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Hash Comparison
Expected Hash
Actual Hash
All Hashes
MD5 (128-bit)
SHA-1 (160-bit)
SHA-256 (256-bit)
SHA-512 (512-bit)
Frequently Asked Questions
What is a hash function?
A hash function takes input data of any size and produces a fixed-size output (hash). It's one-way — you cannot reverse a hash to get the original data.
Which hash algorithm should I use?
SHA-256 is recommended for most purposes. MD5 and SHA-1 are considered broken for security use but still useful for checksums. SHA-512 provides extra security margin.
What is HMAC?
HMAC (Hash-based Message Authentication Code) combines a hash function with a secret key to verify both data integrity and authenticity. HMAC-SHA256 is commonly used in API authentication.
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