diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..c2065bc
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,37 @@
+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..fde24e6
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,50 @@
+plugins {
+    id 'java-library'
+    id 'maven-publish'
+    id 'io.spring.dependency-management' version '1.1.0'
+}
+
+group = 'online.partyrun'
+version = '0.0.1-SNAPSHOT'
+sourceCompatibility = '17'
+
+configurations {
+    compileOnly {
+        extendsFrom annotationProcessor
+    }
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation 'org.springframework.boot:spring-boot-starter:3.1.0'
+    implementation 'io.jsonwebtoken:jjwt-api:0.11.5'
+    implementation 'io.jsonwebtoken:jjwt-impl:0.11.5'
+    implementation 'io.jsonwebtoken:jjwt-jackson:0.11.5'
+
+    compileOnly 'org.projectlombok:lombok:1.18.26'
+    annotationProcessor 'org.projectlombok:lombok:1.18.26'
+
+    testCompileOnly 'org.projectlombok:lombok:1.18.26'
+    testAnnotationProcessor 'org.projectlombok:lombok:1.18.26'
+
+    testImplementation 'org.springframework.boot:spring-boot-starter-test:3.1.0'
+}
+
+tasks.named('test') {
+    useJUnitPlatform()
+}
+
+publishing {
+    publications {
+        mavenJava(MavenPublication) {
+            groupId = 'online'
+            artifactId = 'partyrun'
+            version = '0.1.0'
+
+            from components.java
+        }
+    }
+}
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..249e583
Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..774fae8
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.1-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
new file mode 100755
index 0000000..a69d9cb
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,240 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000..53a6b23
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,91 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/jitpack.yml b/jitpack.yml
new file mode 100644
index 0000000..31f31ba
--- /dev/null
+++ b/jitpack.yml
@@ -0,0 +1,4 @@
+jdk:
+  - openjdk17
+install:
+  - ./gradlew assemble publishToMavenLocal
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 0000000..2e1e48c
--- /dev/null
+++ b/settings.gradle
@@ -0,0 +1 @@
+rootProject.name = 'jwt-manager'
diff --git a/src/main/java/online/partyrun/jwtmanager/JwtExtractor.java b/src/main/java/online/partyrun/jwtmanager/JwtExtractor.java
new file mode 100644
index 0000000..13718d5
--- /dev/null
+++ b/src/main/java/online/partyrun/jwtmanager/JwtExtractor.java
@@ -0,0 +1,7 @@
+package online.partyrun.jwtmanager;
+
+import online.partyrun.jwtmanager.dto.JwtPayload;
+
+public interface JwtExtractor {
+    JwtPayload extract(String accessToken);
+}
diff --git a/src/main/java/online/partyrun/jwtmanager/JwtGenerator.java b/src/main/java/online/partyrun/jwtmanager/JwtGenerator.java
new file mode 100644
index 0000000..41f5d3e
--- /dev/null
+++ b/src/main/java/online/partyrun/jwtmanager/JwtGenerator.java
@@ -0,0 +1,9 @@
+package online.partyrun.jwtmanager;
+
+import online.partyrun.jwtmanager.dto.JwtToken;
+
+public interface JwtGenerator {
+    JwtToken generate(String id);
+
+    String generateAccessToken(String refreshToken);
+}
diff --git a/src/main/java/online/partyrun/jwtmanager/config/ClockConfig.java b/src/main/java/online/partyrun/jwtmanager/config/ClockConfig.java
new file mode 100644
index 0000000..eac426b
--- /dev/null
+++ b/src/main/java/online/partyrun/jwtmanager/config/ClockConfig.java
@@ -0,0 +1,20 @@
+package online.partyrun.jwtmanager.config;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import java.time.Clock;
+
+@Configuration
+@Slf4j
+@ConditionalOnMissingBean(Clock.class)
+public class ClockConfig {
+
+    @Bean
+    public Clock clock() {
+        log.info("Initializing Clock");
+        return Clock.systemDefaultZone();
