"In cryptography, encryption is the process of encoding information... Ideally, only authorized parties can decipher a ciphertext back to plaintext and access the original information."
The process of encoding data in such a way that only authorized parties can read it.
What is Encryption: This topic provides an overview of encryption and its role in protecting data.
Symmetric Encryption: This topic covers symmetric encryption algorithms, where a single key is used for both encryption and decryption.
Asymmetric Encryption: This topic covers asymmetric encryption algorithms, where a public key is used for encryption and a private key is used for decryption.
Hash Functions: This topic provides an overview of hash functions and their role in cybersecurity.
Key Management: This topic covers key management practices for encryption.
Key Exchange: This topic covers methods for exchanging keys between parties that are communicating via encrypted channels.
Digital Signatures: This topic covers digital signatures and their role in ensuring data integrity.
Block Ciphers: This topic covers block ciphers, which are a type of symmetric encryption algorithm.
Stream Ciphers: This topic covers stream ciphers, another type of symmetric encryption algorithm.
Public Key Infrastructure (PKI): This topic covers PKI, which is a system that manages digital certificates and public keys.
Cryptanalysis: This topic covers cryptanalysis, the art of breaking encrypted messages.
Quantum Cryptography: This topic covers quantum cryptography, a cutting-edge technology that ensures secure communication in the era of quantum computing.
Transport Layer Security (TLS): This topic covers TLS, a security protocol used to secure communication over the internet.
Perfect Forward Secrecy: This topic covers perfect forward secrecy (PFS), a practice that ensures that the compromise of one key will not compromise past or future keys.
Post-Quantum Cryptography: This topic covers post-quantum cryptography, which is the study of cryptographic algorithms that are resistant to attacks by quantum computers.
Symmetric Encryption: Symmetric encryption uses the same key for both encryption and decryption. It is the most commonly used form of encryption, and is efficient for securing data that will be stored or transmitted.
Asymmetric Encryption: Asymmetric encryption uses two different keys for encryption and decryption, a public key and a private key. The public key can be shared with anyone, while the private key must be kept secret. Asymmetric encryption is typically used for securing communication between two parties who have not previously exchanged information.
Hashing: Hashing is a technique used to create a unique digital representation of data. It involves passing the data through a hashing algorithm to produce a hash value, which is a fixed-length string of characters. Hashing is commonly used to verify the integrity of digital data, such as passwords.
Quantum Cryptography: Quantum cryptography involves using the principles of quantum mechanics to encrypt and decrypt data. It uses the properties of quantum mechanics to generate secure keys and verify the integrity of data.
Public Key Infrastructure (PKI): PKI is a system of digital certificates and public key cryptography that enables secure communication between two parties. It is commonly used for secure online transactions, such as online banking.
One-Time Pad (OTP): OTP is a type of symmetric encryption that uses a random key that is generated only once and then discarded. OTP provides strong encryption, but is not practical for most applications because of the large key size required.
Steganography: Steganography involves hiding data within another file, such as an image or audio file. This can be used to bypass detection methods, as the encoded information is not readily visible.
Homomorphic Encryption: Homomorphic encryption allows computations to be performed on encrypted data without the need for decryption. This technique can be used to enable secure cloud computing, as sensitive data can be processed without being exposed to potential attackers.
Elliptic Curve Cryptography (ECC): ECC is a type of public-key cryptography that uses elliptic curves instead of large prime numbers. ECC is more efficient than traditional public-key encryption methods and can provide the same level of security with smaller key sizes.
Obfuscation: Obfuscation is a technique used to intentionally make software code difficult to understand or reverse engineer. Obfuscation can be used to protect intellectual property or to prevent attackers from identifying vulnerabilities in software.
"Encryption does not itself prevent interference but denies the intelligible content to a would-be interceptor."
"For technical reasons, an encryption scheme usually uses a pseudo-random encryption key generated by an algorithm."
"It is possible to decrypt the message without possessing the key but, for a well-designed encryption scheme, considerable computational resources and skills are required."
"An authorized recipient can easily decrypt the message with the key provided by the originator to recipients but not to unauthorized users."
"Historically, various forms of encryption have been used to aid in cryptography. Early encryption techniques were often used in military messaging."
"Since then, new techniques have emerged and become commonplace in all areas of modern computing."
"Modern encryption schemes use the concepts of public-key and symmetric-key."
"Modern encryption techniques ensure security because modern computers are inefficient at cracking the encryption."
"This process converts the original representation of the information, known as plaintext..."
"...into an alternative form known as ciphertext."
"Encryption does not itself prevent interference but denies the intelligible content to a would-be interceptor."
"For technical reasons, an encryption scheme usually uses a pseudo-random encryption key generated by an algorithm."
"...for a well-designed encryption scheme, considerable computational resources and skills are required."
"An authorized recipient can easily decrypt the message with the key provided by the originator to recipients but not to unauthorized users."
"Early encryption techniques were often used in military messaging."
"Since then, new techniques have emerged and become commonplace in all areas of modern computing."
"Modern encryption schemes use the concepts of public-key and symmetric-key."
"Modern encryption techniques ensure security because modern computers are inefficient at cracking the encryption."
"In cryptography, encryption is the process of encoding information..."