Alice and Bob can go on a holiday!

Any book on cryptography invariably involves the characters Alice and Bob. It is always Alice who wants to send a message to Bob.
This informal article replaces the traditional dramatis personnae of cryptography, with Sita and Rama drawn from Hindu mythology.

• The first letters of their names S (Sita) and R (Rama) hint at sender
and receiver respectively.
• This choice retains the usual roles of women being at the shouting end
S and men being at the receiving end R (Note : No offense meant to
ladies who read this).
• Hanuman (honest man) is the trusted medium for carrying the message.
• Ravana (rogue) is the man-in-the-middle. The name Ravana is a bad
choice, since the first letter (R) of the name, can be confused for Re-
ceiver 2 . We propose Badmash (lit. bad man), although he is not part
of Ramayana.
• The sender Sita, and the receiver Rama, are separated by a hostile
environment. They can trust nobody, and have to take a lot of precau-
tions.
• Hanuman is known to be a strong person. We need a strong (secure)
medium to transmit our messages.
• Hanuman is famous for his devotion to Rama and Sita. The medium
we choose must be trustable.
• Hanuman is often tactful and can change his appearance and shape
(and even become invisible). The medium should be intelligent, to
conceal and protect messages under its custody.
• Hanuman can fly, and avoid obstacles in his way. This is a quality we
expect of the medium (or the method adopted to transmit messages).

>http://profpartha.webs.com/publications/alicebob.pdf

>>1
In fact Alice and Bob stand for Aleph and Beth. It is a common practice in Freemasonry to veil openly Jewish stuff with less offensive names.