openssl_privatekey – Generate OpenSSL private keys

From Get docs
Ansible/docs/2.8/modules/openssl privatekey module


openssl_privatekey – Generate OpenSSL private keys

New in version 2.3.


Synopsis

  • This module allows one to (re)generate OpenSSL private keys.
  • One can generate RSA), DSA, ECC or EdDSA private keys.
  • Keys are generated in PEM format.
  • Please note that the module regenerates private keys if they don’t match the module’s options. In particular, if you provide another passphrase (or specify none), change the keysize, etc., the private key will be regenerated. If you are concerned that this could overwrite your private key, consider using the backup option.
  • The module can use the cryptography Python library, or the pyOpenSSL Python library. By default, it tries to detect which one is available. This can be overridden with the select_crypto_backend option.”

Requirements

The below requirements are needed on the host that executes this module.

  • Either cryptography >= 1.2.3 (older versions might work as well)
  • Or pyOpenSSL

Parameters

Parameter Choices/Defaults Comments

attributes

string

added in 2.3

The attributes the resulting file or directory should have.

To get supported flags look at the man page for chattr on the target system.

This string should contain the attributes in the same order as the one displayed by lsattr.

The = operator is assumed as default, otherwise + or - operators need to be included in the string.


aliases: attr

backup

boolean

added in 2.8

  • no

  • yes

Create a backup file including a timestamp so you can get the original private key back if you overwrote it with a new one by accident.

cipher

string

added in 2.4

The cipher to encrypt the private key. (Valid values can be found by running `openssl list -cipher-algorithms` or `openssl list-cipher-algorithms`, depending on your OpenSSL version.)

When using the cryptography backend, use auto.

curve

string

added in 2.8

  • secp384r1
  • secp521r1
  • secp224r1
  • secp192r1
  • secp256r1
  • secp256k1
  • brainpoolP256r1
  • brainpoolP384r1
  • brainpoolP512r1
  • sect571k1
  • sect409k1
  • sect283k1
  • sect233k1
  • sect163k1
  • sect571r1
  • sect409r1
  • sect283r1
  • sect233r1
  • sect163r2

Note that not all curves are supported by all versions of cryptography.

For maximal interoperability, secp384r1 or secp256r1 should be used.

We use the curve names as defined in the IANA registry for TLS.

force

boolean

  • no

  • yes

Should the key be regenerated even if it already exists.

group

string

Name of the group that should own the file/directory, as would be fed to chown.

mode

string

The permissions the resulting file or directory should have.

For those used to /usr/bin/chmod remember that modes are actually octal numbers. You must either add a leading zero so that Ansible's YAML parser knows it is an octal number (like 0644 or 01777) or quote it (like '644' or '1777') so Ansible receives a string and can do its own conversion from string into number.

Giving Ansible a number without following one of these rules will end up with a decimal number which will have unexpected results.

As of Ansible 1.8, the mode may be specified as a symbolic mode (for example, u+rwx or u=rw,g=r,o=r).

owner

string

Name of the user that should own the file/directory, as would be fed to chown.

passphrase

string

added in 2.4

The passphrase for the private key.

path

path / required

Name of the file in which the generated TLS/SSL private key will be written. It will have 0600 mode.

select_crypto_backend

string

added in 2.8

  • auto

  • cryptography
  • pyopenssl

Determines which crypto backend to use.

The default choice is auto, which tries to use cryptography if available, and falls back to pyopenssl.

If set to pyopenssl, will try to use the pyOpenSSL library.

If set to cryptography, will try to use the cryptography library.

selevel

string

Default:

"s0"

The level part of the SELinux file context.

This is the MLS/MCS attribute, sometimes known as the range.

When set to _default, it will use the level portion of the policy if available.

serole

string

The role part of the SELinux file context.

When set to _default, it will use the role portion of the policy if available.

setype

string

The type part of the SELinux file context.

When set to _default, it will use the type portion of the policy if available.

seuser

string

The user part of the SELinux file context.

By default it uses the system policy, where applicable.

When set to _default, it will use the user portion of the policy if available.

size

integer

Default:

4096

Size (in bits) of the TLS/SSL key to generate.

state

string

  • absent
  • present

Whether the private key should exist or not, taking action if the state is different from what is stated.

type

string

  • DSA
  • ECC
  • Ed25519
  • Ed448
  • RSA

  • X25519
  • X448

The algorithm used to generate the TLS/SSL private key.

Note that ECC, X25519, X448, Ed25519 and Ed448 require the cryptography backend. X25519 needs cryptography 2.5 or newer, while X448, Ed25519 and Ed448 require cryptography 2.6 or newer. For ECC, the minimal cryptography version required depends on the curve option.

unsafe_writes

boolean

added in 2.2

  • no

  • yes

Influence when to use atomic operation to prevent data corruption or inconsistent reads from the target file.

