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Asymmetric encryption in PHP
I tried the mcrypt_encrypt function but I received an error message saying that the function was undefined.
Are there any simple functions like md5 that are asymmetric encryptions?
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Posted 20 August 2012 - 09:37 PM (#1)
I tried the mcrypt_encrypt function but I received an error message saying that the function was undefined.
Are there any simple functions like md5 that are asymmetric encryptions?
--Sole_Wolf
Daniel15 
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Posted 20 August 2012 - 10:23 PM (#2)
mcrypt is symmetric, not asymmetric. For asymmetric encryption you probably want the OpenSSL extension and use openssl_public_encrypt and openssl_private_decrypt (or vice versa)
Here's an example: http://andytson.com/...-using-openssl/
I don't think there's an 'inbuilt' way to do this. Just use the extension, and don't reinvent the wheel. OpenSSL does a very good job of this
Here's an example: http://andytson.com/...-using-openssl/
I don't think there's an 'inbuilt' way to do this. Just use the extension, and don't reinvent the wheel. OpenSSL does a very good job of this
Daniel15! :D
Repeat after me: jQuery is not JavaScript. It is not the answer to every JavaScript-related question. When you have to write some JavaScript, do not instantly react with "Oh, I'll do that with jQuery!"
Repeat after me: jQuery is not JavaScript. It is not the answer to every JavaScript-related question. When you have to write some JavaScript, do not instantly react with "Oh, I'll do that with jQuery!"
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Posted 21 August 2012 - 09:21 PM (#3)
Daniel15, on 20 August 2012 - 10:23 PM, said:
mcrypt is symmetric, not asymmetric. For asymmetric encryption you probably want the OpenSSL extension and use openssl_public_encrypt and openssl_private_decrypt (or vice versa)
Here's an example: http://andytson.com/...-using-openssl/
I don't think there's an 'inbuilt' way to do this. Just use the extension, and don't reinvent the wheel. OpenSSL does a very good job of this
Here's an example: http://andytson.com/...-using-openssl/
I don't think there's an 'inbuilt' way to do this. Just use the extension, and don't reinvent the wheel. OpenSSL does a very good job of this
Well the reason why I ask is because I want my script to run on multiple machines. I'm afraid that some machines won't have the extension compiled with PHP by default which would end up breaking my script.
Are extensions the only way to get an asymmetric type encryption or is there some other function that everyone could have support for by default?
--Sole_Wolf
Daniel15
- dan.cx
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- Group: Moderators
- Posts: 3415
- Joined: 17-April 10
- LocationMelbourne, Australia
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Posted 21 August 2012 - 10:49 PM (#4)
I'd trust an extension over any "pure PHP" code implementing asymmetric encryption algorithms. The OpenSSL library is tried and tested.
If it's a script you'll be distributing, just write "This script requires the OpenSSL extension to be installed" in its README file
If it's a script you'll be distributing, just write "This script requires the OpenSSL extension to be installed" in its README file
Daniel15! :D
Repeat after me: jQuery is not JavaScript. It is not the answer to every JavaScript-related question. When you have to write some JavaScript, do not instantly react with "Oh, I'll do that with jQuery!"
Repeat after me: jQuery is not JavaScript. It is not the answer to every JavaScript-related question. When you have to write some JavaScript, do not instantly react with "Oh, I'll do that with jQuery!"
Spoiler
Posted 23 August 2012 - 07:11 PM (#5)
Daniel15, on 21 August 2012 - 10:49 PM, said:
I'd trust an extension over any "pure PHP" code implementing asymmetric encryption algorithms. The OpenSSL library is tried and tested.
If it's a script you'll be distributing, just write "This script requires the OpenSSL extension to be installed" in its README file
If it's a script you'll be distributing, just write "This script requires the OpenSSL extension to be installed" in its README file
Gah, oh well lol. I guess that'll have to do. Thanks for your help.
--Sole_Wolf
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