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BLAKE3/b3sum/README.md
Jack O'Connor 0de4412884 version 0.1.4 
Changes since 0.1.3:
- Hasher supports the reset() method.
- Hasher implements several traits from the `digest` and `crypto_mac`
  crates.
- Bug fixes in the C implementation for MSVC and for 32-bit x86.
2020-02-03 12:05:26 -05:00

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b3sum

b3sum 0.1.4

USAGE:
    b3sum [FLAGS] [OPTIONS] [file]...

FLAGS:
    -h, --help        Prints help information
        --keyed       Uses the keyed mode, with the raw 32-byte key read from stdin
        --no-mmap     Disables memory mapping
        --no-names    Omits filenames in the output
        --raw         Writes raw output bytes to stdout, rather than hex. --no-names is implied.
                      In this case, only a single input is allowed
    -V, --version     Prints version information

OPTIONS:
        --derive-key <CONTEXT>    Uses the key derivation mode, with the input as key material
    -l, --length <LEN>            The number of output bytes, prior to hex encoding (default 32)

ARGS:
    <file>...

Building

The standard way to install b3sum is:

cargo install b3sum

On Linux for example, Cargo will put the compiled binary in ~/.cargo/bin. You might want to add that directory to your $PATH, or rustup might have done it for you when you installed Cargo.

If you want to install directly from this directory, you can run cargo install --path .. Or you can just build with cargo build --release, which puts the binary at ./target/release/b3sum.

AVX-512 support (via C FFI, with dynamic CPU feature detection) and multi-threading (via Rayon) are enabled by default. Note that the underlying blake3 crate does not enable those by default.