feat: jasypt 적용

jasypt 라이브러리 추가 및 설정파일 생성.
key는 gitignore에 추가했습니다.

backEnd/.gitignore

@@ -35,3 +35,5 @@ out/
 
 ### VS Code ###
 .vscode/
+
+application-key.yml

backEnd/build.gradle

@@ -25,6 +25,7 @@ dependencies {
 	implementation 'org.springframework.boot:spring-boot-starter-web'
 	compileOnly 'org.projectlombok:lombok'
 	developmentOnly 'org.springframework.boot:spring-boot-devtools'
+	implementation 'com.github.ulisesbocchio:jasypt-spring-boot-starter:3.0.5'
 	annotationProcessor 'org.projectlombok:lombok'
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
 }

backEnd/src/main/java/com/quiz/ourClass/global/config/JasyptConfig.java

@@ -0,0 +1,33 @@
+package com.quiz.ourClass.global.config;
+
+import com.ulisesbocchio.jasyptspringboot.annotation.EnableEncryptableProperties;
+import org.jasypt.encryption.StringEncryptor;
+import org.jasypt.encryption.pbe.PooledPBEStringEncryptor;
+import org.jasypt.encryption.pbe.config.SimpleStringPBEConfig;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@EnableEncryptableProperties
+public class JasyptConfig {
+
+    @Value("${jasypt.encryptor.key}")
+    String key;
+
+    @Bean(name = "jasyptStringEncryptor")
+    public StringEncryptor stringEncryptor() {
+
+        PooledPBEStringEncryptor encryptor = new PooledPBEStringEncryptor();
+        SimpleStringPBEConfig config = new SimpleStringPBEConfig();
+        config.setPassword(key);
+        config.setAlgorithm("PBEWithMD5AndDES");
+        config.setKeyObtentionIterations("1000");
+        config.setPoolSize("1");
+        config.setProviderName("SunJCE");
+        config.setSaltGeneratorClassName("org.jasypt.salt.RandomSaltGenerator");
+        config.setStringOutputType("base64");
+        encryptor.setConfig(config);
+        return encryptor;
+    }
+}