Encryption or password protection using Symmetric key

  1. Create a sample file
    echo “This is my secret message” > message.txt
  2. Encrypt a file
    openssl enc -aes-256-cbc -in message.txt -out message.txt.enc
  3. Decrypt a file
    openssl enc -aes-256-cbc -d -in message.txt.enc -pass pass:myPassword

Follow above commands on linux box to protect a text or a file with password.

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