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+---
+title: How To Encrypt Your Own Documents Using gpg
+layout: post
+author: tait
+---
+
+If you have ever wanted to garuntee the utmost security of your emails and documents, then this is the guide for you!
+It should be noted that in some circles the tools used are more common than in others.
+These are the everyday tools of many privacy advocates and computer nerds.
+
+If you have never used Linux however, then the method of doing this will be rather unfamiliar.
+This tutorial will be done on an [Arch Linux](https://archlinux.org/) machine,
+but it should be the same on Ubuntu, Fedora, CentOS, Debian,
+OpenBSD, FreeBSD, MacOSX, etc.
+The only operating system that does not include these tools by default (or easily accessible) is Windows.
+
+*Let us...begin!*
+
+## Glossary
+
+* [**ASCII armour**](https://en.wikipedia.org/wiki/Binary-to-text_encoding#ASCII_armor) --- A way to encode **OpenPGP** documents so they are readable by humans. These files end in .asc
+* **(Open)PGP** --- An open standard for encoding pulbic keys and encrypted documents.
+* **GPG** --- GNUPrivacyGaurd is an implementation of **OpenPGP**. It is installed by default on most Linux distrobutions.
+
+## Step 0: Setup
+
+We will be using the utility `gpg` for this tutorial.
+
+The other thing to note: The character '$' (dollar sign) is usually not typed when shown in a command.
+It simply indicates that you do not need administrative privilages to run these commands.
+
+Test to see if you get this output in your terminal.
+
+
+$ gpg --version
+
+gpg (GnuPG) 2.2.20
+libgcrypt 1.8.5
+Copyright (C) 2020 Free Software Foundation, Inc.
+License GPLv3+: GNU GPL version 3 or later
+
+...
+
+
+If this is not successful look into how to install these tools on your system.
+
+## Step 1: Get/Create A Public Key!
+
+### Get Somebody Else's
+Step one is having somebody to send your encrypted message to. Maybe this is a friend, a journalist, or a whistleblower.
+
+To encrypt a document with somebody's public key, you need to first obtain it.
+My public key is available [at this link](/public-key.asc), and you can use it to send me encrypted stuff.
+
+If you are on a linux terminal, you can use the `curl` or `wget` command to download it.
+
+wget:
+
+
+### Make Your Own (optional)
+
+The following section is quite long,
+so if you don't want to create your own keypair,
+then feel free to skip to [Step #2](#step-2-import-public-key).
+
+If you want to encrypt your own documents,
+or you want others to be able to send you encrypted messages,
+then you can create your own public/private key pair.
+You can use these to encrypt your documents,
+and you can send our public key to others so that they can securely communicate with yourself.
+
+Run the following command in your terminal, and follow the steps I outline to get you started.
+
+
+$ gpg --full-gen-key
+
+
+This will produce the following dialog:
+
+
+gpg (GnuPG) 2.2.20; Copyright (C) 2020 Free Software Foundation, Inc.
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law.
+
+Please select what kind of key you want:
+ (1) RSA and RSA (default)
+ (2) DSA and Elgamal
+ (3) DSA (sign only)
+ (4) RSA (sign only)
+ (14) Existing key from card
+Your selection?
+
+
+Select the option `1`. You want two keys, both RSA.
+
+Next we will select the key size:
+
+RSA keys may be between 1024 and 4096 bits long.
+What keysize do you want? (2048)
+
+
+Type the number 2048.
+
+Next it will ask you how long you want the key to be valid.
+
+
+Requested keysize is 2048 bits
+Please specify how long the key should be valid.
+ 0 = key does not expire
+ <n> = key expires in n days
+ <n>w = key expires in n weeks
+ <n>m = key expires in n months
+ <n>y = key expires in n years
+Key is valid for? (0)
+
+
+Type the number 1. This will enable you time to test it,
+but it will make the key expire within 24 hours so that if you accidentally
+share your private key, or delete your VM and no longer have access to it, you will be fine.
+
+It will ask your if you are sure about the expiry date.
+
+
+Key expires at Tue Apr 7 02:24:23 2020 UTC
+Is this correct? (y/N)
+
+
+Type `y` to confirm your choice.
+
+Now `gpg` is going to ask you to create a user id to indetify this key.
+Use some test data for now.
+User input is in bold, feel free to follow along or to put your own test data in.
+
+Once you are more comfortable with the tools,
+then you can create a public/private keypair that you will keep for some time.
