Key passphrase longer than 31 chars give 'No PIN given' error

Description of problem:

When creating key, if password is longer than 31 characters, certtool gives enigmatic No PIN given. error and exit with 1.

Also if --template or --password option is used certtool exit with No PIN given. error even for short passwords.

Version of gnutls used:

3.6.7

Distributor of gnutls (e.g., Ubuntu, Fedora, RHEL)

Debian 10

How reproducible:

Steps to Reproduce:

• certtool --pkcs8 --generate-privkey --outfile test.key
• certtool --pkcs8 --generate-self-signed --load-privkey test.key --outfile test.cert
• Now type password longer than 31 chars.

Actual results:

No PIN given. error.

Expected results:

Prompt for cert details.