Erlang返回空二进制文件进行AES加密

Posted 2021-04-30

Erlang/OTP 22 [erts-10.6.4] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] [hipe] [dtrace]

Eshell V10.6.4  (abort with ^G)

1> application:ensure_all_started(crypto).
{ok,[crypto]}

2> Key = <<1:128>>.
<<0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1>>

3> Text = <<"hello crypto">>.
<<"hello crypto">>

4> crypto:crypto_one_time(aes_128_ecb, Key, Text, true).
<<>>

5> Ref = crypto:crypto_init(aes_128_ecb, Key, true).
#Ref<0.3726173343.1880227841.208986>

6> crypto:crypto_update(Ref, Text).
<<>>

我不知道我在做什么错，但是正如您在上面看到的那样，当我尝试加密某些内容时，crypto_one_time和crypto_update都返回一个空二进制。

答案

尝试使用crypto:crypto_one_time/5：

1> Key = <<1:128>>. 
<<0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1>> 
2> IV = <<0:128>>. 
<<0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0>> 
3> Txt = [<<"First bytes">>,<<"Second bytes">>]. 
[<<"First bytes">>,<<"Second bytes">>] 
4> crypto:crypto_one_time(aes_128_ctr, Key, IV, Txt, true)
<<67,44,216,166,25,130,203,5,66,6,162,16,79,94,115,234, 197,94,253,16,144,151,41>>