refactor: reorganize modules and add Linux build tooling

module/base/cloud/internal/logic/private/decrypt_data.go

@@ -0,0 +1,81 @@
+package private
+
+import (
+	"context"
+	"crypto/aes"
+	"crypto/cipher"
+	"encoding/base64"
+	"strings"
+	"time"
+
+	pb "bsm/full/module/base/cloud/pb"
+	"git.apinb.com/bsm-sdk/core/errcode"
+	"git.apinb.com/bsm-sdk/core/service"
+)
+
+// 解密数据
+func DecryptData(ctx context.Context, in *pb.DataRequest) (reply *pb.StatusReply, err error) {
+	// parse authorization meta.
+	_, err = service.ParseMetaCtx(ctx, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	// validate request
+	if strings.TrimSpace(in.Data) == "" {
+		return nil, errcode.ErrInvalidArgument
+	}
+	if strings.TrimSpace(in.Key) == "" {
+		return nil, errcode.ErrInvalidArgument
+	}
+
+	// logic code
+	// 解码base64数据
+	ciphertext, err := base64.StdEncoding.DecodeString(in.Data)
+	if err != nil {
+		return nil, errcode.ErrInvalidArgument
+	}
+
+	key := []byte(in.Key)
+	if len(key) != 32 {
+		// 如果密钥长度不是32字节，进行填充或截断
+		if len(key) < 32 {
+			for len(key) < 32 {
+				key = append(key, 0)
+			}
+		} else {
+			key = key[:32]
+		}
+	}
+
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return nil, errcode.ErrInternal
+	}
+
+	// 使用GCM模式进行解密
+	gcm, err := cipher.NewGCM(block)
+	if err != nil {
+		return nil, errcode.ErrInternal
+	}
+
+	// 检查数据长度
+	if len(ciphertext) < gcm.NonceSize() {
+		return nil, errcode.ErrInvalidArgument
+	}
+
+	// 分离nonce和密文
+	nonce := ciphertext[:gcm.NonceSize()]
+	ciphertext = ciphertext[gcm.NonceSize():]
+
+	// 解密数据
+	plaintext, err := gcm.Open(nil, nonce, ciphertext, nil)
+	if err != nil {
+		return nil, errcode.ErrInvalidArgument
+	}
+
+	return &pb.StatusReply{
+		Details: string(plaintext),
+		Timeseq: time.Now().UnixMilli(),
+	}, nil
+}