php big integers

Question

Possible Duplicate:
How to work with big numbers in PHP?

i am developing a web app on RSA algorithm. as to make RSA more secure u have to use large numbers so here it goes.... so first i convert the alphabets (all A to Z) into their ASCII codes, i m using ord().

but the problem is the function ciphertext=m(pow)e*[mod n] in which m (message which is a number) to the power e is to be calculated now if ascii of a is 97 , and suppose e=57 then 97 to the power 57 will be huge.... i have a 32 bit laptop.

so plz tell the right data type which i should use thanks.

Check out http://stackoverflow.com/questions/2490888/how-to-work-with-big-numbers-in-php — Nelson, Dec 07 '12 at 19:36
is 32 but lappy make any difference ...idk..let me know if it does ?? — NullPoiиteя, Dec 07 '12 at 19:37
Did you read the manual at all? No need for conjecture: http://php.net/manual/en/language.types.integer.php — ficuscr, Dec 07 '12 at 20:01

score 0 · Answer 1 · edited May 23 '17 at 10:34

0

Don't roll your own encryption.

Take a look at the OpenSSL extension, shelling out to the openssl binary, or the phpseclib if you don't have either the OpenSSL extension or binary installed.

edited May 23 '17 at 10:34

Community

1
1

answered Dec 07 '12 at 23:57

Charles

50,943
13
104
142

php big integers

1 Answers1