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gmssl:tldr:abf90
gmssl: Decrypt a file using the SM4 cipher.
$ gmssl sms4 -d -in ${filename-sms4}
try on your machine
This command:
gmssl sms4 -d -in ${filename-sms4}
is used to decrypt a file with the SMS4 algorithm using the gmssl utility.
Here is the breakdown of the command:
gmssl
: It is the command-line interface for the gmssl library, which is a collection of cryptographic algorithms and protocols.sms4
: It specifies the SMS4 symmetric encryption algorithm, also known as the Chinese National Encryption Algorithm.-d
: It is an option that stands for "decrypt". This flag tells gmssl to perform the decryption operation.-in ${filename-sms4}
: It specifies the input file for the decryption operation.${filename-sms4}
is a placeholder for the actual filename. You need to replace it with the actual name of the file you want to decrypt.
Therefore, the command is meant to decrypt a file using the SMS4 algorithm with the gmssl utility.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.