cryptography

Cryptography/Introduction:

Cryptography is the study of information of any text or other messages hiding.

cryptography:

The art or science encompassing the principles and methods of transforming an intelligible MESSAGE into one that is unintelligible, and then retransforming that MESSAGE back to its original form

plaintext:

The original intelligible "MESSAGE" from source.

ciphertext:

The transformed message is said to be cypertext.

cipher:

An algorithm for transforming an intelligible message into one that is unintelligible by transposition and/or substitution methods.

examples:by using data encryption,RSA algorithm and somemore.

key:

some critical information used by the cipher, known only to the sender & receiver.

encipher: (encode)

the process of converting plaintext to ciphertext using a cipher and a key.

decipher: (decode)

the process of converting ciphertext back into plaintext using a cipher and a key.

Cryptanalysis:

the study of principles and methods of transforming an unintelligible MESSAGE back into an intelligible MESSAGE without knowledge of the key. Also called codebreaking.

Cryptology:

both cryptography and cryptanalysis.

code:

An algorithm for transforming an intelligible message into an unintelligible one using a code-book.