blake3

Compute or check BLAKE3 hashes of files.

Table of Contents | Source: src/cmd/blake3.rs | 🚀

Description | Usage | Blake3 Options | Common Options

Description ↩

Compute cryptographic hashes of files using blake3.

This command is functionally similar to b3sum, providing fast, parallel blake3 hashing of one or more files. It supports keyed hashing, key derivation, variable-length output, and checksum verification. When no file is given, or when "-" is given, reads stdin.

For examples, see https://github.com/dathere/qsv/blob/master/tests/test_blake3.rs. See also https://github.com/dathere/qsv/wiki/Indexing-Compression-Diff#blake3

Usage ↩

qsv blake3 [options] [<input>...]
qsv blake3 --help

Blake3 Options ↩

Option	Type	Description	Default
‑‑keyed	flag	Use the keyed mode, reading the 32-byte key from stdin. When using --keyed, file arguments are required (cannot also read data from stdin).
‑‑derive‑key	string	Use the key derivation mode, with the given context string. Cannot be used with --keyed.
‑l, ‑‑length	integer	The number of output bytes, before hex encoding.	32
‑‑no‑mmap	flag	Disable memory mapping. Also disables multithreading.
‑‑no‑names	flag	Omit filenames in the output.
‑‑raw	flag	Write raw output bytes to stdout, rather than hex. Only a single input is allowed. --no-names is implied.
‑‑tag	flag	Output checksums in tagged format.
‑c, ‑‑check	flag	Read blake3 sums from the input files and check them.
‑j, ‑‑jobs	integer	The number of jobs to run in parallel for hashing. When not set, uses the number of CPUs detected. Set to 1 to disable multithreading.

Common Options ↩

Option	Type	Description	Default
‑h, ‑‑help	flag	Display this message
‑o, ‑‑output	string	Write output to instead of stdout.
‑q, ‑‑quiet	flag	Skip printing OK for each checked file. Must be used with --check.

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Source: src/cmd/blake3.rs | Table of Contents | README