The main advantage of HMAC over other proposed hash based schemes is that HMAC can be proven secure, provided that the embedded hash function has some reasonable cryptographic strengths

For a sport to be included on the Summer Olympic Program it must be practiced by

A. men in at least 75 countries on four continents and by women in at least 40 countries on three continents. B. men in at least 25 countries on four continents and by women in at least 25 countries on three continents. C. men in at least 25 countries on four continents and by women in at least 25 countries on four continents. D. men and women in at least 25 countries on four continents.

A common exclusion in health insurance policies is any preexisting condition

Indicate whether the statement is true or false