Using openssl enc, followed by openssl base64 is somewhat cumbersome. I have a string that I believe was encrypted using an RC2 cipher. You can rate examples to help us improve the quality of examples. A simple two-way function to encrypt or decrypt a string WPpeople Editor PHP September 25, 2017, 01:17 am No comments 2 minutes read This function will provide you a two-way system to encrypt a string or decrypt an encrypted string. I know the secret key and the IV but I am struggling to decrypt it using OpenSSL. openssl rsa: Manage RSA private keys (includes generating a public key from it). openssl_encrypt() and openssl_decrypt() PHP function: The openssl_encrypt() PHP function can encrypt a data with a encryption key. The libcrypto library within OpenSSL provides functions for performing symmetric encryption and decryption operations across a wide range of algorithms and modes. GitHub Gist: instantly share code, notes, and snippets. How do I pass plaintext in console to openssl (instead of specifying input file which has plaintext). $ echo MY_CIPHER_TEXT | openssl enc -d -base64 -rc2 -iv MY_IV I am prompted for the decryption password, which I enter, but i always received a response This function will work from PHP Version greater than 5.0.0. To encrypt data using openssl_private_encrypt() and decrypt using openssl_public_decrypt(): The -a flag (armor) of openssl enc will automatically base64-encode the result of encryption (-e) and base64-decode an input file prior to decryption (-d). You can use this function e.g. Trying to decrypt some cipher text that was generated by an OpenSSL() call from PHP in an outside system. Simple text encryption/decryption with openssl. We use a base64 encoded string of … I know what the plain text should be. In order to perform encryption/decryption you need to know: When using the password form of the command, the salt is output at the start of the data stream. Repeating the prior example with -a: openssl genrsa: Generates an RSA private keys. The Key + IV method does not need salt, and openssl does not remove it from the decoded base64 string. These are the top rated real world PHP examples of openssl_encrypt extracted from open source projects. I want to encrypt a bunch of strings using openssl. openssl_private_decrypt() decrypts data that was previous encrypted via openssl_public_encrypt() and stores the result into decrypted. The key is just a string of random bytes. openssl rsautl: Encrypt and decrypt files with RSA keys. When using -a you are encoding the salt into the base64 data.. Example 1. This page walks you through the basics of performing a simple encryption and corresponding decryption operation. 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