tests/sslcerts/README

templates: add filter to reverse list

The filter supports only lists because for lists, it’s straightforward to
implement. Reversing text doesn’t seem very useful and is hard to implement.
Reversing the bytes would break multi-bytes encodings. Reversing the code
points would break characters consisting of multiple code points. Reversing
graphemes is non-trivial without using a library not included in the standard
library.

Generate a private key (priv.pem):

  $ openssl genrsa -out priv.pem 2048

Generate 2 self-signed certificates from this key (pub.pem, pub-other.pem):

  $ openssl req -new -x509 -key priv.pem -nodes -sha256 -days 9000 \
    -out pub.pem -batch -subj '/CN=localhost/emailAddress=hg@localhost/'
  $ openssl req -new -x509 -key priv.pem -nodes -sha256 -days 9000 \
    -out pub-other.pem -batch -subj '/CN=localhost/emailAddress=hg@localhost/'

Now generate an expired certificate by turning back the system time:

  $ faketime 2016-01-01T00:00:00Z \
    openssl req -new -x509 -key priv.pem -nodes -sha256 -days 1 \
    -out pub-expired.pem -batch -subj '/CN=localhost/emailAddress=hg@localhost/'

Generate a certificate not yet active by advancing the system time:

  $ faketime 2030-01-1T00:00:00Z \
    openssl req -new -x509 -key priv.pem -nodes -sha256 -days 1 \
    -out pub-not-yet.pem -batch -subj '/CN=localhost/emailAddress=hg@localhost/'

Generate a passphrase protected client certificate private key:

  $ openssl genrsa -aes256 -passout pass:1234 -out client-key.pem 2048

Create a copy of the private key without a passphrase:

  $ openssl rsa -in client-key.pem -passin pass:1234 -out client-key-decrypted.pem

Create a CSR and sign the key using the server keypair:

  $ printf '.\n.\n.\n.\n.\n.\nhg-client@localhost\n.\n.\n' | \
    openssl req -new -key client-key.pem -passin pass:1234 -out client-csr.pem
  $ openssl x509 -req -days 9000 -in client-csr.pem -CA pub.pem -CAkey priv.pem \
    -set_serial 01 -out client-cert.pem

When replacing the certificates, references to certificate fingerprints will
need to be updated in test files.

Fingerprints for certs can be obtained by running:

  $ openssl x509 -in pub.pem -noout -sha1 -fingerprint
  $ openssl x509 -in pub.pem -noout -sha256 -fingerprint