Cryptography (raza hassan)
•Download as PPTX, PDF•
2 likes•109 views
Cryptography is the science of using mathematics to encrypt and decrypt data to enable secure storage and transmission of sensitive information. It involves using a key to convert plaintext into ciphertext that can only be read by the intended recipient. There are two main types: symmetric key cryptography which uses the same key for encryption and decryption and is faster, and asymmetric key cryptography which uses two different keys and is more secure but also more complex. Cryptography ensures confidentiality, authentication, integrity, access control and availability of data through techniques like substitution and transposition ciphers.
Report
Share
Report
Share
Recommended
Cryptography saurabh
It is the introductory important matter about Cryptography and its implementations along with legal issues.
Cryptography
Cryptography is the practice of securing communication through encryption and decryption techniques to transmit information secretly. There are three eras in the history of cryptography: the manual era, mechanical era, and modern era. The main types of cryptography are encryption, which locks up information, and decryption, which unlocks encrypted information. Cryptography uses keys, either symmetric keys where the same key encrypts and decrypts, or public key cryptography which uses two separate keys - a private key and public key.
Cryptography
Secret writing refers to cryptography and steganography. Cryptography involves encrypting messages so only authorized users can read them, while steganography hides information within other files or mediums. Common cryptographic techniques include symmetric and asymmetric encryption methods. Symmetric encryption uses a shared key between sender and receiver, while asymmetric encryption uses public and private key pairs. Steganography hides information by embedding it within images or other files.
Cryptography
This document discusses the history of encryption and cryptography. It covers early techniques like steganography and transposition ciphers where plaintext is rearranged. The Caesar and Vigenere ciphers are also explained, where letters are shifted or substituted according to a key. Modern encryption methods are then outlined, including public key infrastructure (PKI) which allows two parties to authenticate each other using digital signatures and public/private key pairs. The document traces encryption techniques over centuries and how they evolved with technological advances to the widespread use of encryption today to secure internet communications and banking.
Sw week12
Symmetric key encryption uses a secret key that is shared between two computers to encrypt and decrypt messages sent between them. Public key encryption addresses the weakness of needing to securely share a key beforehand by using a hashing algorithm to generate keys from input values, making it nearly impossible to derive the original input without knowing the data used to create the hash. A popular implementation of public key encryption is Secure Sockets Layer (SSL) and its successor Transport Layer Security (TLS), which are Internet security protocols used by browsers and servers to transmit sensitive information securely.
Overview of cryptography
This document provides an overview of cryptography. It discusses that cryptography is the practice of secure communication in the presence of others. The purpose of cryptography is to defend against hackers and industrial espionage while securing e-commerce, bank accounts, intellectual property, and avoiding liability. Cryptography provides authentication, privacy, integrity, and non-repudiation. Encryption converts plain text to cipher text using a key while decryption converts cipher text to plain text. Common cryptographic algorithms are secret key cryptography, public key cryptography, and hash functions. Secret key cryptography uses a private key for encryption while public key cryptography uses a public key exchanged over an insecure channel. Hash functions produce a checksum of data. AES encryption is now commonly used and
Encryption presentation(self made
This document discusses various methods of encryption and securing communications. It is presented by a group including Haseeb Shabbir, Zeeshan Khalid, Tariq Saeed, Sufyan Jalib, and Tassadaq Hussain. The document defines encryption and decryption, and describes symmetric key encryption and public key encryption. It also discusses various techniques for securing channels of communication, including Secure Sockets Layer (SSL), S-HTTP, and virtual private networks (VPNs). Firewalls, antivirus software, proxies, and their functions are also summarized.
Cryptography intro
Cryptography involves encrypting plaintext data into ciphertext using encryption algorithms and keys. Conventional cryptography uses a single secret key for both encryption and decryption, while public key cryptography uses separate public and private keys. The combination of these methods in hybrid cryptosystems like PGP provides both the speed of conventional encryption and the key distribution benefits of public key cryptography.
Recommended
Cryptography saurabh
It is the introductory important matter about Cryptography and its implementations along with legal issues.
Cryptography
Cryptography is the practice of securing communication through encryption and decryption techniques to transmit information secretly. There are three eras in the history of cryptography: the manual era, mechanical era, and modern era. The main types of cryptography are encryption, which locks up information, and decryption, which unlocks encrypted information. Cryptography uses keys, either symmetric keys where the same key encrypts and decrypts, or public key cryptography which uses two separate keys - a private key and public key.
Cryptography
Secret writing refers to cryptography and steganography. Cryptography involves encrypting messages so only authorized users can read them, while steganography hides information within other files or mediums. Common cryptographic techniques include symmetric and asymmetric encryption methods. Symmetric encryption uses a shared key between sender and receiver, while asymmetric encryption uses public and private key pairs. Steganography hides information by embedding it within images or other files.
