diff --git a/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/adapter/in/web/PassInfoController.kt b/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/adapter/in/web/PassInfoController.kt
new file mode 100644
index 0000000..5c7db04
--- /dev/null
+++ b/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/adapter/in/web/PassInfoController.kt
@@ -0,0 +1,40 @@
+package hs.kr.entrydsm.user.domain.auth.adapter.`in`.web
+
+import hs.kr.entrydsm.user.domain.auth.adapter.`in`.web.dto.request.PassPopupRequest
+import hs.kr.entrydsm.user.domain.auth.adapter.`in`.web.dto.resopnse.QueryPassInfoResponse
+import hs.kr.entrydsm.user.domain.auth.application.port.`in`.PassPopupUseCase
+import hs.kr.entrydsm.user.domain.auth.application.port.`in`.QueryPassInfoUseCase
+import hs.kr.entrydsm.user.global.document.auth.AuthApiDocument
+import jakarta.validation.Valid
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.PostMapping
+import org.springframework.web.bind.annotation.RequestBody
+import org.springframework.web.bind.annotation.RequestMapping
+import org.springframework.web.bind.annotation.RequestParam
+import org.springframework.web.bind.annotation.RestController
+
+/**
+ * 패스 인증 관련 HTTP 요청을 처리하는 REST 컨트롤러 클래스입니다.
+ */
+@RestController
+@RequestMapping("/user/verify")
+class PassInfoController(
+    private val passPopupUseCase: PassPopupUseCase,
+    private val queryPassInfoUseCase: QueryPassInfoUseCase,
+) : AuthApiDocument {
+    /**
+     * 패스 인증 정보를 조회합니다.
+     */
+    @GetMapping("/info")
+    override fun getPassInfo(
+        @RequestParam("mdl_tkn") token: String,
+    ): QueryPassInfoResponse = queryPassInfoUseCase.queryPassInfo(token)
+
+    /**
+     * 패스 인증 팝업을 생성합니다.
+     */
+    @PostMapping("/popup")
+    override fun popupPass(
+        @RequestBody request: @Valid PassPopupRequest,
+    ): String = passPopupUseCase.generatePopup(request)
+}
diff --git a/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/adapter/in/web/dto/request/PassPopupRequest.kt b/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/adapter/in/web/dto/request/PassPopupRequest.kt
new file mode 100644
index 0000000..0ecc451
--- /dev/null
+++ b/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/adapter/in/web/dto/request/PassPopupRequest.kt
@@ -0,0 +1,11 @@
+package hs.kr.entrydsm.user.domain.auth.adapter.`in`.web.dto.request
+
+import jakarta.validation.constraints.NotBlank
+
+/**
+ * 패스 팝업 생성 요청 데이터를 담는 DTO 클래스입니다.
+ */
+data class PassPopupRequest(
+    @NotBlank(message = "redirect_url은 Null 또는 공백 또는 띄어쓰기를 허용하지 않습니다.")
+    val redirectUrl: String,
+)
diff --git a/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/adapter/in/web/dto/resopnse/QueryPassInfoResponse.kt b/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/adapter/in/web/dto/resopnse/QueryPassInfoResponse.kt
new file mode 100644
index 0000000..b50213e
--- /dev/null
+++ b/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/adapter/in/web/dto/resopnse/QueryPassInfoResponse.kt
@@ -0,0 +1,9 @@
+package hs.kr.entrydsm.user.domain.auth.adapter.`in`.web.dto.resopnse
+
+/**
+ * 패스 인증 정보 조회 응답 데이터를 담는 DTO 클래스입니다.
+ */
+data class QueryPassInfoResponse(
+    val phoneNumber: String,
+    val name: String,
+)
diff --git a/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/adapter/out/PassInfo.kt b/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/adapter/out/PassInfo.kt
new file mode 100644
index 0000000..7ca1f9b
--- /dev/null
+++ b/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/adapter/out/PassInfo.kt
@@ -0,0 +1,24 @@
+package hs.kr.entrydsm.user.domain.auth.adapter.out
+
+import org.springframework.data.annotation.Id
+import org.springframework.data.redis.core.RedisHash
+import org.springframework.data.redis.core.TimeToLive
+import org.springframework.data.redis.core.index.Indexed
+
+/**
+ * Redis에 저장되는 Pass 인증 정보를 나타내는 클래스입니다.
+ * Pass 인증을 통해 검증된 사용자 정보를 임시로 저장합니다.
+ *
+ * @property phoneNumber 암호화된 전화번호 (Redis 키로 사용)
+ * @property name 암호화된 사용자 이름
+ * @property ttl Time To Live (데이터 만료 시간, 초 단위)
+ */
+@RedisHash
+class PassInfo(
+    @Id
+    val phoneNumberHash: String,
+    val phoneNumber: String,
+    val name: String,
+    @TimeToLive
+    val ttl: Long
+)
diff --git a/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/adapter/out/repository/PassInfoRepository.kt b/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/adapter/out/repository/PassInfoRepository.kt
new file mode 100644
index 0000000..cd2496c
--- /dev/null
+++ b/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/adapter/out/repository/PassInfoRepository.kt
@@ -0,0 +1,13 @@
+package hs.kr.entrydsm.user.domain.auth.adapter.out.repository
+
+import hs.kr.entrydsm.user.domain.auth.adapter.out.PassInfo
+import org.springframework.data.repository.CrudRepository
+import java.util.Optional
+
+/**
+ * Pass 인증 정보를 위한 Redis 저장소 인터페이스입니다.
