ec_dh | R Documentation |

Key agreement is one-step method of creating a shared secret between two peers. Both peers can independently derive the joined secret by combining his or her private key with the public key from the peer.

ec_dh(key = my_key(), peerkey, password = askpass)

`key` |
your own private key |

`peerkey` |
the public key from your peer |

`password` |
passed to read_key for reading protected private keys |

Currently only Elliptic Curve Diffie Hellman (ECDH) is implemented.

https://wiki.openssl.org/index.php/EVP_Key_Agreement, https://wiki.openssl.org/index.php/Elliptic_Curve_Diffie_Hellman

## Not run: # Need two EC keypairs from the same curve alice_key <- ec_keygen("P-521") bob_key <- ec_keygen("P-521") # Derive public keys alice_pub <- as.list(alice_key)$pubkey bob_pub <- as.list(bob_key)$pubkey # Both peers can derive the (same) shared secret via each other's pubkey ec_dh(alice_key, bob_pub) ec_dh(bob_key, alice_pub) ## End(Not run)

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