我在 C unix 中有一个客户端/服务器应用程序，我需要使用 RSA 之类的东西加密/解密数据（但不一定是 RSA）。是否有此类功能的库（和相应的文档）？
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您可以查看SSL/TLS C API。
于 2012-05-31T07:18:57.967 回答
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For a Client/Server Application, the best way to ensure security is by using TLS/SSL.
The latest version of TLS is TLS 1.2 (RFC 5246) and as WagnerVaz has rightly mentioned, the best opensource library available fro TLS is OpenSSL .OpenSSL not only provides the library for TLS/Crypto. But, it also provides you a tool for generating certificates & private keys (based on RSA/DSA etc) on various formats.
Though OpenSSL is the finest TLS Library available in the market, it is a little difficult to understand and use for a first timer. There is a very wonderful tutorial written by Eric Rescorla himself on using OpenSSL.
An Introduction to OpenSSL Programming (Part - I) / An Introduction to OpenSSL Programming (Part - II)
It would be best if you first try to get some idea as to what is SSL and then start writing code for the same.
Alternately, let's say you are interested only in assymetric encryption / decryption, still OpenSSL's Crypto Libraries can be used.
于 2012-05-31T08:07:57.687 回答