sign I2PControl certificate with sha256

[pobregat0]

On OpenSSL 3 the self signed certificate is signed with sha1, which is refused
at the default security level, so I2PControl never gets a working SSL context:

I2PControl: Failed to load ceritifcate: ca md too weak (SSL routines). Recreating
I2PControl: Can't load certificates
I2PControl: Handshake error: no shared cipher (SSL routines)

With sha256 the service starts and answers requests. Checked on Debian 13,
OpenSSL 3.5.6, and on a second machine with the same version.

[wipedlifepotato]

	X509_sign (x509, pkey, EVP_sha256 ()); // sha1 is rejected as too weak since OpenSSL 3

А это, оно в java sha1?

А оно локальное

[wipedlifepotato]

норм

[wipedlifepotato]

кк

[orignal]

It might be an issue with apps like itoopie

[pobregat0]

Wrong fix: the digest is not the cause. The certificate has an empty subject, so OpenSSL 3 does not take it for self signed and refuses it as a weak CA. A self signed sha1 certificate loads fine on the same machine. Replaced by #2487, which sets the subject and leaves sha1 alone.