By default this module uses atomic operations to prevent data corruption or inconsistent reads from the target files, but sometimes systems are configured or just broken in ways that prevent this. One example is docker mounted files, which cannot be updated atomically from inside the container and can only be written in an unsafe manner.

This option allows Ansible to fall back to unsafe methods of updating files when atomic operations fail (however, it doesn't force Ansible to perform unsafe writes).

IMPORTANT! Unsafe writes are subject to race conditions and can lead to data corruption.



See Also

See also

openssl_certificate – Generate and/or check OpenSSL certificates
The official documentation on the openssl_certificate module.
openssl_csr – Generate OpenSSL Certificate Signing Request (CSR)
The official documentation on the openssl_csr module.
openssl_dhparam – Generate OpenSSL Diffie-Hellman Parameters
The official documentation on the openssl_dhparam module.
openssl_pkcs12 – Generate OpenSSL PKCS#12 archive
The official documentation on the openssl_pkcs12 module.
openssl_publickey – Generate an OpenSSL public key from its private key
The official documentation on the openssl_publickey module.


Examples

- name: Generate an OpenSSL private key with the default values (4096 bits, RSA)
  openssl_privatekey:
    path: /etc/ssl/private/ansible.com.pem

- name: Generate an OpenSSL private key with the default values (4096 bits, RSA) and a passphrase
  openssl_privatekey:
    path: /etc/ssl/private/ansible.com.pem
    passphrase: ansible
    cipher: aes256

- name: Generate an OpenSSL private key with a different size (2048 bits)
  openssl_privatekey:
    path: /etc/ssl/private/ansible.com.pem
    size: 2048

- name: Force regenerate an OpenSSL private key if it already exists
  openssl_privatekey:
    path: /etc/ssl/private/ansible.com.pem
    force: yes

- name: Generate an OpenSSL private key with a different algorithm (DSA)
  openssl_privatekey:
    path: /etc/ssl/private/ansible.com.pem
    type: DSA

Return Values

Common return values are documented here, the following are the fields unique to this module:

Key Returned Description

backup_file

string

changed and if backup is yes

Name of backup file created.


Sample:

/path/to/privatekey.pem.2019-03-09@11:22~

curve

string

changed or success, and type is ECC

Elliptic curve used to generate the TLS/SSL private key.


Sample:

secp256r1

filename

string

changed or success

Path to the generated TLS/SSL private key file.


Sample:

/etc/ssl/private/ansible.com.pem

fingerprint

dictionary

changed or success

The fingerprint of the public key. Fingerprint will be generated for each hashlib.algorithms available.

The PyOpenSSL backend requires PyOpenSSL >= 16.0 for meaningful output.


Sample:

{'md5': '84:75:71:72:8d:04:b5:6c:4d:37:6d:66:83:f5:4c:29', 'sha1': '51:cc:7c:68:5d:eb:41:43:88:7e:1a:ae:c7:f8:24:72:ee:71:f6:10', 'sha224': 'b1:19:a6:6c:14:ac:33:1d:ed:18:50:d3:06:5c:b2:32:91:f1:f1:52:8c:cb:d5:75:e9:f5:9b:46', 'sha256': '41:ab:c7:cb:d5:5f:30:60:46:99:ac:d4:00:70:cf:a1:76:4f:24:5d:10:24:57:5d:51:6e:09:97:df:2f:de:c7', 'sha384': '85:39:50:4e:de:d9:19:33:40:70:ae:10:ab:59:24:19:51:c3:a2:e4:0b:1c:b1:6e:dd:b3:0c:d9:9e:6a:46:af:da:18:f8:ef:ae:2e:c0:9a:75:2c:9b:b3:0f:3a:5f:3d', 'sha512': 'fd:ed:5e:39:48:5f:9f:fe:7f:25:06:3f:79:08:cd:ee:a5:e7:b3:3d:13:82:87:1f:84:e1:f5:c7:28:77:53:94:86:56:38:69:f0:d9:35:22:01:1e:a6:60:...:0f:9b'}

size

integer

changed or success

Size (in bits) of the TLS/SSL private key.


Sample:

4096

type

string

changed or success

Algorithm used to generate the TLS/SSL private key.


Sample:

RSA




Status

Authors

  • Yanis Guenane (@Spredzy)
  • Felix Fontein (@felixfontein)

Hint

If you notice any issues in this documentation you can edit this document to improve it.


© 2012–2018 Michael DeHaan
© 2018–2019 Red Hat, Inc.
Licensed under the GNU General Public License version 3.
https://docs.ansible.com/ansible/2.8/modules/openssl_privatekey_module.html