Generates SHA256 hashes for files and signs the hashes with your GPG key.
Inspired by the Fedora spins checksums
$ go get github.com/georgboe/checksum
Run checksum with the filenames you want to be checksummed. A file CHECKSUM will be created with the clearsigned output.
$ checksum ubuntu-16.04-beta2-desktop-amd64.iso
Enter password:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
SHA256 (ubuntu-16.04-beta2-desktop-amd64.iso) = 643aa06bcb025c31aaf111247ff2d2608ce1ecaa1d3b1178929376b38f650be4
-----BEGIN PGP SIGNATURE-----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=Ep6w
-----END PGP SIGNATURE-----
MIT License
Copyright (c) 2016 Georg Bøe
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.