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crypto.erl
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crypto.erl
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%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1999-2023. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
%% Purpose : Main Crypto API module.
-module(crypto).
-export([start/0, stop/0, info/0, info_lib/0, info_fips/0, supports/0, enable_fips_mode/1,
version/0, bytes_to_integer/1]).
-export([cipher_info/1, hash_info/1]).
-export([hash/2, hash_xof/3, hash_init/1, hash_update/2, hash_final/1, hash_final_xof/2]).
-export([sign/4, sign/5, verify/5, verify/6]).
-export([generate_key/2, generate_key/3, compute_key/4]).
-export([exor/2, strong_rand_bytes/1, mod_pow/3]).
-export([rand_seed/0, rand_seed_alg/1, rand_seed_alg/2]).
-export([rand_seed_s/0, rand_seed_alg_s/1, rand_seed_alg_s/2]).
-export([rand_plugin_next/1]).
-export([rand_plugin_aes_next/1, rand_plugin_aes_jump/1]).
-export([rand_plugin_uniform/1]).
-export([rand_plugin_uniform/2]).
-export([rand_cache_plugin_next/1]).
-export([rand_uniform/2]).
-export([public_encrypt/4, private_decrypt/4]).
-export([private_encrypt/4, public_decrypt/4]).
-export([privkey_to_pubkey/2]).
-export([ec_curve/1, ec_curves/0]).
-export([rand_seed/1]).
-export([format_error/2]).
-export([pbkdf2_hmac/5]).
%%%----------------------------------------------------------------
%% Deprecated functions
-deprecated([crypto_dyn_iv_init/3,
crypto_dyn_iv_update/3
]).
%%%----------------------------------------------------------------
%% Removed functions.
%%
%% Old interface. Now implemented with the New interface.
%% Removed in OTP-24.0 See OTP-16232 (deprecation) and OTP-16656 (removal)
-removed([{next_iv, '_', "see the 'New and Old API' chapter of the CRYPTO User's guide"},
{hmac, 3, "use crypto:mac/4 instead"},
{hmac, 4, "use crypto:macN/5 instead"},
{hmac_init, 2, "use crypto:mac_init/3 instead"},
{hmac_update, 2, "use crypto:mac_update/2 instead"},
{hmac_final, 1, "use crypto:mac_final/1 instead"},
{hmac_final_n, 2, "use crypto:mac_finalN/2 instead"},
{cmac, 3, "use crypto:mac/4 instead"},
{cmac, 4, "use crypto:macN/5 instead"},
{poly1305, 2, "use crypto:mac/3 instead"},
{stream_init, '_', "use crypto:crypto_init/3 + crypto:crypto_update/2 + "
"crypto:crypto_final/1 or crypto:crypto_one_time/4 instead"},
{stream_encrypt, 2, "use crypto:crypto_update/2 instead"},
{stream_decrypt, 2, "use crypto:crypto_update/2 instead"},
{block_encrypt, 3, "use crypto:crypto_one_time/4 or crypto:crypto_init/3 + "
"crypto:crypto_update/2 + crypto:crypto_final/1 instead"},
{block_encrypt, 4, "use crypto:crypto_one_time/5, crypto:crypto_one_time_aead/6,7 "
"or crypto:crypto_(dyn_iv)?_init + "
"crypto:crypto_(dyn_iv)?_update + crypto:crypto_final instead"},
{block_decrypt, 3, "use crypto:crypto_one_time/4 or crypto:crypto_init/3 + "
"crypto:crypto_update/2 + crypto:crypto_final/1 instead"},
{block_decrypt, 4, "use crypto:crypto_one_time/5, crypto:crypto_one_time_aead/6,7 "
"or crypto:crypto_(dyn_iv)?_init + "
"crypto:crypto_(dyn_iv)?_update + crypto:crypto_final instead"}
]).
-removed_type([{retired_cbc_cipher_aliases, 0, "Use aes_*_cbc or des_ede3_cbc"},
{retired_cfb_cipher_aliases, 0, "Use aes_*_cfb8, aes_*_cfb128 or des_ede3_cfb"},
{retired_ctr_cipher_aliases, 0, "Use aes_*_ctr"},
{retired_ecb_cipher_aliases, 0, "Use aes_*_ecb"},
{stream_state, 0, "see the 'New and Old API' chapter of the CRYPTO User's guide"},
{hmac_state, 0, "see the 'New and Old API' chapter of the CRYPTO User's guide"}
]).
