Hashvergleichen
Hashvergleichen, or hash comparison, is the practice of determining whether two data items are equal by comparing their hash digests. Hashing applies a deterministic function to input data to produce a fixed-size digest. If the inputs are identical, the digests should be identical; if the inputs differ, the digests are overwhelmingly likely to differ. However, hash functions can in principle produce collisions, where different inputs yield the same digest.
Common use cases include verifying data integrity for downloaded files or backups by comparing the computed
Choosing the right hashes is important: cryptographic hash functions such as SHA-256, SHA-3, or BLAKE2 are designed
Hash comparison has limitations: it does not provide data provenance or authenticity by itself and is vulnerable