(export-public-ecdh ecdh-key) -> string
Given a private <ecdh-key>, produces the public, non-secret portion of that key. If the result is then handed to import-ecdh, the result of that will test true for ecdh-key? and ecdh-public-key?, but test false for ecdh-private-key?.
The string that is returned by export-public-ecdh should not be considered a "safe", or portable string. For storage and transmission purposes, wrapping it in base64-encode is recommended.
Examples:
>> (define Dp (export-public-ecdh Dq)) :: #f >> (ecdh-key? (import-ecdh Dp)) :: #t >> (ecdh-private-key? (import-ecdh Dp)) :: #f >> (ecdh-public-key? (import-ecdh Dp)) :: #t >> (define Cp (export-public-ecdh Cq)) :: #f