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JSON Object Signing and Encryption (JOSE) for Erlang and Elixir.

Security advisory: This version has known vulnerabilities. View advisories
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jose src jose_chacha20_poly1305_crypto.erl
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src/jose_chacha20_poly1305_crypto.erl 

%% -*- mode: erlang; tab-width: 4; indent-tabs-mode: 1; st-rulers: [70] -*-

%% vim: ts=4 sw=4 ft=erlang noet

%%%-------------------------------------------------------------------

%%% @author Andrew Bennett <andrew@pixid.com>

%%% @copyright 2014-2016, Andrew Bennett

%%% @doc

%%%

%%% @end

%%% Created :  08 Aug 2016 by Andrew Bennett <andrew@pixid.com>

%%%-------------------------------------------------------------------

-module(jose_chacha20_poly1305_crypto).



-behaviour(jose_chacha20_poly1305).



%% jose_chacha20_poly1305 callbacks

-export([decrypt/5]).

-export([encrypt/4]).

-export([authenticate/3]).

-export([verify/4]).



%%====================================================================

%% jose_chacha20_poly1305 callbacks

%%====================================================================



decrypt(CipherText, CipherTag, AAD, IV, CEK) ->

	crypto:block_decrypt(chacha20_poly1305, CEK, IV, {AAD, CipherText, CipherTag}).



encrypt(PlainText, AAD, IV, CEK) ->

	crypto:block_encrypt(chacha20_poly1305, CEK, IV, {AAD, PlainText}).



authenticate(Message, Key, Nonce) ->

	jose_jwa_chacha20_poly1305:authenticate(Message, Key, Nonce).



verify(MAC, Message, Key, Nonce) ->

	jose_jwa_chacha20_poly1305:verify(MAC, Message, Key, Nonce).