+ * Spring Data Redis를 통해 Pass 인증 데이터의 관리를 담당합니다.
+ */
+interface PassInfoRepository : CrudRepository<PassInfo, String> {
+
+}
diff --git a/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/application/port/in/PassPopupUseCase.kt b/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/application/port/in/PassPopupUseCase.kt
new file mode 100644
index 0000000..c6ceefc
--- /dev/null
+++ b/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/application/port/in/PassPopupUseCase.kt
@@ -0,0 +1,13 @@
+package hs.kr.entrydsm.user.domain.auth.application.port.`in`
+
+import hs.kr.entrydsm.user.domain.auth.adapter.`in`.web.dto.request.PassPopupRequest
+
+/**
+ * 패스 팝업 생성 기능을 정의하는 UseCase 인터페이스입니다.
+ */
+interface PassPopupUseCase {
+    /**
+     * 패스 인증 팝업을 생성합니다.
+     */
+    fun generatePopup(request: PassPopupRequest): String
+}
diff --git a/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/application/port/in/QueryPassInfoUseCase.kt b/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/application/port/in/QueryPassInfoUseCase.kt
new file mode 100644
index 0000000..ba6f694
--- /dev/null
+++ b/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/application/port/in/QueryPassInfoUseCase.kt
@@ -0,0 +1,13 @@
+package hs.kr.entrydsm.user.domain.auth.application.port.`in`
+
+import hs.kr.entrydsm.user.domain.auth.adapter.`in`.web.dto.resopnse.QueryPassInfoResponse
+
+/**
+ * 패스 인증 정보 조회 기능을 정의하는 UseCase 인터페이스입니다.
+ */
+interface QueryPassInfoUseCase {
+    /**
+     * 토큰을 이용하여 패스 인증 정보를 조회합니다.
+     */
+    fun queryPassInfo(token: String?): QueryPassInfoResponse
+}
diff --git a/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/application/port/out/.gitkit b/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/application/port/out/.gitkit
new file mode 100644
index 0000000..e69de29
diff --git a/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/application/service/PassPopupService.kt b/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/application/service/PassPopupService.kt
new file mode 100644
index 0000000..b339263
--- /dev/null
+++ b/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/auth/application/service/PassPopupService.kt
@@ -0,0 +1,114 @@
+package hs.kr.entrydsm.user.domain.auth.application.service
+
+import hs.kr.entrydsm.user.domain.auth.adapter.`in`.web.dto.request.PassPopupRequest
+import hs.kr.entrydsm.user.domain.auth.application.port.`in`.PassPopupUseCase
+import hs.kr.entrydsm.user.global.exception.InternalServerErrorException
+import hs.kr.entrydsm.user.global.utils.pass.RedirectUrlChecker
+import kcb.module.v3.OkCert
+import org.json.JSONObject
+import org.springframework.beans.factory.annotation.Value
+import org.springframework.stereotype.Service
+import org.springframework.transaction.annotation.Transactional
+
+/**
+ * 패스 팝업 생성 비즈니스 로직을 처리하는 서비스 클래스입니다.
+ */
+@Service
+class PassPopupService(
+    private val redirectUrlChecker: RedirectUrlChecker,
+) : PassPopupUseCase {
+    companion object {
+        private const val TARGET = "PROD"
+        private val logger = LoggerFactory.getLogger(PassPopupService::class.java)
+    }
+
+    @Value("\${pass.site-name}")
+    private lateinit var siteName: String
+
+    @Value("\${pass.site-url}")
+    private lateinit var siteUrl: String
+
+    @Value("\${pass.popup-url}")
+    private lateinit var popupUrl: String
+
+    @Value("\${pass.cp-cd}")
+    private lateinit var cpCd: String
+
+    @Value("\${pass.license}")
+    private lateinit var license: String
+
+    private val svcName = "IDS_HS_POPUP_START"
+
+    private val rqstCausCd = "00"
+
+    /**
+     * 패스 인증 팝업 HTML을 생성합니다.
