确保对 base64 编码的值应用单向哈希算法 - base64 是一种双向编码，因此您不希望窃听者反向从中设计您的私钥.Amazon S3 通过在执行 base64 之前执行 SHA-1 来做到这一点.

Make sure you apply a one-way hashing algorithm to the value to base64 encode - base64 is a two-way encoding, so you don't want eavesdroppers reverse engineering your private key from that. Amazon S3 does this with performing a SHA-1 before doing the base64.

与所有(AFAIK?)编译的二进制文件一样，您的应用不应该被反编译.

As with all (AFAIK?) compiled binaries, your app shouldn't be able to be decompiled.