Cryptography
This document discusses the history of encryption and cryptography. It covers early techniques like steganography and transposition ciphers where plaintext is rearranged. The Caesar and Vigenere ciphers are also explained, where letters are shifted or substituted according to a key. Modern encryption methods are then outlined, including public key infrastructure (PKI) which allows two parties to authenticate each other using digital signatures and public/private key pairs. The document traces encryption techniques over centuries and how they evolved with technological advances to the widespread use of encryption today to secure internet communications and banking.
Sw week12
Symmetric key encryption uses a secret key that is shared between two computers to encrypt and decrypt messages sent between them. Public key encryption addresses the weakness of needing to securely share a key beforehand by using a hashing algorithm to generate keys from input values, making it nearly impossible to derive the original input without knowing the data used to create the hash. A popular implementation of public key encryption is Secure Sockets Layer (SSL) and its successor Transport Layer Security (TLS), which are Internet security protocols used by browsers and servers to transmit sensitive information securely.
Overview of cryptography
This document provides an overview of cryptography. It discusses that cryptography is the practice of secure communication in the presence of others. The purpose of cryptography is to defend against hackers and industrial espionage while securing e-commerce, bank accounts, intellectual property, and avoiding liability. Cryptography provides authentication, privacy, integrity, and non-repudiation. Encryption converts plain text to cipher text using a key while decryption converts cipher text to plain text. Common cryptographic algorithms are secret key cryptography, public key cryptography, and hash functions. Secret key cryptography uses a private key for encryption while public key cryptography uses a public key exchanged over an insecure channel. Hash functions produce a checksum of data. AES encryption is now commonly used and
Encryption presentation(self made
This document discusses various methods of encryption and securing communications. It is presented by a group including Haseeb Shabbir, Zeeshan Khalid, Tariq Saeed, Sufyan Jalib, and Tassadaq Hussain. The document defines encryption and decryption, and describes symmetric key encryption and public key encryption. It also discusses various techniques for securing channels of communication, including Secure Sockets Layer (SSL), S-HTTP, and virtual private networks (VPNs). Firewalls, antivirus software, proxies, and their functions are also summarized.
Cryptography intro
Cryptography involves encrypting plaintext data into ciphertext using encryption algorithms and keys. Conventional cryptography uses a single secret key for both encryption and decryption, while public key cryptography uses separate public and private keys. The combination of these methods in hybrid cryptosystems like PGP provides both the speed of conventional encryption and the key distribution benefits of public key cryptography.
Cryptography
Cryptography is the practice and study of hiding information. It involves encrypting plain text into unintelligible cipher text using an algorithm or key, and decrypting cipher text back into plain text. There are two main types of cryptography: symmetric key cryptography which uses the same key to encrypt and decrypt, and asymmetric key cryptography which uses different keys. Cryptography improves security, keeps communications private, and ensures privacy by encoding messages in a way that can only be read by those possessing the decryption key.
CyberGhost VPN Encryption Guide
Encryption is a process of encoding information in a way that only authorized parties can read it. It was first used over 2000 years ago by Julius Caesar and ancient Greeks to hide military communications. There are two main types of encryption - symmetric encryption which uses the same key to encrypt and decrypt, and public-key encryption which uses a public key to encrypt and a private key to decrypt. Encryption is now widely used to protect data on computers and transmitted over networks by individuals, companies and governments.
WHAT IS CRYPTOGRAPHY - A COMPREHENSIVE GUIDE
Get COUPON CODES LINKEDIN10 visit https://www.sprintzeal.com/blog/what-is-cryptography
Introduction to Cryptography
Cryptography is a technique of secure communications that allows a particular sender and intended recipient of a message to view its contents. The term is obtained from the Greek word “Kryptos”, which means “hidden, secret”. More generally, cryptography is about establishing and analyzing protocols that avert third parties or the public from reading personal messages. Moreover, it works on the various aspects of information security such as data confidentiality, data integrity, authentication, and non-repudiation.
cryptography and network security
Cryptography is the practice of secure communication in the presence of attackers. It allows people like Andy to send private messages to friends like Sam over public channels like WhatsApp. Encryption uses algorithms and keys to encode messages during transmission and decrypt them upon arrival. Symmetric key cryptography uses a shared private key while asymmetric key cryptography uses separate public and private keys. Popular algorithms include RSA, which uses a variable key size, and AES for block encryption. Tokenization substitutes sensitive data with non-sensitive tokens to enhance security, and JSON web tokens (JWTs) are commonly used to securely transmit information between parties in a JSON object and authenticate users via bearer authorization in headers.
Data encryption
Encryption is a technique that scrambles data to make it unreadable by anyone without access to the decryption key. There are different types of encryption methods, including hashing, symmetric encryption (using a single private key), and asymmetric encryption (using a public and private key pair). Common encryption algorithms include Triple DES, RSA, Blowfish, Twofish, and AES. The future of encryption involves new techniques like honey encryption and quantum key distribution to stay ahead of evolving cyber threats.
