Encryption
Encryption converts data into an illegible format, ensuring that only those with the appropriate decryption key can access it. It is crucial to secure data during transfer (for example, on the Internet) and storage (for example, on servers). Without the decryption key, encrypted data remains inaccessible, protecting sensitive information.
Symmetrical encryption:
- Uses the same key for encryption and decryption
- Faster and more efficient for large data transfers
- Requires secure sharing of the key between the trust parts
- Used to secure communication on VPNs, file encryption or database protection
- Popular algorithms: AES, des, Triple des (3des) and Blowfish
Asymmetrical encryption:
- Use two keys – a public key (to encrypt data) and a private key (to decrypt data)
- More secure because it eliminates the need to share secret keys
- Well suited for smaller data exchanges and digital signatures, offering authentication alongside encryption
- Common algorithms include RSA, ECC and digital signature algorithm (DSA)
Block and distribute figures:
- Block ciphers (for example, AES): encrypt data in fixed blocks, which makes it highly secure for stored data or HTTPS communications.
- Stream Ciphers (for example, RC4): encrypt data a little bit, suitable for real -time data such as live video or secure messaging.
Chopping
Haping is a unidirectional process that converts the input data into a fixed length chain (hash). It is commonly used to check data integrity, detect falsification and safely store passwords. Unlike encryption, the hasdes cannot be reversed to reveal the original data.
- MD5: Fast but obsolete due to weaknesses against collision attacks (different entries producing the same hash).
- SHA-1: Produces 160-bit hops; However, it is obsolete due to security vulnerabilities.
- SHA-256 (part of SHA-2): a more secure and widely used algorithm ideal for blockchain, SSL certificates and data storage.
- Sha-3: offers improved security based on Keccak algorithm, offering a robust choice for IoT and post-quantum encryption systems.
- BCRYPT: Includes integrated salting and adaptations to computer advances, making it an essential choice for storage of passwords.
- Argon: Winner of the password hash competition, offers advanced personalization and resistance to cracking attempts.
How is the hash different from the sum of control?
The hash and the sum of control have certain similarities for sure. The amount of control is used to logically include all the bits of data transferred to ensure that the original data is not involuntarily corrupt. The sum of control draws a short data element from a long shape of shape.
The sum of control is not designed to be one -way. With a certain motivation, the sum of control can be reversed by people with the intention. The hash, on the other hand, is designed to be difficult to reverse the calculation. The hash is mainly designed to create a unique digital imprint of data and is widely used in password safety. The amount of control is designed only to identify data integrity during transmission to ensure that there is no transmission error.
The problem with the sums of control is: the sums of control use the xoring of 1 and 0 or it has the number of 1 and 0 or similar techniques. The problem is that if you return two bits from 0 to 1 and 1 to 0, the sum of control would always remain the same. The fact is that it is almost always possible to modify the data and keep the sum of control identical. And, the sums of control have a good chance of collision. So, if you don't want a collision, the hasdies are your best bet even if the hashers also have collisions.
Salot the hash
A technique of adding a random chain of letters and numbers (called salt) to the password itself. This random chain must be stored in a separate and recovered database added and added to the password before its hatching. By salting the hash, we can make sure that users with the same password have different hash, which makes it difficult for hackers to use precalculated tables (example: rainbow tables) to break the hash.
Can encrypted data be chopped?
Yes, encrypted data can be chopped. But why is it necessary? This involves checking whether the encrypted data is corrupt or modified in any way. However, it is not often that the encrypted data is chopped because the encryption itself offers solid data protection.
I hope it's useful, thank you.
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At Learnopoly, Finn has championed a mission to deliver unbiased, in-depth reviews of online courses that empower learners to make well-informed decisions. With over a decade of experience in financial services, he has honed his expertise in strategic partnerships and business development, cultivating both a sharp analytical perspective and a collaborative spirit. A lifelong learner, Finn’s commitment to creating a trusted guide for online education was ignited by a frustrating encounter with biased course reviews.