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Export the Public Key Certificate

You now have a signed JAR file sContract.jar. Clients wanting to use the file will want to authenticate the signature. In order to do so, they need the public key corresponding to the private key used to generate the signature. You supply this by sending them a copy of the certificate containing the public key. Copy that certificate from the keystore stanstore to a file named StanSmith.cer via the following:

keytool -export -keystore stanstore -alias signLegal -file StanSmith.cer

You will be prompted for the store password (balloon53).

Given that certificate and the signed JAR file, a client can use the jarsigner tool to authenticate your signature, as you will see next.

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