Applied Cryptography
This document provides an overview of applied cryptography. It begins with definitions of cryptography and discusses techniques like Caesar ciphers and attacks on those ciphers. It then covers cryptographic objectives of confidentiality, integrity, authenticity and non-repudiation. The document summarizes hash functions, symmetric cryptography using keys, asymmetric cryptography using public/private key pairs, digital signatures, and authentication techniques. It provides examples of encrypting and decrypting messages as well as generating and verifying digital signatures for sender authentication and message integrity.
F16 cs61 cryptography
Cryptography is the study of securing communication and information. It uses protocols, algorithms, and strategies to hide sensitive information from unauthorized access and enable verification of every component of a communication. The primary functions of cryptography are privacy, authentication, integrity, non-repudiation, and key exchange. While cryptography provides advantages in security and verification, it also has limitations such as vulnerability to brute force attacks and risk of losing access to data if secret keys are lost.
Eng Slide3
Encryption allows for secure transmission of sensitive data over the internet. Symmetric key encryption uses the same key between two parties, while public key encryption uses a public and private key pair. Modern encryption on websites is indicated by URLs starting with "https" and a padlock icon, using protocols like TLS to securely transmit data like financial information. Hashing algorithms also play a role in encryption by generating hash values from inputs that cannot easily be reversed without the original data.
Encryption
Encryption encodes information to protect it from unauthorized access. It involves two processes - encryption scrambles the information using an algorithm, while decryption reverses the process to restore the original information. There are two main methods: symmetric key encryption uses the same key to encrypt and decrypt, while asymmetric key encryption uses separate public and private keys.
Sw2 week12
Encryption works by using keys to scramble data so it can only be read by authorized parties. There are two main types: symmetric key encryption which uses the same key to encrypt and decrypt, and public key encryption which uses separate public and private keys. Secure Socket Layer (SSL) and Transport Layer Security (TLS) are commonly used protocols that ensure sensitive data transmitted on the internet is securely encrypted.
Ss
Computer encryption uses cryptography to secure online transactions. There are two main types of encryption: symmetric-key encryption where both computers share the same key, and public-key encryption which uses different keys for encryption and decryption. Encryption encodes data during transmission while authentication verifies the identity of the sender and confirms the data has not been altered. Together, encryption and authentication create a secure online environment for sharing information.
Topic1 substitution transposition-techniques
This document discusses substitution and transposition encryption techniques. Substitution techniques replace plaintext characters with other characters, numbers, or symbols, changing character identity but not position. Transposition techniques rearrange the character positions in the plaintext, changing character position but not identity. Examples of substitution techniques include the Caesar cipher, monoalphabetic ciphers, Playfair cipher, and Vigenère cipher. Transposition techniques examples are the rail fence cipher and row transposition cipher.
cryptography
Cryptography involves converting plain text into cipher text to secure communication. There are two main types: private/symmetric key cryptography uses a single shared key for encryption and decryption, while public/asymmetric key cryptography uses two keys - a public key to encrypt and a private key to decrypt. Private key cryptography is faster but requires secure key exchange, while public key allows communication without pre-shared keys and enables authentication and digital signatures.
Cryptography.pptx
Cryptography is used for authentication, privacy, integrity, and non-repudiation. It involves encoding messages so that only authorized parties can access it. Cryptography converts plain intelligible data into unintelligible data using encryption algorithms and keys, and then retransforms the data back into its original form using decryption. There are two main types of cryptosystems: symmetric which uses the same key to encrypt and decrypt, and asymmetric which uses different public and private keys.
PresentationonCRYPTOGRAPHYppt.ppt - Read-Only - Compatibility Mode.ppt
This document provides an overview of cryptography. It defines cryptography as the practice of hiding information and discusses its purposes, including authentication, privacy, integrity, and non-repudiation. The document outlines the basic architecture of cryptography, including secret key cryptography, public key cryptography, hash functions, and types of cryptographic attacks. It describes the processes of public/private key cryptography and different types of cryptographic algorithms.
Cryptography
Cryptography is the science of using mathematics to encrypt and decrypt data. It enables sensitive information to be stored or transmitted securely by encoding it into an unintelligible format called cipher text that can only be decoded by authorized parties. Some key cryptography terms include plain text, which is the original understandable message, cipher text, which is the encrypted message, and a key, which is critical information known only to the sender and receiver that is used in the encoding and decoding processes.
Cryptography
This document discusses cryptography and its various aspects. Cryptography is the science of securing communication and information. It involves encryption to encode data into an unreadable format and decryption to decode it. There are different types of cryptography like symmetric key, public key, and hash functions. Symmetric key uses a single key for encryption and decryption while public key uses different keys. Hash functions create a unique digest from data but the data cannot be recovered from the digest. Cryptography provides security features like authentication, privacy, integrity and non-repudiation. Keys are numerical values used in encryption algorithms. The document outlines advantages like privacy and disadvantages like the time needed for encryption and decryption.
CSE CRYPTOGRAPHY ppt - Copy.pptx
This document provides an overview of cryptography. It begins by defining cryptography as the practice of hiding information by converting intelligible data into unintelligible data. The main purposes of cryptography are authentication, privacy/confidentiality, integrity, and non-repudiation. The document then discusses secret key cryptography, which uses a single key for encryption and decryption, and public key cryptography, which uses separate public and private keys. It also mentions some common cryptographic algorithms and attacks, such as cipher text only attacks and known plaintext attacks. Finally, the conclusion states that different algorithms provide security services and that private or public key cryptography can be used depending on requirements for speed or secrecy.
