opensslで作成したCSR（証明書署名要求）の内容を確認する

opensslで作成したCSR（証明書署名要求）の内容を確認するを紹介します。

書式は以下の通りです。

openssl req -in CSRファイル名 -text

1	openssl req -in CSRファイル名 -text

「test.csr」の中身を確認してみましょう。

[root@kamatora ~]# openssl req -in test.csr -text
Certificate Request:
    Data:
        Version: 0 (0x0)
<span style="color: #ff0000;">        Subject: C=JP, ST=Tokyo, L=xx, O=kamotora, CN=kamotora.net/emailAddress=xxx@xxxxx
</span>        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
                Public-Key: (1024 bit)
                Modulus:
                    00:b5:08:0c:9b:f9:92:c7:2f:85:1c:da:7d:d3:4b:
                    dd:f7:ec:73:d5:b7:6f:c4:e9:11:12:c2:1d:f0:80:
                    1c:16:1e:72:4a:35:3b:56:3b:4b:29:5f:08:de:e3:
                    91:9e:95:eb:81:06:8e:02:ff:0e:a2:8b:cc:b7:99:
                    50:49:30:f1:48:e7:a7:c7:3b:6e:53:c5:cc:44:3d:
                    d8:55:fb:6f:8d:a2:34:0c:72:e2:d5:cb:f4:95:87:
                    cd:98:93:0f:27:c5:78:18:c5:dc:e6:bb:df:a4:fe:
                    e1:0d:c4:73:ba:fc:1d:12:31:31:37:3a:cc:ae:4c:
                    57:01:b7:78:8e:5f:72:af:d1
                Exponent: 65537 (0x10001)
        Attributes:
            a0:00
    Signature Algorithm: sha1WithRSAEncryption
         a1:73:5c:4c:85:f6:ed:8e:3e:a9:df:af:68:fc:c5:d4:d4:68:
         1a:ba:93:39:42:eb:c0:cf:f7:e7:58:8d:49:8a:c2:88:4f:2b:
         ba:0c:a8:a1:4e:4c:27:52:c3:49:f2:c2:10:0d:aa:ed:6a:a7:
         ea:a7:ef:59:79:bc:6e:4e:65:45:b7:96:8b:da:23:11:3a:77:
         29:5f:73:12:7e:04:0c:71:fa:84:77:37:62:bd:ef:e2:8f:eb:
         d9:c2:18:57:f0:57:dc:ef:7e:51:ed:f1:0c:da:3f:90:d2:f7:
         93:68:ca:a6:0a:01:ea:5b:30:cc:5a:c3:9e:8c:f4:6d:88:72:
         ce:65
-----BEGIN CERTIFICATE REQUEST-----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-----END CERTIFICATE REQUEST-----
[root@kamatora ~]#

[root@kamatora ~]# openssl req -in test.csr -text

Certificate Request:

Data:

Version: 0 (0x0)

<span style="color: #ff0000;"> Subject: C=JP, ST=Tokyo, L=xx, O=kamotora, CN=kamotora.net/emailAddress=xxx@xxxxx

</span> Subject Public Key Info:

Public Key Algorithm: rsaEncryption

Public-Key: (1024 bit)

Modulus:

00:b5:08:0c:9b:f9:92:c7:2f:85:1c:da:7d:d3:4b:

dd:f7:ec:73:d5:b7:6f:c4:e9:11:12:c2:1d:f0:80:

1c:16:1e:72:4a:35:3b:56:3b:4b:29:5f:08:de:e3:

91:9e:95:eb:81:06:8e:02:ff:0e:a2:8b:cc:b7:99:

50:49:30:f1:48:e7:a7:c7:3b:6e:53:c5:cc:44:3d:

d8:55:fb:6f:8d:a2:34:0c:72:e2:d5:cb:f4:95:87:

cd:98:93:0f:27:c5:78:18:c5:dc:e6:bb:df:a4:fe:

e1:0d:c4:73:ba:fc:1d:12:31:31:37:3a:cc:ae:4c:

57:01:b7:78:8e:5f:72:af:d1

Exponent: 65537 (0x10001)

Attributes:

a0:00

Signature Algorithm: sha1WithRSAEncryption

a1:73:5c:4c:85:f6:ed:8e:3e:a9:df:af:68:fc:c5:d4:d4:68:

1a:ba:93:39:42:eb:c0:cf:f7:e7:58:8d:49:8a:c2:88:4f:2b:

ba:0c:a8:a1:4e:4c:27:52:c3:49:f2:c2:10:0d:aa:ed:6a:a7:

ea:a7:ef:59:79:bc:6e:4e:65:45:b7:96:8b:da:23:11:3a:77:

29:5f:73:12:7e:04:0c:71:fa:84:77:37:62:bd:ef:e2:8f:eb:

d9:c2:18:57:f0:57:dc:ef:7e:51:ed:f1:0c:da:3f:90:d2:f7:

93:68:ca:a6:0a:01:ea:5b:30:cc:5a:c3:9e:8c:f4:6d:88:72:

ce:65

-----BEGIN CERTIFICATE REQUEST-----

MIIBrjCCARcCAQAwbjELMAkGA1UEBhMCSlAxDjAMBgNVBAgMBVRva3lvMQswCQYD

VQQHDAJ4eDERMA8GA1UECgwIa2Ftb3RvcmExFTATBgNVBAMMDGthbW90b3JhLm5l

dDEYMBYGCSqGSIb3DQEJARYJeHh4QHh4eHh4MIGfMA0GCSqGSIb3DQEBAQUAA4GN

ADCBiQKBgQC1CAyb+ZLHL4Uc2n3TS9337HPVt2/E6RESwh3wgBwWHnJKNTtWO0sp

Xwje45GeleuBBo4C/w6ii8y3mVBJMPFI56fHO25TxcxEPdhV+2+NojQMcuLVy/SV

h82Ykw8nxXgYxdzmu9+k/uENxHO6/B0SMTE3OsyuTFcBt3iOX3Kv0QIDAQABoAAw

DQYJKoZIhvcNAQEFBQADgYEAoXNcTIX27Y4+qd+vaPzF1NRoGrqTOULrwM/351iN

SYrCiE8rugyooU5MJ1LDSfLCEA2q7Wqn6qfvWXm8bk5lRbeWi9ojETp3KV9zEn4E

DHH6hHc3Yr3v4o/r2cIYV/BX3O9+Ue3xDNo/kNL3k2jKpgoB6lswzFrDnoz0bYhy

zmU=

-----END CERTIFICATE REQUEST-----

[root@kamatora ~]#

作成時に入力した内容が以下のように表示されます。

Subject: C=JP, ST=Tokyo, L=xx, O=kamotora, CN=kamotora.net/emailAddress=xxx@xxxxx

1	Subject: C=JP, ST=Tokyo, L=xx, O=kamotora, CN=kamotora.net/emailAddress=xxx@xxxxx