[1] [CITE@en[OpenSSL]]
( ([[OpenSSL Foundation, Inc.]]著, [TIME[2016-05-29 00:06:38 +09:00]]))
<https://www.openssl.org/docs/manmaster/apps/ocsp.html>


[20] [CITE[Format of file index.txt database of a CA - Google グループ]]
( ([TIME[2016-05-28 22:35:40 +09:00]]))
<https://groups.google.com/forum/#!topic/mailing.openssl.users/gMRbePiuwV0>

[FIG(quote)[
[FIGCAPTION[
[2] [CITE[Format of file index.txt database of a CA - Google グループ]]
( ([TIME[2016-05-29 00:07:40 +09:00]]))
<https://groups.google.com/forum/#!topic/mailing.openssl.users/gMRbePiuwV0>
]FIGCAPTION]

> The index.txt file is an ascii file consisting of 6 (not 4) tab-separated 
> fields.  Some of those fields may be empty and might appear not to exist at 
> all.
> The 6 fields are:
> 0)  Entry type.  May be "V" (valid), "R" (revoked) or "E" (expired).
>     Note that an expired may have the type "V" because the type has
>     not been updated.  'openssl ca updatedb' does such an update.
> 1)  Expiration datetime.
> 2)  Revokation datetime.  This is set for any entry of the type "R".
> 3)  Serial number.
> 4)  File name of the certificate.  This doesn't seem to be used,
>     ever, so it's always "unknown".
> 5)  Certificate subject name.

]FIG]

[3] 最終行であっても、行末の [CODE[0x0A]] は必須です。