NAME
    gcloud storage hash - calculates hashes on local or cloud files

SYNOPSIS
    gcloud storage hash URLS [URLS ...] [--additional-headers=HEADER=VALUE]
        [--hex] [--skip-crc32c | --skip-md5]
        [--decryption-keys=[DECRYPTION_KEY,...]] [GCLOUD_WIDE_FLAG ...]

DESCRIPTION
    Calculates hashes on local or cloud files that can be used to compare with
    "gcloud storage ls -L" output. If a specific hash option is not provided,
    this command calculates all gcloud storage-supported hashes for the file.

    Note that gcloud storage automatically performs hash validation when
    uploading or downloading files, so this command is only needed if you want
    to write a script that separately checks the hash for some reason.

    If you calculate a CRC32C hash for the file without a precompiled
    google-crc32c installation, hashing will be very slow.

EXAMPLES
    To get the MD5 and CRC32C hash digest of a cloud object in Base64 format:

        $ gcloud storage hash gs://bucket/object

    To get just the MD5 hash digest of a local object in hex format:

        $ gcloud storage hash /dir/object.txt --skip-md5 --hex

POSITIONAL ARGUMENTS
     URLS [URLS ...]
        Local or cloud URLs of objects to hash.

FLAGS
     --additional-headers=HEADER=VALUE
        Includes arbitrary headers in storage API calls. Accepts a comma
        separated list of key=value pairs, e.g. header1=value1,header2=value2.
        Overrides the default storage/additional_headers property value for
        this command invocation.

     --hex
        Output hash digests in hex format. By default, digests are displayed in
        base64.

     At most one of these can be specified:

       --skip-crc32c
          Skip CRC32C hash calculation. Useful if command is running slow.

       --skip-md5
          Skip MD5 hash calculation. Useful if command is running slow.

ENCRYPTION FLAGS
     --decryption-keys=[DECRYPTION_KEY,...]
        A comma-separated list of customer-supplied encryption keys (RFC 4648
        section 4 base64-encoded AES256 strings) that will be used to decrypt
        Google Cloud Storage objects. Data encrypted with a customer-managed
        encryption key (CMEK) is decrypted automatically, so CMEKs do not need
        to be listed here.

GCLOUD WIDE FLAGS
    These flags are available to all commands: --access-token-file, --account,
    --billing-project, --configuration, --flags-file, --flatten, --format,
    --help, --impersonate-service-account, --log-http, --project, --quiet,
    --trace-token, --user-output-enabled, --verbosity.

    Run $ gcloud help for details.

NOTES
    This variant is also available:

        $ gcloud alpha storage hash