76 lines
1.5 KiB
Go
76 lines
1.5 KiB
Go
package private
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import (
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"context"
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"crypto/aes"
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"crypto/cipher"
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"crypto/rand"
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"encoding/base64"
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"io"
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"strings"
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"time"
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pb "bsm/full/module/base/cloud/pb"
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"git.apinb.com/bsm-sdk/core/errcode"
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"git.apinb.com/bsm-sdk/core/service"
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)
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// 加密数据
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func EncryptData(ctx context.Context, in *pb.DataRequest) (reply *pb.StatusReply, err error) {
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// parse authorization meta.
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_, err = service.ParseMetaCtx(ctx, nil)
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if err != nil {
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return nil, err
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}
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// validate request
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if strings.TrimSpace(in.Data) == "" {
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return nil, errcode.ErrInvalidArgument
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}
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if strings.TrimSpace(in.Key) == "" {
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return nil, errcode.ErrInvalidArgument
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}
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// logic code
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// 简单的AES加密实现
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key := []byte(in.Key)
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if len(key) != 32 {
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// 如果密钥长度不是32字节，进行填充或截断
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if len(key) < 32 {
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for len(key) < 32 {
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key = append(key, 0)
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}
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} else {
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key = key[:32]
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}
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}
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block, err := aes.NewCipher(key)
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if err != nil {
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return nil, errcode.ErrInternal
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}
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// 使用GCM模式进行加密
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gcm, err := cipher.NewGCM(block)
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if err != nil {
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return nil, errcode.ErrInternal
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}
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// 生成随机nonce
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nonce := make([]byte, gcm.NonceSize())
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if _, err := io.ReadFull(rand.Reader, nonce); err != nil {
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return nil, errcode.ErrInternal
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}
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// 加密数据
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ciphertext := gcm.Seal(nonce, nonce, []byte(in.Data), nil)
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// 返回base64编码的加密数据
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encryptedData := base64.StdEncoding.EncodeToString(ciphertext)
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return &pb.StatusReply{
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Details: encryptedData,
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Timeseq: time.Now().UnixMilli(),
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}, nil
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}
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