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/online/partyrun/jwtmanager/config/JwtConfig.java b/src/main/java/online/partyrun/jwtmanager/config/JwtConfig.java
new file mode 100644
index 0000000..8b6413b
--- /dev/null
+++ b/src/main/java/online/partyrun/jwtmanager/config/JwtConfig.java
@@ -0,0 +1,38 @@
+package online.partyrun.jwtmanager.config;
+
+import lombok.AccessLevel;
+import lombok.RequiredArgsConstructor;
+import lombok.experimental.FieldDefaults;
+import lombok.extern.slf4j.Slf4j;
+import online.partyrun.jwtmanager.manager.JwtManager;
+import online.partyrun.jwtmanager.manager.TokenManager;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.autoconfigure.AutoConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Import;
+
+import java.time.Clock;
+
+@Slf4j
+@AutoConfiguration
+@RequiredArgsConstructor
+@Import(ClockConfig.class)
+@FieldDefaults(level = AccessLevel.PRIVATE, makeFinal = true)
+public class JwtConfig {
+
+    Clock clock;
+
+    @Bean
+    public JwtManager jwtManager(@Value("${jwt.access-secret-key}") String accessKey,
+                                 @Value("${jwt.access-expire-second}") Long accessExpireSecond,
+                                 @Value("${jwt.refresh-secret-key}") String refreshKey,
+                                 @Value("${jwt.refresh-expire-second}") Long refreshExpireSecond
+    ) {
+        log.info("Starting JwtManager");
+        return new JwtManager(tokenManager(accessKey, accessExpireSecond), tokenManager(refreshKey, refreshExpireSecond));
+    }
+
+    private TokenManager tokenManager(String key, long tokenExpireSecond) {
+        return new TokenManager(key, tokenExpireSecond, clock);
+    }
+}
diff --git a/src/main/java/online/partyrun/jwtmanager/dto/JwtPayload.java b/src/main/java/online/partyrun/jwtmanager/dto/JwtPayload.java
new file mode 100644
index 0000000..b8f6b45
--- /dev/null
+++ b/src/main/java/online/partyrun/jwtmanager/dto/JwtPayload.java
@@ -0,0 +1,6 @@
+package online.partyrun.jwtmanager.dto;
+
+import java.time.LocalDateTime;
+
+public record JwtPayload(String id, LocalDateTime expireAt) {
+}
diff --git a/src/main/java/online/partyrun/jwtmanager/dto/JwtToken.java b/src/main/java/online/partyrun/jwtmanager/dto/JwtToken.java
new file mode 100644
index 0000000..9031d35
--- /dev/null
+++ b/src/main/java/online/partyrun/jwtmanager/dto/JwtToken.java
@@ -0,0 +1,8 @@
+package online.partyrun.jwtmanager.dto;
+
+import lombok.Builder;
+
+@Builder
+public record JwtToken(String accessToken, String refreshToken) {
+}
+
diff --git a/src/main/java/online/partyrun/jwtmanager/manager/JwtManager.java b/src/main/java/online/partyrun/jwtmanager/manager/JwtManager.java
new file mode 100644
index 0000000..5a59c89
--- /dev/null
+++ b/src/main/java/online/partyrun/jwtmanager/manager/JwtManager.java
@@ -0,0 +1,36 @@
+package online.partyrun.jwtmanager.manager;
+
+import lombok.AccessLevel;
+import lombok.RequiredArgsConstructor;
+import lombok.experimental.FieldDefaults;
+import online.partyrun.jwtmanager.JwtExtractor;
+import online.partyrun.jwtmanager.JwtGenerator;
+import online.partyrun.jwtmanager.dto.JwtPayload;
+import online.partyrun.jwtmanager.dto.JwtToken;
+
+@FieldDefaults(level = AccessLevel.PRIVATE, makeFinal = true)
+@RequiredArgsConstructor
+public class JwtManager implements JwtGenerator, JwtExtractor {
+
+    TokenManager accessTokenManager;
+    TokenManager refreshTokenManager;
+
+    @Override
+    public JwtToken generate(String id) {
+        return JwtToken.builder()
+                .accessToken(accessTokenManager.generate(id))
+                .refreshToken(refreshTokenManager.generate(id))
+                .build();
+    }
+
+    @Override
+    public JwtPayload extract(String accessToken) {
+        return accessTokenManager.extract(accessToken);
+    }
+
+    @Override
+    public String generateAccessToken(String refreshToken) {
+        final JwtPayload extract = refreshTokenManager.extract(refreshToken);
