RC5-32/12/16 examples:

1. key = 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
   plaintext 00000000 00000000  --->  ciphertext EEDBA521 6D8F4B15  

2. key = 91 5F 46 19 BE 41 B2 51 63 55 A5 01 10 A9 CE 91 
   plaintext EEDBA521 6D8F4B15  --->  ciphertext AC13C0F7 52892B5B  

3. key = 78 33 48 E7 5A EB 0F 2F D7 B1 69 BB 8D C1 67 87 
   plaintext AC13C0F7 52892B5B  --->  ciphertext B7B3422F 92FC6903  

4. key = DC 49 DB 13 75 A5 58 4F 64 85 B4 13 B5 F1 2B AF 
   plaintext B7B3422F 92FC6903  --->  ciphertext B278C165 CC97D184  

5. key = 52 69 F1 49 D4 1B A0 15 24 97 57 4D 7F 15 31 25 
   plaintext B278C165 CC97D184  --->  ciphertext 15E444EB 249831DA  

   Time_t for 100000 blocks:  1