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ssl-certificatekeytooldigital-certificate

Retrieve .csr file from jks/cer file

I want to retrieve the csr file from jks or cer file (have lost the .csr file). Please let know if it's possible from keytool command.

Solution

  • You cannot generate a certificate request from a certificate file. You can only do it for a KeyPair that is in your keystore (jks). You can run this keytool command to generate a csr (pkcs#10)

    keytool -certreq -keystore [KEYSTORE_PATH] -storepass [KEYSTORE_PASSWORD] -alias [KEYPAIR_ALIAS] -file [CSR_FILE]

    You can see the content of the csr you generated by using the below command.

    keytool -printcertreq -file [CSR_FILE]