版本封存
This commit is contained in:
169
cmii-uav-watchdog-common/totp_tier_one/crypto.go
Normal file
169
cmii-uav-watchdog-common/totp_tier_one/crypto.go
Normal file
@@ -0,0 +1,169 @@
|
||||
package totp_tier_one
|
||||
|
||||
import (
|
||||
"cmii-uav-watchdog-common/models"
|
||||
"cmii-uav-watchdog-common/wdd_log"
|
||||
"crypto/aes"
|
||||
"crypto/cipher"
|
||||
"crypto/sha256"
|
||||
"encoding/base64"
|
||||
"errors"
|
||||
"fmt"
|
||||
"strconv"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// Encrypt 加密字符串
|
||||
// 保证使用相同的plaintext和key进行加密,在不同时间、不同机器上输出的加密字符串都是固定的
|
||||
func Encrypt(plaintext string, key string) (encryptedPlaintext string, encryptError error) {
|
||||
// 创建hash
|
||||
hasher := sha256.New()
|
||||
hasher.Write([]byte(key))
|
||||
keyBytes := hasher.Sum(nil)
|
||||
|
||||
// 创建cipher
|
||||
block, err := aes.NewCipher(keyBytes)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
// 创建gcm
|
||||
gcm, err := cipher.NewGCM(block)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
// 生成确定性nonce - 使用plaintext和key的组合生成,确保对相同输入产生相同nonce
|
||||
nonceHasher := sha256.New()
|
||||
nonceHasher.Write([]byte(key + "fixed_salt_for_deterministic_result" + plaintext[:min(10, len(plaintext))]))
|
||||
nonceSource := nonceHasher.Sum(nil)
|
||||
|
||||
// 创建合适大小的nonce
|
||||
nonce := nonceSource[:gcm.NonceSize()]
|
||||
|
||||
// 加密
|
||||
ciphertext := gcm.Seal(nil, nonce, []byte(plaintext), nil)
|
||||
|
||||
// 将nonce和密文连接起来
|
||||
result := append(nonce, ciphertext...)
|
||||
|
||||
// 编码为base64
|
||||
return base64.StdEncoding.EncodeToString(result), nil
|
||||
}
|
||||
|
||||
// Decrypt 解密字符串
|
||||
// 可以使用加密字符串和key在不同时间、不同机器上解密出原始plaintext
|
||||
func Decrypt(encrypted string, key string) (decryptedPlaintext string, decryptError error) {
|
||||
// 解码base64
|
||||
data, err := base64.StdEncoding.DecodeString(encrypted)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
// 创建hash
|
||||
hasher := sha256.New()
|
||||
hasher.Write([]byte(key))
|
||||
keyBytes := hasher.Sum(nil)
|
||||
|
||||
// 创建cipher
|
||||
block, err := aes.NewCipher(keyBytes)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
// 创建gcm
|
||||
gcm, err := cipher.NewGCM(block)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
// 检查长度
|
||||
if len(data) < gcm.NonceSize() {
|
||||
return "", errors.New("密文太短")
|
||||
}
|
||||
|
||||
// 分离nonce和密文
|
||||
nonce, ciphertext := data[:gcm.NonceSize()], data[gcm.NonceSize():]
|
||||
|
||||
// 解密
|
||||
plaintext, err := gcm.Open(nil, nonce, ciphertext, nil)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
return string(plaintext), nil
|
||||
}
|
||||
|
||||
// min 返回两个整数中较小的一个
|
||||
func min(a, b int) int {
|
||||
if a < b {
|
||||
return a
|
||||
}
|
||||
return b
|
||||
}
|
||||
|
||||
// EncryptHostInfo 加密主机信息
|
||||
func EncryptHostInfo(hostInfo models.HostInfo, key string) (encryptedHostInfo string, encryptError error) {
|
||||
|
||||
// 生成主机唯一标识作为加密密钥
|
||||
info := generateHostUniqueID(hostInfo)
|
||||
|
||||
// 加密主机信息
|
||||
encrypted, err := Encrypt(info, key)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
return encrypted, nil
|
||||
}
|
||||
|
||||
// DecryptHostInfo 解密主机信息
|
||||
func DecryptHostInfo(encrypted string, hostInfo models.HostInfo, key string) (decryptedOK bool, decryptError error) {
|
||||
|
||||
// 解密主机信息
|
||||
decryptedStr, err := Decrypt(encrypted, key)
|
||||
if err != nil {
|
||||
wdd_log.Error("[DecryptHostInfo] - Decrypt失败: %v", err)
|
||||
return false, err
|
||||
}
|
||||
|
||||
// wdd_log.Info("[DecryptHostInfo] - Decrypt成功: %s", decryptedStr)
|
||||
|
||||
// 生成主机唯一标识作为加密密钥
|
||||
hostUniqueID := generateHostUniqueID(hostInfo)
|
||||
if hostUniqueID != decryptedStr {
|
||||
wdd_log.Error("[DecryptHostInfo] - 主机信息篡改")
|
||||
return false, errors.New("主机信息篡改")
|
||||
}
|
||||
|
||||
return true, nil
|
||||
}
|
||||
|
||||
// generateHostUniqueID 生成主机唯一标识作为加密密钥
|
||||
func generateHostUniqueID(hostInfo models.HostInfo) string {
|
||||
// hostinfo.SystemInfo.MachineID
|
||||
machineID := hostInfo.SystemInfo.MachineID
|
||||
|
||||
// hostinfo.SystemInfo.KernelVersion
|
||||
kernelVersion := hostInfo.SystemInfo.KernelVersion
|
||||
|
||||
// 将CPU信息中的ModelName Cores Hypervisor 拼接起来
|
||||
cpuCores := hostInfo.CPUInfo.Cores
|
||||
cpuHypervisor := hostInfo.CPUInfo.Hypervisor
|
||||
cpuModelName := hostInfo.CPUInfo.ModelName
|
||||
|
||||
cpuInfo := fmt.Sprintf("%s-%d-%s", cpuModelName, cpuCores, cpuHypervisor)
|
||||
|
||||
// 不能使用 mac 地址,因为 每个Pod 的 mac 地址会变化
|
||||
|
||||
// hostinfo.SystemInfo.MachineSerial
|
||||
machineSerial := hostInfo.SystemInfo.MachineSerial
|
||||
|
||||
// 将memory中的total 和 used 拼接起来
|
||||
memoryTotal := hostInfo.MemoryInfo.Total
|
||||
|
||||
// 将上述的全部信息拼接起来
|
||||
info := strings.Join([]string{machineID, kernelVersion, cpuInfo, machineSerial, strconv.FormatUint(memoryTotal, 10)}, "==")
|
||||
|
||||
return info
|
||||
}
|
||||
Reference in New Issue
Block a user