Instructions: Encrypted emails send and receive!

I'd like to explain how easy it really is to send secure encrypted messages. But I have to explain how this works, because the basic knowledge is necessary, otherwise you can not understand that.

How does encryption work?

As a rule any file or text can be encrypted. This is done with the help of a "private" and a "public key". Both are usually created by using a password or a string and converting it to a specific value.

There are also different methods for how to do that. But that is not so important for my contribution and leads to confusion mostly. In practice, for example, then "123" becomes "[Email protected]+ $ ZmKr ". But the higher you do encryption, 123 can also be a drawing sequence with 10.000 or more characters.

At PGP (Pretty Good Privacy) There is, as usual, just the "public" and the "private" key is calculated. These strings are in turn the password to encode files (that's what you do with the "public" key or decode what you do with the "private" key.) So if you want to encrypt a date that you just open yourself can. If you only use your own key pair. But if you want to encrypt a file, so that someone else has access to it WITHOUT having his own "private" key, then you simply use the public key of the recipient for it. You can also encrypt files for several people at the same time. One should never forget his own public keys, because one can encrypt files only for someone else, but then has no access to it.

As far as comprehensible? It sounds more complicated than it actually is. But only with this knowledge one understands and can implement that.

I'm sorry, but this information is really important to understand how it works. The principle is always the same, regardless of whether one saves text, files or data which are then transferred.

Public key (for encryption) and
Private key (to decrypt)

There is always the "public" key with the encrypted and the "private" and only with this the file can be made readable afterwards (decrypted)!

As the name implies, the public key is not a secret, nor does it have to be, because it allows you to encrypt files but can not decrypt them anymore.

My "public PGP key" is:

--BEGIN PGP PUBLIC KEY BLOCK--
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 // bxDQ3dAHLQuLMacgKwG0
C8WZUhedC4BZT+w7DBrpcup+FPrwg5D8pltl/aywaL0Y7t6SZUFDfGR5EDJC
Tv8mXgex9dq2RZAQTceveZMa4uss+jkS2fVwIkk6Pq4GZXiC2Jg5kTEPDLmK
+YrBjqfLx+ce6axoWsSngJ+TjDNFGT2FVERZRGjOjSnTSQ42OU9nMJRGQPK8
ShCoGuXgFzrQi5y0g4zGsqHgHtNn5ljhGlStuBTVEE/4vDlUUEnyE4g3Y1/I
PP2W6ZKDDg9BdiNQ6itZzJ1H3OCwyFs5vHgjHdSBKTzTR/HU8el46fSVdhup
D9opQKeVFwiKyjU20X5eII7oot04f1hriiqVnOzZovWhAkNaXV82wtE5Dsvc
sxMGdQZRCO8fLNVZDdDUQF4rlriX5npd/N0xg0wJci4HWqgKTlwOhaZztcwI
V5Xzz0B / fPhSQVyZjMEkdWVoBALLerRBmx + qXAqV97oRcjxTkvJepnYXSdGW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 + BFkQ0XXcdUEDlbDVkULWhmKSzTjLBy7fABEBAAHCwV8EGAEIABMF
AlbZYNEJEHlyQFhaCCtEAhsMAACfkg / 7BHSOSRdiiVuzND4dqN2PRDdelzlp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= 3D4o
--END PGP PUBLIC KEY BLOCK--

This string was created from a password that I converted with 4096-bit. As briefly described in the above example. It is safe that this key is accessible because it does not suggest my "private" key.

Encrypt one now Text like "123", then come out:

--BEGIN PGP MESSAGE--

wcFMA1+0v6ncp8CeAQ/+Mi8D/Ki3q4yowakGHootlYL8cscT2rzNKWX+x0Bv
+aQbflCnnnrl6P/e1SKiLvVBvkRqTLp8oXIg4yiqJZdNtFd+tfE6cuQt3vPF
DraQTQTM6uPqZkMFEZXRNlbl4eYPDspGd8bOhuVCH9d8jsAMiQGh936wENrz
Xn3s7HbzUM/4HbBIIDKjUFdNedos3IglzVq7kld723AAum/XMOcwjdDpc4G3
vfcyQoLgcREK94SGTEnApcgo2d1cd6Km9xN+4MIVfzOGuzttymhWTAO7gYaP
1Jcq5oUvlLuErZErfbp9kk8kpTVVDH8UCA/nkXPCXtZQygFt8BxuJ+0An5wd
GNsJdwx+kVAl6DVgiPjes2u8fsEZiFP+3XYGMmcy8SO9jLC+dDH1p1u0mco/
sHc0eWQoBCpxxP6fcyVP9aQEaMV + + reZcQYFXqDAj qQPg4yKeZuTvTMn / KQQ
UpVYliWYu9zFH5qYlZX596Y6uQziKzzvisIS0jYTE7i6RICLaZAqqaAUtJam
dj9STl9yJ4Hei7iMUEoXawBr8fnHrr6pZFvy9Z6wvwKiE+Z1lWsjxU1/SYZM
VPGX/dmCjNnij2xWj3bvZo0EK34ySF1SFE+kC30YSUczzSgRcEeOEXwHE+Cv
S5ks0t6munMfyijgjOKSEj/1IBKkNZiKFZSpjV86oHDSOwFMNJO8+WlsId5s
p2TBKBGJ5BhEI8nh9Z0L4aXJ/Yc3bnZ4vJOA5ykPIkJuEKKAtPpwxCSiaz6a
TCGF
= ci19
--END PGP MESSAGE--

So if you want to send an encrypted email, you also need the "public key" of the recipient. This is the only way to encrypt a text or a file and the recipient can then open it again with his "private key".

It is not the "email" encrypted itself, because this file (the email itself is quasi the envelope) must be read yes. So the recipient must be naturally readable, as for a letter envelope, for everyone. But it explains the contents as in the above example "encrypted" for themselves and the recipients. It is important that one should know that all what one writes therefore in the subject of the e-mail and also sender and receiver are visible to third parties.

So if you betray all the content in the subject, then you do not need to encrypt the content anymore!

There are two simple TIPS and examples of encrypted communication by e-mail.

Mailvelope and TutaNota.

Mailvelope is a PGP encryption tool that can be conveniently integrated into any Internet browser and is free. Thus, you can create your own key pairs, import and save public keys of others and encrypt or decrypt texts of emails directly. This is handy if you use any webmail service. It does not matter which one!

TutaNota is a free email service that encrypts and sends messages to others WITHOUT encrypting them. This happens by simply dropping the message encrypted when it is sent to TutaNota. The recipient only receives a notification that an encrypted message has been provided for him and then, in order to open them, he has to enter a password that sender and recipient have previously shared (NOT by EMAIL!). That can always be the same password and even if it is not smart, would also "123" work.

Or you can combine both. Encrypt the content of the message via Mailvelope with PGP and then send it encrypted to the recipient 🙂

I hope that this information is helpful and I am also happy about your encrypted message via email! You can reach me with my public PGP key and / or via my e-mail address: [Email protected]

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Instructions: Encrypt emails safely and easily!
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Created on:03/31/2016

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