Crypto questions

base64

According to the title base64 Work out the answer

 Ciphertext ：Y3liZXJwZWFjZXtXZWxjb21lX3RvX25ld19Xb3JsZCF9

After decryption

 Plaintext ：cyberpeace{Welcome_to_new_World!}

caesar（ Caesar ）

According to the requirements of the title, the title is Caesar decryption

Copy for Caesar decryption
I thought I didn't know how many people to move, so I kept trying , Last in 12 Is the result

cyberpeace{you_have_learned_caesar_encryption}

morse（ Moss ）

First, I got this question and thought it was binary
And I can't figure it out After searching the English word, I knew it was Morse
Then there is hold 1 See as - hold 0 See as .

The answer appears

Idempotent encryption

Idempotent encryption is interpreted as

From Baidu
So we can put this question one by one 0 Divide into eight parts （ The title says eight letters ）

So the answer comes out

railfence（ fence ）

According to the title, it is found that 5 fence
But this is not the result

I was confused and went online to find the answer
Found the fence and W Type existing
The secret is 159246837 The fence is 3
The clear text is ：

Knowledge is up One at a time w The answer comes out

not only morse

First of all, according to the morse Solve the first layer

MAY_BE_HAVE_ANOTHER_DECODEHHHHAAAAABAABBBAABBAAAAAAAABAABABAAAAAAABBABAAABBAAABBAABAAAABABAABAAABBABAAABAAABAABABBAABBBABAAABABABBAAABBABAAABAABAABAAAABBABBAABBAABAABAAABAABAABAABABAABBABAAAABBABAABBA

The front is translated into English “ There may be another decoding ”
So I looked for （ At this time, I put HHHH Also includes ） I couldn't find it
Finally, it was found that the bacon code （ Because this time let me remember the characteristics of bacon code ）
The final answer

attackanddefenceworldisinteresting