%%%----------------------------------------------------------------
%% New interface
-export([crypto_init/4, crypto_init/3,
crypto_update/2,
crypto_one_time/4, crypto_one_time/5,
crypto_one_time_aead/6, crypto_one_time_aead/7,
crypto_dyn_iv_init/3,
crypto_dyn_iv_update/3,
crypto_final/1,
crypto_get_data/1,
hash_equals/2,
supports/1,
mac/3, mac/4, macN/4, macN/5,
mac_init/2, mac_init/3, mac_update/2, mac_final/1, mac_finalN/2
]).
%%%----------------------------------------------------------------
%% Engine
-export([
engine_get_all_methods/0,
engine_load/3,
engine_load/4,
engine_unload/1,
engine_unload/2,
engine_by_id/1,
engine_list/0,
engine_ctrl_cmd_string/3,
engine_ctrl_cmd_string/4,
engine_add/1,
engine_remove/1,
engine_register/2,
engine_unregister/2,
engine_get_id/1,
engine_get_name/1,
ensure_engine_loaded/2,
ensure_engine_loaded/3,
ensure_engine_unloaded/1,
ensure_engine_unloaded/2
]).
-nifs([info_nif/0, info_lib/0, info_fips/0, enable_fips_mode_nif/1,
hash_algorithms/0, pubkey_algorithms/0, cipher_algorithms/0,
mac_algorithms/0, curve_algorithms/0, rsa_opts_algorithms/0,
hash_info/1, hash_nif/2, hash_init_nif/1, hash_update_nif/2,
hash_final_nif/1, hash_final_xof_nif/2, mac_nif/4, mac_init_nif/3, mac_update_nif/2,
mac_final_nif/1, cipher_info_nif/1, ng_crypto_init_nif/4,
ng_crypto_update_nif/2, ng_crypto_update_nif/3, ng_crypto_final_nif/1,
ng_crypto_get_data_nif/1, ng_crypto_one_time_nif/5,
strong_rand_bytes_nif/1, strong_rand_range_nif/1, rand_uniform_nif/2,
mod_exp_nif/4, do_exor/2, hash_equals_nif/2, pbkdf2_hmac_nif/5,
pkey_sign_nif/5, pkey_verify_nif/6, pkey_crypt_nif/6,
rsa_generate_key_nif/2, dh_generate_key_nif/4, dh_compute_key_nif/3,
evp_compute_key_nif/3, evp_generate_key_nif/2, privkey_to_pubkey_nif/2,
srp_value_B_nif/5, srp_user_secret_nif/7, srp_host_secret_nif/5,
ec_generate_key_nif/2, ecdh_compute_key_nif/3, rand_seed_nif/1,
aead_cipher_nif/7, engine_by_id_nif/1, engine_init_nif/1,
engine_free_nif/1, engine_load_dynamic_nif/0,
engine_ctrl_cmd_strings_nif/3, engine_register_nif/2,
engine_unregister_nif/2, engine_add_nif/1, engine_remove_nif/1,
engine_get_first_nif/0, engine_get_next_nif/1, engine_get_id_nif/1,
engine_get_name_nif/1, engine_get_all_methods_nif/0,
ensure_engine_loaded_nif/2
]).
-export_type([ %% A minimum exported: only what public_key needs.
dh_private/0,
dh_public/0,
dss_digest_type/0,
ec_named_curve/0,
ecdsa_digest_type/0,
pk_encrypt_decrypt_opts/0,
pk_sign_verify_opts/0,
rsa_digest_type/0,
sha1/0,
sha2/0
]).
-export_type([engine_ref/0,
key_id/0,
password/0
]).
%%% Opaque types must be exported :(
-export_type([
hash_state/0,
crypto_state/0,
mac_state/0
]).
%% Private. For tests.
-export([packed_openssl_version/4, engine_methods_convert_to_bitmask/2,
get_test_engine/0]).
-export([rand_plugin_aes_jump_2pow20/1]).
-deprecated({rand_uniform, 2, "use rand:uniform/1 instead"}).
