如何在 Linux 上的 C++ 中计算 SHA-512 哈希？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/5125041/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to calculate a SHA-512 hash in C++ on Linux?
提问by Nathan Osman
Is there a standard library or commonly used library that can be used for calculating SHA-512 hashes on Linux?
是否有标准库或常用库可用于在 Linux 上计算 SHA-512 哈希？
I'm looking for a C or C++ library.
我正在寻找 C 或 C++ 库。
采纳答案by Zimbabao
Have you checked OpenSSL. I myself have not used it but documentation says it supports it.
您是否检查过OpenSSL。我自己没有使用过它，但文档说它支持它。
Here is list of few more implementations.
Example code
示例代码
md = EVP_get_digestbyname("sha512");
EVP_MD_CTX_init(&mdctx);
EVP_DigestInit_ex(&mdctx, md, NULL);
EVP_DigestUpdate(&mdctx, mess1, strlen(mess1));
EVP_DigestUpdate(&mdctx, mess2, strlen(mess2));
EVP_DigestFinal_ex(&mdctx, md_value, &md_len);
EVP_MD_CTX_cleanup(&mdctx);
回答by Zimbabao
I have had great success with this:
我在这方面取得了巨大的成功：
BSD license. It covers SHA-1, SHA-224, SHA-256, SHA-384, and SHA-512. It has neat helper functions reduce steps for simple cases:
BSD 许可证。它涵盖 SHA-1、SHA-224、SHA-256、SHA-384 和 SHA-512。它具有简洁的辅助函数，可以减少简单情况下的步骤：
SHA256_Data(const sha2_byte* data, size_t len, char digest[SHA256_DIGEST_STRING_LENGTH])
It also has a lot of performance tuning options.
它还具有许多性能调优选项。
回答by Tamás Szelei
I'm using Botanfor various cryptographic purposes. It has many kinds of SHA(-512) algorithms.
我将Botan用于各种加密目的。它有多种 SHA(-512) 算法。
When I was looking at C++ crypto libraries I also found Crypto++. The style of the Botan API was more straightforward for me, but both of these libraries are solid and mature.
当我查看 C++ 加密库时，我还发现了Crypto++。Botan API 的风格对我来说更直接，但是这两个库都是可靠和成熟的。
回答by polfosol ?_?
Check this code. It is fully portable and does not need any additional configurations. Only STL would suffice. You'll just need to declare
检查此代码。它是完全便携的，不需要任何额外的配置。只有 STL 就足够了。你只需要声明
#include "sha512.hh"
and then use the functions
然后使用函数
sw::sha512::calculate("SHA512 of std::string") // hash of a string, or
sw::sha512::file(path) // hash of a file specified by its path, or
sw::sha512::calculate(&data, sizeof(data)) // hash of any block of data
whenever you need them. Their return value is std::string
每当您需要它们时。它们的返回值是std::string