+
+
+GnuPG needs to construct a user ID to identify your key.
+
+Real name: Mr. Tester
+Email address: test@test.org
+Comment: for testing only
+You selected this USER-ID:
+ "Mr. Tester (for testing only) "
+
+Change (N)ame, (C)omment, (E)mail or (O)kay/(Q)uit? O
+
+
+It will then ask you for a password.
+If you are simply using this for test purposes,
+then you can feel free to set it to something like "test".
+When create a long-term use pulbic key make sure to make the password *very* secure.
+
+During the process of creating your key, `gpg` may warn you with this message:
+
+
+We need to generate a lot of random bytes. It is a good idea to perform
+some other action (type on the keyboard, move the mouse, utilize the
+disks) during the prime generation; this gives the random number
+generator a better chance to gain enough entropy.
+
+
+If this happens, feel free to smash your keyboard (lightly),
+watch a YouTube video on the machine,
+browse the web with [w3m](http://w3m.sourceforge.net/),
+etc. until the key is generated.
+
+You will know it is done when you see this message (or something similar):
+
+
+gpg: key EACCC490291EA7CE marked as ultimately trusted
+gpg: revocation certificate stored as '/home/tait/.config/gnupg/openpgp-revocs.d/FFA7D7525C6546983F1152D8EACCC490291EA7CE.rev'
+public and secret key created and signed.
+
+pub rsa2048 2020-04-06 [SC] [expires: 2020-04-07]
+ FFA7D7525C6546983F1152D8EACCC490291EA7CE
+ uid Mr. Tester (for testing only)
+ sub rsa2048 2020-04-06 [E] [expires: 2020-04-07]
+
+
+Tada! You have your own public/private keypair!
+
+Sharing a keypair that will expire soon is not a good idea,
+however, if you are ready, then you can use this command to generate a public key file to share with others.
+
+Feel free to substitute "Mr. Tester" for any other identifying part of your key.
+Remember that to use the email, you must enclose it in < and >.
+
+
+
+## Step 2: Import Public Key
+
+This list of keys that `gpg` keeps on tap so to speak, is called our "keyring".
+Your will need to import a new public key to encrypt files with `gpg`.
+
+If you already created your own public key, then this step is not necessary unless you want to also encrypt something for me :)
+
+
+
+
+ A keyring holding eight allen keys.
+
+
+
+To import a public key to use for encrypting files, use the `--import` option of `gpg`. Like so:
+
+
+$ gpg --import public-key.asc
+gpg: key 64FB4E386953BEAD: public key "Tait Hoyem " imported
+gpg: Total number processed: 1
+gpg: imported: 1
+
+
+Now that we have imported a public key, we can make a message to send!
+
+## Step 3: Have A Message To Encrypt
+
+We can make a new file which holds some important, secret data.
+Feel free to use a graphical editor if you have one, if not, `nano` works alright too.
+Feel free to encrypt this and send it to me to see if it works!
+
+
+ Rules Of A Good Life:
+
+ 1. Wash your hands!
+ 2. Work hard!
+ 3. Be firm.
+ 5. Have good friends!
+
+
+Save this file as something like `test-pgp.txt`, and we'll use that name later :)
+
+## Step 4: Encrypt A Message
+
+Now that we have a message to send and person to send to,
+all we have to do is encrypt this message and it'll be on its merry way!
+To do so, we must specify two new options to `gpg`.
+
+The first is `--recipient`.
+This tells `gpg` to encrypt using a certina public key that we have in our keyring.
+We can use the person's name, email address, or the key's uid.
+
+The second is `--encrypt`.
+Put the file name after this option.
+
+We will also specify the `--armour` option to use ASCII armoured files.
+
+### On With It!
+
+Ok, yes!
+Let's encrypt our document now.
+
+We will be using my name to identify the key.
+In the very strange case you have two keys in your keyring named after me, this will fail...
+But at that point I have other questions.
+
+This is the big one!
+
+
+
+## Step 5: Finale!
+
+Ladies and gentleman, we have done it!
+We have encrypted our very own document.
+
+Feel free to send it to [my email (tait@tait.tech)](mailto:tait@tait.tech).
+I am happy to verify if it worked.
+
+For more information on this subject, check out [gnugp.org's guide](https://www.gnupg.org/gph/en/manual/c14.html) on using GPG.
+They are the ones that make these tools available,
+and the [GNU Project](https://www.gnu.org/) has been instrumental in creating the open-source world as it exists today.