Cryptography
The document provides information about the members of a group - Abdullah Rashid Baig, Adnan Haider, Muhammad Zakria, and Muhammad Zeeshan Khan. It then provides definitions and explanations of cryptography, cryptographic algorithms, encryption, decryption, plaintext, ciphertext, keys, secret key cryptography, public key cryptography, hashing, digital signatures, and security goals like confidentiality, authentication, integrity, availability, non-repudiation, and access control. It also discusses potential attacks on cryptography like viruses, traffic analysis, electromagnetic detection, and dictionary attacks.
Cryptography 130919084510-phpapp02
This document summarizes key concepts in cryptography. It discusses plaintext, encryption, ciphertext, decryption, keys, cryptanalysis, cryptographers, cryptanalysts, and cryptology. It also differentiates between symmetric and asymmetric key cryptography, and describes classical ciphers like transposition and substitution ciphers as well as modern ciphers like stream and block ciphers. It provides examples of cryptanalysis techniques like known plaintext analysis and discusses the threat of acoustic cryptanalysis. Throughout it emphasizes the importance of cryptography for network security and secure data transmission.
CRYPTOGRAPHY-PAYAL CHOPRA.ppt
This document provides an overview of cryptography. Cryptography is the practice of hiding information to ensure confidentiality, integrity, and authentication. There are two main types: secret key cryptography which uses a single key for encryption and decryption, and public key cryptography which uses separate public and private keys. Popular cryptographic algorithms include RSA and hash functions. Cryptography aims to provide security against common attacks such as ciphertext-only attacks.
Asif
Cryptography is the science of securing communication and information. It uses techniques like encryption and decryption to transform information into an unreadable format, called cipher text. There are different types of cryptography like secret key cryptography which uses a single key for encryption and decryption, and public key cryptography which uses different keys for encryption and decryption. Cryptography ensures security requirements like authentication, privacy, integrity and non-repudiation of digital information. It has advantages like privacy of communication but also disadvantages like the time needed for encryption and decryption.
More Related Content
What's hot
Cryptography
Cryptography is the practice and study of hiding information. It involves encrypting plain text into unintelligible cipher text using an algorithm or key, and decrypting cipher text back into plain text. There are two main types of cryptography: symmetric key cryptography which uses the same key to encrypt and decrypt, and asymmetric key cryptography which uses different keys. Cryptography improves security, keeps communications private, and ensures privacy by encoding messages in a way that can only be read by those possessing the decryption key.
CyberGhost VPN Encryption Guide
Encryption is a process of encoding information in a way that only authorized parties can read it. It was first used over 2000 years ago by Julius Caesar and ancient Greeks to hide military communications. There are two main types of encryption - symmetric encryption which uses the same key to encrypt and decrypt, and public-key encryption which uses a public key to encrypt and a private key to decrypt. Encryption is now widely used to protect data on computers and transmitted over networks by individuals, companies and governments.
WHAT IS CRYPTOGRAPHY - A COMPREHENSIVE GUIDE
Get COUPON CODES LINKEDIN10 visit https://www.sprintzeal.com/blog/what-is-cryptography
Introduction to Cryptography
Cryptography is a technique of secure communications that allows a particular sender and intended recipient of a message to view its contents. The term is obtained from the Greek word “Kryptos”, which means “hidden, secret”. More generally, cryptography is about establishing and analyzing protocols that avert third parties or the public from reading personal messages. Moreover, it works on the various aspects of information security such as data confidentiality, data integrity, authentication, and non-repudiation.
cryptography and network security
Cryptography is the practice of secure communication in the presence of attackers. It allows people like Andy to send private messages to friends like Sam over public channels like WhatsApp. Encryption uses algorithms and keys to encode messages during transmission and decrypt them upon arrival. Symmetric key cryptography uses a shared private key while asymmetric key cryptography uses separate public and private keys. Popular algorithms include RSA, which uses a variable key size, and AES for block encryption. Tokenization substitutes sensitive data with non-sensitive tokens to enhance security, and JSON web tokens (JWTs) are commonly used to securely transmit information between parties in a JSON object and authenticate users via bearer authorization in headers.
Data encryption
Encryption is a technique that scrambles data to make it unreadable by anyone without access to the decryption key. There are different types of encryption methods, including hashing, symmetric encryption (using a single private key), and asymmetric encryption (using a public and private key pair). Common encryption algorithms include Triple DES, RSA, Blowfish, Twofish, and AES. The future of encryption involves new techniques like honey encryption and quantum key distribution to stay ahead of evolving cyber threats.