+        return accessTokenManager.generate(extract.id());
+    }
+}
diff --git a/src/main/java/online/partyrun/jwtmanager/manager/TokenManager.java b/src/main/java/online/partyrun/jwtmanager/manager/TokenManager.java
new file mode 100644
index 0000000..cc2d62d
--- /dev/null
+++ b/src/main/java/online/partyrun/jwtmanager/manager/TokenManager.java
@@ -0,0 +1,86 @@
+package online.partyrun.jwtmanager.manager;
+
+import io.jsonwebtoken.Claims;
+import io.jsonwebtoken.Jwts;
+import io.jsonwebtoken.SignatureAlgorithm;
+import io.jsonwebtoken.io.Decoders;
+import io.jsonwebtoken.security.Keys;
+import lombok.AccessLevel;
+import lombok.experimental.FieldDefaults;
+import online.partyrun.jwtmanager.dto.JwtPayload;
+import org.springframework.util.StringUtils;
+
+import java.security.Key;
+import java.sql.Timestamp;
+import java.time.Clock;
+import java.time.LocalDateTime;
+
+@FieldDefaults(level = AccessLevel.PRIVATE, makeFinal = true)
+public class TokenManager {
+
+    private static final String ID = "id";
+
+    Key key;
+    long expireSeconds;
+    Clock clock;
+
+    public TokenManager(String key, long expireSeconds, Clock clock) {
+        validateExpireSecond(expireSeconds);
+
+        this.key = Keys.hmacShaKeyFor(Decoders.BASE64.decode(key));
+        this.expireSeconds = expireSeconds;
+        this.clock = clock;
+    }
+
+    private void validateExpireSecond(long expireSecond) {
+        if (expireSecond <= 0) {
+            throw new IllegalArgumentException("expire seconds는 0보다 커야합니다.");
+        }
+    }
+
+    public String generate(String id) {
+        validateId(id);
+        final Claims claims = getClaims(id);
+        return generateToken(claims, expireSeconds);
+    }
+
+    private void validateId(String id) {
+        if (!StringUtils.hasText(id)) {
+            throw new IllegalArgumentException("id는 빈 값 일 수 없습니다.");
+        }
+    }
+
+    private Claims getClaims(String id) {
+        final Claims claims = Jwts.claims();
+        claims.put(ID, id);
+        return claims;
+    }
+
+    private String generateToken(Claims claims, long expireSecond) {
+        final LocalDateTime now = LocalDateTime.now(clock);
+        final LocalDateTime expireAt = now.plusSeconds(expireSecond);
+
+        return Jwts.builder()
+                .setSubject(claims.get(ID, String.class))
+                .setClaims(claims)
+                .setExpiration(Timestamp.valueOf(expireAt))
+                .signWith(key, SignatureAlgorithm.HS512)
+                .compact();
+    }
+
+    public JwtPayload extract(String accessToken) {
+        final Claims claims = parseClaims(accessToken);
+        final String id = claims.get(ID, String.class);
+        final LocalDateTime expireAt = new Timestamp(claims.getExpiration().getTime()).toLocalDateTime();
+
+        return new JwtPayload(id, expireAt);
+    }
+
+    private Claims parseClaims(String accessToken) {
+        return Jwts.parserBuilder()
+                .setSigningKey(key)
+                .build()
+                .parseClaimsJws(accessToken)
+                .getBody();
+    }
+}
diff --git a/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports b/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports
new file mode 100644
index 0000000..fc54634
--- /dev/null
+++ b/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports
@@ -0,0 +1 @@
+online.partyrun.jwtmanager.config.JwtConfig
\ No newline at end of file
diff --git a/src/test/java/online/partyrun/jwtmanager/manager/JwtManagerTest.java b/src/test/java/online/partyrun/jwtmanager/manager/JwtManagerTest.java
new file mode 100644
index 0000000..5edf291
--- /dev/null
+++ b/src/test/java/online/partyrun/jwtmanager/manager/JwtManagerTest.java
@@ -0,0 +1,62 @@
+package online.partyrun.jwtmanager.manager;
+
+import lombok.AccessLevel;
+import lombok.experimental.FieldDefaults;
+import online.partyrun.jwtmanager.dto.JwtToken;
+import org.junit.jupiter.api.*;