+
diff --git a/_includes/footer.html b/_includes/footer.html
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+
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+
+{% include footer.html %}
diff --git a/_posts/2020-04-02-rsa3.md b/_posts/2020-04-02-rsa3.md
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+---
+title: "How Asymetric Encryption Works"
+layout: post
+author: tait
+---
+In a few previous articles I have explained [why encryption may be important to you](/2020/01/26/rsa1.html) and [how the theory behind encryption works](/2020/02/19/rsa2.html). I did not yet explain the system of asymetric cryptography, however. That is what this article is for.
+
+Previously, we talked about how *symetric* encryption works. This is by having a shared key that both parties use to simultaniously encrypt, and decrypt the data. (See Ceasar Cipher for example).
+
+## Public-key, or Asymetric Encryption
+
+Asymetric encryption is based on the idea of having multiple keys instead of only one shared key.
+For example: instead of encrypting with one key, and decrypting with that same key (like our ROT ciphers we talked about previously), we can use one key to *encrypt* the information, and a different key to *decrypt* the information.
+
+
+
+
+ Alice sending her message to Bob using Bob's public key. Bob decrypts the message with his private key.
+
+
+
+In the picture above, see how Alice uses Bob's public key to encrypt some data,
+then sends it to Bob for him to decrypt with his private key?
+That is the essense of public-key encryption.
+
+The great thing about public-key encryption is that your public key is *public*! There is no need to be afraid of sending this everywhere!
+You can attach it at the end of all your emails, the end of your forum posts, [a link to it on your low-power webserver](/public-key.asc) (wink).
+There are even things called [keyservers](http://keys.gnupg.net/) that will save your public key on them for retrival in case somebody wants to verify your public key.
+
+Anything encrypted with your public key can only be decrypted with your private key.
+Provided you never, *NEVER* share your private key with anyone ever, we can assume that all messages sent to you encrypted with your public key will never be read by anyone else.
+
+Asymetric encryption, however, often contains four keys instead of two. Why is this?
+
+#### Verification of Author
+
+One interesting thing about keys pairs is that not only can the private key decrypt anything the public key encrypts,
+but the public key can decrypt anything the private key encrypts.
+
+Now why would one want to encrypt a message that can be decrypted by anyone?
+
+
+
+
+ Alice sending a message to bob which is 'signed' with her private key. This allows Bob to know only Alice could have sent it!
+
+
+ Note: Although the picture shows otherwise, the text is not sent in the plain. It is encrypted with Alice's private key.
+
+
+
+This is how you can verify that the person who says they wrote the message really did indeed write the message!
+If their private key was never shared with anyone else, then the message must have come from them!
+
+For maximum security, these methods are often layered.
+First, signing with the sender's private key,
+ensuring only they could have sent it---
+then encrypted with the recipient's pulbic key,
+making sure only the reciever can read it.
+
+Note that both sides must first have eachother's public keys to do this.
+This is easy if they communicate often, but when first contacting somebody,
+people will generally send their encrypted message along with the their own pulbic key attached in a seperate file.
+
+### What This Means
+
+Notice neither Alice nor Bob had to share any comprimsing information over the network?
+This is why public-key encryption is so powerful!
+
+Alice and Bob can both safely send their public keys in the open.
+They can even send them over the insecure HTTP, or FTP protocols.
+
+Whilst not sending any encryption-breaking messages,
+Alice and Bob now have a way to communicate securely.
+If you trust nothing and no one, this is your perfered method of security.
+
+
+Check out this [Computerphile video](https://www.youtube.com/watch?v=GSIDS_lvRv4) if you want the simplified explaination.
+
+### The Algorithms
+
+The two biggest "implementations" of public-key cryptography vary only in the mathamatical equations used to generate the numbers,
+and how the numbers are ["trapdoored"](https://en.wikipedia.org/wiki/Trapdoor_function) to decrypt if you have the correct key.
+
+I will discuss the differences in approach here.
+If you want to skip to the next article where I show you how to encrypt your own documents using RSA, see [this link](/2020/04/06/rsa4.html).
+
+### RSA
+
+The mathamatic center of the RSA system was developed over the course of a year or so.
+Three men were involved. Ron Rivest, Adi Shamir, and Leonard Aldeman.
+They worked as a kind of "team": Each idea by Rivest and Shamir were critisized by the mathamatician on their team: Mr. Aldeman.
