Bruce Kallick. Handycipher: a Low-tech, Randomized, Symmetric-key Cryptosystem. IACR Cryptology ePrint Archive, 2014:257, 2014. [doi]
@article{Kallick14, title = {Handycipher: a Low-tech, Randomized, Symmetric-key Cryptosystem}, author = {Bruce Kallick}, year = {2014}, url = {http://eprint.iacr.org/2014/257}, researchr = {https://researchr.org/publication/Kallick14}, cites = {0}, citedby = {0}, journal = {IACR Cryptology ePrint Archive}, volume = {2014}, pages = {257}, }