哈希值有多大? [英] How large can a hash value be?

问题描述

我和我办公室的一位程序员进行了讨论.您可以散列多少数据是否有任何限制?哈希算法有很多不同，但是我们使用SHA-1和SHA-2
我可以哈希(理论上)100 GB的值吗?还是1 PB?

I ran into a discussion with one of the programmers at my office. Is there any limitations for how much data you can hash? There''s a lot of different algorithms for hashing, but we use SHA-1 and SHA-2
Can I hash (in theory) a value of 100 gigabyte? or 1 petabyte?

推荐答案

再进行一次谷歌搜索，我找到了答案.

最大输入大小=(2 ^length − 1)位.例如，SHA-1的最大输入大小=(2 ⁶⁴ − 1).
SHA-384和SHA-512的最大输入大小为(2 ¹²⁸ -1)

参考: http://en.wikipedia.org/wiki/Comparison_of_cryptographic_hash_functions [

A little more googling and I found the answer.

The maximum input size = (2^length − 1) bits. For example, the maximum input size of SHA-1 = (2⁶⁴ − 1).
SHA-384 and SHA-512 has a maximum input size of (2¹²⁸ - 1)

ref: http://en.wikipedia.org/wiki/Comparison_of_cryptographic_hash_functions[^]

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