title: File Encryption: windows and linux
author: amandaguglieri
draft: false
TableOfContents: true
tags:
- file encryption
- windows
- linux
File Encryption
Windows
Invoke-AESEncryption.ps1 PowerShell script
Invoke-AESEncryption.ps1 PowerShell script
After the script has been transferred, it only needs to be imported as a module, as shown below.
This command creates an encrypted file with the same name as the encrypted file but with the extension ".aes."
Cheat sheet for encrypting and decrypting files:
############
# ENCRYPTION
############
# Encrypts the string "Secret Test" and outputs a Base64 encoded ciphertext
Invoke-AESEncryption -Mode Encrypt -Key "p@ssw0rd" -Text "Secret Text"
# Encrypts the file "file.bin" and outputs an encrypted file "file.bin.aes"
Invoke-AESEncryption -Mode Encrypt -Key "p@ssw0rd" -Path file.bin
# Decrypts the file "file.bin" and outputs an encrypted file "file.bin.aes"
Invoke-AESEncryption -Mode Encrypt -Key "p@ssw0rd" -Path file.bin.aes
############
# DECRYPTION
############
# Decrypts the Base64 encoded string "LtxcRelxrDLrDB9rBD6JrfX/czKjZ2CUJkrg++kAMfs=" and outputs plain text.
Invoke-AESEncryption -Mode Decrypt -Key "p@ssw0rd" -Text "LtxcRelxrDLrDB9rBD6JrfX/czKjZ2CUJkrg++kAMfs="
Linux
# Encrypt a file
openssl enc -aes-256-cbc -iter 100000 -pbkdf2 -in sourceFile.txt -out outputFile.txt.enc
# -iter 100000: Optional. Override the default iterations counts with this option.
# -pbkdf2: Optional. Use the Password-Based Key Derivation Function 2 algorithm.
# Decrypt a file
openssl enc -d -aes-256-cbc -iter 100000 -pbkdf2 -in encryptedFile.enc -out outputFile.txt
# Generate private key
openssl genrsa -aes256 -out private.pem 2048
# Generate public key
openssl rsa -in private.pem -outform PEM -pubout -out public.pem
# Encrypt a file with public key
openssl rsautl -encrypt -inkey public.pem -pubin -in file.txt -out file.enc
# -pubin: Specify the entry parameter
# Decrypt a dile with private key
openssl rsautl -decrypt -inkey private.pem -in file.enc -out file.txt