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Full Discussion: secure file transfer with public key
Top Forums UNIX for Advanced & Expert Users secure file transfer with public key Post 302273755 by prvnrk on Monday 5th of January 2009 05:28:23 PM
Old 01-05-2009
Hi Perderabo,

Thanks for the response.

The other-end party (not FTP) insisting for encrypted files, Sorry for my bad english.

I did the below (unfortunately before i saw your reply) and uploaded files.
  1. downloaded and installed all required packages from sunfreeware
  2. "/usr/local/bin/gpg --import" (without creating my own keys) but imported their pub successfully
  3. "gpg --list-keys" shows correct output (there's no e-mail associated with but just UID)
  4. gpg --yes -eq -r "their-UID" -o encrypted_file.pgp file_to_encrypt

It encrypts but gives warning as below

Code:
++++++++

gpg: 268C2A61: There is no assurance this key belongs to the named user

 <pub key info>

It is NOT certain that the key belongs to the person named
in the user ID.  If you *really* know what you are doing,
you may answer the next question with yes.

Use this key anyway? (y/N) y

++++++++

I uploaded the encrypted files

My doubts:
  1. is it really required to create own-keys?
  2. how to avoid this above warning? (perhaps, by creating own keys and sign their pub keys?)

I noticed few "pgp" in your solution and I assume mistyped and should be "gpg". am I correct?

thanks for the help,
Prvn
Last edited by rbatte1; 12-02-2016 at 07:17 AM..
 

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LEARN ABOUT LINUX

gpg-zip

GPG-ZIP(1)						      General Commands Manual							GPG-ZIP(1)

NAME

       gpg-zip - encrypt or sign files into an archive

SYNOPSIS

       gpg-zip [OPTIONS] filename1 [filename2, ...]  directory1 [directory2, ...]

DESCRIPTION

       This manual page documents briefly the gpg-zip command.

       gpg-zip encrypts or signs files into an archive. It is an gpg-ized tar using the same format as PGP's PGP Zip.

OPTIONS

       -e, --encrypt
	      Encrypt data. This option may be combined with --symmetric (for output that may be decrypted via a secret key or a passphrase).

       -d, --decrypt
	      Decrypt data.

       -c, --symmetric
	      Encrypt  with  a	symmetric  cipher  using  a  passphrase.   The	default symmetric cipher used is CAST5, but may be chosen with the
	      --cipher-algo option to gpg(1).

       -s, --sign
	      Make a signature. See gpg(1).

       -r, --recipient USER
	      Encrypt for user id USER. See gpg(1).

       -u, --local-user USER
	      Use USER as the key to sign with. See gpg(1).

       --list-archive
	      List the contents of the specified archive.

       -o, --output FILE"
	      Write output to specified file FILE.

       --gpg GPG
	      Use the specified command instead of gpg.

       --gpg-args ARGS
	      Pass the specified options to gpg(1).

       --tar TAR
	      Use the specified command instead of tar.

       --tar-args ARGS
	      Pass the specified options to tar(1).

       -h, --help
	      Output a short usage information.

       --version
	      Output the program version.

DIAGNOSTICS

       The program returns 0 if everything was fine, 1 otherwise.

EXAMPLES

       Encrypt the contents of directory mydocs for user Bob to file test1:

	      gpg-zip --encrypt --output test1 --gpg-args  -r Bob"" mydocs

       List the contents of archive test1:

	      gpg-zip --list-archive test1

SEE ALSO

       gpg(1), tar(1)

AUTHOR

       Copyright (C) 2005 Free Software Foundation, Inc. Please report bugs to <bug-gnupg@gnu.org>.

       This manpage was written by Colin Tuckley <colin@tuckley.org> and Daniel Leidert <daniel.leidert@wgdd.de> for the Debian distribution  (but
       may be used by others).

								   November 2006							GPG-ZIP(1)
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