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sha1

A ridiculously over-engineered & secure 3072-bit hashing algorithm.

#⃣ dd's hashing utility

Command-line utility for Windows which generates, verifies, and signs hash digests for your project.

Check easily the checksum of a file.

Incremental SHA-1 calculation

A simple tool to check if your password has been leaked.

Fast and easy to use C++ cryptographic hash functions

Based on: https://www.openssl.org/source/