I want to integrate my salesforce instance with some external website (Having Its own api)by using REST API where I have to authecticate myself/my_application with the external website by using key assigned by external website.

How Can I do this? I want to know the steps required to do this.

Thanks in advance.

closed as too broad by Keith C, superfell, crmprogdev, dphil, metadaddy Oct 27 '15 at 17:40

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • What is the website developed in ? – Mihai Neagoe Oct 27 '15 at 13:37
  • You need to ask a more specific question - what is the website? Does it use a standard, such as OAuth? – metadaddy Oct 27 '15 at 17:41
  • Website is CompaniesHouse.gov.uk from where I want to get information about companies and their financial records like annual revenue etc.. The website uses standard as I cant get information without authentication of me from companiesHouse API. – Khawaja M. Awais Oct 28 '15 at 5:19