Ubiq Security PHP Library

The Ubiq Security PHP Library provides convenient interaction with the Ubiq
Security Platform API from applications written in PHP. It includes a
pre-defined set of functions and classes that will provide simple interfaces
to encrypt and decrypt data.

Documentation

See the PHP API docs
and below for examples.

Individual interfaces are documented in greater detail in the source code

Tests covered by

    vendor/bin/phpcs --standard=phpcsruleset.xml src/ tests/
    vendor/bin/phpunit --configuration phpunit.xml

Installation

On Debian and Debian-like Linux systems:

$ sudo apt install php php-xml php-curl composer

Clone the PHP repository, and install dependencies

$ git clone https://gitlab.com/ubiqsecurity/ubiq-php.git
$ cd ubiq-php
$ composer install

Then include the library in your code with

require '/path/to/Ubiq.php';

Add repository and require to composer.json

"repositories": {
    "ubiq-php": {
        "type": "git",
        "url": "https://gitlab.com/ubiqsecurity/ubiq-php.git"
    }
}

"require": {
    "ubiqsecurity/ubiq-php":"dev-master"
}

Requirements

The library has been tested with PHP 7.3.

Usage

Configuration

The library can use a ubiq-config.json file to configure behavior and settings. This file can be located in any of the following paths and will load the first one that is found. A sample config file ships with the library:

docroot
parent of docroot
root of /src where the library is installed
parent of /src where the library is installed

Configuration can be set for the following attributes; if no config files are loaded, the default will be used.

Attribute	Description	Default
debug	Enables debugging mode, which will print verbose debugging information	false
event_reporting.minimum_event_count	The number of events that must accumulate before event reporting sends an usage report	5
event_reporting.flush_interval	The number of seconds (frequency) at which the event reporting queue will be checked to send	2
event_reporting.destroy_report_async	Whether or not a final usage report will be sent when the library is destroyed (when PHP script exits)	false
key_caching.unstructured	Enable or disable key caching for unstructured keys; this will NOT enable piecewise automatically, so is typically used in conjunction with \Ubiq\encrypt($multiple_uses = true), which re-uses an encryption key for unstructured encrypts	false
key_caching.encrypt	Enable or disable encryption of keys in cache; when enabled, this will add overhead to the all encrypt/decrypt actions and will encrypt all keys in the memory cache	false

Credentials

The library needs to be configured with your account credentials which are
available in your Ubiq Dashboard credentials. The
credentials can be set using environment variables, loaded from an explicitly
specified file, or read from the default location (~/.ubiq/credentials).

Read credentials from a specific file and use a specific profile

$credentials = new Ubiq\Credentials();
$credentials->load(
    '/path/to/credentials', 'profile-name'
);

Read credentials from ~/.ubiq/credentials and use the default profile

$credentials = new Ubiq\Credentials();

Use the following environment variables to set the credential values

UBIQ_ACCESS_KEY_ID
UBIQ_SECRET_SIGNING_KEY
UBIQ_SECRET_CRYPTO_ACCESS_KEY

$credentials = new Ubiq\Credentials();

Explicitly set the credentials

$credentials = new Ubiq\Credentials();
$credentials->set(
    '...' /* access key id */,
    '...' /* secret signing key */,
    '...' /* secret crypto access key */,
    '...' /* Ubiq API server, may omit this parameter */
);

Simple encryption and decryption

Encrypt a single block of data

Pass credentials and data into the encryption function. The encrypted data
will be returned.

$credentials = new Ubiq\Credentials();
$ct = Ubiq\encrypt($credentials, $pt);

Decrypt a single block of data

Pass credentials and encrypted data into the decryption function. The
plaintext data will be returned.

$credentials = new Ubiq\Credentials();
$pt = Ubiq\decrypt($credentials, $ct);

Encrypt a large data element where data is loaded in chunks

Create an encryption object using the credentials.
Call the encryption instance begin method
Call the encryption instance update method repeatedly until all the data is processed

Note that repeatedly calling the update method is not currently supported by the
underlying PHP crypto library. However, the interface is present and can be used
in cases where the caller wishes to reuse the encryption object for multiple
encryptions.
Call the encryption instance end method

$credentials = new Ubiq\Credentials();
$encryption = new Ubiq\Encryption($credentials, 1);

$pt = fread($infile, $filesize);

$ct  = $encryption->begin();
$ct .= $encryption->update($pt);
$ct .= $encryption->end();

Decrypt a large data element where data is loaded in chunks

Create an instance of the decryption object using the credentials.
Call the decryption instance begin method
Call the decryption instance update method repeatedly until all the data is processed

Note that repeatedly calling the update method is not currently supported by the
underlying PHP crypto library. However, the interface is present and can be used
in cases where the caller wishes to reuse the decryption object for multiple
decryptions.
Call the decryption instance end method

$credentials = new Ubiq\Credentials();
$decryption = new Ubiq\Decryption($credentials, 1);

$ct = fread($infile, $filesize);

$pt  = $decryption->begin();
$pt .= $decryption->update($ct);
$pt .= $decryption->end();