Hello,I was testing the encryption and decryption with "pure" GnuPG and Gpg4win to compare the speed of them. What I also wanted to find out it how long it takes to en-/decrypt larger files.
Some details of the environment for the test: * Windows 10 * Gpg4win 4.0.3 * CPU: Intel i5-6500 @3,20 GHz * RAM: 16 GB * Storage: SSDTo test the speed I created files of different sizes with a Python script where I used the method os.urandom() to fill the files. GnuPG was running in the PowerShell and I measured the time by using the command "Measure-Command". To measure the time that Gpg4win needed I used a stopwatch.
First part of the test was the encryption of the files. To test GnuPG I used the command "gpg -r test --encrypt ./test_file". To encrypt with Gpg4win I used the entry "Encrypt" of the GpgEX context menu in the file explorer.
Results of encryption: Size | GnuPG | Gpg4win 1GB | 38 sec. | 1 min. 8 sec. 1GB | 37 sec. | 1 min. 7 sec. 2GB | 1 min. 14 sec. | 2 min. 15 sec. 2GB | 1 min. 14 sec. | 2 min. 14 sec. 5GB | 3 min. 10 sec. | 6 min. 10 sec. 5GB | 3 min. 6 sec. | 5 min. 34 sec. 10GB | 6 min. 28 sec. | 11 min. 21 sec. 10GB | 6 min. 21 sec. | 11 min. 6 sec.To decrypt the files I used the entry "Decrypt" of the GpgEX context menu in the file explorer for Gpg4win and for GnuPG I used the command "gpg --output test_file --decrypt test_file.gpg".
Results of decryption: Size | GnuPG | Gpg4win 1GB | 3 sec. | 36 sec. 1GB | 3 sec. | 34 sec. 2GB | 10 sec. | 1 min. 13 sec. 2GB | 7 sec. | 1 min. 12 sec. 5GB | 22 sec. | 3 min. 1 sec. 5GB | 19 sec. | 3 min. 2 sec. 10GB | 1 min. 3 sec. | 5 min. 52 sec. 10GB | 1 min. 7 sec. | 6 min. 5 sec.One insight of this test is that Gpg4win needs around two times longer for encryption. For decryption the difference is much bigger.
When I was testing the decryption I also tried "gpg --decrypt test_file.gpg" (without output file) with the 10 GB file and it took 8 minutes and 47 seconds. I was wondering why it took longer when GnuPG didn't need to create an output file.
Did someone of you also try to en-/decrypt larger files? Maybe even files that are larger than 1 TB? It would be really nice to know how long GnuPG and Gpg4win are busy with such large files.
With regards, Christoph -- Christoph Klassen | https://www.intevation.de/ Intevation GmbH, Neuer Graben 17, 49074 Osnabrück | AG Osnabrück, HRB 18998 Geschäftsführer: Frank Koormann, Bernhard Reiter
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