+
+import java.time.Clock;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.jupiter.api.Assertions.assertAll;
+
+@DisplayName("JwtManagerTest 클래스")
+@FieldDefaults(level = AccessLevel.PRIVATE)
+class JwtManagerTest {
+    Clock clock = Clock.systemDefaultZone();
+    String accessKey = "accessdasdadasdadasdasdasdadasdadasdasdasdadasdadasdasdasdadasdadasdasdasdadasdadasdasdasdadasd";
+    long accessExpireSeconds = 2_592_000;
+    String refreshKey = "refreshaasdadasdadasdasdasdadasdadasdasdasdadasdadasdasdasdadasdadasdasdasdadasdasdasdasdadasd";
+    long refreshExpireSeconds = 7_776_000;
+    TokenManager accessTokenManager = new TokenManager(accessKey,accessExpireSeconds,clock);
+    TokenManager refreshTokenManager = new TokenManager(refreshKey,refreshExpireSeconds,clock);
+
+    JwtManager jwtManager = new JwtManager(accessTokenManager, refreshTokenManager);
+    String id = "asdf";
+
+    @Nested
+    @DisplayNameGeneration(DisplayNameGenerator.ReplaceUnderscores.class)
+    class generate_메서드는 {
+        @Nested
+        @DisplayNameGeneration(DisplayNameGenerator.ReplaceUnderscores.class)
+        class id가_주어지면 {
+
+            @Test
+            @DisplayName("JwtToken을 반환한다.")
+            void returnJwtToken() {
+                final JwtToken result = jwtManager.generate(id);
+                assertAll(
+                        () -> assertThat(result.accessToken()).isNotNull(),
+                        () -> assertThat(result.refreshToken()).isNotNull()
+                );
+            }
+        }
+    }
+
+    @Nested
+    @DisplayNameGeneration(DisplayNameGenerator.ReplaceUnderscores.class)
+    class generateAccessToken_메서드는 {
+        @Nested
+        @DisplayNameGeneration(DisplayNameGenerator.ReplaceUnderscores.class)
+        class refreshToken이_주어지면 {
+            final String refreshToken = jwtManager.generate(id).refreshToken();
+
+            @Test
+            @DisplayName("access token을 반환한다")
+            void returnAccessToken() {
+                final String accessToken = jwtManager.generateAccessToken(refreshToken);
+                assertThat(accessToken).isNotNull();
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/test/java/online/partyrun/jwtmanager/manager/TokenManagerTest.java b/src/test/java/online/partyrun/jwtmanager/manager/TokenManagerTest.java
new file mode 100644
index 0000000..926c952
--- /dev/null
+++ b/src/test/java/online/partyrun/jwtmanager/manager/TokenManagerTest.java
@@ -0,0 +1,127 @@
+package online.partyrun.jwtmanager.manager;
+
+import io.jsonwebtoken.MalformedJwtException;
+import lombok.AccessLevel;
+import lombok.experimental.FieldDefaults;
+import online.partyrun.jwtmanager.dto.JwtPayload;
+import org.junit.jupiter.api.*;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.EmptySource;
+import org.junit.jupiter.params.provider.NullSource;
+import org.junit.jupiter.params.provider.ValueSource;
+
+import java.time.Clock;
+import java.time.LocalDateTime;
+import java.time.temporal.ChronoUnit;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.junit.jupiter.api.Assertions.assertAll;
+
+@DisplayName("TokenManager 클래스")
+@FieldDefaults(level = AccessLevel.PRIVATE, makeFinal = true)
+class TokenManagerTest {
+
+    String id = "1";
+    String key = "asdasdasdadasdadasdasdasdadasdadasdasdasdadasdadasdasdasdadasdadasdasdasdadasdadasdasdasdadasd";
+    long expireSeconds = 2_592_000;
+    Clock clock = Clock.systemDefaultZone();
+    TokenManager tokenManager = new TokenManager(key, expireSeconds, clock);
+
+    @Nested
+    @DisplayNameGeneration(DisplayNameGenerator.ReplaceUnderscores.class)
+    class tokenMaanger를_생성할_때 {
+
+        @Nested
+        @DisplayNameGeneration(DisplayNameGenerator.ReplaceUnderscores.class)
+        class expireSeconds가_0이하라면 {
+
+            @ParameterizedTest
+            @ValueSource(longs = {-1, 0})
+            @DisplayName("예외를 반환한다.")
