ecdh.getPublicKey()

ecdh.getPublicKey([encoding[, format]])

Returns the EC Diffie-Hellman public key in the specified encoding and format.

The format argument specifies point encoding and can be 'compressed', 'uncompressed', or 'hybrid'. If format is not specified the point will be returned in 'uncompressed' format.

The encoding argument can be 'binary', 'hex', or 'base64'. If encoding is specified, a string is returned; otherwise a Buffer is returned.