bcrypt的cost值测试耗时结果

package main

import (
	"log"
	"time"

	"golang.org/x/crypto/bcrypt"
)
func main() {
	password := "secret"
	for cost := 10; cost < 20; cost++ {
		start := time.Now()
		hashPwd(password, cost)
		log.Println("cost =", cost, " 耗时：", time.Since(start))
	}
}

// 加密
func hashPwd(password string, cost int) (string, error) {
	hash, err := bcrypt.GenerateFromPassword([]byte(password), cost)
	return string(hash), err
}

结果如下：

2023/04/18 16:55:22 cost = 10  耗时： 73.259042ms
2023/04/18 16:55:23 cost = 11  耗时： 144.186666ms
2023/04/18 16:55:23 cost = 12  耗时： 296.26375ms
2023/04/18 16:55:23 cost = 13  耗时： 609.700625ms
2023/04/18 16:55:25 cost = 14  耗时： 1.207150375s
2023/04/18 16:55:27 cost = 15  耗时： 2.39822525s
2023/04/18 16:55:32 cost = 16  耗时： 4.847635708s
2023/04/18 16:55:42 cost = 17  耗时： 9.725984375s
2023/04/18 16:56:01 cost = 18  耗时： 19.40903275s
2023/04/18 16:56:40 cost = 19  耗时： 38.541072833s