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Informations about the package laravel-crypto-pkg

Encrypting and signing data using private/public keys

Latest Version on Packagist Tests Total Downloads

This package allows you to easily generate a private/public key pairs, and encrypt/decrypt messages using those keys.

Most functions in this package are wrappers around openssl_* functions to improve DX.

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Installation

You can install the package via composer:

Usage

You can generate a key pair using the generate function on the KeyPair class.

You can write the keys to disk, by passing paths to the generate function.

You can protect the private key with a password by using the password method:

When using a password to generating a private key, you will need that password when instantiating the PrivateKey class.

Loading keys

To load a key from a file use the fromFile static method.

Alternatively, you can also create a key object using a string.

If the private key is password protected, you need to pass the password as the second argument.

If you do not specify the right password, a Spatie\Crypto\Exceptions\InvalidPrivateKey exception will be thrown.

Encrypting a message with a private key, decrypting with the public key

Here's how you can encrypt data using the private key, and how to decrypt it using the public key.

If decrypt cannot decrypt the given data (maybe a non-matching private key was used to encrypt the data, or maybe tampered with the data), an exception of class Spatie\Crypto\Exceptions\CouldNotDecryptData will be thrown.

Encrypting a message with a public key, decrypting with the private key

Here's how you can encrypt data using the public key, and how to decrypt it using the private key.

If decrypt cannot decrypt the given data (maybe a non-matching public key was used to encrypt the data, or maybe tampered with the data), an exception of class Spatie\Crypto\Exceptions\CouldNotDecryptData will be thrown.

Determining if the data can be decrypted

Both the PublicKey and PrivateKey class have a canDecrypt method to determine if given data can be decrypted.

Signing and verifying data

The PrivateKey class has a method sign to generate a signature for the given data. The verify method on the PublicKey class can be used to verify if a signature is valid for the given data.

If verify returns true, you know for certain that the holder of the private key signed the message, and that it was not tampered with.

Alternatives

This package aims to be very lightweight and easy to use. If you need more features, consider using of one these alternatives:

A word on the usage of RSA

At the time of writing, RSA is secure enough for the use case we've built this package for.

To know more about why RSA might not be good enough for you, read this post on public-key encryption at Paragonie.com

Testing

Changelog

Please see CHANGELOG for more information on what has changed recently.

Contributing

Please see CONTRIBUTING for details.

Security Vulnerabilities

Please review our security policy on how to report security vulnerabilities.

Credits

License

The MIT License (MIT). Please see License File for more information.


All versions of laravel-crypto-pkg with dependencies

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Package Version
Requires php Version ^7.4|^8.0
ext-openssl Version *
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