%% This should correspond to the similar macro in crypto.c
-define(MAX_BYTES_TO_NIF, 20000). %% Current value is: erlang:system_info(context_reductions) * 10
%% Used by strong_rand_float/0
-define(HALF_DBL_EPSILON, 1.1102230246251565e-16). % math:pow(2, -53)
%%% ===== BEGIN NEW TYPING ====
%%% Basic
-type key_integer() :: integer() | binary(). % Always binary() when used as return value
%%% Keys
-type rsa_public() :: [key_integer()] . % [E, N]
-type rsa_private() :: [key_integer()] . % [E, N, D] | [E, N, D, P1, P2, E1, E2, C]
-type rsa_params() :: {ModulusSizeInBits::integer(), PublicExponent::key_integer()} .
-type dss_public() :: [key_integer()] . % [P, Q, G, Y]
-type dss_private() :: [key_integer()] . % [P, Q, G, X]
-type ecdsa_public() :: key_integer() .
-type ecdsa_private() :: key_integer() .
-type ecdsa_params() :: ec_named_curve() | ec_explicit_curve() .
-type eddsa_public() :: key_integer() .
-type eddsa_private() :: key_integer() .
-type eddsa_params() :: edwards_curve_ed() .
-type srp_public() :: key_integer() .
-type srp_private() :: key_integer() .
-type srp_gen_params() :: {user,srp_user_gen_params()} | {host,srp_host_gen_params()}.
-type srp_comp_params() :: {user,srp_user_comp_params()} | {host,srp_host_comp_params()}.
-type srp_user_gen_params() :: list(binary() | atom() | list()) .
-type srp_host_gen_params() :: list(binary() | atom() | list()) .
-type srp_user_comp_params() :: list(binary() | atom()) .
-type srp_host_comp_params() :: list(binary() | atom()) .
-type dh_public() :: key_integer() .
-type dh_private() :: key_integer() .
-type dh_params() :: [key_integer()] . % [P, G] | [P, G, PrivateKeyBitLength]
-type ecdh_public() :: key_integer() .
-type ecdh_private() :: key_integer() .
-type ecdh_params() :: ec_named_curve() | edwards_curve_dh() | ec_explicit_curve() .
%%% Curves
-type ec_explicit_curve() :: {Field :: ec_field(),
Curve :: ec_curve(),
BasePoint :: binary(),
Order :: binary(),
CoFactor :: none | % FIXME: Really?
binary()
} .
-type ec_curve() :: {A :: binary(),
B :: binary(),
Seed :: none | binary()
} .
-type ec_field() :: ec_prime_field() | ec_characteristic_two_field() .
-type ec_prime_field() :: {prime_field, Prime :: integer()} .
-type ec_characteristic_two_field() :: {characteristic_two_field, M :: integer(), Basis :: ec_basis()} .
-type ec_basis() :: {tpbasis, K :: non_neg_integer()}
| {ppbasis, K1 :: non_neg_integer(), K2 :: non_neg_integer(), K3 :: non_neg_integer()}
| onbasis .
-type ec_named_curve() :: brainpoolP160r1
| brainpoolP160t1
| brainpoolP192r1
| brainpoolP192t1
| brainpoolP224r1
| brainpoolP224t1
| brainpoolP256r1
| brainpoolP256t1
| brainpoolP320r1
| brainpoolP320t1
| brainpoolP384r1
| brainpoolP384t1
| brainpoolP512r1
| brainpoolP512t1
| c2pnb163v1
| c2pnb163v2
| c2pnb163v3
| c2pnb176v1
| c2pnb208w1
| c2pnb272w1
| c2pnb304w1
| c2pnb368w1
| c2tnb191v1
| c2tnb191v2
| c2tnb191v3
| c2tnb239v1
| c2tnb239v2
| c2tnb239v3
| c2tnb359v1
| c2tnb431r1
| ipsec3
| ipsec4
| prime192v1
| prime192v2
| prime192v3
| prime239v1
| prime239v2
| prime239v3
| prime256v1
| secp112r1
| secp112r2
| secp128r1
| secp128r2
| secp160k1
| secp160r1
| secp160r2
| secp192k1
| secp192r1
| secp224k1
| secp224r1
| secp256k1
| secp256r1
| secp384r1
| secp521r1
| sect113r1
| sect113r2
| sect131r1
| sect131r2
| sect163k1
| sect163r1
| sect163r2
| sect193r1
| sect193r2
| sect233k1
| sect233r1
| sect239k1
| sect283k1
| sect283r1
| sect409k1
| sect409r1
| sect571k1
| sect571r1
| wtls1
| wtls10
| wtls11
| wtls12
| wtls3
| wtls4
| wtls5
| wtls6
| wtls7
| wtls8
| wtls9
.
