In that case the key agreement does not perform authentication of any party as the public key cannot be trusted by the other party authentication is performed separately. When performing ephemeral-ephemeral key agreement a key pair is regenerated by each party. The base point is part of the domain parameters agreed upon by client and server during the handshake and is not expected to change for ECDH. The public keys are part of the key pair generation by each one of the parties, usually denoted $\operatorname$ function, namely by multiplying the private key value with the base point $G$.
Is the word "public key" being loosely used? Are there multiple public keys?Īs already indicated in the other answer $A$ and $B$ in the video are the public keys of Alice and Bob. Openssl ec -in ecc_private.pem -pubout -out ecc_public.pem Also, there is openssl functionality for creating ECC public keys: If this is the case, then what is the purpose of ever generating an ECC public key? For a project I am working on, it is necessary to generate a public key to be placed in a certificate signing request to connect with AWS.
#Public key private key generator generator
Because the Generator point changes for each handshake, the public key must not be generator beforehand.
The public keys are the Generator point "times" the private key of each party. In the video at and the StackOverflow Q&A Basic explanation of Elliptic Curve Cryptography?, it is stated that the public key is generated when the key exchange takes place.
I have been learning about the fundementals of ECC and I'm a bit confused on this point: What makes up the public key in an ECC key exchange, and when is this public key generated?
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