+
+One night, after consuming
+["liberal quantities of Manischewitz wine"](https://www.math.uchicago.edu/~may/VIGRE/VIGRE2007/REUPapers/FINALAPP/Calderbank.pdf)
+Rivest had trouble sleeping.
+After taking long gazes into the abyss of his math textbook, he came up with an idea which would change cryptography forever.
+By the next morning, an academic mathamatical paper was nearly finished.
+He named it after himself and the two others that had been helping him along this whole time. *Rivest, Shamir, Aldeman*.
+
+Key sizes of RSA range from 1024-bit to 4096-bit.
+1024-bit keys are considered somewhat insecure.
+However,
+it should be noted that every bit doubles the complexity of the key,
+so 2048 is [2^1024](https://www.wolframalpha.com/input/?i=2%5E1024) times more complex than 1024.
+
+### Eliptic-Curve (EC)
+
+Eliptic-Curve (EC) is a family of algorithms that use the [Eliptic curve](https://en.wikipedia.org/wiki/Elliptic_curve) mathamatical structure to generate the numbers for the keys.
+EC can effectivly provide the security of an RSA key [one order of magnitude larger](https://www.youtube.com/watch?v=NF1pwjL9-DE) than an RSA key.
+
+
+
+
+ An eliptic curve structure.
+
+
+
+It's fast; it's secure! Perfect right?
+
+Of course not!
+
+One problem is that due to the smaller key size,
+it can more easily be broken by brute-force.
+This is why EC is mostly used for temporary communication (like HTTPS), not permenant communication (like having an encrypted email conversation with a journalist).
+
+The other problem is that a certain EC algrorithm called P-256 is suspected to be introduced with malice to National Institute of Standards and Technology (NIST)
+[by the NSA](https://www.schneier.com/essays/archives/2007/11/did_nsa_put_a_secret.html).
+Supposedly, the NSA is able to crack anything encrypted with this algorithm.
+I will let the experts argure about that.
+
+Other well-known EC algorithms that are more-or-less trusted as secure do exist though.
+The premeire one being Curve25519.
+The reference implementation of [this algrorithm](https://cr.yp.to/ecdh.html) is also [public-domain](https://fairuse.stanford.edu/overview/public-domain/welcome/),
+so it is easy for devlopers to work into their own applications without worrying about copywrite.
+
+## Conslusion
+
+In this article we went over some basic points:
+
+1. Public-key encryption enables secure communication over insecure networks.
+2. RSA is considered the standard for extra-seure communication.
+3. EC is a newer, faster, more transient encryption method.
+
+To learn how to use RSA keys to encrypt your own communications, check out [this other aritcle I wrote](/2020/04/06/rsa4.html).
+
diff --git a/_posts/2020-04-06-rsa4.md b/_posts/2020-04-06-rsa4.md
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--- /dev/null
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@@ -0,0 +1,345 @@
+---
+title: How To Encrypt Your Own Documents Using gpg
+layout: post
+author: tait
+---
+
+If you have ever wanted to garuntee the utmost security of your emails and documents, then this is the guide for you!
+It should be noted that in some circles the tools used are more common than in others.
+These are the everyday tools of many privacy advocates and computer nerds.
+
+If you have never used Linux however, then the method of doing this will be rather unfamiliar.
+This tutorial will be done on an [Arch Linux](https://archlinux.org/) machine,
+but it should be the same on Ubuntu, Fedora, CentOS, Debian,
+OpenBSD, FreeBSD, MacOSX, etc.
+The only operating system that does not include these tools by default (or easily accessible) is Windows.
+
+This tutorial makes heavy use of the terminal.
+You have been warned.
+
+*Let us...begin!*
+
+## Glossary
+
+* [**ASCII armour**](https://en.wikipedia.org/wiki/Binary-to-text_encoding#ASCII_armor) --- A way to encode **OpenPGP** documents so they are readable by humans. These files end in .asc
+* **(Open)PGP** --- An open standard for encoding pulbic keys and encrypted documents.
+* **GPG** --- GNUPrivacyGaurd is an implementation of **OpenPGP**. It is installed by default on most Linux distrobutions.
+
+## Step 0: Setup
+
+We will be using the utility `gpg` for this tutorial.
+
+The other thing to note: The character '$' (dollar sign) is usually not typed when shown in a command.
+It simply indicates that you do not need administrative privilages to run these commands.
+
+Test to see if you get this output in your terminal.
