问题
Which cryptography algorithm is the most secure that ships with .net?
回答1:
You cannot directly compare all types of cryptographic algorithms. That would be like comparing a sorting algorithm with a multiplication algorithm: they have different purposes. That being said, I would answer:
- Symmetric cipher: AES-256
- Asymmetric cipher: RSA with 4096 bit key (I believe that is the maximum in .NET) or ECDSA with 571 bit key (but that is only supported in .NET 3.5)
- Hash: SHA-512
- Message Authentication Code: HMAC with SHA-512
That being said, those are overkill for most applications, and you should do fine using AES-128, RSA with 2048 bit key, SHA-256 and HMAC with SHA-256.
回答2:
I'm somewhat partial to SHA-512. If 512 is a little excessive, the other members of the SHA-2 family might be helpful - SHA-256 and SHA-384 are both in the SHA-2 family. But AviewAnew's suggestion of AES 256 is good as well.
来源：https://stackoverflow.com/questions/258721/which-built-in-net-cryptography-algorithm-is-the-most-secure