OpenSSL Module - Cryptography and SSL/TLS Toolkit

PHP Modules Tutorials - Herong's Tutorial Examples

∟OpenSSL Module - Cryptography and SSL/TLS Toolkit

This chapter provides tutorial examples and notes on OpenSSL module. Topics include introduction of commonly used OpenSSL functions; computing digest/hash value; generating private and public key pairs; symmetric encryption and asymmetric encryption; generating digital signatures; sealing (double-encryption) large documents; generating and signing CSR; parsing certificate.

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OpenSSL Module and C Library

openssl_digest() - Compute Digest/Hash

openssl_encrypt() - Encrypt with Password

openssl_pkey_new() - Generate Private/Public Key

openssl_public_encrypt() - Public Key Encryption

openssl_sign() - Generate Digital Signature

openssl_seal() - Seal Document with Public Key

openssl_csr_new() - CSR (Certificate Signing Request)

openssl_csr_sign() - Sign CSR into Certificate

Takeaways:

OpenSSL module, allows you to perform public key/private key, encryption/decryption, PKI certificate, and other cryptography operations.
$digest = openssl_digest($data, $algo) - Compute a digest/hash value.
$cipher = openssl_encrypt($data, $algo, $pass) - Encrypt data with password.
$private = openssl_pkey_new($conf) - Generate a private and public key pair.
openssl_public_encrypt($data, $cipher, $public) - Encrypt data with public key.
openssl_sign($data, $signature, $private, $algo) - Generate a digital signature with a private key.
openssl_seal($data, $sealed, $pass_list, $public_list, $algo) - Seal (encrypt) data with a random password, and encrypt the password with a public key.
$csr = openssl_csr_new($subject, $private) - Generate a CSR for a given subject.
$cert = openssl_csr_sign($csr, $ca_cert, $ca_private, $days) - Sign a CSR into a certificate.
$details = openssl_x509_parse($cert) - Return details of a certificate.

Table of Contents

About This Book

Introduction and Installation of PHP

Managing PHP Engine and Modules on macOS

Managing PHP Engine and Modules on CentOS

cURL Module - Client for URL

DOM Module - Parsing HTML Documents

GD Module - Manipulating Images and Pictures

MySQLi Module - Accessing MySQL Server

►OpenSSL Module - Cryptography and SSL/TLS Toolkit

PCRE Module - Perl Compatible Regular Expressions

SOAP Module - Creating and Calling Web Services

SOAP Module - Server Functions and Examples

Zip Module - Managing ZIP Archive Files

References

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