+            void throwException(long expireSeconds) {
+                assertThatThrownBy(() -> new TokenManager(key, expireSeconds, clock))
+                        .isInstanceOf(IllegalArgumentException.class);
+            }
+        }
+    }
+
+    @Nested
+    @DisplayNameGeneration(DisplayNameGenerator.ReplaceUnderscores.class)
+    class generate_메서드는 {
+        @Nested
+        @DisplayNameGeneration(DisplayNameGenerator.ReplaceUnderscores.class)
+        class id가_주어지면 {
+            @Test
+            @DisplayName("jwt 토큰을 반환한다.")
+            void returnToken() {
+                final String generate = tokenManager.generate(id);
+                assertThat(generate.split("\\.")).hasSize(3);
+            }
+        }
+
+        @Nested
+        @DisplayNameGeneration(DisplayNameGenerator.ReplaceUnderscores.class)
+        class id가_비거나_null이면 {
+
+            @ParameterizedTest
+            @NullSource
+            @EmptySource
+            @DisplayName("예외를 반환한다.")
+            void throwException(String id) {
+                assertThatThrownBy(() -> tokenManager.generate(id))
+                        .isInstanceOf(IllegalArgumentException.class);
+            }
+        }
+    }
+
+    @Nested
+    @DisplayNameGeneration(DisplayNameGenerator.ReplaceUnderscores.class)
+    class extract_메서드는 {
+
+
+        @Nested
+        @DisplayNameGeneration(DisplayNameGenerator.ReplaceUnderscores.class)
+        class accessToken이_주어지면 {
+            String accessToken = tokenManager.generate(id);
+
+            @Test
+            @DisplayName("JwtPayload를 반환한다")
+            void returnJwtPayload() {
+                final JwtPayload result = tokenManager.extract(accessToken);
+                assertAll(
+                        () -> assertThat(result.id()).isEqualTo(id),
+                        () -> assertThat(result.expireAt())
+                                .isEqualTo(LocalDateTime.now(clock)
+                                        .plusSeconds(expireSeconds)
+                                        .truncatedTo(ChronoUnit.SECONDS))
+                );
+            }
+        }
+
+        @Nested
+        @DisplayNameGeneration(DisplayNameGenerator.ReplaceUnderscores.class)
+        class accessToken이_없거나_null이면 {
+            @ParameterizedTest
+            @NullSource
+            @EmptySource
+            @DisplayName("예외를 반환한다.")
+            void throwException(String accessToken) {
+                assertThatThrownBy(() -> tokenManager.extract(accessToken))
+                        .isInstanceOf(IllegalArgumentException.class);
+            }
+        }
+
+        @Nested
+        @DisplayNameGeneration(DisplayNameGenerator.ReplaceUnderscores.class)
+        class accessToken이_형식이_잘못됐으면 {
+            @ParameterizedTest
+            @ValueSource(strings = {"qwer.adsf.zxcv","invaild token"})
+            @DisplayName("예외를 반환한다.")
+            void throwException(String accessToken) {
+                assertThatThrownBy(() -> tokenManager.extract(accessToken))
+                        .isInstanceOf(MalformedJwtException.class);
+            }
+        }
+    }
+}