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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.