I am getting extra space in enddate
output of this command:
$ export IP=google.com; nc -z -w 3 $IP 443 && (echo | openssl s_client - connect $IP:443 2>/dev/null | openssl x509 -noout -enddate) Connection to google.com port 443 [tcp/https] succeeded! notAfter=Apr 4 09:40:00 2018 GMT
Note two spaces between Apr and 4 in notAfter= line.
That is the case for both versions I have on laptop and on Linux server:
$ openssl version LibreSSL 2.2.7 $ openssl version OpenSSL 1.0.1f 6 Jan 2014
Is that bug? I will try to report in https://github.com/openssl/openssl/issues
Here we go:
1 Answers
Answers 1
This is intentional behavior from ASN1_TIME_print(), to use a fixed number of characters for the day representation. If the day number is less than 10, it still takes up two columns, with the first one being filled as a space. This is friendly to automated tooling parsers even if it is a little jarring for the human eye. I don't think it's appropriate to change ASN1_TIME_print()'s behavior because it is used in more places than just this.
https://github.com/openssl/openssl/issues/5107#issuecomment-358746180
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