Intel® Integrated Performance Primitives
Community support and discussions relating to developing high-performance vision, signal, security, and storage applications.
Announcements
Welcome to the Intel Community. If you get an answer you like, please mark it as an Accepted Solution to help others. Thank you!
6594 Discussions

Elliptic Curve Digital Signature: [message < G.ord]

AArya2
New Contributor I
81 Views

When using ippsSignDSA, does the developer have to feed a message smaller than the order of the generator or does the function itself compute the modulus in case it is not?

0 Kudos
2 Replies
Zhen_Z_Intel
Employee
81 Views

Dear customer,

The size of input message could be large than or equal to order of generator, then you could call Modular reduction function to padding 0 before message. But if you set message less than generator, how would you align with key pair?

Best regards,
Fiona

AArya2
New Contributor I
81 Views

Dear Fiona,

Thank you for your response. I don't mean the bit size of the message, but its numerical magnitude.

Reply