previously unselected package pdfc-gui.
(Reading database ... 734495 files and directories currently installed.)
Preparing to unpack pdfc-gui-21.4.225.deb ...
Unpacking pdfc-gui (21.4.225) ...
Setting up pdfc-gui (21.4.225) ...
Clearing symlinks in /etc/ssl/certs...
done.
Updating certificates in /etc/ssl/certs...
129 added, 0 removed; done.
Running hooks in /etc/ca-certificates/update.d...

Replacing debian:ACCVRAIZ1.pem
Replacing debian:Actalis_Authentication_Root_CA.pem
Replacing debian:AffirmTrust_Commercial.pem
Replacing debian:AffirmTrust_Networking.pem
Replacing debian:AffirmTrust_Premium.pem
Replacing debian:AffirmTrust_Premium_ECC.pem
Replacing debian:Atos_TrustedRoot_2011.pem
Replacing debian:Autoridad_de_Certificacion_Firmaprofesional_CIF_A62634068.pem
Replacing debian:Baltimore_CyberTrust_Root.pem
Replacing debian:Buypass_Class_2_Root_CA.pem
Replacing debian:Buypass_Class_3_Root_CA.pem
Replacing debian:CA_Disig_Root_R2.pem
Replacing debian:CFCA_EV_ROOT.pem
Replacing debian:COMODO_Certification_Authority.pem
Replacing debian:COMODO_ECC_Certification_Authority.pem
Replacing debian:COMODO_RSA_Certification_Authority.pem
Replacing debian:Certigna.pem
Replacing debian:Certum_Trusted_Network_CA.pem
Replacing debian:Chambers_of_Commerce_Root_-_2008.pem
Replacing debian:Comodo_AAA_Services_root.pem
Replacing debian:Cybertrust_Global_Root.pem
Replacing debian:D-TRUST_Root_Class_3_CA_2_2009.pem
Replacing debian:D-TRUST_Root_Class_3_CA_2_EV_2009.pem
Replacing debian:DST_Root_CA_X3.pem
Replacing debian:DigiCert_Assured_ID_Root_CA.pem
Replacing debian:DigiCert_Assured_ID_Root_G2.pem
Replacing debian:DigiCert_Assured_ID_Root_G3.pem
Replacing debian:DigiCert_Global_Root_CA.pem
Replacing debian:DigiCert_Global_Root_G2.pem
Replacing debian:DigiCert_Global_Root_G3.pem
Replacing debian:DigiCert_High_Assurance_EV_Root_CA.pem
Replacing debian:DigiCert_Trusted_Root_G4.pem
Replacing debian:E-Tugra_Certification_Authority.pem
Replacing debian:EC-ACC.pem
Replacing debian:Entrust.net_Premium_2048_Secure_Server_CA.pem
Replacing debian:Entrust_Root_Certification_Authority.pem
Replacing debian:Entrust_Root_Certification_Authority_-_EC1.pem
Replacing debian:Entrust_Root_Certification_Authority_-_G2.pem
Replacing debian:GeoTrust_Primary_Certification_Authority_-_G2.pem
Replacing debian:GlobalSign_ECC_Root_CA_-_R4.pem
Replacing debian:GlobalSign_ECC_Root_CA_-_R5.pem
Replacing debian:GlobalSign_Root_CA.pem
Replacing debian:GlobalSign_Root_CA_-_R2.pem
Replacing debian:GlobalSign_Root_CA_-_R3.pem
Replacing debian:Global_Chambersign_Root_-_2008.pem
Replacing debian:Go_Daddy_Class_2_CA.pem
Replacing debian:Go_Daddy_Root_Certificate_Authority_-_G2.pem
Replacing debian:Hellenic_Academic_and_Research_Institutions_RootCA_2011.pem
Replacing debian:Hongkong_Post_Root_CA_1.pem
Replacing debian:IdenTrust_Commercial_Root_CA_1.pem
Replacing debian:IdenTrust_Public_Sector_Root_CA_1.pem
Replacing debian:Izenpe.com.pem
Replacing debian:Microsec_e-Szigno_Root_CA_2009.pem
Replacing debian:NetLock_Arany_=Class_Gold=_Főtanúsítvány.pem
Replacing debian:Network_Solutions_Certificate_Authority.pem
Replacing debian:OISTE_WISeKey_Global_Root_GB_CA.pem
Replacing debian:QuoVadis_Root_CA.pem
Replacing debian:QuoVadis_Root_CA_1_G3.pem
Replacing debian:QuoVadis_Root_CA_2.pem
Replacing debian:QuoVadis_Root_CA_2_G3.pem
Replacing debian:QuoVadis_Root_CA_3.pem
Replacing debian:QuoVadis_Root_CA_3_G3.pem
Replacing debian:SecureSign_RootCA11.pem
Replacing debian:SecureTrust_CA.pem
Replacing debian:Secure_Global_CA.pem
Replacing debian:Security_Communication_RootCA2.pem
Replacing debian:Security_Communication_Root_CA.pem
Replacing debian:Sonera_Class_2_Root_CA.pem
Replacing debian:Staat_der_Nederlanden_EV_Root_CA.pem
