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/*
* Make a copy of an existing ssh_key object, e.g. to survive after
* the original is freed.
*/
#include "misc.h"
#include "ssh.h"
ssh_key *ssh_key_clone(ssh_key *key)
{
/*
* To avoid having to add a special method in the vtable API, we
* clone by round-tripping through public and private blobs.
*/
strbuf *pub = strbuf_new_nm();
ssh_key_public_blob(key, BinarySink_UPCAST(pub));
ssh_key *copy;
if (ssh_key_has_private(key)) {
strbuf *priv = strbuf_new_nm();
ssh_key_private_blob(key, BinarySink_UPCAST(priv));
copy = ssh_key_new_priv(ssh_key_alg(key), ptrlen_from_strbuf(pub),
ptrlen_from_strbuf(priv));
strbuf_free(priv);
} else {
copy = ssh_key_new_pub(ssh_key_alg(key), ptrlen_from_strbuf(pub));
}
strbuf_free(pub);
return copy;
}
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