Applied Cryptography
This document provides an overview of applied cryptography. It begins with definitions of cryptography and discusses techniques like Caesar ciphers and attacks on those ciphers. It then covers cryptographic objectives of confidentiality, integrity, authenticity and non-repudiation. The document summarizes hash functions, symmetric cryptography using keys, asymmetric cryptography using public/private key pairs, digital signatures, and authentication techniques. It provides examples of encrypting and decrypting messages as well as generating and verifying digital signatures for sender authentication and message integrity.
F16 cs61 cryptography
Cryptography is the study of securing communication and information. It uses protocols, algorithms, and strategies to hide sensitive information from unauthorized access and enable verification of every component of a communication. The primary functions of cryptography are privacy, authentication, integrity, non-repudiation, and key exchange. While cryptography provides advantages in security and verification, it also has limitations such as vulnerability to brute force attacks and risk of losing access to data if secret keys are lost.
Eng Slide3
Encryption allows for secure transmission of sensitive data over the internet. Symmetric key encryption uses the same key between two parties, while public key encryption uses a public and private key pair. Modern encryption on websites is indicated by URLs starting with "https" and a padlock icon, using protocols like TLS to securely transmit data like financial information. Hashing algorithms also play a role in encryption by generating hash values from inputs that cannot easily be reversed without the original data.
Encryption
Encryption encodes information to protect it from unauthorized access. It involves two processes - encryption scrambles the information using an algorithm, while decryption reverses the process to restore the original information. There are two main methods: symmetric key encryption uses the same key to encrypt and decrypt, while asymmetric key encryption uses separate public and private keys.
Sw2 week12
Encryption works by using keys to scramble data so it can only be read by authorized parties. There are two main types: symmetric key encryption which uses the same key to encrypt and decrypt, and public key encryption which uses separate public and private keys. Secure Socket Layer (SSL) and Transport Layer Security (TLS) are commonly used protocols that ensure sensitive data transmitted on the internet is securely encrypted.
Ss
Computer encryption uses cryptography to secure online transactions. There are two main types of encryption: symmetric-key encryption where both computers share the same key, and public-key encryption which uses different keys for encryption and decryption. Encryption encodes data during transmission while authentication verifies the identity of the sender and confirms the data has not been altered. Together, encryption and authentication create a secure online environment for sharing information.
What's hot (11)
Similar to Cryptography (raza hassan)
Topic1 substitution transposition-techniques
This document discusses substitution and transposition encryption techniques. Substitution techniques replace plaintext characters with other characters, numbers, or symbols, changing character identity but not position. Transposition techniques rearrange the character positions in the plaintext, changing character position but not identity. Examples of substitution techniques include the Caesar cipher, monoalphabetic ciphers, Playfair cipher, and Vigenère cipher. Transposition techniques examples are the rail fence cipher and row transposition cipher.
cryptography
Cryptography involves converting plain text into cipher text to secure communication. There are two main types: private/symmetric key cryptography uses a single shared key for encryption and decryption, while public/asymmetric key cryptography uses two keys - a public key to encrypt and a private key to decrypt. Private key cryptography is faster but requires secure key exchange, while public key allows communication without pre-shared keys and enables authentication and digital signatures.
Cryptography.pptx
Cryptography is used for authentication, privacy, integrity, and non-repudiation. It involves encoding messages so that only authorized parties can access it. Cryptography converts plain intelligible data into unintelligible data using encryption algorithms and keys, and then retransforms the data back into its original form using decryption. There are two main types of cryptosystems: symmetric which uses the same key to encrypt and decrypt, and asymmetric which uses different public and private keys.
PresentationonCRYPTOGRAPHYppt.ppt - Read-Only - Compatibility Mode.ppt
This document provides an overview of cryptography. It defines cryptography as the practice of hiding information and discusses its purposes, including authentication, privacy, integrity, and non-repudiation. The document outlines the basic architecture of cryptography, including secret key cryptography, public key cryptography, hash functions, and types of cryptographic attacks. It describes the processes of public/private key cryptography and different types of cryptographic algorithms.
Cryptography
Cryptography is the science of using mathematics to encrypt and decrypt data. It enables sensitive information to be stored or transmitted securely by encoding it into an unintelligible format called cipher text that can only be decoded by authorized parties. Some key cryptography terms include plain text, which is the original understandable message, cipher text, which is the encrypted message, and a key, which is critical information known only to the sender and receiver that is used in the encoding and decoding processes.
Cryptography
This document discusses cryptography and its various aspects. Cryptography is the science of securing communication and information. It involves encryption to encode data into an unreadable format and decryption to decode it. There are different types of cryptography like symmetric key, public key, and hash functions. Symmetric key uses a single key for encryption and decryption while public key uses different keys. Hash functions create a unique digest from data but the data cannot be recovered from the digest. Cryptography provides security features like authentication, privacy, integrity and non-repudiation. Keys are numerical values used in encryption algorithms. The document outlines advantages like privacy and disadvantages like the time needed for encryption and decryption.