-type edwards_curve_dh() :: x25519 | x448 .
-type edwards_curve_ed() :: ed25519 | ed448 .
%%%----------------------------------------------------------------
%%% New cipher schema
%%%
-type cipher() :: cipher_no_iv()
| cipher_iv()
| cipher_aead() .
-type cipher_no_iv() :: aes_128_ecb
| aes_192_ecb
| aes_256_ecb
| aes_ecb
| blowfish_ecb
| des_ecb
| rc4 .
-type cipher_iv() :: aes_128_cbc
| aes_192_cbc
| aes_256_cbc
| aes_cbc
| aes_128_ofb
| aes_192_ofb
| aes_256_ofb
| aes_128_cfb128
| aes_192_cfb128
| aes_256_cfb128
| aes_cfb128
| aes_128_cfb8
| aes_192_cfb8
| aes_256_cfb8
| aes_cfb8
| aes_128_ctr
| aes_192_ctr
| aes_256_ctr
| aes_ctr
| blowfish_cbc
| blowfish_cfb64
| blowfish_ofb64
| chacha20
| des_ede3_cbc
| des_ede3_cfb
| des_cbc
| des_cfb
| rc2_cbc .
-type cipher_aead() :: aes_128_ccm
| aes_192_ccm
| aes_256_ccm
| aes_ccm
| aes_128_gcm
| aes_192_gcm
| aes_256_gcm
| aes_gcm
| chacha20_poly1305 .
%%%----------------------------------------------------------------
-type rsa_digest_type() :: sha1() | sha2() | md5 | ripemd160 .
-type dss_digest_type() :: sha1() | sha2() .
-type ecdsa_digest_type() :: sha1() | sha2() .
-type sha1() :: sha .
-type sha2() :: sha224 | sha256 | sha384 | sha512 .
-type sha3() :: sha3_224 | sha3_256 | sha3_384 | sha3_512 .
-type sha3_xof() :: shake128 | shake256 .
-type blake2() :: blake2b | blake2s .
-type compatibility_only_hash() :: md5 | md4 .
-type crypto_integer() :: binary() | integer().
%% %%%--------------------------------------------------------------------
%% %%% Exceptions
%% %%%
%% %% Exceptions
%% %% error:badarg
%% %% error:notsup
%% -type run_time_error() :: badarg | notsup.
%% %% Exceptions
%% %% error:{badarg, file_line_info, Reason::term()}
%% %% error:{notsup,Reason::term()}
%% %% error:{error,Reason::term()}
%% -type descriptive_error() :: {badarg | notsup | error, FileLineInfo::any, Reason::string()}.
%%--------------------------------------------------------------------
%% Compilation and loading
%%--------------------------------------------------------------------
-compile(no_native).
-on_load(on_load/0).
-define(CRYPTO_NIF_VSN,302).
%%--------------------------------------------------------------------
%% When generating documentation from crypto.erl, the macro ?CRYPTO_VSN is not defined.
%% That causes the doc generation to stop...
-ifndef(CRYPTO_VSN).
-define(CRYPTO_VSN, "??").
-endif.
%%--------------------------------------------------------------------
%% Call a nif and handle an error exceptions to fit into the error handling
%% in the Erlang shell.
%% If not called from a shell, an error exception will be propagated.
-define(nif_call(Call), ?nif_call(Call, undefined, {})).
-define(nif_call(Call, ArgMap), ?nif_call(Call, undefined, ArgMap)).
-define(nif_call(Call, Args0, ArgMap),
try Call
catch
error
: {Id, #{c_file_name := C_file,
c_file_line_num := C_line,
c_function_arg_num := ArgNum}, Msg}
: Stack when is_list(C_file),
is_integer(C_line),
is_integer(ArgNum) ->
error({Id, {C_file,C_line}, Msg},
err_find_args(Args0, Stack),
[{error_info, #{erl_function_arg_num => err_remap_C_argnum(ArgNum, ArgMap)}}]
)
end).
%%--------------------------------------------------------------------
%% Error if the crypto nifs not are loaded
-define(nif_stub,nif_stub_error(?LINE)).
nif_stub_error(Line) ->
erlang:nif_error({nif_not_loaded,module,?MODULE,line,Line}).
