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What is SHA-256? Learn SHA-256 in one minute
SHA-256, a cryptographic hash function, generates a unique 256-bit hexadecimal "fingerprint" from input data, making it crucial for password protection and digital signature verification.
Oct 24, 2024 at 07:39 am
What is SHA-256?
SHA-256, commonly pronounced sha-two-fifty-six, is a cryptographic hash function designed by the National Security Agency (NSA). It is one of the most widely used hash functions today. Here's a simple explanation of SHA-256:
- Input: SHA-256 takes an input of any size, typically a message, file, or string of data.
- Processing: The input is divided into 512-bit blocks. Each block undergoes multiple rounds of hashing using a complex mathematical algorithm.
- Output: After processing all the blocks, SHA-256 produces a fixed-length output called a "fingerprint" or "hash," represented as a 256-bit hexadecimal number.
- Deterministic: SHA-256 is deterministic. This means that providing the same input always produces the same hash.
- Cryptographic: SHA-256 is a cryptographic hash function. It is designed to be irreversible. It is computationally infeasible to determine the original input from the hash.
Applications: SHA-256 is used in a wide range of applications, including:
a. Password protection: Hashing passwords provides a secure way to store user passwords without storing the plaintext versions.
b. Digital signatures: SHA-256 is used to create digital signatures that verify the authenticity and integrity of digital documents.
c. Blockchain and Cryptocurrency: SHA-256 is utilized in blockchain technology to secure transactions and create unique cryptocurrency addresses.
d. File verification: SHA-256 can be used to verify the integrity of files by comparing their hashes before and after transmission or storage.
Disclaimer:info@kdj.com
The information provided is not trading advice. kdj.com does not assume any responsibility for any investments made based on the information provided in this article. Cryptocurrencies are highly volatile and it is highly recommended that you invest with caution after thorough research！
If you believe that the content used on this website infringes your copyright, please contact us immediately (info@kdj.com) and we will delete it promptly.
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