This splits the code in 4 files:
- uencrypt.h
- uencrypt.c - main program
- uencrypt-openssl.c - OpenSSL/wolfSSL implementation
- uencrypt-mbedtls - mbedTLS implementation
Other changes, accounting for ~400 bytes increase in ipk size:
- more error condition checking and reporting,
- hide key and iv command line arguments
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