%%--------------------------------------------------------------------
%%% API
%%--------------------------------------------------------------------
version() ->
?CRYPTO_VSN.
format_error({Ex, {C_file,C_line}, Msg}, [{_M,_F,_Args,Opts} | _CallStack]) when Ex == badarg ;
Ex == notsup ->
case proplists:get_value(error_info, Opts) of
#{erl_function_arg_num := ErlArgNum} ->
FileMsg =
io_lib:format("(Found in the internal file ~s at line ~p)", [C_file, C_line]),
case ErlArgNum of
undefined ->
#{general => [Msg," ",FileMsg]};
N ->#{N => Msg,
general => FileMsg
}
end
end.
-spec start() -> ok | {error, Reason::term()}.
start() ->
application:start(crypto).
-spec stop() -> ok | {error, Reason::term()}.
stop() ->
application:stop(crypto).
-spec supports() -> [Support]
when Support :: {hashs, Hashs}
| {ciphers, Ciphers}
| {public_keys, PKs}
| {macs, Macs}
| {curves, Curves}
| {rsa_opts, RSAopts},
Hashs :: [sha1() | sha2() | sha3() | sha3_xof() | blake2() | ripemd160 | compatibility_only_hash()],
Ciphers :: [cipher()],
PKs :: [rsa | dss | ecdsa | dh | ecdh | eddh | ec_gf2m],
Macs :: [hmac | cmac | poly1305],
Curves :: [ec_named_curve() | edwards_curve_dh() | edwards_curve_ed()],
RSAopts :: [rsa_sign_verify_opt() | rsa_opt()] .
supports() ->
[{hashs, supports(hashs)},
{ciphers, supports(ciphers)}
| [{T,supports(T)} || T <- [public_keys,
macs,
curves,
rsa_opts]
]
].
-spec supports(Type) -> Support
when Type :: hashs
| ciphers
| public_keys
| macs
| curves
| rsa_opts,
Support :: Hashs
| Ciphers
| PKs
| Macs
| Curves
| RSAopts,
Hashs :: [sha1() | sha2() | sha3() | sha3_xof() | blake2() | ripemd160 | compatibility_only_hash()],
Ciphers :: [cipher()],
PKs :: [rsa | dss | ecdsa | dh | ecdh | eddh | ec_gf2m],
Macs :: [hmac | cmac | poly1305],
Curves :: [ec_named_curve() | edwards_curve_dh() | edwards_curve_ed()],
RSAopts :: [rsa_sign_verify_opt() | rsa_opt()] .
-define(CURVES, '$curves$').
supports(hashs) -> hash_algorithms();
supports(public_keys) -> pubkey_algorithms();
supports(ciphers) -> add_cipher_aliases(cipher_algorithms());
supports(macs) -> mac_algorithms();
supports(curves) -> curve_algorithms();
supports(rsa_opts) -> rsa_opts_algorithms().
-spec info_lib() -> [{Name,VerNum,VerStr}] when Name :: binary(),
VerNum :: integer(),
VerStr :: binary() .
info_lib() -> ?nif_stub.
-spec info() -> #{compile_type := normal | debug | valgrind | asan,
cryptolib_version_compiled => string() | undefined,
cryptolib_version_linked := string(),
link_type := dynamic | static,
otp_crypto_version := string()
}.
info() ->
(info_nif())#{otp_crypto_version => crypto:version()}.
info_nif() -> ?nif_stub.
-spec info_fips() -> not_supported | not_enabled | enabled.
info_fips() -> ?nif_stub.
-spec enable_fips_mode(Enable) -> Result when Enable :: boolean(),
Result :: boolean().
enable_fips_mode(Enable) ->
enable_fips_mode_nif(Enable).
enable_fips_mode_nif(_) -> ?nif_stub.
-spec pbkdf2_hmac(Digest, Pass, Salt, Iter, KeyLen) -> Result
when Digest :: sha | sha224 | sha256 | sha384 | sha512,
Pass :: binary(),
Salt :: binary(),
Iter :: pos_integer(),
KeyLen :: pos_integer(),
Result :: binary().
pbkdf2_hmac(Digest, Pass, Salt, Iter, KeyLen) ->
?nif_call(pbkdf2_hmac_nif(Digest, Pass, Salt, Iter, KeyLen)).
pbkdf2_hmac_nif(_, _, _, _, _) -> ?nif_stub.
