Automatic message assembly during a cryptographic operation

A system, comprising:

• a cryptographic accelerator to:
• store an additional authenticated data (AAD) portion of a message and a plain text portion of the message in an input buffer;
• generate cipher text using the plain text portion of the message,
• generate a message authentication code (MAC) using the AAD portion and either the plain text portion or the cipher text,
• create an assembled message in an output buffer of the cryptographic accelerator, the assembled message being created based on a configuration and including at least the cipher text, and
• provide the assembled message for transmission;
• and
• a communication component to:
• receive the assembled message, and
• transmit the assembled message.

A method, comprising:

• storing an additional authenticated data (AAD) portion of a message and a plain text portion of the message in an input buffer;
• generating cipher text using the plain text portion of the message;
• generating a message authentication code (MAC) using the AAD portion and either the plain text portion or the cipher text;
• assembling a secure message in an output buffer of a cryptographic accelerator, the secure message being assembled based on a configuration associated with a communication protocol to be used to transmit the secure message,
• wherein assembling the secure message in the output buffer includes providing at least the cipher text to the output buffer;
• and
• providing the secure message for transmission.

A cryptographic accelerator, comprising:

• an input buffer to store an additional authenticated data (AAD) portion of a message and a plain text portion of the message;
• a cryptographic engine to:
• generate a message authentication code (MAC) using the AAD portion and the plain text portion,
• determine a configuration for creating an assembled message in an output buffer of the cryptographic accelerator, and
• provide the AAD portion, the plain text portion, and the MAC to create the assembled message in the output buffer according to the configuration;
• and
• the output buffer to provide the assembled message.