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argon2:tldr:04c95
This command uses the argon2
command-line utility to create a hash of the password using the Argon2 algorithm. Argon2 is a secure and memory-hard password hashing function designed to protect against common password attacks.
Here's a breakdown of the command:
-
echo "${password}"
: Theecho
command prints the value of the${password}
variable. It is used to pass the password as input to theargon2
command. -
|
: The pipe symbol|
is a special operator in the command-line interface that allows the output of one command to serve as input to another command. -
argon2 "${salt_text}" -e
: This is theargon2
command itself. It takes the password as input from the previousecho
command and generates a hash using the specified${salt_text}
as a salt. The-e
flag tellsargon2
to output the encoded hash value.
The resulting hash can be used to store and compare passwords securely, as it is a one-way function that is computationally expensive to reverse or brute-force. It incorporates both a user-specific password and a random salt, making it more resistant to dictionary and rainbow table attacks.