1, unable to identify similarity: the encrypted text cannot be parsed into readable content, so the duplicate checking software may not identify the similarity between this text and other texts.

2. It is considered plagiarism: If the encrypted text is similar to other texts, it may be considered plagiarism or plagiarism, because the duplicate checking software cannot compare the contents of the texts.

3. Privacy protection: Encrypted text may contain confidential information, so privacy needs to be protected. When duplicate checking, it is necessary to ensure that the confidential information of the text will not be leaked.