암복호화 function 개발

- 암호화모듈서비스(CryptoModuleService)를 호출하여 암복호화 수행하는 function

src/main/java/com/eactive/eai/custom/transformer/function/DJBErpDecryt.java

@@ -0,0 +1,52 @@
+package com.eactive.eai.custom.transformer.function;
+
+import java.nio.charset.StandardCharsets;
+import java.util.Base64;
+import java.util.HashMap;
+import java.util.Stack;
+
+import org.nfunk.jep.ParseException;
+import org.nfunk.jep.function.PostfixMathCommand;
+
+import com.eactive.eai.common.security.CryptoModuleService;
+
+/**
+ * JEP 트랜스포머 함수 — DJB ERP 연동 복호화.
+ *
+ * 사용법: DJBErpDecryt(encBase64, moduleName) DJBErpDecryt(encBase64, moduleName,
+ * groupSeq)
+ *
+ * 파라미터: encBase64 : Base64 인코딩된 암호문 (String) moduleName : DB에 등록된 암호화 모듈명
+ * (String) groupSeq : 키 도출용 그룹 시퀀스 (String, 선택). 미전달 시 빈 context로 호출.
+ *
+ * 반환값: 복호화된 평문 (String)
+ */
+public class DJBErpDecryt extends PostfixMathCommand {
+
+	public DJBErpDecryt() {
+		numberOfParameters = -1;
+	}
+
+	@Override
+	@SuppressWarnings({ "rawtypes", "unchecked" })
+	public void run(Stack inStack) throws ParseException {
+		checkStack(inStack);
+
+		if (curNumberOfParameters != 2) {
+			throw new ParseException("DJBErpDecryt: 파라미터는 2개개여야 합니다 (encBase64, moduleName");
+		}
+
+		String moduleName = inStack.pop().toString();
+		String encBase64 = inStack.pop().toString();
+
+		try {
+			byte[] cipherBytes = Base64.getDecoder().decode(encBase64.trim());
+			byte[] plainBytes = CryptoModuleService.getInstance().decrypt(moduleName, new HashMap<>(), null, cipherBytes);
+			inStack.push(new String(plainBytes, StandardCharsets.UTF_8));
+		} catch (ParseException e) {
+			throw e;
+		} catch (Exception e) {
+			throw new ParseException("DJBErpDecryt 복호화 실패: " + e.getMessage());
+		}
+	}
+}

src/main/java/com/eactive/eai/custom/transformer/function/DJBErpEncryt.java

@@ -0,0 +1,52 @@
+package com.eactive.eai.custom.transformer.function;
+
+import java.nio.charset.StandardCharsets;
+import java.util.Base64;
+import java.util.HashMap;
+import java.util.Stack;
+
+import org.nfunk.jep.ParseException;
+import org.nfunk.jep.function.PostfixMathCommand;
+
+import com.eactive.eai.common.security.CryptoModuleService;
+
+/**
+ * JEP 트랜스포머 함수 — DJB ERP 연동 암호화.
+ *
+ * 사용법: DJBErpEncryt(plainText, moduleName) DJBErpEncryt(plainText, moduleName,
+ * groupSeq)
+ *
+ * 파라미터: plainText : 암호화할 평문 (String) moduleName : DB에 등록된 암호화 모듈명 (String)
+ * groupSeq : 키 도출용 그룹 시퀀스 (String, 선택). 미전달 시 빈 context로 호출.
+ *
+ * 반환값: Base64 인코딩된 암호문 (String)
+ */
+public class DJBErpEncryt extends PostfixMathCommand {
+
+	public DJBErpEncryt() {
+		numberOfParameters = -1;
+	}
+
+	@Override
+	@SuppressWarnings({ "rawtypes", "unchecked" })
+	public void run(Stack inStack) throws ParseException {
+		checkStack(inStack);
+
+		if (curNumberOfParameters != 2) {
+			throw new ParseException("DJBErpEncryt: 파라미터는 2개여야 합니다 (plainText, moduleName)");
+		}
+
+		String moduleName = inStack.pop().toString();
+		String plainText = inStack.pop().toString();
+
+		try {
+			byte[] cipherBytes = CryptoModuleService.getInstance().encrypt(moduleName, new HashMap<>(), null,
+					plainText.getBytes(StandardCharsets.UTF_8));
+			inStack.push(Base64.getEncoder().encodeToString(cipherBytes));
+		} catch (ParseException e) {
+			throw e;
+		} catch (Exception e) {
+			throw new ParseException("DJBErpEncryt 암호화 실패: " + e.getMessage());
+		}
+	}
+}