%%%================================================================
%%%
%%% Hashing
%%%
%%%================================================================
-type hash_algorithm() :: sha1() | sha2() | sha3() | sha3_xof() | blake2() | ripemd160 | compatibility_only_hash() .
-type hash_xof_algorithm() :: sha3_xof() .
-spec hash_info(Type) -> Result
when Type :: hash_algorithm(),
Result :: #{size := integer(),
block_size := integer(),
type := integer()
} .
hash_info(Type) ->
hash_info_nif(Type).
-spec hash(Type, Data) -> Digest when Type :: hash_algorithm(),
Data :: iodata(),
Digest :: binary().
hash(Type, Data) ->
Data1 = iolist_to_binary(Data),
MaxBytes = max_bytes(),
hash(Type, Data1, erlang:byte_size(Data1), MaxBytes).
-spec hash_xof(Type, Data, Length) -> Digest when Type :: hash_xof_algorithm(),
Data :: iodata(),
Length :: non_neg_integer(),
Digest :: binary().
hash_xof(Type, Data, Length) ->
Data1 = iolist_to_binary(Data),
hash_xof(Type, Data1, erlang:byte_size(Data1), Length).
-opaque hash_state() :: reference().
-spec hash_init(Type) -> State when Type :: hash_algorithm(),
State :: hash_state().
hash_init(Type) ->
?nif_call(hash_init_nif(Type)).
-spec hash_update(State, Data) -> NewState when State :: hash_state(),
NewState :: hash_state(),
Data :: iodata() .
hash_update(Context, Data) ->
Data1 = iolist_to_binary(Data),
MaxBytes = max_bytes(),
hash_update(Context, Data1, erlang:byte_size(Data1), MaxBytes).
-spec hash_final(State) -> Digest when State :: hash_state(),
Digest :: binary().
hash_final(Context) ->
?nif_call(hash_final_nif(Context)).
-spec hash_final_xof(State, Length) -> Digest when State :: hash_state(),
Length :: non_neg_integer(),
Digest :: binary().
hash_final_xof(Context, Length) ->
hash_final_xof_nif(Context, Length).
%%%================================================================
%%%
%%% MACs (Message Authentication Codes)
%%%
%%%================================================================
-type hmac_hash_algorithm() :: sha1() | sha2() | sha3() | compatibility_only_hash().
-type cmac_cipher_algorithm() :: aes_128_cbc | aes_192_cbc | aes_256_cbc | aes_cbc
| blowfish_cbc
| des_cbc | des_ede3_cbc
| rc2_cbc
.
%%%----------------------------------------------------------------
%%% Calculate MAC for the whole text at once
-spec mac(Type :: poly1305, Key, Data) -> Mac
when Key :: iodata(),
Data :: iodata(),
Mac :: binary().
mac(poly1305, Key, Data) -> mac(poly1305, undefined, Key, Data).
-spec mac(Type, SubType, Key, Data) -> Mac
when Type :: hmac | cmac | poly1305,
SubType :: hmac_hash_algorithm() | cmac_cipher_algorithm() | undefined,
Key :: iodata(),
Data :: iodata(),
Mac :: binary().
mac(Type, SubType, Key0, Data) ->
Key = iolist_to_binary(Key0),
?nif_call(mac_nif(Type, alias(SubType,Key), Key, Data)).
-spec macN(Type :: poly1305, Key, Data, MacLength) -> Mac
when Key :: iodata(),
Data :: iodata(),
Mac :: binary(),
MacLength :: pos_integer().
macN(Type, Key, Data, MacLength) ->
macN(Type, undefined, Key, Data, MacLength).
-spec macN(Type, SubType, Key, Data, MacLength) -> Mac
when Type :: hmac | cmac | poly1305,
SubType :: hmac_hash_algorithm() | cmac_cipher_algorithm() | undefined,
Key :: iodata(),
Data :: iodata(),
Mac :: binary(),
MacLength :: pos_integer().
macN(Type, SubType, Key, Data, MacLength) ->
erlang:binary_part(mac(Type,SubType,Key,Data), 0, MacLength).
%%%----------------------------------------------------------------
%%% Calculate the MAC by uppdating by pieces of the text
-opaque mac_state() :: reference() .
