The phrase "attaining the key" is correct and usable in written English.
It can be used in contexts where someone is trying to achieve or obtain something important or essential, often metaphorically.
Example: "After years of research, the scientist finally felt she was on the verge of attaining the key to a groundbreaking discovery."
Alternatives: "gaining the key" or "achieving the key".
Only when an attacker knows the master key s or solves Bilinear Differ-Hellman Problem can he/she attain the private key.
But politicians like to win, and mastering the art of cultural warfare (with the aim of winning a supposedly pivotal, culturally conservative slice of the political centre) was seen as the key to attaining the presidency.
Thus, the key to attaining the necessary and sufficient steady state conditions for both queues is to calculate \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$\mu $\end{document}.
An appropriate control configuration selection is identified as one of the key prerequisites for attaining the control objectives in industrial practices.
We in the global education field feel strongly that education holds a key to attaining the other SDGs.
Cooking and heating remain the most energy intensive activities among the world's poor, and thus improved access to clean energies for these tasks has been highlighted as a key requirement of attaining the major objectives of the UN Millennium Development Goals.
These drugs have dramatically reduced the morbidity and mortality due to HIV/AIDS, and drug quality is a key factor in attaining the long term goals of sustained viral suppression with minimal drug resistance.
There is an absolute need for more elaborate publicity and awareness about the MDGs among key players if attaining the MDGs is to be a reality (33).
Ultimately, the lucid dreaming adherents say attaining the revered state requires discipline and practice, and the key is being able to quickly distinguish dreams from reality.
