Using PEM File in Spring Boot
PEM (Privacy Enhanced Mail) files are a type of file used to store cryptographic keys and certificates. They are commonly used in web applications, such as those built with Spring Boot, to secure communication between the server and client. In this article, we will discuss how to use a PEM file in a Spring Boot application.
Step 1: Generate the PEM File
The first step is to generate the PEM file. This can be done using OpenSSL or other tools. The command for generating a PEM file is:
openssl req -x509 -newkey rsa:2048 -keyout key.pem -out cert.pem -days 365This command will generate two files: key.pem and cert.pem. The key.pem file contains the private key, while the cert.pem file contains the public certificate.
Step 2: Configure Spring Boot Application
Once the PEM files have been generated, they need to be configured in the Spring Boot application. This can be done by adding the following configuration to the application.properties file:
server.ssl.key-store=classpath:keystore/keystore.jks
server.ssl.key-store-password=changeit
server.ssl.key-alias=mykey
server.ssl.key-password=changeit
server.ssl.trust-store=classpath:truststore/truststore.jks
server.ssl.trust-store-password=changeitStep 3: Convert PEM Files to JKS Format
The next step is to convert the PEM files into JKS format so that they can be used by the Spring Boot application. This can be done using the Java Keytool utility, which is included with Java JDK installations.
keytool -importcert -file cert.pem -alias mycert -keystore keystore/keystore.jks -storepass changeitStep 4: Start the Application
Once all of the steps above have been completed, you can start your Spring Boot application and it should now be secured using your PEM files.
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