gpg: Add unfinished code for --export-secret-ssh-key.

* g10/gpg.c (exportSecretSshKey): New.
(opts): Add --export-secret-ssh-key.
(main): Implement option.
* g10/export.c (do_export_stream): Factor keywrap key code out to ...
(get_keywrap_key): new.
(mb_write_uint32, mb_write_uint8)
(mb_write_data, mb_write_cstring)
(mb_write_string, mb_write_mpi): New.
(receive_raw_seckey_from_agent): New.
(export_secret_ssh_key): New.
--

Due to time constraints the code is not yet ready.

1 files changed, 14 insertions, 0 deletions

diff --git a/g10/gpg.c b/g10/gpg.c
index 00dbf5283..8c1aa96d4 100644
--- a/g10/gpg.c
+++ b/g10/gpg.c
@@ -158,6 +158,7 @@ enum cmd_and_opt_values
     aExportSecret,
     aExportSecretSub,
     aExportSshKey,
+    aExportSecretSshKey,
     aCheckKeys,
     aGenRevoke,
     aDesigRevoke,
@@ -527,6 +528,7 @@ static gpgrt_opt_t opts[] = {
   ARGPARSE_c (aExportSecret, "export-secret-keys" , "@" ),
   ARGPARSE_c (aExportSecretSub, "export-secret-subkeys" , "@" ),
   ARGPARSE_c (aExportSshKey, "export-ssh-key", "@" ),
+  ARGPARSE_c (aExportSecretSshKey, "export-secret-ssh-key", "@" ),
   ARGPARSE_c (aImport, "import", N_("import/merge keys")),
   ARGPARSE_c (aFastImport, "fast-import", "@"),
 #ifdef ENABLE_CARD_SUPPORT
@@ -2676,6 +2678,7 @@ main (int argc, char **argv)
 	  case aExportSecret:
 	  case aExportSecretSub:
 	  case aExportSshKey:
+	  case aExportSecretSshKey:
 	  case aSym:
 	  case aClearsign:
 	  case aGenRevoke:
@@ -4893,6 +4896,17 @@ main (int argc, char **argv)
           }
 	break;
 
+      case aExportSecretSshKey:
+        if (argc != 1)
+          wrong_args ("--export-secret-ssh-key <user-id>");
+        rc = export_secret_ssh_key (ctrl, argv[0]);
+        if (rc)
+          {
+            write_status_failure ("export-ssh-key", rc);
+            log_error (_("export as ssh key failed: %s\n"), gpg_strerror (rc));
+          }
+	break;
+
      case aSearchKeys:
 	sl = NULL;
 	for (; argc; argc--, argv++)