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Data Encryption and Decryption Technical Guide for PHP and Mini Programs
Introduction:
In the era of modern information exchange, data security has become particularly important. In order to protect sensitive information from unauthorized access and tampering, encryption and decryption technology have become essential tools. This article will introduce data encryption and decryption technologies commonly used in PHP and applets, and provide code examples.
1. Data encryption technology
$plaintext = "Hello World"; $encryption_key = "123456789"; $iv = openssl_random_pseudo_bytes(openssl_cipher_iv_length("AES-128-CBC")); $ciphertext = openssl_encrypt($plaintext, "AES-128-CBC", $encryption_key, 0, $iv);
In the mini program, you can use the cryptojs library for symmetric encryption. The example is as follows:
var plaintext = "Hello World"; var encryption_key = "123456789"; var iv = CryptoJS.lib.WordArray.random(16); var ciphertext = CryptoJS.AES.encrypt(plaintext, encryption_key, { iv: iv, mode: CryptoJS.mode.CBC, });
$plaintext = "Hello World"; openssl_public_encrypt($plaintext, $encrypted_data, $public_key);
In the applet, you can use the rsa encryption library for asymmetric encryption. The example is as follows:
var plaintext = "Hello World"; var encrypted_data = RSA.encrypt(plaintext, public_key);
2. Data decryption technology
$decryption_key = "123456789"; $decrypted_data = openssl_decrypt($ciphertext, "AES-128-CBC", $decryption_key, 0, $iv);
In the mini program, you can use the cryptojs library for symmetric decryption. The example is as follows:
var decryption_key = "123456789"; var decrypted_data = CryptoJS.AES.decrypt(ciphertext, decryption_key, { iv: iv, mode: CryptoJS.mode.CBC, }).toString(CryptoJS.enc.Utf8);
openssl_private_decrypt($encrypted_data, $decrypted_data, $private_key);
In the applet, you can use the rsa encryption library for asymmetric decryption. The example is as follows:
var decrypted_data = RSA.decrypt(encrypted_data, private_key);
Conclusion:
This article introduces data encryption and decryption technologies commonly used in PHP and small programs, including symmetric encryption, asymmetric encryption, etc. These encryption technologies help us protect the security of sensitive information and prevent data from being accessed and tampered with by unauthorized persons. By understanding and mastering these technologies, we can better protect users' privacy and data security.
Reference materials:
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