Is there any reversible algorithm with shorter ciphertext than plaintext?

Source: Internet
Author: User
Is there any reversible algorithm with shorter ciphertext than plaintext? Is there any reversible algorithm with shorter ciphertext than plaintext? It is best to share the password with no more than 32 characters regardless of the plaintext length to: more ------ does the solution have the reversible algorithm that is shorter than the plaintext value?
Is there any reversible algorithm with shorter ciphertext than plaintext?
It is recommended that no matter how long the plaintext is, the password should not exceed 32 characters

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------ Solution --------------------
For example
1 + 2 + 1 + 2 + 4 = 10
Root region 1 + 2 + 1 + 2 + 4. you can know that 10 is equivalent to encryption.
However, if you decrypt the last 10 digits, you cannot know that the result is calculated by the 1 + 2 + 1 + 2 + 4 operation, which may be 2 + 2 + 2 + 2 + 2

Therefore, we need to have a tag in the ciphertext.
In this case, the more plain text, the more standards, and the more ciphertext.

If it is irreversible, it is different. you do not need to obtain the original text. You do not need to recognize the original text.

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