b2sum-rs

Rust clone of the BLAKE2b checksum utility in GNU coreutils.

Install

cargo install b2sum

Usage

Print or check BLAKE2 (512-bit) checksums.
With no FILE, or when FILE is -, read standard input.

Usage:
  b2sum [options] [<filename>]...
  b2sum (-h | --help)
  b2sum --version

Options:
  -c, --check           read BLAKE2 sums from the FILEs and check them
  -l, --length=BITS     digest length in bits; must not exceed the maximum for the
                        blake2 algorithm and must be a multiple of 8 [default: 512]
      --tag             create a BSD-style checksum

The following five options are useful only when verifying checksums:
      --ignore-missing  don't fail or report status for missing files
      --quiet           don't print OK for each successfully verified file
      --status          don't output anything, status code shows success
      --strict          exit non-zero for improperly formatted checksum lines
  -w, --warn            warn about improperly formatted checksum lines

  -h, --help            display this help and exit
      --version         output version information and exit

The sums are computed as described in RFC 7693.  When checking, the input
should be a former output of this program.  The default mode is to print
a line with checksum and name for each FILE.

Minimum Supported Rust Version (MSRV)

This crate is guaranteed to compile on stable Rust 1.42 and up. It might compile with older versions but that may change at any time.