Crypta

Crypta is another data encryption tool that uses RSA-AES hybrid encryption to securely transfer your data.

Getting Started

Installation

Linux

Download

curl -LO https://github.com/Mirage20/crypta/releases/latest/download/crypta-linux-x64.tar.gz

Extract
```
tar -xzvf crypta-linux-x64.tar.gz
```
Install
```
 sudo mv ./crypta /usr/local/bin/crypta
```

MacOS

Download

curl -LO https://github.com/Mirage20/crypta/releases/latest/download/crypta-darwin-x64.tar.gz

Extract
```
tar -xzvf crypta-darwin-x64.tar.gz
```
Install
```
 sudo mv ./crypta /usr/local/bin/crypta
```

Usage

Generate a key pair using openssl

openssl genrsa -out private.key 2048
openssl rsa -pubout -in private.key -out public.key

# Testing your key pair with crypta. This should print 'Hello World' as the output
echo "Hello World" | crypta -key public.key | crypta -d -key private.key

If you don't want to use -key flag you can use CRYPTA_PRIVATE_KEY and CRYPTA_PUBLIC_KEY environment variables to set the path for keys. However priority is given to the -key flag if you specify both.

Encrypt using public key

# Encrypt message.txt using public key and save it as payload.bin
crypta -in message.txt -key public.key -out payload.bin

# Encrypt message.txt using public key and save it as base64 encoded payload.txt
crypta -in message.txt -key public.key -out payload.txt -base64

# Read data from stdin pipe and encrypt
echo "Hello World" | crypta -key public.key -out payload.bin

# Read data from stdin and encrypt (press Ctrl+D after entering a secret)
crypta -key public.key -out payload.bin

Decrypt using private key

# Decrypt payload.bin using private key and save it as message.txt
crypta -in payload.bin -key private.key -out message.txt -d

# Decrypt base64 encoded payload.txt using private key and save it as message.txt
crypta -in payload.txt -key private.key -out message.txt -d -base64

# Read data from stdin pipe and decrypt
cat payload.bin | crypta -key private.key -out message.txt -d

# Output decrypt data to stdout
crypta -in payload.bin -key private.key -d

Run crypta --help for more information

Usage of crypta:
  -base64
        Use base64 encoding to write output (encrypt mode), and base64 decoding to read input (decrypt mode)
  -d    Decrypt mode
  -in string
        Input file path. Uses standard input if not provided
  -key string
        Public key file path for encrypting or private key file path for decrypting
  -out string
        Output file path. Uses standard output if not provided
  -version
        output version information