=pod =head1 NAME RSA_size - get RSA modulus size =head1 SYNOPSIS #include <openssl/rsa.h> int RSA_size(const RSA *rsa); =head1 DESCRIPTION This function returns the RSA modulus size in bytes. It can be used to determine how much memory must be allocated for an RSA encrypted value. B<rsa-E<gt>n> must not be B<NULL>. =head1 RETURN VALUE The size in bytes. =head1 SEE ALSO L<rsa(3)|rsa(3)> =head1 HISTORY RSA_size() is available in all versions of SSLeay and OpenSSL. =cut