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Sorry I am a beginner about ssl cert.

according to

http://tomcat.apache.org/tomcat-7.0-doc/ssl-howto.html#Create_a_local_Certificate_Signing_Request_(CSR)

it will gen a keystore and CSR.

we generate the CSR and send to Certificate Authority.

What if I lost the keystore ? should I regen the CSR again to reapply the ssl cert?

Refer to https://search.thawte.com/support/ssl-digital-certificates/index?page=content&id=SO832 It will generate a new keystore file.

is it the file store the private key? which stated in https://search.thawte.com/support/ssl-digital-certificates/index?page=content&id=SO750 , which say

1. Private Key file loss.

2. Private Key pass phrase loss.

3. Private Key file has been compromised due to the server being hacked.   
...... 
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1 Answer 1

Yeah, if you've lost the keystore then you've lost the private key.

The certificate generated from that CSR is now unusable to you, but the certificate authority should happily re-issue a new certificate if you generate a new CSR from a new private key.

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