dgst, md5, md4, md2, sha1, sha, mdc2, ripemd160 - message digests
[-md5|-md4|-md2|-sha1|-sha|-mdc2|-ripemd160|-dss1] [-c] [-d] [-hex] [-binary] [-out filename] [-sign filename] [-keyform arg] [-passin arg] [-verify filename] [-prverify filename] [-signature filename] [-hmac key] [file...]
[md5|md4|md2|sha1|sha|mdc2|ripemd160] [-c] [-d] [file...]
The digest functions output the message digest of a supplied file or files
in hexadecimal form. They can also be used for digital signing and
print out the digest in two digit groups separated by colons, only relevant
hex format output is used.
print out BIO debugging information.
digest is to be output as a hex dump. This is the default case for a
``normal'' digest as opposed to a digital signature.
output the digest or signature in binary form.
- -out filename
filename to output to, or standard output by default.
- -sign filename
digitally sign the digest using the private key in ``filename''.
- -keyform arg
Specifies the key format to sign digest with. Only PEM and ENGINE formats
are supported by the dgst command.
- -engine id
Use engine id for operations (including private key storage). This engine is not used as
source for digest algorithms, unless it is also specified in the
- -sigopt nm:v
Pass options to the signature algorithm during sign or verify operations.
Names and values of these options are algorithm-specific.
- -passin arg
the private key password source. For more information about the format of arg
see the PASS PHRASE ARGUMENTS section in openssl(1).
- -verify filename
verify the signature using the the public key in ``filename''. The output
is either ``Verification OK'' or ``Verification Failure''.
- -prverify filename
verify the signature using the the private key in ``filename''.
- -signature filename
the actual signature to verify.
- -hmac key
create a hashed MAC using ``key''.
- -mac alg
create MAC (keyed Message Authentication Code). The most popular MAC
algorithm is HMAC (hash-based MAC), but there are other MAC algorithms
which are not based on hash, for instance gost-mac algorithm, supported by ccgost engine. MAC keys and other options should be set via -macopt parameter.
- -macopt nm:v
Passes options to MAC algorithm, specified by -mac key. Following options are supported by both by HMAC and gost-mac:
Specifies MAC key as alphnumeric string (use if key contain printable
characters only). String length must conform to any restrictions of
the MAC algorithm for example exactly 32 chars for gost-mac.
Specifies MAC key in hexadecimal form (two hex digits per byte). Key length
must conform to any restrictions of the MAC algorithm for example exactly
32 chars for gost-mac.
- -rand file(s)
a file or files containing random data used to seed the random number
generator, or an EGD socket (see RAND_egd(3)). Multiple files can be specified separated by a OS-dependent character.
The separator is ; for MS-Windows, , for OpenVMS, and : for all others.
file or files to digest. If no files are specified then standard input is
The digest of choice for all new applications is SHA1. Other digests are
however still widely used.
If you wish to sign or verify data using the DSA algorithm then the dss1
digest must be used.
A source of random numbers is required for certain signing algorithms, in
The signing and verify options should only be used if a single file is
being signed or verified.
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