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encryption decryption of Ascii codes using substitution

P: 2
my question is how to encrypt and decrypt the ASCII values using Substitution technique?
i need this programme in C++ language
May 4 '16 #1
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Expert Mod 5K+
P: 9,197
I would use two arrays. One for encoding and one for decoding.

To encode, say A which is decimal 65, look in element 65 and there is your substitution value. Let's say the substitution is 123.

To decode 123 use the decode array and look in element 123,.here you will find 65 which s the A.
May 4 '16 #2

P: 2
please send me code for this
May 6 '16 #3

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