RSA_size(3)

RSA_size(3)                  OpenSSL                  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               Last change: 2019-09-10                    1