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opensslコマンドで証明書情報を確認する

SSL証明書の更新作業をした際などに利用する、opensslコマンドで証明書情報を確認する方法をいつも忘れて、 自分で書いた社内wikiを見直しているのでいつでも参照出来るようにメモ

ブラウザからだと中間証明書の確認が出来ないので、私はいつもopensslコマンドで確認してます。

たとえばtwitterの証明書を確認する場合は下記のような感じ

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openssl s_client -connect twitter.com:443 -showcerts << EOF
HEAD / HTTP/1.0
EOF

すると下記のような感じで応答が。

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CONNECTED(00000003)
depth=2 /C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=(c) 2006 VeriSign, Inc. - For authorized use only/CN=VeriSign Class 3 Public Primary Certification Authority - G5
verify return:1
depth=1 /C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=Terms of use at https://www.verisign.com/rpa (c)06/CN=VeriSign Class 3 Extended Validation SSL CA
verify return:1
depth=0 /1.3.6.1.4.1.311.60.2.1.3=US/1.3.6.1.4.1.311.60.2.1.2=Delaware/2.5.4.15=Private Organization/serialNumber=4337446/C=US/postalCode=94107/ST=California/L=San Francisco/streetAddress=795 Folsom St, Suite 600/O=Twitter, Inc./OU=Twitter Operations
verify return:1
---
Certificate chain
 0 s:/1.3.6.1.4.1.311.60.2.1.3=US/1.3.6.1.4.1.311.60.2.1.2=Delaware/2.5.4.15=Private Organization/serialNumber=4337446/C=US/postalCode=94107/ST=California/L=San Francisco/streetAddress=795 Folsom St, Suite 600/O=Twitter, Inc./OU=Twitter Operations/CN=twitter.com
   i:/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=Terms of use at https://www.verisign.com/rpa (c)06/CN=VeriSign Class 3 Extended Validation SSL CA
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
 1 s:/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=Terms of use at https://www.verisign.com/rpa (c)06/CN=VeriSign Class 3 Extended Validation SSL CA
   i:/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=(c) 2006 VeriSign, Inc. - For authorized use only/CN=VeriSign Class 3 Public Primary Certification Authority - G5
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
---
Server certificate
subject=/1.3.6.1.4.1.311.60.2.1.3=US/1.3.6.1.4.1.311.60.2.1.2=Delaware/2.5.4.15=Private Organization/serialNumber=4337446/C=US/postalCode=94107/ST=California/L=San Francisco/streetAddress=795 Folsom St, Suite 600/O=Twitter, Inc./OU=Twitter Operations/CN=twitter.com
issuer=/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=Terms of use at https://www.verisign.com/rpa (c)06/CN=VeriSign Class 3 Extended Validation SSL CA
---
No client certificate CA names sent
---
SSL handshake has read 3338 bytes and written 435 bytes
---
New, TLSv1/SSLv3, Cipher is RC4-SHA
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
SSL-Session:
    Protocol  : TLSv1
    Cipher    : RC4-SHA
    Session-ID: 6FDCD1481628FC839F16FD0AB956CA824BA1CBA68F17F58AA94CB0AFB9E1DE83
    Session-ID-ctx:
    Master-Key: A6E88340BBFE03D628B62103B4EF41551025DEC50408AF2B7728A8C581C0BF0ABE044D10B0EE93192C7BD58896EBA0E4
    Key-Arg   : None
    Krb5 Principal: None
    Start Time: 1324523394
    Timeout   : 300 (sec)
    Verify return code: 0 (ok)
---
DONE

証明書の期限が切れてると下記のような表示が出ます。お目にかからないように注意しましょう

1

Verify return code: 10 (Certificate has expired)

ポート番号を変えれば、POPSやSMTPSで利用されてる証明書の確認も出来ます

  • HTTPS 443
  • POP over SSL 995
  • SMTP over SSL 465
  • IMAPS 993

参考サイト

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