gcloud storage hash

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-crc32c --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 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