CSE CRYPTOGRAPHY ppt - Copy.pptx
This document provides an overview of cryptography. It begins by defining cryptography as the practice of hiding information by converting intelligible data into unintelligible data. The main purposes of cryptography are authentication, privacy/confidentiality, integrity, and non-repudiation. The document then discusses secret key cryptography, which uses a single key for encryption and decryption, and public key cryptography, which uses separate public and private keys. It also mentions some common cryptographic algorithms and attacks, such as cipher text only attacks and known plaintext attacks. Finally, the conclusion states that different algorithms provide security services and that private or public key cryptography can be used depending on requirements for speed or secrecy.
Cryptography
The document provides information about the members of a group - Abdullah Rashid Baig, Adnan Haider, Muhammad Zakria, and Muhammad Zeeshan Khan. It then provides definitions and explanations of cryptography, cryptographic algorithms, encryption, decryption, plaintext, ciphertext, keys, secret key cryptography, public key cryptography, hashing, digital signatures, and security goals like confidentiality, authentication, integrity, availability, non-repudiation, and access control. It also discusses potential attacks on cryptography like viruses, traffic analysis, electromagnetic detection, and dictionary attacks.
Cryptography 130919084510-phpapp02
This document summarizes key concepts in cryptography. It discusses plaintext, encryption, ciphertext, decryption, keys, cryptanalysis, cryptographers, cryptanalysts, and cryptology. It also differentiates between symmetric and asymmetric key cryptography, and describes classical ciphers like transposition and substitution ciphers as well as modern ciphers like stream and block ciphers. It provides examples of cryptanalysis techniques like known plaintext analysis and discusses the threat of acoustic cryptanalysis. Throughout it emphasizes the importance of cryptography for network security and secure data transmission.
CRYPTOGRAPHY-PAYAL CHOPRA.ppt
This document provides an overview of cryptography. Cryptography is the practice of hiding information to ensure confidentiality, integrity, and authentication. There are two main types: secret key cryptography which uses a single key for encryption and decryption, and public key cryptography which uses separate public and private keys. Popular cryptographic algorithms include RSA and hash functions. Cryptography aims to provide security against common attacks such as ciphertext-only attacks.
Asif
Cryptography is the science of securing communication and information. It uses techniques like encryption and decryption to transform information into an unreadable format, called cipher text. There are different types of cryptography like secret key cryptography which uses a single key for encryption and decryption, and public key cryptography which uses different keys for encryption and decryption. Cryptography ensures security requirements like authentication, privacy, integrity and non-repudiation of digital information. It has advantages like privacy of communication but also disadvantages like the time needed for encryption and decryption.
crypto-105058445051058480051448005540405
This document provides an overview of cryptography. It discusses encryption and decryption processes that convert plaintext into unreadable ciphertext and vice versa using keys. Symmetric cryptography uses the same key for encryption and decryption, while asymmetric cryptography uses public and private key pairs. The document also examines different cryptographic techniques like transposition ciphers, substitution ciphers, stream ciphers and block ciphers. It analyzes cryptanalysis methods for breaking ciphers without keys and discusses acoustic cryptanalysis attacks exploiting computer keyboard sounds. In conclusion, it states cryptography should be used to prevent data leakage and secure transmissions over networks.
Cryptography
Cryptography is the science of using mathematics to encrypt and decrypt data.
Cryptography enables you to store sensitive information or transmit it across insecure networks so that it cannot be read by anyone except the intended recipient.
Data encryption
Encryption is a technique for transforming information on a computer in such a way that it becomes not understandable.
Pavan
The document discusses various topics in cryptography including encryption, decryption, symmetric and asymmetric cryptography. It defines plain text, cipher text, encryption, decryption and keys. It describes different cryptographic techniques like transposition cipher, substitution cipher, stream cipher and block cipher. It also discusses cryptanalysis, acoustic cryptanalysis and ways to prevent it like using rubber keyboards or acoustic cases. It concludes saying cryptography should be used to protect private data and communications.
Cryptography
The document discusses various topics in cryptography including encryption, decryption, symmetric and asymmetric cryptography. It defines common cryptography terms like plaintext, ciphertext, encryption, decryption. It explains different encryption techniques like transposition cipher, substitution cipher, stream cipher and block cipher. It also discusses public key cryptography and cryptanalysis. The document concludes by mentioning some techniques to implement network security using cryptography and potential constructive and destructive uses of acoustic cryptanalysis.
Cryptography ppt
The internet is the internationally connected network of computer networks with addresses that are administrated by IANA
Evolution of Cryptography and Cryptographic techniques
1) Cryptography originated from the inherent human needs to communicate selectively and share information privately.
2) Early forms of cryptography included hieroglyphs and cipher techniques used by ancient Egyptian and Roman civilizations.
3) Modern cryptography is based on mathematical concepts from fields like number theory and uses algorithms like symmetric encryption, asymmetric encryption, hashing, and steganography to provide security services like confidentiality, integrity, authentication, and non-repudiation.
Cn ppt
This document provides an overview of steganography and its modules for a PowerPoint presentation. Steganography is the art of hiding communication by concealing messages within other information. It uses various techniques to hide information in digital images or audio files. The presentation covers the encryption and decryption modules used for steganography. Encryption hides data in a host file using an algorithm while decryption extracts the data using the reverse algorithm. The modules create an application for encrypting and decrypting data files within media files to perform steganography.
