什么是El-Gamal的安全密钥长度? [英] What are good and safe keylength for El-Gamal?

问题描述

什么是El-Gamal好的密钥长度?

What are good keylength for El-Gamal?

推荐答案

这确实是一个开放性问题，它取决于您要使用的平台，性能限制，谁是敌人等.

This is really an open-ended question and it depends on what platform you want to use, your performance constraints, who your enemies are et.c.

过时 GnuPG常见问题解答总结ElGamal密钥的长度很好-注意GPG当前默认创建 2048 位ElGamal密钥.

The outdated GnuPG faq sums this up nicely on length of ElGamal keys - notice that GPG currently creates 2048 bit ElGamal keys by default.

[...] 毕竟，如果钥匙足够大 为了抵抗暴力攻击， 窃听者只会切换到 一些其他方法来获取您的 明文数据.其他的例子 方法包括抢劫您的房屋或 办公室和抢劫你. 1024位为 因此建议的密钥大小.如果你 真正需要更大的密钥大小，然后 您可能已经知道了这一点， 应该咨询数据专家 安全.

[...] After all, if the key is large enough to resist a brute-force attack, an eavesdropper will merely switch to some other method for obtaining your plaintext data. Examples of other methods include robbing your home or office and mugging you. 1024 bits is thus the recommended key size. If you genuinely need a larger key size then you probably already know this and should be consulting an expert in data security.

xkcd#538 在这里也很重要. :-)

xkcd #538 is also of relevance here. :-)

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