Let's see what the encryption method is. can it be decrypted?

The ciphertext is like this: V53: eJwzcDJAASYWRhaGLsYGLqamTpZGji4GJuYGlpbGbm4mhhbmxi6OAPBkCik. the plaintext corresponds to the 11-digit mobile phone number. you can confirm this. Therefore, I would like to ask? The ciphertext is like this: V53: eJwzcDJAASYWRhaGLsYGLqamTpZGji4GJuYGlpbGbm4mhhbmxi6OAPBkCik =
The plaintext corresponds to the 11-digit mobile phone number, which can be determined;
So I would like to ask you what encryption method is used?

Reply content:

The ciphertext is like this: V53: eJwzcDJAASYWRhaGLsYGLqamTpZGji4GJuYGlpbGbm4mhhbmxi6OAPBkCik =
The plaintext corresponds to the 11-digit mobile phone number, which can be determined;
So I would like to ask you what encryption method is used?

I can tell you that this is the encoded binary data (: Later)
It is really hard to see what is encrypted

You certainly cannot decrypt this. from the result, it should have been encrypted by base64. However, after several layers of encryption and the salt used for encryption, you do not know how to decrypt it...

Basically, it cannot be decrypted...