By whether the same key is used for both encryption and decryption (symmetric key algorithms), or if a different key is used for each (asymmetric key algorithms). If the algorithm is symmetric, the key must be known to the recipient and sender and to no one else.
Estimated GPA Requirements. You will need very good grades in high school to get into University of Southern California. The average high school GPA of the admitted freshman class at University of Southern California was 3.73 on the 4.0 scale indicating that primarily A- students are accepted and ultimately attend. Meeting these GPA requirements is not enough to gain admission as USC is a very selective school.
Each year, we receive about 200 applications and accept 35 to 40 students for the program. Admitted students typically have an average GPA of 3.45 overall and 3.25 in the sciences. The program has no age cap. While the average age of admitted students is 24 years old, we enroll students older and younger than that.