make
make test

vsencrypt [-h] [-v] [-q] [-f] [-D] -e|-d [-a cipher] -i infile [-o outfile] [-p password]

DESCRIPTION
Use very strong cipher to encrypt/decrypt file.

The following options are available:

-h Help.

-v Show version.

-q Quiet. No error output.

-f Force override output file if already exist.

-D Delete input file if encrypt/decrypt success.

-e Encryption.

-d Decryption.

-c Encryption cipher, used in encryption mode(-e) only.

    Available ciphers:

    chacha20         256bit, faster than AES 256.
    salsa20          256bit, faster than AES 256.
    aes256           AES 256bit in CTR mode.
    aes256_chacha20  aes256 then chacha20 (default cipher).
    aes256_salsa20   aes256 then salsa20.
    chacha20_aes256  chacha20 then aes256.
    salsa20_aes256   salsa20 then aes256.

-i <infile> Input file for encrypt/decrypt.

-o <infile> Output file for encrypt/decrypt.

-p Password.

EXAMPLES
Encryption:
vsencrypt -e -i foo.jpg -o foo.jpg.vse -p secret123
vsencrypt -e -i foo.jpg      # will output as foo.jpg.vse and ask password

Decryption:
vsencrypt -d -i foo.jpg.vse -d foo.jpg -p secret123
vsencrypt -d -i foo.jpg.vse  # will output as foo.jpg and ask password

+++++++++++++++++++++++++++++++++++++++++++++++++++++
| version | header | encrypted data...              |
+++++++++++++++++++++++++++++++++++++++++++++++++++++

++++++++++++++++++++++++++++++++++++++++++++++++++++++
| cipher(1) |  salt(16)  |   iv(16)   |    mac(16)   |
++++++++++++++++++++++++++++++++++++++++++++++++++++++

export C_INCLUDE_PATH=`pwd`/src:`pwd`/src/argon2/include:`pwd`/src/argon2/src/blake2