From 818b1fa6d901b54225fd37ccf668e402b011ae82 Mon Sep 17 00:00:00 2001
From: csct3434 <csct3434@gmail.com>
Date: Wed, 27 Mar 2024 17:52:12 +0900
Subject: [PATCH] =?UTF-8?q?feat:=20JPA=20AttributeConverter=20=EA=B5=AC?=
 =?UTF-8?q?=ED=98=84=EC=B2=B4=20=EC=B6=94=EA=B0=80?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../common/cipher/CipherProperties.java       | 18 ++++++
 .../seasoning/common/cipher/CipherUtil.java   | 58 +++++++++++++++++++
 .../common/cipher/CryptoConverter.java        | 22 +++++++
 3 files changed, 98 insertions(+)
 create mode 100644 src/main/java/today/seasoning/seasoning/common/cipher/CipherProperties.java
 create mode 100644 src/main/java/today/seasoning/seasoning/common/cipher/CipherUtil.java
 create mode 100644 src/main/java/today/seasoning/seasoning/common/cipher/CryptoConverter.java

diff --git a/src/main/java/today/seasoning/seasoning/common/cipher/CipherProperties.java b/src/main/java/today/seasoning/seasoning/common/cipher/CipherProperties.java
new file mode 100644
index 0000000..a9cc628
--- /dev/null
+++ b/src/main/java/today/seasoning/seasoning/common/cipher/CipherProperties.java
@@ -0,0 +1,18 @@
+package today.seasoning.seasoning.common.cipher;
+
+import lombok.Getter;
+import lombok.Setter;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.stereotype.Component;
+
+@Getter
+@Setter
+@Component
+@ConfigurationProperties(prefix = "cipher")
+public class CipherProperties {
+
+    private String secretKey;
+    private String algorithm;
+    private String transformation;
+    private String iv;
+}
diff --git a/src/main/java/today/seasoning/seasoning/common/cipher/CipherUtil.java b/src/main/java/today/seasoning/seasoning/common/cipher/CipherUtil.java
new file mode 100644
index 0000000..40bb04e
--- /dev/null
+++ b/src/main/java/today/seasoning/seasoning/common/cipher/CipherUtil.java
@@ -0,0 +1,58 @@
+package today.seasoning.seasoning.common.cipher;
+
+import static java.nio.charset.StandardCharsets.UTF_8;
+
+import java.security.NoSuchAlgorithmException;
+import javax.crypto.Cipher;
+import javax.crypto.NoSuchPaddingException;
+import javax.crypto.spec.IvParameterSpec;
+import javax.crypto.spec.SecretKeySpec;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.codec.binary.Base64;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Slf4j
+@Component
+public class CipherUtil {
+
+    private final Cipher cipher;
+    private final SecretKeySpec secretKeySpec;
+    private final IvParameterSpec ivParameterSpec;
+
+    @Autowired
+    public CipherUtil(CipherProperties properties) throws NoSuchPaddingException, NoSuchAlgorithmException {
+        this.secretKeySpec = new SecretKeySpec(properties.getSecretKey().getBytes(UTF_8), properties.getAlgorithm());
+        this.ivParameterSpec = new IvParameterSpec(properties.getIv().getBytes());
+        this.cipher = Cipher.getInstance(properties.getTransformation());
+    }
+
+    public String encode(String plainText) {
+        if (plainText == null) {
+            return null;
+        }
+
+        try {
+            cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec, ivParameterSpec);
+            byte[] encrypted = cipher.doFinal(plainText.getBytes(UTF_8));
+            return Base64.encodeBase64String(encrypted);
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public String decode(String encodedText) {
+        if (encodedText == null) {
+            return null;
+        }
+
+        try {
+            cipher.init(Cipher.DECRYPT_MODE, secretKeySpec, ivParameterSpec);
+            byte[] decoded = cipher.doFinal(Base64.decodeBase64(encodedText));
+            return new String(decoded, UTF_8);
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+}
diff --git a/src/main/java/today/seasoning/seasoning/common/cipher/CryptoConverter.java b/src/main/java/today/seasoning/seasoning/common/cipher/CryptoConverter.java
new file mode 100644
index 0000000..f28347a
--- /dev/null
+++ b/src/main/java/today/seasoning/seasoning/common/cipher/CryptoConverter.java
@@ -0,0 +1,22 @@
+package today.seasoning.seasoning.common.cipher;
+
+import javax.persistence.AttributeConverter;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+
+@Component
+@RequiredArgsConstructor
+public class CryptoConverter implements AttributeConverter<String, String> {
+
+    private final CipherUtil cipherUtil;
+
+    @Override
+    public String convertToDatabaseColumn(String attribute) {
+        return cipherUtil.encode(attribute);
+    }
+
+    @Override
+    public String convertToEntityAttribute(String dbData) {
+        return cipherUtil.decode(dbData);
+    }
+}