% tpm2_ecdhkeygen(1) tpm2-tools | General Commands Manual

NAME

tpm2_ecdhkeygen(1) - Creates an ephemeral key and uses it to generate the shared secret value using the parameters from a ECC public key.

SYNOPSIS

tpm2_ecdhkeygen [OPTIONS]

DESCRIPTION

tpm2_ecdhkeygen(1) - Creates an ephemeral key and uses it to generate the shared secret value using the parameters from a ECC public key.

OPTIONS

  • -c, --context=FILE:

    Context object pointing to ECC public key. Either a file or a handle number. See section "Context Object Format".

  • -u, --public=FILE:

    Output ECC point Q.

  • -o, --output=FILE

    Specify file path to save the calculated ecdh secret or Z point.

References

algorithm specifiers details the options for specifying cryptographic algorithms ALGORITHM.

common options collection of common options that provide information many users may expect.

common tcti options collection of options used to configure the various known TCTI modules.

EXAMPLES

tpm2_createprimary -C o -c prim.ctx -Q

tpm2_create -C prim.ctx -c key.ctx -u key.pub -r key.priv -G ecc256:ecdaa

tpm2_ecdhkeygen -u ecdh.pub -o ecdh.priv -c key.ctx

returns

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