ssl - Using browser's certificate (private key) to sign some string in javascript -

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my users have certificates (private keys) installed in web browser. these certificates used browser authenticate user on third party websites.

i sign string using 1 of private keys, when user uses/visits my website. there javascript api or function, enable this?

short answer, can't sign string delivered through web browser using java script , client certificate end user.

in case user certificates , keys used tls client authentication:

  • during tls handshake server request browser present tls client certificate.
  • the browser pick suitable client certificate , establish tls connection.
  • once done, server deliver content: html , js, images...
  • the browser render page elements.

the browser has api access client certificates , keys not exposed java script engine.


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