Generates a compliant ECDSA P-256 private key and self-signed certificate with the exact Common Name (CN) and X.500 attributes required by BankEasy:
CN=<partnerCode>.sign.sandbox.partners.BankEasy.ng
X-Partner-Certificate-Fingerprint
-----BEGIN PRIVATE KEY----- MIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQg9mBJXAWLMFeAjROG IqGDBkTu91swgSEYhFRISukoeNuhRANCAAQOH5Du47pSnNMphmFUJoDoF... -----END PRIVATE KEY-----