Note: the longer the key, the more secure the encryption will be. A key can be used to both encrypt and decrypt plaintext. A key is a mathematical algorithm for turning plaintext into seemingly random alphanumeric characters. In order to encrypt the plaintext into a cipher we need to use a technique that relies on the concept of a “key”.
#What is gpg suite password#
To prevent this devious person from being able to see the password we would need to encrypt the plaintext document into a cipher and to transfer the cipher instead of the plaintext, meaning if anyone was to interrupt your communication then they would get the cipher and it would be unreadable. But this isn’t very safe because you could have some devious person ‘sniffing’ your network traffic, picking up your communication and subsequently stealing the plaintext file containing the password you’d rather they not get access to. You could open an email (or chat program), attach the file and send it to Bob. Imagine you have a plaintext file which contains a password, and you want to share this file with someone else across the internet (let’s say this someone is our friend “Bob”). When a file is said to be plaintext it simply means that it’s unencrypted, whereas a cipher is a noun that refers to a plaintext that has been encrypted. It’s important to know what these mean before moving on, so let’s clarify this now: Throughout this post you’ll see me use words like “plaintext” and “cipher”. It’s taken me longer than I care to admit to really understand the things I’ll be discussing here (and even then I’ll likely have missed a lot of important nuances), and with that said: what am I planning on covering in this post? Well that would be…
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This post isn’t meant to be “this is how you do security”. Just skip until What is GPG? (in there are two sub sections about “OpenSSH”, “SSH Agent” and “OpenSSL”, just skip those until you get to the next “GPG” section and continue all the way from there) Introduction UPDATE: for those short on time, read the following Introduction, What are keys and how do they work? and then skip over the sections “Understanding PKI” and “OpenSSL vs OpenSSH” as these just go into more depth on the technical aspect of different encryption concepts.
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#What is gpg suite how to#