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=pod
=head1 NAME
RSA_size - Get RSA modulus size
=head1 SYNOPSIS
#include <openssl/rsa.h>
int RSA_size(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->n> must not be B<NULL>.
=head1 RETURN VALUE
The size in bytes.
=head1 SEE ALSO
rsa(3)
=head1 HISTORY
RSA_size() is available in all versions of SSLeay and OpenSSL.
=cut
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