Replacing debian:Staat_der_Nederlanden_Root_CA_-_G3.pem
Replacing debian:Starfield_Class_2_CA.pem
Replacing debian:Starfield_Root_Certificate_Authority_-_G2.pem
Replacing debian:Starfield_Services_Root_Certificate_Authority_-_G2.pem
Replacing debian:SwissSign_Gold_CA_-_G2.pem
Replacing debian:SwissSign_Silver_CA_-_G2.pem
Replacing debian:T-TeleSec_GlobalRoot_Class_2.pem
Replacing debian:T-TeleSec_GlobalRoot_Class_3.pem
Replacing debian:TWCA_Global_Root_CA.pem
Replacing debian:TWCA_Root_Certification_Authority.pem
Replacing debian:TeliaSonera_Root_CA_v1.pem
Replacing debian:Trustis_FPS_Root_CA.pem
Replacing debian:USERTrust_ECC_Certification_Authority.pem
Replacing debian:USERTrust_RSA_Certification_Authority.pem
Replacing debian:VeriSign_Universal_Root_Certification_Authority.pem
Replacing debian:XRamp_Global_CA_Root.pem
Replacing debian:certSIGN_ROOT_CA.pem
Replacing debian:ePKI_Root_Certification_Authority.pem
Replacing debian:AC_RAIZ_FNMT-RCM.pem
Replacing debian:Amazon_Root_CA_1.pem
Replacing debian:Amazon_Root_CA_2.pem
Replacing debian:Amazon_Root_CA_3.pem
Replacing debian:Amazon_Root_CA_4.pem
Replacing debian:Certum_Trusted_Network_CA_2.pem
Replacing debian:Hellenic_Academic_and_Research_Institutions_ECC_RootCA_2015.pem
Replacing debian:Hellenic_Academic_and_Research_Institutions_RootCA_2015.pem
Replacing debian:ISRG_Root_X1.pem
Replacing debian:SZAFIR_ROOT_CA2.pem
Replacing debian:TUBITAK_Kamu_SM_SSL_Kok_Sertifikasi_-_Surum_1.pem
Replacing debian:GDCA_TrustAUTH_R5_ROOT.pem
Replacing debian:GlobalSign_Root_CA_-_R6.pem
Replacing debian:OISTE_WISeKey_Global_Root_GC_CA.pem
Replacing debian:SSL.com_EV_Root_Certification_Authority_ECC.pem
Replacing debian:SSL.com_EV_Root_Certification_Authority_RSA_R2.pem
Replacing debian:SSL.com_Root_Certification_Authority_ECC.pem
Replacing debian:SSL.com_Root_Certification_Authority_RSA.pem
Replacing debian:TrustCor_ECA-1.pem
Replacing debian:TrustCor_RootCert_CA-1.pem
Replacing debian:TrustCor_RootCert_CA-2.pem
Replacing debian:Certigna_Root_CA.pem
Replacing debian:certSIGN_Root_CA_G2.pem
Replacing debian:emSign_ECC_Root_CA_-_C3.pem
Replacing debian:emSign_ECC_Root_CA_-_G3.pem
Replacing debian:emSign_Root_CA_-_C1.pem
Replacing debian:emSign_Root_CA_-_G1.pem
Replacing debian:Entrust_Root_Certification_Authority_-_G4.pem
Replacing debian:e-Szigno_Root_CA_2017.pem
Replacing debian:GTS_Root_R1.pem
Replacing debian:GTS_Root_R2.pem
Replacing debian:GTS_Root_R3.pem
Replacing debian:GTS_Root_R4.pem
Replacing debian:Hongkong_Post_Root_CA_3.pem
Replacing debian:Microsoft_ECC_Root_Certificate_Authority_2017.pem
Replacing debian:Microsoft_RSA_Root_Certificate_Authority_2017.pem
Replacing debian:Trustwave_Global_Certification_Authority.pem
Replacing debian:Trustwave_Global_ECC_P256_Certification_Authority.pem
Replacing debian:Trustwave_Global_ECC_P384_Certification_Authority.pem
Replacing debian:UCA_Extended_Validation_Root.pem
Replacing debian:UCA_Global_G2_Root.pem
Replacing debian:NAVER_Global_Root_Certification_Authority.pem
done.
done.
Processing triggers for desktop-file-utils (0.22-1ubuntu5.2) ...
Processing triggers for bamfdaemon (0.5.3~bzr0+16.04.20180209-0ubuntu1) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for gnome-menus (3.13.3-6ubuntu3.1) ...
Processing triggers for mime-support (3.59ubuntu1) ...
Processing triggers for hicolor-icon-theme (0.15-0ubuntu1.1) ...

Answer 1

该程序在其脚本中调用此postinst：

update-ca-certificates -f 2>/dev/null

旗帜-f：

-f, --fresh 新鲜更新。删除 /etc/ssl/certs 目录中的符号链接。

因此输出与调用的输出匹配update-ca-certificates。请注意，还有其他触发器，因此证书更新可能一直在等待，来自另一个不相关的安装/更新，并且现在才被处理。

您可以使用以下命令检查文件的内容deb：

ar -x packages.deb

然后，（卸载）安装脚本就在里面control.tar.xz（至少对于 Debian 二进制包格式的 2.0 版本）。

话虽如此，世界上没有办法信任闭源应用程序。如果它做了一些不正当的事情，您可能不会在输出中看到它（更改 CA 证书肯定是不正当的，但情况似乎并非如此）。