Encryption and decryption with asymmetric keys is computationally expensive. This is how encrypt works, in order to allow each piece of data in a data frame to be decrypted without compromise of the whole data frame. This works on the presumption that each cell contains less than 245 bytes of data.

encrypt_file(.path, crypt_file_name = NULL,
  public_key_path = "id_rsa.pub")

Arguments

.path

Quoted path to file to encrypt.

crypt_file_name

Optional new name to give encrypted file. Must end with ".encrypter.bin".

public_key_path

Quoted path to public key, created with genkeys.

Value

The encrypted file is saved.

Details

File encryption requires a different approach as files are often larger in size. This function encrypts a file using a a symmetric "session" key and the AES-256 cipher. This key is itself then encrypted using a public key generated using genkeys. In OpenSSL this combination is referred to as an envelope.

Examples

# This will run: # Create example file to encrypt # write.csv(gp, "gp.csv") # genkeys() # encrypt_file("gp.csv") # For CRAN and testing:
# NOT RUN { # Run only once in decrypt_file example temp_dir = tempdir() # temp directory for testing only genkeys(file.path(temp_dir, "id_rsa")) write.csv(gp, file.path(temp_dir, "gp.csv")) encrypt_file(file.path(temp_dir, "gp.csv"), public_key_path = file.path(temp_dir, "id_rsa.pub")) # }