Digital Certificates

Form of cryptographic security but different from Encryption

  • Provide a means of proving your identity in electronic transactions, much like a driver license or a passport does in face-to-face interactions.
  • Can assure friends, business associates, and online services that the electronic information they receive from you are authentic.
  • You don’t know this guy, but I do, and he’s okay by me – Stamped by me
  • Used for a variety of electronic transactions including e-mail, electronic commerce, groupware and electronic funds transfers
  • Provides a “lock” required for encrypting the information and a tool for “identification” to identify the opponent technically
  • Certificate is an electronic document that uses a digital signature to sign the public key created by the RSA algorithm (asymmetric-key cryptography) with the private key of the certificate authority (CA).
  • Issued by CA & signed with CA’s private key.
  • To authenticate – need a certificate , private & public key
  • A digital code that can be attached to an electronically transmitted message that uniquely identifies the sender. Like a written signature, the purpose of a digital signature is to guarantee that the individual sending the message really is who he or she claims to be. Digital signatures are especially important for electronic commerce and are a key component of most authentication schemes. To be effective, digital signatures must be unforgeable. There are a number of different encryption techniques to guarantee this level of security.
  • Issuers – Verisign, Thawte.
  • In India – TCS,NIC,IDRBT Certifying Authority, SafeScrypt, CA Services, MTNL Trust Line, E-MUDHRA
  • CA Authority in India – RCAI – Root certifying Authority of India

SECURITY
security security Keys

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