PresentationonCRYPTOGRAPHYppt.ppt
This document provides an overview of cryptography. It begins with defining cryptography as the practice of hiding information and discusses its purposes, including authentication, privacy, integrity, and non-repudiation. It then describes the basic architecture and types of cryptography, including secret key cryptography, public key cryptography, and hash functions. The document outlines the process of cryptography and different algorithm types, including public/private key cryptography and hash functions. It concludes by discussing different types of attacks on cryptography and thanking the audience.
Similar to Cryptography (raza hassan) (20)
PresentationonCRYPTOGRAPHYppt.ppt - Read-Only - Compatibility Mode.ppt
PresentationonCRYPTOGRAPHYppt.ppt - Read-Only - Compatibility Mode.ppt
Evolution of Cryptography and Cryptographic techniques
Evolution of Cryptography and Cryptographic techniques
Recently uploaded
skeleton System.pdf (skeleton system wow)
🔥🔥🔥🔥🔥🔥🔥🔥🔥
إضغ بين إيديكم من أقوى الملازم التي صممتها
ملزمة تشريح الجهاز الهيكلي (نظري 3)
💀💀💀💀💀💀💀💀💀💀
تتميز هذهِ الملزمة بعِدة مُميزات :
1- مُترجمة ترجمة تُناسب جميع المستويات
2- تحتوي على 78 رسم توضيحي لكل كلمة موجودة بالملزمة (لكل كلمة !!!!)
#فهم_ماكو_درخ
3- دقة الكتابة والصور عالية جداً جداً جداً
4- هُنالك بعض المعلومات تم توضيحها بشكل تفصيلي جداً (تُعتبر لدى الطالب أو الطالبة بإنها معلومات مُبهمة ومع ذلك تم توضيح هذهِ المعلومات المُبهمة بشكل تفصيلي جداً
5- الملزمة تشرح نفسها ب نفسها بس تكلك تعال اقراني
6- تحتوي الملزمة في اول سلايد على خارطة تتضمن جميع تفرُعات معلومات الجهاز الهيكلي المذكورة في هذهِ الملزمة
واخيراً هذهِ الملزمة حلالٌ عليكم وإتمنى منكم إن تدعولي بالخير والصحة والعافية فقط
كل التوفيق زملائي وزميلاتي ، زميلكم محمد الذهبي 💊💊
🔥🔥🔥🔥🔥🔥🔥🔥🔥
THE SACRIFICE HOW PRO-PALESTINE PROTESTS STUDENTS ARE SACRIFICING TO CHANGE T...
The recent surge in pro-Palestine student activism has prompted significant responses from universities, ranging from negotiations and divestment commitments to increased transparency about investments in companies supporting the war on Gaza. This activism has led to the cessation of student encampments but also highlighted the substantial sacrifices made by students, including academic disruptions and personal risks. The primary drivers of these protests are poor university administration, lack of transparency, and inadequate communication between officials and students. This study examines the profound emotional, psychological, and professional impacts on students engaged in pro-Palestine protests, focusing on Generation Z's (Gen-Z) activism dynamics. This paper explores the significant sacrifices made by these students and even the professors supporting the pro-Palestine movement, with a focus on recent global movements. Through an in-depth analysis of printed and electronic media, the study examines the impacts of these sacrifices on the academic and personal lives of those involved. The paper highlights examples from various universities, demonstrating student activism's long-term and short-term effects, including disciplinary actions, social backlash, and career implications. The researchers also explore the broader implications of student sacrifices. The findings reveal that these sacrifices are driven by a profound commitment to justice and human rights, and are influenced by the increasing availability of information, peer interactions, and personal convictions. The study also discusses the broader implications of this activism, comparing it to historical precedents and assessing its potential to influence policy and public opinion. The emotional and psychological toll on student activists is significant, but their sense of purpose and community support mitigates some of these challenges. However, the researchers call for acknowledging the broader Impact of these sacrifices on the future global movement of FreePalestine.
HYPERTENSION - SLIDE SHARE PRESENTATION.
IT WILL BE HELPFULL FOR THE NUSING STUDENTS
IT FOCUSED ON MEDICAL MANAGEMENT AND NURSING MANAGEMENT.
HIGHLIGHTS ON HEALTH EDUCATION.
Stack Memory Organization of 8086 Microprocessor
The stack memory organization of 8086 microprocessor.
مصحف القراءات العشر أعد أحرف الخلاف سمير بسيوني.pdf
مصحف أحرف الخلاف للقراء العشرةأعد أحرف الخلاف بالتلوين وصلا سمير بسيوني غفر الله له
How Barcodes Can Be Leveraged Within Odoo 17
In this presentation, we will explore how barcodes can be leveraged within Odoo 17 to streamline our manufacturing processes. We will cover the configuration steps, how to utilize barcodes in different manufacturing scenarios, and the overall benefits of implementing this technology.
