==== Konverzia z GPG na PKCS#12 ====

  * zrusenie hesla pre GPG kluc
<code>
$ gpg --edit-key KEY_ID
> passwd
> save
</code>

  * export sukromneho GPG kluca do OpenSSH/OpenSSL formatu
<code>
$ gpg --export-secret-keys KEY_ID | openpgp2ssh KEY_ID > id_rsa
</code>

  * vygenerovanie CRS certifikatu - dolezite je vyplnit parameter **Email Address**
<code>
$ openssl req -new -key id_rsa -out id_rsa.csr
</code>

  * vygenerovanie certifikatu
<code>
$ openssl x509 -req -days 3650 -in id_rsa.csr -signkey id_rsa -out id_rsa.crt
</code>

  * export certifikatu do formatu PKCS#12
<code>
$ openssl pkcs12 -export -in id_rsa.crt -inkey id_rsa -out id_rsa.p12
</code>

  * export certifikatu z formatu P12/PFX do PEM formatu
<code>
$ openssl pkcs12 -in certificate.pfx -out certificate.pem -clcerts -nodes
</code>