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12 个助记词安全吗?
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Topic: 12 个助记词安全吗? (Read 349 times)
HoferBit
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12 个助记词安全吗?
June 30, 2023, 09:20:17 AM
Last edit: July 03, 2023, 02:14:54 AM by HoferBit
#1
遵循 BIP39 标准的助记词通常是 12 个或者 24 个。
软件钱包 MetaMask 默认生成的助记词是 12 个,
硬件钱包 OneKey 默认生成的助记词是 12 个,
硬件钱包 Ledger 默认生成的助记词是 24个,
硬件钱包 Trezor Model T 默认生成的助记词是 12 个,
硬件钱包 Trezor Model One 默认生成的助记词是 24个。
问题来了,如果选择 12 个助记词,够安全吗?本帖试图回答一下这个问题。
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Re: 12个助记词安全吗?
June 30, 2023, 09:26:28 AM
#2
首先从常识来判断,既然有很多厂商默认提供了 12 个助记词的选项,说明12 个助记词肯定是经过现实考验的,安全的,此贴完结~~~
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Re: 12个助记词安全吗?
June 30, 2023, 09:28:11 AM
#3
其次,我们问一下 chatGPT,获取一些基本常识
问题:
你好,存储比特币时,有 12 个助记词和 24 个助记词,他们的区别是什么?12个助记词足够安全吗?
GPT4:
助记词(Mnemonic Phrase)是一种将复杂的二进制信息转化为人类可以记忆的词汇的方法,这种方法在加密货币中经常被用来生成和恢复私钥。这种助记词的生成算法遵循了 BIP39(Bitcoin Improvement Proposals 39)的规定。这种规定定义了一种由 2048 个词组成的词库,私钥可以通过从这个词库中选取 12 到 24 个词来生成。
12 个助记词和 24 个助记词的主要区别是他们所能提供的安全级别。12 个助记词可以提供 128 位的安全级别,而 24 个助记词可以提供 256 位的安全级别。所谓的“位数”指的是要通过暴力破解来找出正确的密码,需要尝试的次数的对数值(以 2 为底)。因此,256 位的安全级别远高于 128 位。然而,这并不是说 12 个助记词的安全性就是低的,实际上,128 位的安全级别已经足够高,使得在实际操作中,即使使用最强大的计算机设备也不可能在短时间内破解。
在决定使用 12 个助记词还是 24 个助记词时,你需要权衡安全性和便利性。24 个助记词提供了更高的安全性,但记忆和管理这么多的词语可能会比较困难。而 12 个助记词虽然安全性稍微低一些,但更便于记忆和管理。
无论选择哪种助记词,都应注意安全地存储它们,因为任何人只要获得了你的助记词,就能恢复你的私钥,从而控制你的比特币。
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Re: 12个助记词安全吗?
June 30, 2023, 09:39:10 AM
Last edit: June 30, 2023, 10:02:18 AM by HoferBit
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#4
在讨论 12 个助记词(128bit)的安全性前,我们先来讨论一下 24 个助记词(256bit)的安全性。
关于 256bit 有多安全?
坐拥 5.27M 订阅者 YouTube 科普账号 3Blue1Brown 在视频 How secure is 256 bit security?
https://youtu.be/S9JGmA5_unY
中,给出了教科书般的回答:非常的安全。
ps:3Blue1Brown 用 8 个 40亿相乘得到 256bit,此处的第一个40亿,是单台电脑的极限,类似的人类记忆极限,是邓巴数。邓巴数也称150定律,指能与某个人维持紧密人际关系的人数上限,通常人们认为是150。
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Re: 12个助记词安全吗?
July 02, 2023, 06:29:25 AM
#5
我认为12个助记词是安全的, 因为如果黑客想要透过任何软件去猜测12个助记词来登录别人的比特币钱包, 12个助记词的组合可是拥有上千亿的组合, 基本上是不可能利用任何软件来得到正确的12个助记词组合。
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Re: 12个助记词安全吗?
July 03, 2023, 02:14:08 AM
#6
录了一个视频来讨论 12 个助记词的安全性,制作差,表达差,慎点
https://youtu.be/bpgTw7KM_RU
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Re: 12个助记词安全吗?
July 10, 2023, 08:24:21 AM
#7
Quote from: HoferBit on July 03, 2023, 02:14:08 AM
录了一个视频来讨论 12 个助记词的安全性,制作差,表达差,慎点
https://youtu.be/bpgTw7KM_RU
视频做的不错, 对刚学习加密货币的新手会带来帮助, 你老婆在视频里很专心听你解释, 很幸福的一对夫妻, 给你个赞
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Re: 12个助记词安全吗?
July 11, 2023, 03:51:15 AM
#8
Quote from: Barcode_ on July 10, 2023, 08:24:21 AM
Quote from: HoferBit on July 03, 2023, 02:14:08 AM
录了一个视频来讨论 12 个助记词的安全性,制作差,表达差,慎点
https://youtu.be/bpgTw7KM_RU
视频做的不错, 对刚学习加密货币的新手会带来帮助, 你老婆在视频里很专心听你解释, 很幸福的一对夫妻, 给你个赞
谢谢你的赞,谢谢我老婆的耐心,哈哈。
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Re: 12 个助记词安全吗?
January 06, 2024, 01:59:39 PM
#9
可以认为是安全的,毕竟现在比特币网络的哈希率才到2的68次方,离2的128次方还早着呢。除非随机数生成有问题,或者量子计算机出现,或者你运气坏到不能再坏了,或者被黑客攻击,可以认为是安全的。
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