A Visual Guide to 1 Samuel | A Tale of Two Hearts
These slides walk through the story of 1 Samuel. Samuel is the last judge of Israel. The people reject God and want a king. Saul is anointed as the first king, but he is not a good king. David, the shepherd boy is anointed and Saul is envious of him. David shows honor while Saul continues to self destruct.
Traditional Musical Instruments of Arunachal Pradesh and Uttar Pradesh - RAYH...
Traditional Musical Instruments of Arunachal Pradesh and Uttar Pradesh
Beyond Degrees - Empowering the Workforce in the Context of Skills-First.pptx
Iván Bornacelly, Policy Analyst at the OECD Centre for Skills, OECD, presents at the webinar 'Tackling job market gaps with a skills-first approach' on 12 June 2024
Andreas Schleicher presents PISA 2022 Volume III - Creative Thinking - 18 Jun...
Andreas Schleicher, Director of Education and Skills at the OECD presents at the launch of PISA 2022 Volume III - Creative Minds, Creative Schools on 18 June 2024.
Benner "Expanding Pathways to Publishing Careers"
This presentation was provided by Rebecca Benner, Ph.D., of the American Society of Anesthesiologists, for the second session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session Two: 'Expanding Pathways to Publishing Careers,' was held June 13, 2024.
Gender and Mental Health - Counselling and Family Therapy Applications and In...
A proprietary approach developed by bringing together the best of learning theories from Psychology, design principles from the world of visualization, and pedagogical methods from over a decade of training experience, that enables you to: Learn better, faster!
Educational Technology in the Health Sciences
Plenary presentation at the NTTC Inter-university Workshop, 18 June 2024, Manila Prince Hotel.
Recently uploaded (20)
THE SACRIFICE HOW PRO-PALESTINE PROTESTS STUDENTS ARE SACRIFICING TO CHANGE T...
THE SACRIFICE HOW PRO-PALESTINE PROTESTS STUDENTS ARE SACRIFICING TO CHANGE T...
NEWSPAPERS - QUESTION 1 - REVISION POWERPOINT.pptx
NEWSPAPERS - QUESTION 1 - REVISION POWERPOINT.pptx
مصحف القراءات العشر أعد أحرف الخلاف سمير بسيوني.pdf
مصحف القراءات العشر أعد أحرف الخلاف سمير بسيوني.pdf
Traditional Musical Instruments of Arunachal Pradesh and Uttar Pradesh - RAYH...
Traditional Musical Instruments of Arunachal Pradesh and Uttar Pradesh - RAYH...
Beyond Degrees - Empowering the Workforce in the Context of Skills-First.pptx
Beyond Degrees - Empowering the Workforce in the Context of Skills-First.pptx
Andreas Schleicher presents PISA 2022 Volume III - Creative Thinking - 18 Jun...
Andreas Schleicher presents PISA 2022 Volume III - Creative Thinking - 18 Jun...
Gender and Mental Health - Counselling and Family Therapy Applications and In...
Gender and Mental Health - Counselling and Family Therapy Applications and In...
Cryptography (raza hassan)
- 1. BLUE WHALE RAZA HASSAN KALO 15TC49 SHEERAZ ALI MEMON 15TC57
- 3. Cryptography Encryption/Decryption Cryptography types Encryption/Decryption Techniques Block Cipher OVER VIEW:
- 4. Cryptography: Cryptography is the science of using mathematics to encrypt and decrypt data. Cryptography enables you to store sensitive information or transmit it across insecure network so that it can’t be read by anyone except the intended recipient.
- 5. VOCABULLARY Plaintext: Data that can be read and understood without any special measures. Encryption: The method of disguising plaintext in such a way as to hide it’s substance. Decryption: The process of reverting cipher text to its original plain text. Cipher text: The encrypted version of the message. Key: Some secret piece of information that customize how the cipher text is.
- 7. Why Use: For “Secret Writing” To establish a shared secret when other people(eavesdroper)are listening. Types: Mainly classified into two types 1. Symmetric key cryptography Same key is used by both parties. Advantage: Simpler and Faster Disadv: Less secured 2.Asymmetric key cryptography Two different keys are used,user can get the key from certificate authority. Advantage: More secured,Authentication Disadv:Relatively Complex
- 10. Symmetric
- 11. Asymmetric
- 12. Traditional ciphers Substitution cipher Transposition ciphers Substitution cipher: A technique in which letters/numbers/symbols of plain text are replaced by other letters/numbers/symbols. e.g: A-D , T-Z 2-5 , 3-6 Transposition ciphers: In this position of letters/numbers/symbol are changed with one another.
- 13. • Plain text: Meet me after party • Cipher text: Temeemefaptryrat • Key used: 421635
- 14. Applications: Defence services Secure data manipulation E-commerce Internet payment systems Access control Data security
- 15. Conclusion: By using of encryption techniques a fair unit of confidentiality, authentication, integrity ,access control and availability of data is maintained. By using cryptography techniques ,will get secure your personal data transmission as well as transaction and much more.