RSA_size(3)

NAME

       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.

1.0.2t                            2019-09-10                       RSA_size(3)