11.Згенерувати ключі під іменем dmitry2

dima@Anastary:~/Desktop/Semestr5/TIK/tzi2$ sudo gpg --gen-key

gpg (GnuPG) 1.4.16; Copyright (C) 2013 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)

Your selection? 2

DSA keys may be between 1024 and 3072 bits long.

What keysize do you want? (2048) 1024

Requested keysize is 1024 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) 0

Key does not expire at all

Is this correct? (y/N) y

You need a user ID to identify your key; the software constructs the user ID

from the Real Name, Comment and Email Address in this form:

"Heinrich Heine (Der Dichter) <heinrichh@duesseldorf.de>"

Real name: dmitry2

Email address: enshteynn@ukr.net

Comment: test2

You selected this USER-ID:

"dmitry2 (test2) <enshteynn@ukr.net>"

Change (N)ame, (C)omment, (E)mail or (O)kay/(Q)uit? o

You need a Passphrase to protect your secret key.

test2

test2

gpg: gpg-agent is not available in this session

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.

+++++.+++++++++++++++++++++++++.++++++++++++++++++++++++++++++++++++++++.+++++..+++++.+++++++++++++++.++++++++++....++++++++++++++++++++.++++++++++..........................+++++

Not enough random bytes available. Please do some other work to give

the OS a chance to collect more entropy! (Need 158 more bytes)

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.

++++++++++.++++++++++.++++++++++++++++++++.+++++++++++++++++++++++++++++++++++..++++++++++.++++++++++++++++++++.+++++++++++++++++++++++++>+++++.................................................................................................................................................................+++++^^^

gpg: key 0E0B4448 marked as ultimately trusted

public and secret key created and signed.

gpg: checking the trustdb

gpg: 3 marginal(s) needed, 1 complete(s) needed, PGP trust model

gpg: depth: 0 valid: 2 signed: 0 trust: 0-, 0q, 0n, 0m, 0f, 2u

pub 1024D/0E0B4448 2014-11-19

Key fingerprint = 1997 EE7F 88DD D092 09D2 53B1 67F9 6A59 0E0B 4448

uid dmitry2 (test2) <enshteynn@ukr.net>

sub 1024g/71812009 2014-11-19

12.З власного каталога імпортуйте власний відкритий ключ

Отримання ,тобто імпортування виконують за командою gpg - -import

dima@Anastary:~/Desktop/Semestr5/TIK/tzi2$ sudo gpg --import mehed.asc

gpg: key AD6E08EC: "dmitry (test) <enshteynn@ukr.net>" not changed

gpg: Total number processed: 1

gpg: unchanged: 1

13.Переконайтесь ,що ключ додався до власного набору відкритих ключів.

Переглянемо відкриті ключі інших користувача enshteynn@ukr.net

dima@Anastary:~/Desktop/Semestr5/TIK/tzi2$ sudo gpg --list-keys enshteynn@ukr.net

pub 2048D/AD6E08EC 2014-11-19

uid dmitry (test) <enshteynn@ukr.net>

sub 2048g/729606BF 2014-11-19

pub 1024D/0E0B4448 2014-11-19

uid dmitry2 (test2) <enshteynn@ukr.net>

sub 1024g/71812009 2014-11-19

14.Зашифруйте file для користувача dmitry і збережіть його у власному каталозі

dima@Anastary:~/Desktop/Semestr5/TIK/tzi2$ sudo gpg -r dmitry -ea test.txt

Зашифрували ,додався файл test.txt.asc

15.Зашифруйте і подпишіть file2 для користувача dmitry

Шифр

dima@Anastary:~/Desktop/Semestr5/TIK/tzi2$ sudo gpg -r dmitry -ea test2.txt

Підпис

dima@Anastary:~/Desktop/Semestr5/TIK/tzi2$ sudo gpg --clearsign test2.txt.asc

You need a passphrase to unlock the secret key for

user: "dmitry (test) <enshteynn@ukr.net>"

2048-bit DSA key, ID AD6E08EC, created 2014-11-19

16.Спробуйте розширфувати test.txt.asc and test2.txt.asc за допомогою ключа dmitry2

Для розшифрування файлів dmitry2 набирає команду :

gpg -d file.txt.asc та gpg -d file2.txt.asc

йому пропонують ввести пароль ,який він не знає.Розшифрувати файли може тільки користувач dmitry

17.Розшифруйте файли file.txt.asc та file2.txt.asc

Для розшифрування цього файлу dmitry набирає команду :

dima@Anastary:~/Desktop/Semestr5/TIK/tzi2$ sudo gpg -d test.txt.asc

You need a passphrase to unlock the secret key for

user: "dmitry (test) <enshteynn@ukr.net>"

2048-bit ELG-E key, ID 729606BF, created 2014-11-19 (main key ID AD6E08EC)

gpg: gpg-agent is not available in this session

gpg: encrypted with 2048-bit ELG-E key, ID 729606BF, created 2014-11-19

"dmitry (test) <enshteynn@ukr.net>"

yf,l[

';hgouyidjmzgl'irzhg;o'b

r ]\h;fh

'f'd

h'

fd

dima@Anastary:~/Desktop/Semestr5/TIK/tzi2$ sudo gpg -d test2.txt.asc

You need a passphrase to unlock the secret key for

user: "dmitry (test) <enshteynn@ukr.net>"

2048-bit ELG-E key, ID 729606BF, created 2014-11-19 (main key ID AD6E08EC)

gpg: gpg-agent is not available in this session

gpg: encrypted with 2048-bit ELG-E key, ID 729606BF, created 2014-11-19

"dmitry (test) <enshteynn@ukr.net>"

2пфывфваыаyf,l[п

'а;hпфвыgouyпфаidjmzgl'irzhg;o'b

r вфаыфапфв]\h;fh

'fфывп'вфыd

hп'

fd