+
+
+$ gpg --version
+
+gpg (GnuPG) 2.2.20
+libgcrypt 1.8.5
+Copyright (C) 2020 Free Software Foundation, Inc.
+License GPLv3+: GNU GPL version 3 or later
+
+...
+
+
+If this is not successful look into how to install these tools on your system.
+
+## Step 1: Get/Create A Public Key!
+
+### Get Somebody Else's
+Step one is having somebody to send your encrypted message to. Maybe this is a friend, a journalist, or a whistleblower.
+
+To encrypt a document with somebody's public key, you need to first obtain it.
+My public key is available [at this link](/public-key.asc), and you can use it to send me encrypted stuff.
+
+If you are on a linux terminal, you can use the `curl` or `wget` command to download it.
+
+wget:
+
+
+### Make Your Own (optional)
+
+The following section is quite long,
+so if you don't want to create your own keypair,
+then feel free to skip to [Step #2](#step-2-import-public-key).
+
+If you want to encrypt your own documents,
+or you want others to be able to send you encrypted messages,
+then you can create your own public/private key pair.
+You can use these to encrypt your documents,
+and you can send our public key to others so that they can securely communicate with yourself.
+
+Run the following command in your terminal, and follow the steps I outline to get you started.
+
+
+$ gpg --full-gen-key
+
+
+This will produce the following dialog:
+
+
+gpg (GnuPG) 2.2.20; Copyright (C) 2020 Free Software Foundation, Inc.
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law.
+
+Please select what kind of key you want:
+ (1) RSA and RSA (default)
+ (2) DSA and Elgamal
+ (3) DSA (sign only)
+ (4) RSA (sign only)
+ (14) Existing key from card
+Your selection?
+
+
+Select the option `1`. You want two keys, both RSA.
+
+Next we will select the key size:
+
+RSA keys may be between 1024 and 4096 bits long.
+What keysize do you want? (2048)
+
+
+Type the number 2048.
+
+Next it will ask you how long you want the key to be valid.
+
+
+Requested keysize is 2048 bits
+Please specify how long the key should be valid.
+ 0 = key does not expire
+ <n> = key expires in n days
+ <n>w = key expires in n weeks
+ <n>m = key expires in n months
+ <n>y = key expires in n years
+Key is valid for? (0)
+
+
+Type the number 1. This will enable you time to test it,
+but it will make the key expire within 24 hours so that if you accidentally
+share your private key, or delete your VM and no longer have access to it, you will be fine.
+
+It will ask your if you are sure about the expiry date.
+
+
+Key expires at Tue Apr 7 02:24:23 2020 UTC
+Is this correct? (y/N)
+
+
+Type `y` to confirm your choice.
+
+Now `gpg` is going to ask you to create a user id to indetify this key.
+Use some test data for now.
+User input is in bold, feel free to follow along or to put your own test data in.
+
+Once you are more comfortable with the tools,
+then you can create a public/private keypair that you will keep for some time.
+
+
+GnuPG needs to construct a user ID to identify your key.
+
+Real name: Mr. Tester
+Email address: test@test.org
+Comment: for testing only
+You selected this USER-ID:
+ "Mr. Tester (for testing only) "
+
+Change (N)ame, (C)omment, (E)mail or (O)kay/(Q)uit? O
+
+
+It will then ask you for a password.
+If you are simply using this for test purposes,
+then you can feel free to set it to something like "test".
+When create a long-term use pulbic key make sure to make the password *very* secure.
+
+During the process of creating your key, `gpg` may warn you with this message:
+
+
+We need to generate a lot of random bytes. It is a good idea to perform
+some other action (type on the keyboard, move the mouse, utilize the
+disks) during the prime generation; this gives the random number
+generator a better chance to gain enough entropy.
+
+
+If this happens, feel free to smash your keyboard (lightly),
+watch a YouTube video on the machine,
+browse the web with [w3m](http://w3m.sourceforge.net/),
+etc. until the key is generated.
+
+You will know it is done when you see this message (or something similar):
+
+
+gpg: key EACCC490291EA7CE marked as ultimately trusted
+gpg: revocation certificate stored as '/home/tait/.config/gnupg/openpgp-revocs.d/FFA7D7525C6546983F1152D8EACCC490291EA7CE.rev'
+public and secret key created and signed.
