RSA_size.3ssl man page

RSA_size — get RSA modulus size

Synopsis

#include <openssl/rsa.h>
int RSA_size(const RSA *rsa);

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.

rsa->n must not be NULL.

Return Value

The size in bytes.

See Also

rsa(3)

History

RSA_size() is available in all versions of SSLeay and OpenSSL.

Info

2016-09-26 1.0.2j OpenSSL