PowerPoint
1
-
.
2
. 2 ( 4) (2) (2)
. -
3
: . . . . . . . .
-
4
-
:
: - -
5
-
. ...
: - -
6
-
7
10
(1/3/8) 1 57_58
: : .: .
8
(1/3/8) (TrueCrypt) + . SHA1 CRC MD5 (CRC Failed). .
9
: - -
10
10
(2/3/8) : 1 58-612 .
RSA . GCHQ . Carberp Trojan , 60 2 . STORM 551 .
11
(2/3/8) RSA . GCHQ . Carberp Trojan , 60 2 . STORM 551
12
: . .
13 : - -
13
-
14
Encrypt information
14
15
: - -
15
-
: - -
16
-
: - -
1- 2-
(Symmetric Cryptography) (SecretKey) . (passphrase) ( ) . . . .
(cipher textor encrypted text) (binary key) . DES. . (Asymmetric
Cryptography) (Public key) . (public key) (private key). . . RSA
DES . RSA . PGP RSA. PGP 128 (message digest). .
17
Asymmetric Cryptography
: - -
18
10
(3/3/8) 1 61-64
: (5) (2-4) (62): 1 2 3 4
19
(3/3/8) 1 2 3 4
20
-
: - -
21
: - -
22
10
(4/3/8) 1 61-64
: : .
Qrw456134uA1b2d33e649b8a8c77eef43213345fgnuhJhg2bgjgm67mFdfhfghfg--ghfgh
23
(4/3/8) Qrw456134u (A-F)A1b2d33e64 bit WEP(64)9b8a8c77eef43213
26345fgnuhWPAJhg2bgjgm67m 8 Fdfhfghfg--ghfgh (-) (26)
24
-
Protect online applications
25
https 26 : - -
26
10
(5/3/8) 1 64-65
: . ( )
https://docs.google.com/a/eastjeddah.org/forms/d/1nJStAS2RWaF9-b4_bjS0-1ExhhnTdy4EpTomXb6gvuE/viewform
( (https
https://docs.google.com/a/eastjeddah.org/forms/d/1Suz0ghpAPnmfzxvZXV46a3rZSFzSnvbYT0-1jbkpuU0/viewform
( (Digital Signature
https://docs.google.com/a/eastjeddah.org/forms/d/1Uf5COhI4RFY7iN9HJchKHrqTayxs2R5K9O2Iy72ou9Q/viewform
( (Digital Certificates
https://docs.google.com/a/eastjeddah.org/forms/d/1yEyuZpRjRKtOrVyQQAqfs_ghD41fRrgGEvXkZXhVahA/viewform
27
20
(4/3/8) 1 73- 82
- : :1. .2. .3. .4. (Windows ).
28
29