-spec mac_init(Type :: poly1305, Key) -> State
when Key :: iodata(),
State :: mac_state() .
mac_init(poly1305, Key) ->
?nif_call(mac_init_nif(poly1305, undefined, Key)).
-spec mac_init(Type, SubType, Key) -> State
when Type :: hmac | cmac | poly1305,
SubType :: hmac_hash_algorithm() | cmac_cipher_algorithm() | undefined,
Key :: iodata(),
State :: mac_state() .
mac_init(Type, SubType, Key0) ->
Key = iolist_to_binary(Key0),
?nif_call(mac_init_nif(Type, alias(SubType,Key), Key)).
-spec mac_update(State0, Data) -> State
when Data :: iodata(),
State0 :: mac_state(),
State :: mac_state().
mac_update(Ref, Data) ->
?nif_call(mac_update_nif(Ref, Data)).
-spec mac_final(State) -> Mac
when State :: mac_state(),
Mac :: binary().
mac_final(Ref) ->
?nif_call(mac_final_nif(Ref)).
-spec mac_finalN(State, MacLength) -> Mac
when State :: mac_state(),
MacLength :: pos_integer(),
Mac :: binary().
mac_finalN(Ref, MacLength) ->
erlang:binary_part(mac_final(Ref), 0, MacLength).
%%%----------------------------------------------------------------
%%% NIFs for the functions above
mac_nif(_Type, _SubType, _Key, _Data) -> ?nif_stub.
mac_init_nif(_Type, _SubType, _Key) -> ?nif_stub.
mac_update_nif(_Ref, _Data) -> ?nif_stub.
mac_final_nif(_Ref) -> ?nif_stub.
%%%================================================================
%%%
%%% The "Old API", kept for compatibility
%%%
%%%================================================================
%%%----------------------------------------------------------------
%%% Ciphers
%%%---- Cipher info
-spec cipher_info(Type) -> Result
when Type :: cipher(),
Result :: #{key_length := integer(),
iv_length := integer(),
block_size := integer(),
mode := CipherModes,
type := undefined | integer(),
prop_aead := boolean()
},
CipherModes :: undefined
| cbc_mode
| ccm_mode
| cfb_mode
| ctr_mode
| ecb_mode
| gcm_mode
| ige_mode
| ocb_mode
| ofb_mode
| wrap_mode
| xts_mode
.
cipher_info(Type) ->
try cipher_info_nif(Type)
catch
%% These ciphers are not available via the EVP interface on older cryptolibs.
error:notsup when Type == aes_128_ctr ->
#{block_size => 1,iv_length => 16,key_length => 16,mode => ctr_mode,type => undefined};
error:notsup when Type == aes_192_ctr ->
#{block_size => 1,iv_length => 16,key_length => 24,mode => ctr_mode,type => undefined};
error:notsup when Type == aes_256_ctr ->
#{block_size => 1,iv_length => 16,key_length => 32,mode => ctr_mode,type => undefined};
error:badarg ->
%% Maybe an alias: we don't know the key length..
case alias1(Type, 16) of
Type ->
%% Not found, propagate
error(badarg);
NewType ->
cipher_info(NewType)
end
end.
%%%================================================================
%%%
%%% Encrypt/decrypt, The "New API"
%%%
%%%================================================================
-opaque crypto_state() :: reference() .
-type crypto_opts() :: boolean()
| [ crypto_opt() ] .
-type crypto_opt() :: {encrypt,boolean()}
| {padding, padding()} .
-type padding() :: cryptolib_padding() | otp_padding().
-type cryptolib_padding() :: none | pkcs_padding .
-type otp_padding() :: zero | random .
%%%----------------------------------------------------------------
%%%
%%% Create and initialize a new state for encryption or decryption
%%%
-spec crypto_init(Cipher, Key, FlagOrOptions) -> State
when Cipher :: cipher_no_iv(),
Key :: iodata(),
FlagOrOptions :: crypto_opts() | boolean(),
State :: crypto_state() .
crypto_init(Cipher, Key, FlagOrOptions) ->
?nif_call(ng_crypto_init_nif(alias(Cipher,Key), Key, <<>>, FlagOrOptions),
{1,2,-1,3}
).
-spec crypto_init(Cipher, Key, IV, FlagOrOptions) -> State
when Cipher :: cipher_iv(),
Key :: iodata(),
IV :: iodata(),
FlagOrOptions :: crypto_opts(),
State :: crypto_state() .
crypto_init(Cipher, Key, IV, FlagOrOptions) ->
?nif_call(ng_crypto_init_nif(alias(Cipher,Key), Key, IV, FlagOrOptions)).
