Complex sentence: In addition, all lower case letters in the password are changed to upper case before the password is hashed, which further reduces the key space for each half to 69 ^\\ approx 2 ^.
Split into simpler sentences: In addition, all lower case letters in the password are changed to upper case before the password is hashed. Converting lowercase character to uppercase further reduces the key space for each half to 69 ^\\ approx 2 ^.