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%% This Source Code Form is subject to the terms of the Mozilla Public
%% License, v. 2.0. If a copy of the MPL was not distributed with this
%% file, You can obtain one at https://mozilla.org/MPL/2.0/.
%%
%% Copyright (c) 2007-2020 VMware, Inc. or its affiliates. All rights reserved.
%%
-module(rabbit_pbe).
-export([supported_ciphers/0, supported_hashes/0, default_cipher/0, default_hash/0, default_iterations/0]).
-export([encrypt_term/5, decrypt_term/5]).
-export([encrypt/5, decrypt/5]).
-export_type([encryption_result/0]).
supported_ciphers() ->
credentials_obfuscation_pbe:supported_ciphers().
supported_hashes() ->
credentials_obfuscation_pbe:supported_hashes().
%% Default encryption parameters.
default_cipher() ->
credentials_obfuscation_pbe:default_cipher().
default_hash() ->
credentials_obfuscation_pbe:default_hash().
default_iterations() ->
credentials_obfuscation_pbe:default_iterations().
%% Encryption/decryption of arbitrary Erlang terms.
encrypt_term(Cipher, Hash, Iterations, PassPhrase, Term) ->
credentials_obfuscation_pbe:encrypt_term(Cipher, Hash, Iterations, PassPhrase, Term).
decrypt_term(_Cipher, _Hash, _Iterations, _PassPhrase, {plaintext, Term}) ->
Term;
decrypt_term(Cipher, Hash, Iterations, PassPhrase, {encrypted, _Base64Binary}=Encrypted) ->
credentials_obfuscation_pbe:decrypt_term(Cipher, Hash, Iterations, PassPhrase, Encrypted).
-type encryption_result() :: {'encrypted', binary()} | {'plaintext', binary()}.
-spec encrypt(crypto:block_cipher(), crypto:hash_algorithms(),
pos_integer(), iodata() | '$pending-secret', binary()) -> encryption_result().
encrypt(Cipher, Hash, Iterations, PassPhrase, ClearText) ->
credentials_obfuscation_pbe:encrypt(Cipher, Hash, Iterations, PassPhrase, ClearText).
-spec decrypt(crypto:block_cipher(), crypto:hash_algorithms(),
pos_integer(), iodata(), encryption_result()) -> any().
decrypt(_Cipher, _Hash, _Iterations, _PassPhrase, {plaintext, Term}) ->
Term;
decrypt(Cipher, Hash, Iterations, PassPhrase, {encrypted, _Base64Binary}=Encrypted) ->
credentials_obfuscation_pbe:decrypt(Cipher, Hash, Iterations, PassPhrase, Encrypted).
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