+
+pub rsa2048 2020-04-06 [SC] [expires: 2020-04-07]
+ FFA7D7525C6546983F1152D8EACCC490291EA7CE
+ uid Mr. Tester (for testing only)
+ sub rsa2048 2020-04-06 [E] [expires: 2020-04-07]
+
+
+Tada! You have your own public/private keypair!
+
+Sharing a keypair that will expire soon is not a good idea,
+however, if you are ready, then you can use this command to generate a public key file to share with others.
+
+Feel free to substitute "Mr. Tester" for any other identifying part of your key.
+Remember that to use the email, you must enclose it in < and >.
+
+
+
+## Step 2: Import Public Key
+
+This list of keys that `gpg` keeps on tap so to speak, is called our "keyring".
+Your will need to import a new public key to encrypt files with `gpg`.
+
+If you already created your own public key, then this step is not necessary unless you want to also encrypt something for me :)
+
+
+
+
+ A keyring holding eight allen keys.
+
+
+
+To import a public key to use for encrypting files, use the `--import` option of `gpg`. Like so:
+
+
+$ gpg --import public-key.asc
+gpg: key 64FB4E386953BEAD: public key "Tait Hoyem " imported
+gpg: Total number processed: 1
+gpg: imported: 1
+
+
+Now that we have imported a public key, we can make a message to send!
+
+## Step 3: Have A Message To Encrypt
+
+You can make a new file which holds some important, secret data.
+Feel free to use a graphical editor if you have one, if not, `nano` works alright too.
+
+
+ Rules Of A Good Life:
+
+ 1. Wash your hands!
+ 2. Work hard!
+ 3. Be firm.
+ 5. Have good friends!
+
+
+Save this file as something like `test-pgp.txt`, and we'll use that name later.
+
+## Step 4: Encrypt A Message
+
+Now that we have a message to send and person to send to,
+all we have to do is encrypt this message and it'll be on its merry way!
+To do so, we must specify two new options to `gpg`.
+
+The first is `--recipient`.
+This tells `gpg` to encrypt using a certin public key that we have in our keyring.
+You can use the person's name, email address, or the key's uid.
+
+The second is `--encrypt`.
+
+You will also specify the `--armour` option to use ASCII armoured files. Put this option after `--encrypt`, and put the file name after `--armour`. See below.
+
+You can either use your own public key name to encrypt a document (allowng only you to decrypt it),
+or you can use my public key that we imported earlier (allowing only me to decrypt it).
+Either way works fine.
+
+This is the big one!
+
+
+
+## Step 5: Decryption (optional)
+
+If you created your own public/private keypair in step 1,
+and you encryped using `--recipient "Your Test Name"`,
+then you can decrypt your document as well!
+
+You will need to specify `--decrypt`, and that's all folks!
+
+
+$ gpg --decrypt test-gpg.txt.asc
+
+
+A password dialog will then come up asking for your previously created password.
+As long as you remember your password from before and enter it correctly: voila!
+
+
+gpg: encrypted with 4096-bit RSA key, ID 6989B986FCBE4225, created 2020-01-02
+ "Tait Hoyem "
+Rules Of A Good Life:
+
+1. Wash your hands!
+2. Work hard!
+3. Be firm.
+5. Have good friends!
+
+
+## Step 6: Finale!
+
+Ladies and gentleman, you have done it!
+You have encrypted our very own document.
+(And maybe even decrypted it yourself too :)
+
+If you encrypted using my public key,
+feel free to send it to [my email](mailto:tait@tait.tech).
+I am happy to verify if it worked.
+
+For more information on this subject, check out [gnugp.org's guide](https://www.gnupg.org/gph/en/manual/c14.html) on using GPG.
+They are the ones that make these tools available,
+and the [GNU Project](https://www.gnu.org/) has been instrumental in creating the open-source world as it exists today.
+Give 'em some love, eh!
+
+Thank you so much for sticking through this whole thing!
+Let me know if there is anything that doesn't make sense.
+I am happy to improve this guide as time goes on if that is necessary.
+
+Happy hacking :)
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font-size: .8em;
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+
+footer {
+ border-top: $line-under;
+ margin-bottom: 100px;
+}
+
+.terminal {
+ line-height: 1em;
+ overflow: scroll;
+ padding: 10px;
+ color: #00FF41;
+ margin: 0px;
+ background-color: #151515;
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+
+.small-image {
+ width: 100%;
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+
+
+
+
+ How To Encrypt Your Own Documents Using gpg
+
+
+
+
+
+
+
+
How To Encrypt Your Own Documents Using gpg
+
+
+
+ If you have ever wanted to garuntee the utmost security of your emails and documents, then this is the guide for you!
