[*] These functions have been modified to work with the Crypto.Key object, and not with a list of keys.

[+] Added wrapping functions: dap_enc_key_get_enc_sizey, dap_enc_key_get_dec_size, dap_enc_key_update, dap_enc_gen_key_public_size, dap_enc_gen_key_public, dap_enc_key_signature_delete.

[*] Changed the function of creating a new key and deleting a key, added to them the use of a new transfer acceptance mechanism, keys from / to python.