openssl-format-options(1) - phpMan

OPENSSL-FORMAT-OPTIONS(1SSL) OpenSSL OPENSSL-FORMAT-OPTIONS(1SSL)

NAME
openssl-format-options - OpenSSL command input and output format options

SYNOPSIS
openssl command [ options ... ] [ parameters ... ]

DESCRIPTION
Several OpenSSL commands can take input or generate output in a variety of formats.

Since OpenSSL 3.0 keys, single certificates, and CRLs can be read from files in any of the
DER, PEM or P12 formats. Specifying their input format is no more needed and the openssl
commands will automatically try all the possible formats. However if the DER or PEM input
format is specified it will be enforced.

In order to access a key via an engine the input format ENGINE may be used; alternatively
the key identifier in the <uri> argument of the respective key option may be preceded by
"org.openssl.engine:". See "Engine Options" in openssl(1) for an example usage of the
latter.

OPTIONS
Format Options
The options to specify the format are as follows. Refer to the individual man page to see
which options are accepted.

-inform format, -outform format
The format of the input or output streams.

-keyform format
Format of a private key input source.

-CRLform format
Format of a CRL input source.

Format Option Arguments
The possible format arguments are described below. Both uppercase and lowercase are
accepted.

The list of acceptable format arguments, and the default, is described in each command
documentation.

DER A binary format, encoded or parsed according to Distinguished Encoding Rules (DER) of
the ASN.1 data language.

ENGINE
Used to specify that the cryptographic material is in an OpenSSL engine. An engine
must be configured or specified using the -engine option. A password or PIN may be
supplied to the engine using the -passin option.

P12 A DER-encoded file containing a PKCS#12 object. It might be necessary to provide a
decryption password to retrieve the private key.

PEM A text format defined in IETF RFC 1421 and IETF RFC 7468. Briefly, this is a block of
base-64 encoding (defined in IETF RFC 4648), with specific lines used to mark the
start and end:

Text before the BEGIN line is ignored.
----- BEGIN object-type -----
OT43gQKBgQC/2OHZoko6iRlNOAQ/tMVFNq7fL81GivoQ9F1U0Qr+DH3ZfaH8eIkX
xT0ToMPJUzWAn8pZv0snA0um6SIgvkCuxO84OkANCVbttzXImIsL7pFzfcwV/ERK
UM6j0ZuSMFOCr/lGPAoOQU0fskidGEHi1/kW+suSr28TqsyYZpwBDQ==
----- END object-type -----
Text after the END line is also ignored

The object-type must match the type of object that is expected. For example a "BEGIN
X509 CERTIFICATE" will not match if the command is trying to read a private key. The
types supported include:

ANY PRIVATE KEY
CERTIFICATE
CERTIFICATE REQUEST
CMS
DH PARAMETERS
DSA PARAMETERS
DSA PUBLIC KEY
EC PARAMETERS
EC PRIVATE KEY
ECDSA PUBLIC KEY
ENCRYPTED PRIVATE KEY
PARAMETERS
PKCS #7 SIGNED DATA
PKCS7
PRIVATE KEY
PUBLIC KEY
RSA PRIVATE KEY
SSL SESSION PARAMETERS
TRUSTED CERTIFICATE
X509 CRL
X9.42 DH PARAMETERS

The following legacy object-type's are also supported for compatibility with earlier
releases:

DSA PRIVATE KEY
NEW CERTIFICATE REQUEST
RSA PUBLIC KEY
X509 CERTIFICATE

SMIME
An S/MIME object as described in IETF RFC 8551. Earlier versions were known as CMS
and are compatible. Note that the parsing is simple and might fail to parse some
legal data.

Licensed under the Apache License 2.0 (the "License"). You may not use this file except
in compliance with the License. You can obtain a copy in the file LICENSE in the source
distribution or at <https://www.openssl.org/source/license.html>.

3.0.2 2024-08-20 OPENSSL-FORMAT-OPTIONS(1SSL)

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