+It should be noted that in some circles the tools used are more common than in others.
+These are the everyday tools of many privacy advocates and computer nerds.
+
+If you have never used Linux however, then the method of doing this will be rather unfamiliar.
+This tutorial will be done on an [Arch Linux](https://archlinux.org/) machine,
+but it should be the same on Ubuntu, Fedora, CentOS, Debian,
+OpenBSD, FreeBSD, MacOSX, etc.
+The only operating system that does not include these tools by default (or easily accessible) is Windows.
+
+*Let us...begin!*
+
+## Glossary
+
+* [**ASCII armour**](https://en.wikipedia.org/wiki/Binary-to-text_encoding#ASCII_armor) --- A way to encode **OpenPGP** documents so they are readable by humans. These files end in .asc
+* **(Open)PGP** --- An open standard for encoding pulbic keys and encrypted documents.
+* **GPG** --- GNUPrivacyGaurd is an implementation of **OpenPGP**. It is installed by default on most Linux distrobutions.
+
+## Step 0: Setup
+
+We will be using the utility `gpg` for this tutorial.
+
+The other thing to note: The character '$' (dollar sign) is usually not typed when shown in a command.
+It simply indicates that you do not need administrative privilages to run these commands.
+
+Test to see if you get this output in your terminal.
+
+
+$ gpg --version
+
+gpg (GnuPG) 2.2.20
+libgcrypt 1.8.5
+Copyright (C) 2020 Free Software Foundation, Inc.
+License GPLv3+: GNU GPL version 3 or later
+
+...
+
+
+If this is not successful look into how to install these tools on your system.
+
+## Step 1: Get/Create A Public Key!
+
+### Get Somebody Else's
+Step one is having somebody to send your encrypted message to. Maybe this is a friend, a journalist, or a whistleblower.
+
+To encrypt a document with somebody's public key, you need to first obtain it.
+My public key is available [at this link](/public-key.asc), and you can use it to send me encrypted stuff.
+
+If you are on a linux terminal, you can use the `curl` or `wget` command to download it.
+
+wget:
+
+
+### Make Your Own (optional)
+
+The following section is quite long,
+so if you don't want to create your own keypair,
+then feel free to skip to [Step #2](#step-2-import-public-key).
+
+If you want to encrypt your own documents,
+or you want others to be able to send you encrypted messages,
+then you can create your own public/private key pair.
+You can use these to encrypt your documents,
+and you can send our public key to others so that they can securely communicate with yourself.
+
+Run the following command in your terminal, and follow the steps I outline to get you started.
+
+
+$ gpg --full-gen-key
+
+
+This will produce the following dialog:
+
+
+gpg (GnuPG) 2.2.20; Copyright (C) 2020 Free Software Foundation, Inc.
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law.
+
+Please select what kind of key you want:
+ (1) RSA and RSA (default)
+ (2) DSA and Elgamal
+ (3) DSA (sign only)
+ (4) RSA (sign only)
+ (14) Existing key from card
+Your selection?
+
+
+Select the option `1`. You want two keys, both RSA.
+
+Next we will select the key size:
+
+RSA keys may be between 1024 and 4096 bits long.
+What keysize do you want? (2048)
+
+
+Type the number 2048.
+
+Next it will ask you how long you want the key to be valid.
+
+
+Requested keysize is 2048 bits
+Please specify how long the key should be valid.
+ 0 = key does not expire
+ <n> = key expires in n days
+ <n>w = key expires in n weeks
+ <n>m = key expires in n months
+ <n>y = key expires in n years
+Key is valid for? (0)
+
+
+Type the number 1. This will enable you time to test it,
+but it will make the key expire within 24 hours so that if you accidentally
+share your private key, or delete your VM and no longer have access to it, you will be fine.
+
+It will ask your if you are sure about the expiry date.
+
+
+Key expires at Tue Apr 7 02:24:23 2020 UTC
+Is this correct? (y/N)
+
+
+Type `y` to confirm your choice.
+
+Now `gpg` is going to ask you to create a user id to indetify this key.
+Use some test data for now.
+User input is in bold, feel free to follow along or to put your own test data in.
+
+Once you are more comfortable with the tools,
+then you can create a public/private keypair that you will keep for some time.
+
+
+GnuPG needs to construct a user ID to identify your key.
