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<\/figure>\n\n\n\nCryptography and steganography are two powerful techniques that are nowadays used often to protect digital information. While the aim of both the techniques is to keep data safe from prying eyes, they take very different approaches. One scrambles the data, the other hides it.<\/p>\n\n\n\n
This blog post is all about Cryptography vs Steganography! Let\u2019s get started with their definition and then we will move to their in-depth comparison.<\/p>\n\n\n\n
<\/span>What is Cryptography?<\/span><\/h2>\n\n\n\nCryptography protects sensitive information by converting it into unreadable text using some encryption algorithms. It helps in reaching the message only to the authorized persons. It relies on secure encoding and decoding techniques to prevent unauthorized access.<\/p>\n\n\n\n
Origin of Cryptography<\/strong><\/p>\n\n\n\nThe art of secret writing has existed for a long time, while cryptography as a science is only about a hundred years old. From Julius Caesar\u2019s simple substitution ciphers to the rotor machines used by the military in World War II, cryptography is now a key part of internet communication.<\/p>\n\n\n\n
Types of Cryptography<\/strong><\/p>\n\n\n\nModern cryptography relies on algorithms and keys to keep data confidential. It mainly operates in two forms:<\/p>\n\n\n\n
\n- Symmetric key encryption:<\/strong> In this, encryption and decryption are both performed with the same key. It\u2019s fast and efficient and often used in systems like AES (Advanced Encryption Standard).<\/li>\n\n\n\n
- Asymmetric key encryption: <\/strong>It uses a public key for encryption and a private key for decryption. It is used mainly to secure email, electronic signatures, and HTTPS protocols, for example, the RSA cryptography algorithm.<\/li>\n<\/ul>\n\n\n\n
Nowadays, cryptography is used in many different areas. It shields personal information in emails, ensures that transactions run securely, verifies online identities, and enforces security for all data in the cloud and live chats.<\/p>\n\n\n\n
To put it simply, cryptography is what makes the information secure, confidential, and reliable.<\/p>\n\n\n\n
<\/span>What is Steganography?<\/span><\/h2>\n\n\n\nSteganography in cybersecurity<\/a> means concealing a secret message within any piece of content, say, an image, voice message, or video, making it appear like the usual content. It\u2019s Greek in origin.<\/p>\n\n\n\nThe word is created from steganos, for covered, and graphia, for writing.<\/p>\n\n\n\n
In contrast to cryptography, which renders a message unreadable, steganography tries to hide the message entirely.<\/p>\n\n\n\n
Origin of Steganography<\/strong><\/p>\n\n\n\nThis technique isn\u2019t new. More than two thousand years ago at the time of ancient Greece, stories from Herodotus describe ways to conceal messages. Secret messages were sent by writing on wax tablets or onto people\u2019s hair.<\/p>\n\n\n\n
The first time the term was formally used was in 1499 by Johannes Trithemius in his book Steganographia, which mixed mystical writing with practical ways to keep secret messages.<\/p>\n\n\n\n
So, how does it work? In today\u2019s steganography, a digital file, such as an image or sound, holds a hidden message. The purpose is to quietly modify this file so it\u2019s impossible for a human to spot a difference.<\/p>\n\n\n\n
Techniques used in Steganography<\/strong><\/p>\n\n\n\nTwo popular techniques include:<\/p>\n\n\n\n
\n- Least Significant Bit (LSB): <\/strong>Embeds data by changing the smallest bits of pixel or sound values.<\/li>\n\n\n\n
- Masking and Filtering: <\/strong>Hides data in visible parts of media without noticeably altering the original file.<\/li>\n<\/ul>\n\n\n\n
Use cases range from harmless to high stakes.<\/strong><\/p>\n\n\n\n\n- Artists use it for watermarking digital work, activists might use it to bypass censorship<\/li>\n\n\n\n
- Intelligence agencies may employ it for covert operations.<\/li>\n\n\n\n
- In the digital age, it\u2019s even used in malware to quietly exfiltrate data.<\/li>\n<\/ul>\n\n\n\n
Steganography isn\u2019t about scrambling the message; it\u2019s about hiding its very existence. And that\u2019s what makes it both fascinating and powerful in today\u2019s world of digital secrecy.<\/p>\n\n\n\n
<\/span>What Are The Key Differences Between Cryptography And Steganography<\/span><\/h2>\n\n\n\nWhile both cryptography and steganography are used to protect information, they take very different approaches. Here’s the difference between cryptography and steganography:<\/p>\n\n\n\n
The art of secret writing has existed for a long time, while cryptography as a science is only about a hundred years old. From Julius Caesar\u2019s simple substitution ciphers to the rotor machines used by the military in World War II, cryptography is now a key part of internet communication.<\/p>\n\n\n\n
Types of Cryptography<\/strong><\/p>\n\n\n\n Modern cryptography relies on algorithms and keys to keep data confidential. It mainly operates in two forms:<\/p>\n\n\n\n Nowadays, cryptography is used in many different areas. It shields personal information in emails, ensures that transactions run securely, verifies online identities, and enforces security for all data in the cloud and live chats.<\/p>\n\n\n\n To put it simply, cryptography is what makes the information secure, confidential, and reliable.<\/p>\n\n\n\n Steganography in cybersecurity<\/a> means concealing a secret message within any piece of content, say, an image, voice message, or video, making it appear like the usual content. It\u2019s Greek in origin.<\/p>\n\n\n\n The word is created from steganos, for covered, and graphia, for writing.<\/p>\n\n\n\n In contrast to cryptography, which renders a message unreadable, steganography tries to hide the message entirely.<\/p>\n\n\n\n Origin of Steganography<\/strong><\/p>\n\n\n\n This technique isn\u2019t new. More than two thousand years ago at the time of ancient Greece, stories from Herodotus describe ways to conceal messages. Secret messages were sent by writing on wax tablets or onto people\u2019s hair.<\/p>\n\n\n\n The first time the term was formally used was in 1499 by Johannes Trithemius in his book Steganographia, which mixed mystical writing with practical ways to keep secret messages.<\/p>\n\n\n\n So, how does it work? In today\u2019s steganography, a digital file, such as an image or sound, holds a hidden message. The purpose is to quietly modify this file so it\u2019s impossible for a human to spot a difference.<\/p>\n\n\n\n Techniques used in Steganography<\/strong><\/p>\n\n\n\n Two popular techniques include:<\/p>\n\n\n\n Use cases range from harmless to high stakes.<\/strong><\/p>\n\n\n\n Steganography isn\u2019t about scrambling the message; it\u2019s about hiding its very existence. And that\u2019s what makes it both fascinating and powerful in today\u2019s world of digital secrecy.<\/p>\n\n\n\n While both cryptography and steganography are used to protect information, they take very different approaches. Here’s the difference between cryptography and steganography:<\/p>\n\n\n\n\n
<\/span>What is Steganography?<\/span><\/h2>\n\n\n\n
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<\/span>What Are The Key Differences Between Cryptography And Steganography<\/span><\/h2>\n\n\n\n