security - What are good and safe keylength for El-Gamal? -

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what keylength el-gamal?

this open-ended question , depends on platform want use, performance constraints, enemies et.c.

the outdated gnupg faq sums nicely on length of elgamal keys - notice gpg creates 2048 bit elgamal keys default.

[...] after all, if key large enough resist brute-force attack, eavesdropper merely switch other method obtaining plaintext data. examples of other methods include robbing home or office , mugging you. 1024 bits recommended key size. if genuinely need larger key size know , should consulting expert in data security.

xkcd #538 of relevance here. :-)


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