Hiding Secrets Steganography vs. Cryptography
                     Hiding Secrets:
Stegano
vs graphy
Crypto
Keeping Messages Safe
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Introduction
STEGANOGRAPHY: 
SECRETLY HIDING
• Steganography is similar to hiding a 
   treasure from viewer.
• It hides messages inside pictures, 
sounds, or other everyday things.
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CRYPTOGRAPHY: 
SECRET CODES
• Cryptography is like turning your 
   message into a secret code.
• The code can only be deciphered by 
   those who have the unique key.
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Introduction
HIDING VS. LOCKING
• Steganography hides messages, making 
   them almost invisible.
• Cryptography locks messages with 
   codes, making them hard to understand.
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Introduction
KEY DIFFERENCE
• Steganography: Nobody knows there's a 
   secret message.
• Cryptography: Everyone knows there's a 
   message, but only authorized ones can 
   read it.
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Introduction
WHEN TO USE?
• Use steganography when you want to keep 
   the message itself secret.
• Use cryptography when you want to keep 
   the meaning of the message secret.
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Introduction
COMBINING FORCES
• Steganography and cryptography may 
   sometimes work together.
• First, hide the message using 
   steganography, then lock it with 
   cryptography.
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Introduction
CHOOSING WISELY
• Consider your needs. Do you need to hide 
   or lock it?
• Choose whether you want others to see or 
   be aware of the message.
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Introduction
STAY CURIOUS
•  Keep learning about both steganography 
   and cryptography.
•  They help keep secrets safe in different, 
    exciting ways.
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Introduction
EXAMPLES
• Steganography: Embedding a hidden 
   message in a picture's pixels.
• Cryptography: Changing "hello" into "2jkkl" 
   using a secret code.
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