golang加密密码块/ AES密钥本身

Question

I'm using an AES key of type cipher.Block generated by using crypto/aes package with below func:

aesBlock, err := aes.NewCipher(randKey)

I'm using this to encrypt a particular set of data but afterward I want to encrypt aesBlock itself with a Public Key, so that I can store and later decrypt with the asymmetric Private Key. However, I'm having a tough time finding the best way to encrypt aesBlock. Obviously this needs to be reversible so that I can use it to decrypt the previously mentioned data.

The func EncryptOAEP from crypto/aes seems like a good fit, as it takes a *PublicKey, however the msg parameter is of type []byte and my AES key is of type cipher.Block. Not sure a direct conversion is possible or even a good idea.

Any ideas?

Answer 1

As Adrian pointed out in the comments, the solution is simpler than I thought. All you need to do is encrypt and store the randKey. Regenerating the aesBlock with decrypted randKey produces the same results.