What is the difference between hash functions and encryption?
Hash functions and encryption both transform data, but they serve different purposes. Hash functions create a fixed-size output from input data, making it irreversible, while encryption transforms data into a secure format that can be reversed with a key.
Can you give me examples of where each is used?
Sure! Hash functions are commonly used in data integrity checks and password storage, while encryption is used for securing sensitive data during transmission, like in online banking.
Are hash functions secure?
Hash functions can be secure, but their strength depends on the algorithm used. Strong hash functions are resistant to collisions and pre-image attacks.
What are some common hash functions?
Common hash functions include MD5, SHA-1, and SHA-256. However, MD5 and SHA-1 are considered weak and not recommended for security purposes.
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