Signing

In the process of messaging with a digital signature;

• The hash value of the message is calculated,
• The hash value is signed using the private key,
• The message, digital signature, and digital certificate are combined to create a signed data packet, then sent to the recipient.

In the process of verifying a message that comes with a digital signature;

• The digital certificate belonging to the entity that performed the signing is extracted from the signed data packet and its validity checks,
• After confirming the validity of the digital certificate, verifies that it was issued by a trusted root, 
• The Digital Signature data is then validated using the public key,
• Following the verification of the Digital Signature, the obtained authenticated hash value is compared with the summary of the message,
• If these hash values match, the signature is considered verified.