Why was "tantrum" trending last week?
(The initials of the authors)
1. RSA Data Security, Inc.
2. Their cryptography systems, especially RSA encryption.
The RSA algorithm was first described in the paper:
[R. Rivest, A. Shamir, L. Adleman, "A Method for Obtaining Digital Signatures and Public-key Cryptosystems". CACM 21,2; 1978]