Who first chose the names Alice and Bob for the players (or observers) A and B?



Who first chose the names Alice and Bob for players A and B?
Quoted from [Wikipedia](https://en.wikipedia.org/wiki/Alice_and_Bob):



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> *The Alice and Bob characters were invented by Ron Rivest, Adi Shamir, and Leonard Adleman in their 1978 paper "A method for obtaining digital signatures and public-key cryptosystems".*
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*Rivest, R. L.; Shamir, A.; Adleman, L.*, [**A method for obtaining digital signatures and public-key cryptosystems**](http://dx.doi.org/10.1145/359340.359342), Commun. ACM 21, 120-126 (1978). [ZBL0368.94005](https://zbmath.org/?q=an:0368.94005).