+
+Real name: Mr. Tester
+Email address: test@test.org
+Comment: for testing only
+You selected this USER-ID:
+ "Mr. Tester (for testing only) "
+
+Change (N)ame, (C)omment, (E)mail or (O)kay/(Q)uit? O
+
+
+It will then ask you for a password.
+If you are simply using this for test purposes,
+then you can feel free to set it to something like "test".
+When create a long-term use pulbic key make sure to make the password *very* secure.
+
+During the process of creating your key, `gpg` may warn you with this message:
+
+
+We need to generate a lot of random bytes. It is a good idea to perform
+some other action (type on the keyboard, move the mouse, utilize the
+disks) during the prime generation; this gives the random number
+generator a better chance to gain enough entropy.
+
+
+If this happens, feel free to smash your keyboard (lightly),
+watch a YouTube video on the machine,
+browse the web with [w3m](http://w3m.sourceforge.net/),
+etc. until the key is generated.
+
+You will know it is done when you see this message (or something similar):
+
+
+gpg: key EACCC490291EA7CE marked as ultimately trusted
+gpg: revocation certificate stored as '/home/tait/.config/gnupg/openpgp-revocs.d/FFA7D7525C6546983F1152D8EACCC490291EA7CE.rev'
+public and secret key created and signed.
+
+pub rsa2048 2020-04-06 [SC] [expires: 2020-04-07]
+ FFA7D7525C6546983F1152D8EACCC490291EA7CE
+ uid Mr. Tester (for testing only)
+ sub rsa2048 2020-04-06 [E] [expires: 2020-04-07]
+
+
+Tada! You have your own public/private keypair!
+
+Sharing a keypair that will expire soon is not a good idea,
+however, if you are ready, then you can use this command to generate a public key file to share with others.
+
+Feel free to substitute "Mr. Tester" for any other identifying part of your key.
+Remember that to use the email, you must enclose it in < and >.
+
+
+
+## Step 2: Import Public Key
+
+This list of keys that `gpg` keeps on tap so to speak, is called our "keyring".
+Your will need to import a new public key to encrypt files with `gpg`.
+
+If you already created your own public key, then this step is not necessary unless you want to also encrypt something for me :)
+
+
+
+
+ A keyring holding eight allen keys.
+
+
+
+To import a public key to use for encrypting files, use the `--import` option of `gpg`. Like so:
+
+
+$ gpg --import public-key.asc
+gpg: key 64FB4E386953BEAD: public key "Tait Hoyem " imported
+gpg: Total number processed: 1
+gpg: imported: 1
+
+
+Now that we have imported a public key, we can make a message to send!
+
+## Step 3: Have A Message To Encrypt
+
+We can make a new file which holds some important, secret data.
+Feel free to use a graphical editor if you have one, if not, `nano` works alright too.
+Feel free to encrypt this and send it to me to see if it works!
+
+
+ Rules Of A Good Life:
+
+ 1. Wash your hands!
+ 2. Work hard!
+ 3. Be firm.
+ 5. Have good friends!
+
+
+Save this file as something like `test-pgp.txt`, and we'll use that name later :)
+
+## Step 4: Encrypt A Message
+
+Now that we have a message to send and person to send to,
+all we have to do is encrypt this message and it'll be on its merry way!
+To do so, we must specify two new options to `gpg`.
+
+The first is `--recipient`.
+This tells `gpg` to encrypt using a certina public key that we have in our keyring.
+We can use the person's name, email address, or the key's uid.
+
+The second is `--encrypt`.
+Put the file name after this option.
+
+We will also specify the `--armour` option to use ASCII armoured files.
+
+### On With It!
+
+Ok, yes!
+Let's encrypt our document now.
+
+We will be using my name to identify the key.
+In the very strange case you have two keys in your keyring named after me, this will fail...
+But at that point I have other questions.
+
+This is the big one!
+
+
+
+## Step 5: Finale!
+
+Ladies and gentleman, we have done it!
+We have encrypted our very own document.
+
+Feel free to send it to [my email (tait@tait.tech)](mailto:tait@tait.tech).
+I am happy to verify if it worked.
+
+For more information on this subject, check out [gnugp.org's guide](https://www.gnupg.org/gph/en/manual/c14.html) on using GPG.
+They are the ones that make these tools available,
+and the [GNU Project](https://www.gnu.org/) has been instrumental in creating the open-source world as it exists today.
+
+
+
+ 
+ 
+ 
+