How check string is encrypted or not in php?
I have a form that on it, I've got information from database. Now I want to check just a record on it and it is : Is it possible that I check the string value of that field and if it was encrypted or not, for response I return true or false!! How can I solve this issue?? Show asked Sep 9, 2014 at 6:22
3 Check the encrypted of decrypted of the value is equivalent to the input text answered Sep 9, 2014 at 6:38
To check if it's encrypted you need the key that has encrypted the value.
If you don't have the key you could maybe try testing a certain language signature (the amount of occurences in the string of certain characters). The type of encryption would be rather difficult to detect. answered Sep 2, 2019 at 12:19
I would think, the header-bit, would be a give away? I understand why you are nervous about it and it's not a big deal. I was just asking if there was a better way, because right now, if it fails decryption, the original DB-value is returned, which is also not entirely the right way to go, because it could cause possible leaking of encryption. I guess a better workaround would be, to mark the object as being decrypted. But that poses another possible issue around undecrypted values being leaked. Long story short: Encryption is hard! In PHP, Encryption and Decryption of a string is possible using one of the Cryptography Extensions called OpenSSL function for encrypt and decrypt. openssl_encrypt() Function: The openssl_encrypt() function is used to encrypt the data. Syntax: string openssl_encrypt( string $data, string $method, string $key, $options = 0, string $iv, string $tag= NULL, string $aad, int $tag_length = 16 ) Parameters:
Return Value: It returns the encrypted string on success or FALSE on failure. openssl_decrypt() Function The openssl_decrypt() function is used to decrypt the data. Syntax: string openssl_decrypt( string $data, string $method, string $key, int $options = 0, string $iv, string $tag, string $aad) Parameters:
Return Value: It returns the decrypted string on success or FALSE on failure. Approach: First declare a string and store it into variable and use openssl_encrypt() function to encrypt the given string and use openssl_decrypt() function to descrypt the given string. Example 1: This example illustrates the encryption and decryption of string.
Output: Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks Example 2: Below example illustrate the encryption and decryption of string. Here string to be encrypted and decrypted string will be same but the encrypted string is randomly changed respectively.
Output: Original String: Welcome to GeeksforGeeks Encrypted String: hwB1K5NkfcIzkLTWQeQfHLNg5FlyX3PNUA== Decrypted String: Welcome to GeeksforGeeks References:
PHP is a server-side scripting language designed specifically for web development. You can learn PHP from the ground up by following this PHP Tutorial and PHP Examples. How do you check if a string is encrypted in PHP?To check if it's encrypted you need the key that has encrypted the value. If you don't have the key you could maybe try testing a certain language signature (the amount of occurences in the string of certain characters). The type of encryption would be rather difficult to detect.
How do you check data is encrypted or not?In the Data Protection window, click on the icon of the hard drive (aka System Storage). Under System Storage, if you see the following text: OSDisk (C) and In compliance underneath, then your hard drive is encrypted.
How we can encrypt any string using PHP?In PHP, Encryption and Decryption of a string is possible using one of the Cryptography Extensions called OpenSSL function for encrypt and decrypt. openssl_encrypt() Function: The openssl_encrypt() function is used to encrypt the data. Parameters: $data: It holds the string or data which need to be encrypted.
What are the encryption function in PHP?PHP encompasses a hash algorithm to encrypt the password. For the most part it is used in functions for password encrypting are crypt(), password_hash() and md5().
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