# phpman > perldoc > Crypt::OpenSSL::Bignum::CTX

## NAME
    [Crypt::OpenSSL::Bignum::CTX](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3AOpenSSL%3A%3ABignum%3A%3ACTX/markdown) - Perl interface to the OpenSSL BN_CTX structure.

## SYNOPSIS
      use [Crypt::OpenSSL::Bignum::CTX](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3AOpenSSL%3A%3ABignum%3A%3ACTX/markdown);
      my $bn_ctx = [Crypt::OpenSSL::Bignum::CTX](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3AOpenSSL%3A%3ABignum%3A%3ACTX/markdown)->new();

## DESCRIPTION
    See the man page for [Crypt::OpenSSL::Bignum](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3AOpenSSL%3A%3ABignum/markdown).

## AUTHOR
    Ian Robertson, <iroberts@cpan.org>

## SEE ALSO
    perl, [Crypt::OpenSSL::Bignum](https://www.chedong.com/phpMan.php/perldoc/Crypt%3A%3AOpenSSL%3A%3ABignum/markdown), [BN_CTX_new(3ssl)](https://www.chedong.com/phpMan.php/man/BNCTXnew/3ssl/markdown)