【发布时间】：2019-04-13 17:44:06
【问题描述】：
如果我尝试使用 openssl 或 wget 而不显式传入 ca 目录，则证书无法验证。我想让 ubuntu 恢复到可以轻松验证普通网站（如 google.com）的原始状态。是否需要设置环境变量，或者需要启用符号链接才能正确配置？
chris@chris:~$ wget --ca-directory=/etc/ssl/certs https://google.com
--2019-04-13 12:42:12-- https://google.com/
Resolving google.com (google.com)... 172.217.4.206, 2607:f8b0:4009:807::200e
Connecting to google.com (google.com)|172.217.4.206|:443... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: https://www.google.com/ [following]
--2019-04-13 12:42:12-- https://www.google.com/
Resolving www.google.com (www.google.com)... 172.217.4.36, 2607:f8b0:4009:80f::2004
Connecting to www.google.com (www.google.com)|172.217.4.36|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [text/html]
Saving to: ‘index.html.5’
index.html.5 [ <=> ] 11.07K --.-KB/s in 0.004s
2019-04-13 12:42:12 (2.88 MB/s) - ‘index.html.5’ saved [11340]
chris@chris:~$ wget https://google.com
--2019-04-13 12:42:19-- https://google.com/
Resolving google.com (google.com)... 172.217.4.206, 2607:f8b0:4009:807::200e
Connecting to google.com (google.com)|172.217.4.206|:443... connected.
ERROR: cannot verify google.com's certificate, issued by ‘CN=Google Internet Authority G3,O=Google Trust Services,C=US’:
Unable to locally verify the issuer's authority.
To connect to google.com insecurely, use `--no-check-certificate'.
如果我没有明确传入-CApath，这与openssl 的行为相同
-----END CERTIFICATE-----
subject=/C=US/ST=California/L=Mountain View/O=Google LLC/CN=www.google.com
issuer=/C=US/O=Google Trust Services/CN=Google Internet Authority G3
---
No client certificate CA names sent
Peer signing digest: SHA256
Server Temp Key: X25519, 253 bits
---
SSL handshake has read 2962 bytes and written 261 bytes
Verification error: unable to get local issuer certificate
---
【问题讨论】：
-
使用命令
c_rehash -v找出您的 openssl 的默认证书目录（例如 /usr/local/ssl/certs）。一旦你知道了，你可以使用复制/符号链接证书。 -
@LorinczyZsigmond 这是
$ c_rehash -v chris@chris:~$的输出