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Calculate
file hash and checksum / compare files
PeaZip "Check files" tool in "File tools"
submenu (in main menu and create archive submenu) can perform multiple,
user selected hash and checksum algorithms on multiple files at once.
This function supports many algorithms ranging from fast checksums to
cryptographically strong hashes: Adler32, CRC family (CRC16, CRC24,
CRC32, CRC64), eDonkey/eMule, MD4, MD5, Ripemd160, SHA families (SHA1;
SHA224, SHA256, SHA384, SHA512), and Whirlpool512.
Calculating file hash or checksum is useful in example to find
duplicate files and to check files for corruption when an original checksum or hash value is
known.
Output can be seen as HEX (either LSB or MSB) or
encoded as Base64.
" Compare files" tools, instead,
performs byte to byte comparison between two files; unlike checksum or
hash based comparison byte to byte comparison can spot exactly what are
the different bytes and it is not susceptible of collisions under any
circumstance, even if this condition is highly improbable and very
difficult (or not practically possible) to be triggered if the chosen
algorithm is adequately strong for the scenario where it is intended to
be used.
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