+     */
+    @Transactional
+    override fun generatePopup(passPopupRequest: PassPopupRequest): String {
+        redirectUrlChecker.checkRedirectUrl(passPopupRequest.redirectUrl)
+        try {
+            val reqJson = JSONObject()
+            reqJson.put("RETURN_URL", passPopupRequest.redirectUrl)
+            reqJson.put("SITE_NAME", siteName)
+            reqJson.put("SITE_URL", siteUrl)
+            reqJson.put("RQST_CAUS_CD", rqstCausCd)
+
+            val reqStr: String = reqJson.toString()
+
+            val okcert = OkCert()
+
+            val resultStr: String = okcert.callOkCert(TARGET, cpCd, svcName, license, reqStr)
+
+            val resJson = JSONObject(resultStr)
+
+            val rsltCd: String = resJson.getString("RSLT_CD")
+            val rsltMsg: String = resJson.getString("RSLT_MSG")
+            var mdlTkn = ""
+
+            var succ = false
+
+            if ("B000" == rsltCd && resJson.has("MDL_TKN")) {
+                mdlTkn = resJson.getString("MDL_TKN")
+                succ = true
+            }
+
+            val htmlBuilder = StringBuilder()
+            htmlBuilder.append("<html>")
+            htmlBuilder.append("<title>KCB 휴대폰 본인확인 서비스 샘플 2</title>")
+            htmlBuilder.append("<head>")
+            htmlBuilder.append("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=euc-kr\">")
+            htmlBuilder.append("<script type=\"text/javascript\">")
+            htmlBuilder.append("function request(){")
+            htmlBuilder.append("document.form1.action = \"$popupUrl\";")
+            htmlBuilder.append("document.form1.method = \"post\";")
+            htmlBuilder.append("document.form1.submit();")
+            htmlBuilder.append("}")
+            htmlBuilder.append("</script>")
+            htmlBuilder.append("</head>")
+            htmlBuilder.append("<body>")
+            htmlBuilder.append("<form name=\"form1\">")
+            htmlBuilder.append(
+                "<input type=\"hidden\" name=\"tc\" value=\"kcb.oknm.online.safehscert.popup.cmd.P931_CertChoiceCmd\"/>",
+            )
+            htmlBuilder.append("<input type=\"hidden\" name=\"cp_cd\" value=\"$cpCd\"/>")
+            htmlBuilder.append("<input type=\"hidden\" name=\"mdl_tkn\" value=\"$mdlTkn\"/>")
+            htmlBuilder.append("<input type=\"hidden\" name=\"target_id\" value=\"\"/>")
+            htmlBuilder.append("</form>")
+            htmlBuilder.append("</body>")
+            htmlBuilder.append("<script>")
+            if (succ) {
+                htmlBuilder.append("request();")
+            } else {
+                htmlBuilder.append("alert('$rsltCd : $rsltMsg'); self.close();")
+            }
+            htmlBuilder.append("</script>")
+            htmlBuilder.append("</html>")
+
+            return htmlBuilder.toString()
+        } catch (e: Exception) {
+            logger.error("Pass popup 생성 중 오류 발생: ${e.message}", e)
+            throw InternalServerErrorException
+        }
+    }
+}
diff --git a/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/refreshtoken/adapter/out/RefreshToken.kt b/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/refreshtoken/adapter/out/RefreshToken.kt
new file mode 100644
index 0000000..a261008
--- /dev/null
+++ b/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/refreshtoken/adapter/out/RefreshToken.kt
@@ -0,0 +1,38 @@
+package hs.kr.entrydsm.user.domain.refreshtoken.adapter.out
+
+import org.springframework.data.annotation.Id
+import org.springframework.data.redis.core.RedisHash
+import org.springframework.data.redis.core.TimeToLive
+import org.springframework.data.redis.core.index.Indexed
+
+/**
+ * Redis에 저장되는 리프레시 토큰 정보를 나타내는 클래스입니다.
+ * JWT 리프레시 토큰을 관리하여 토큰 갱신을 처리합니다.
+ *
+ * @property id 사용자 ID (Redis 키로 사용)
+ * @property token 리프레시 토큰 값
+ * @property ttl Time To Live (토큰 만료 시간, 초 단위)
+ */
+@RedisHash
+class RefreshToken(
+    @Id
+    val id: String,
+    @Indexed
+    var token: String,
+    @TimeToLive
+    var ttl: Long,
+) {
+    /**
+     * 리프레시 토큰과 TTL을 업데이트합니다.
+     *
+     * @param token 새로운 리프레시 토큰
+     * @param ttl 새로운 만료 시간 (초)
+     */
+    fun update(
+        token: String,
+        ttl: Long,
+    ) {
+        this.token = token
+        this.ttl = ttl
+    }
+}
diff --git a/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/refreshtoken/adapter/out/repository/RefreshTokenRepository.kt b/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/refreshtoken/adapter/out/repository/RefreshTokenRepository.kt
new file mode 100644
index 0000000..d0ee8f5
--- /dev/null
+++ b/casper-user/src/main/kotlin/hs/kr/entrydsm/user/domain/refreshtoken/adapter/out/repository/RefreshTokenRepository.kt
@@ -0,0 +1,14 @@
+package hs.kr.entrydsm.user.domain.refreshtoken.adapter.out.repository
+
+import hs.kr.entrydsm.user.domain.refreshtoken.adapter.out.RefreshToken
+import org.springframework.data.repository.CrudRepository
+
+/**
+ * 리프레시 토큰에 대한 Redis 액세스를 담당하는 리포지토리 인터페이스입니다.
+ */
+interface RefreshTokenRepository : CrudRepository<RefreshToken, String> {
+    /**
+     * 토큰 값으로 리프레시 토큰을 조회합니다.
+     */
+    fun findByToken(token: String): RefreshToken?
+}