%%%----------------------------------------------------------------
-spec crypto_dyn_iv_init(Cipher, Key, FlagOrOptions) -> State
when Cipher :: cipher_iv(),
Key :: iodata(),
FlagOrOptions :: crypto_opts() | boolean(),
State :: crypto_state() .
crypto_dyn_iv_init(Cipher, Key, FlagOrOptions) ->
%% The IV is supposed to be supplied by calling crypto_update/3
?nif_call(ng_crypto_init_nif(alias(Cipher,Key), Key, undefined, FlagOrOptions),
[Cipher, Key, FlagOrOptions],
{1,2,-1,3}
).
%%%----------------------------------------------------------------
%%%
%%% Encrypt/decrypt a sequence of bytes. The sum of the sizes
%%% of all blocks must be an integer multiple of the crypto's
%%% blocksize.
%%%
-spec crypto_update(State, Data) -> Result
when State :: crypto_state(),
Data :: iodata(),
Result :: binary() .
crypto_update(State, Data) ->
?nif_call(ng_crypto_update_nif(State, Data)).
%%%----------------------------------------------------------------
-spec crypto_dyn_iv_update(State, Data, IV) -> Result
when State :: crypto_state(),
Data :: iodata(),
IV :: iodata(),
Result :: binary() .
crypto_dyn_iv_update(State, Data, IV) ->
?nif_call(ng_crypto_update_nif(State, Data, IV)).
%%%----------------------------------------------------------------
%%%
%%% Finalize encrypt/decrypt bytes. If the size of the bytes in
%%% to crypto_uptate was not an integer number of blocks, the rest
%%% is returned from this function.
-spec crypto_final(State) -> FinalResult
when State :: crypto_state(),
FinalResult :: binary() .
crypto_final(State) ->
?nif_call(ng_crypto_final_nif(State)).
%%%----------------------------------------------------------------
%%%
%%% Get result of padding etc
-spec crypto_get_data(State) -> Result
when State :: crypto_state(),
Result :: map() .
crypto_get_data(State) ->
?nif_call(ng_crypto_get_data_nif(State)).
%%%----------------------------------------------------------------
%%%
%%% Encrypt/decrypt one set bytes.
%%% The size must be an integer multiple of the crypto's blocksize.
%%%
-spec crypto_one_time(Cipher, Key, Data, FlagOrOptions) ->
Result
when Cipher :: cipher_no_iv(),
Key :: iodata(),
Data :: iodata(),
FlagOrOptions :: crypto_opts() | boolean(),
Result :: binary() .
crypto_one_time(Cipher, Key, Data, FlagOrOptions) ->
?nif_call(ng_crypto_one_time_nif(alias(Cipher,Key), Key, <<>>, Data, FlagOrOptions),
[Cipher, Key, Data, FlagOrOptions],
{1,2,-1,3,4}
).
-spec crypto_one_time(Cipher, Key, IV, Data, FlagOrOptions) ->
Result
when Cipher :: cipher_iv(),
Key :: iodata(),
IV :: iodata(),
Data :: iodata(),
FlagOrOptions :: crypto_opts() | boolean(),
Result :: binary() .
crypto_one_time(Cipher, Key, IV, Data, FlagOrOptions) ->
?nif_call(ng_crypto_one_time_nif(alias(Cipher,Key), Key, IV, Data, FlagOrOptions),
[Cipher, Key, IV, Data, FlagOrOptions],
{}).
%%%----------------------------------------------------------------
-spec crypto_one_time_aead(Cipher, Key, IV, InText, AAD, EncFlag::true) ->
Result
when Cipher :: cipher_aead(),
Key :: iodata(),
IV :: iodata(),
InText :: iodata(),
AAD :: iodata(),
Result :: EncryptResult,
EncryptResult :: {OutCryptoText, OutTag},
OutCryptoText :: binary(),
OutTag :: binary().
crypto_one_time_aead(Cipher, Key, IV, PlainText, AAD, true) ->
?nif_call(aead_cipher_nif(alias(Cipher,Key), Key, IV, PlainText, AAD, aead_tag_len(Cipher), true),
{1,2,3,4,5,-1,6}