61 lines
1.7 KiB
Go
61 lines
1.7 KiB
Go
package libs
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import (
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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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"fmt"
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"io"
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"time"
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)
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// GenerateAESKey 生成AES密钥，基于时间戳和标志字符串
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func GenerateAESKey(startTime time.Time, endTime time.Time, flag string) ([]byte, error) {
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// 这里简单地将时间戳和标志字符串连接起来生成密钥，实际应用中应使用更安全的方式生成密钥
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keyMaterial := fmt.Sprintf("%d-%d-%s", startTime.Unix(), endTime.Unix(), flag)
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return []byte(keyMaterial)[:16], nil // AES-128需要16字节的密钥
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}
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// EncryptWithAES 使用AES加密数据
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func EncryptWithAES(data []byte, key []byte) ([]byte, error) {
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block, err := aes.NewCipher(key)
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if err != nil {
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return nil, err
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}
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ciphertext := make([]byte, aes.BlockSize+len(data))
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iv := ciphertext[:aes.BlockSize]
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if _, err := io.ReadFull(rand.Reader, iv); err != nil {
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return nil, err
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}
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stream := cipher.NewCFBEncrypter(block, iv)
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stream.XORKeyStream(ciphertext[aes.BlockSize:], data)
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return ciphertext, nil
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}
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func GenerateEncryptedJSONInfo(startTime time.Time, endTime time.Time, flag string, systemInfoBase64String string) (string, error) {
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// 解析Base64编码的系统信息字符串为字节切片
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decodedBytes, err := base64.StdEncoding.DecodeString(systemInfoBase64String)
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if err != nil {
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return "", err
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}
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// 生成AES密钥
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aesKey, err := GenerateAESKey(startTime, endTime, flag)
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if err != nil {
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return "", err
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}
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// 使用AES加密JSON数据
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encryptedBytes, err := EncryptWithAES(decodedBytes, aesKey)
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if err != nil {
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return "", err
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}
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// 对加密后的数据进行Base64编码以便于传输和存储
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encodedInfo := base64.StdEncoding.EncodeToString(encryptedBytes)
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return encodedInfo, nil
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}
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