openssl-dgst

calculates message digests of files

TLDR

Calculate SHA256 hash

$ openssl dgst -sha256 [file]

Calculate MD5 hash

$ openssl dgst -md5 [file]

Output hash only

$ openssl dgst -sha256 -r [file]

Sign file with private key

$ openssl dgst -sha256 -sign [private.key] -out [signature] [file]

Verify signature

$ openssl dgst -sha256 -verify [public.key] -signature [signature] [file]

SYNOPSIS

openssl dgst [options] [file...]

DESCRIPTION

openssl dgst calculates message digests (hashes) of files. Supports various algorithms including SHA-256, SHA-512, and MD5. Can also sign and verify files using asymmetric keys.

PARAMETERS

-sha256, -sha512, -md5

Hash algorithm to use.

-sign key

Sign with private key.

-verify key

Verify with public key.

-signature file

Signature file for verification.

-r

Output hash in coreutils format.

-hex

Output as hex (default).

-binary

Output in binary.