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Mixed Bag
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Cryptography
Cryptography is the science of information security. The information is transformed
into an unreadable format.
Codes of letters
A B C D E F G H I J K L M N
26 25 24 23 22 21 20 19 18 17 16 15 14 13
O P Q R S T U V W X Y Z
12 11 10 9 8 7 6 5 4 3 2 1
Decode the secret message sent by your friend
26 9 22 2 12 6 9 22 26 23 2 21 12 9 7 19 22 11 26 9 7 2
A R E Y O U R E A D Y F O R T H E P A R T Y
Now, decode the following message.
20 12 12 23 14 12 9 13 18 13 20
1.
19 12 4 26 9 22 2 12 6
2.
H A P P Y B I R T H D A Y
3.
Fact File
The very word cryptography has Greek origins.
‘Kryptos’ means hidden and ‘Graphien’ means word.
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