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I can't find a single example of how to do this. I have a PGP encrypted XLS file and a PGP key. Here's is my code that returns an empty string:
require 'rubygems'
require 'gpgme'
def passfunc(obj, uid_hint, passphrase_info, prev_was_bad, fd)
io = IO.for_fd(fd, 'w')
io.puts "PASSPHRASE"
io.flush
end
encrypted_data = GPGME::Data.new(File.open("file.xls.pgp"))
key = GPGME::Data.new(File.open("key.txt"))
ctx = GPGME::Ctx.new :passphrase_callback => method(:passfunc)
ctx.import_keys key
decrypted = ctx.decrypt encrypted_data
puts decrypted.read
I'm able to decrypt this file in a program called GNU Privacy Assistant on Windows using the same key. Any help is appreciated.
383
GPG can open and decrypt files encrypted by PGP or Open PGP, meaning it works well with other products. It provides an interface for users to easily encrypt their files.
PGP Encryption secures data transmission over the internet and only the person with whom you have shared the keys is able to decrypt the data and use it. This protects your data so that it cannot be misused, even if someone has the file. Without keys, no one can decrypt the file and access the data.
People Are Freaking Out That PGP Is 'Broken'—But You Shouldn't Be Using It Anyway. Hackers that can intercept your encrypted emails, or steal your emails from your computer or a server, may be able to decrypt them taking advantage of new vulnerabilities found in the way some email clients treat HTML.
Daiki Ueno, the developer of Ruby gpgme reached out to me on GitHub:
adding
decrypted.seek(0)after the linedecrypted = ctx.decrypt encrypted_dataseems to solve the problem
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