gmssl:tldr:ed5f2

The command "gmssl zuc -e -in ${filename} -out ${filename-zuc}" is using the "gmssl" command with the "zuc" algorithm to encrypt a file.

Here's what each part of the command means:

• "gmssl": This is the command-line tool for the OpenSSL cryptographic library. It provides various cryptographic operations.
• "zuc": Refers to the ZUC algorithm, which is a stream cipher algorithm widely used for encryption.
• "-e": Specifies that the operation is encryption. It tells the command to encrypt the input file.
• "-in ${filename}": Specifies the input file to be encrypted. "${filename}" is a placeholder for the actual file name you want to encrypt, and it should be replaced with the appropriate file name or path.
• "-out ${filename-zuc}": Specifies the output file name. "${filename-zuc}" is a placeholder for the output file name, which will be the input file name appended with "-zuc". Again, replace it with the desired output file name or path.

In summary, the command uses the ZUC algorithm to encrypt a file specified by "${filename}" and saves the encrypted output to a file named "${filename-zuc}".