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authorHans Nilsson <[email protected]>2019-03-21 12:41:35 +0100
committerHans Nilsson <[email protected]>2019-03-22 10:30:48 +0100
commit0facf888f853fd130033b8924a0b1520e4262a57 (patch)
treec42ebf6991314550a0f05f4bb47ddf1067d3e775 /lib
parent7ddbc128e6eabe662a15e37f85045284ad9f27c8 (diff)
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crypto: Use key length in alias/2
Diffstat (limited to 'lib')
-rw-r--r--lib/crypto/src/crypto.erl132
1 files changed, 88 insertions, 44 deletions
diff --git a/lib/crypto/src/crypto.erl b/lib/crypto/src/crypto.erl
index a5e60fbe75..fd13481951 100644
--- a/lib/crypto/src/crypto.erl
+++ b/lib/crypto/src/crypto.erl
@@ -562,8 +562,10 @@ poly1305(Key, Data) ->
%%%================================================================
-define(COMPAT(CALL),
- try CALL
+ try begin CALL end
catch
+ error:{error,_} ->
+ error(badarg);
error:{E,_Reason} when E==notsup ; E==badarg ->
error(E)
end).
@@ -617,33 +619,38 @@ cipher_info(Type) ->
{binary(), binary()} | run_time_error().
-block_encrypt(Type, Key, Ivec, Data) ->
- do_block_encrypt(alias(Type), Key, Ivec, Data).
-
-do_block_encrypt(Type, Key, Ivec, PlainText) when Type =:= aes_ige256 ->
+block_encrypt(aes_ige256, Key, Ivec, PlainText) ->
notsup_to_error(aes_ige_crypt_nif(Key, Ivec, PlainText, true));
-do_block_encrypt(Type, Key, Ivec, {AAD, PlainText}) when Type =:= chacha20_poly1305 ->
- aead_encrypt(Type, Key, Ivec, AAD, PlainText, 16);
-
-do_block_encrypt(Type, Key, Ivec, Data) when Type =:= aes_gcm;
- Type =:= aes_ccm ->
- case Data of
- {AAD, PlainText} ->
- aead_encrypt(Type, Key, Ivec, AAD, PlainText);
- {AAD, PlainText, TagLength} ->
- aead_encrypt(Type, Key, Ivec, AAD, PlainText, TagLength)
- end;
-
-do_block_encrypt(Type, Key, Ivec, PlainText) ->
- ?COMPAT(crypto_one_shot(Type, Key, Ivec, PlainText, true)).
-
+block_encrypt(Type, Key0, Ivec, Data) ->
+ Key = iolist_to_binary(Key0),
+ ?COMPAT(
+ case Data of
+ {AAD, PlainText} ->
+ aead_encrypt(alias(Type,Key), Key, Ivec, AAD, PlainText, aead_tag_len(Type));
+ {AAD, PlainText, TagLength} ->
+ aead_encrypt(alias(Type,Key), Key, Ivec, AAD, PlainText, TagLength);
+ PlainText ->
+ crypto_one_shot(alias(Type,Key), Key, Ivec, PlainText, true)
+ end).
-spec block_encrypt(Type::block_cipher_no_iv(), Key::key(), PlainText::iodata()) ->
binary() | run_time_error().
-block_encrypt(Type, Key, PlainText) ->
- ?COMPAT(crypto_one_shot(Type, Key, <<>>, PlainText, true)).
+block_encrypt(Type, Key0, PlainText) ->
+ Key = iolist_to_binary(Key0),
+ ?COMPAT(crypto_one_shot(alias(Type,Key), Key, <<>>, PlainText, true)).
+
+
+aead_tag_len(chacha20_poly1305) -> 16;
+aead_tag_len(aes_ccm) -> 12;
+aead_tag_len(aes_128_ccm) -> 12;
+aead_tag_len(aes_192_ccm) -> 12;
+aead_tag_len(aes_256_ccm) -> 12;
+aead_tag_len(aes_gcm) -> 16;
+aead_tag_len(aes_128_gcm) -> 16;
+aead_tag_len(aes_192_gcm) -> 16;
+aead_tag_len(aes_256_gcm) -> 16.
%%%----------------------------------------------------------------
%%%----------------------------------------------------------------
@@ -653,26 +660,26 @@ block_encrypt(Type, Key, PlainText) ->
{AAD::binary(), Data::iodata(), Tag::binary()}) ->
binary() | error | run_time_error() .
-block_decrypt(Type, Key, Ivec, Data) ->
- do_block_decrypt(alias(Type), Key, Ivec, Data).
-
-do_block_decrypt(aes_ige256, Key, Ivec, Data) ->
+block_decrypt(aes_ige256, Key, Ivec, Data) ->
notsup_to_error(aes_ige_crypt_nif(Key, Ivec, Data, false));
-do_block_decrypt(Type, Key, Ivec, {AAD, Data, Tag}) when Type =:= aes_gcm;
- Type =:= aes_ccm;
- Type =:= chacha20_poly1305 ->
- aead_decrypt(Type, Key, Ivec, AAD, Data, Tag);
-
-do_block_decrypt(Type, Key, Ivec, Data) ->
- ?COMPAT(crypto_one_shot(Type, Key, Ivec, Data, false)).
+block_decrypt(Type, Key0, Ivec, Data) ->
+ Key = iolist_to_binary(Key0),
+ ?COMPAT(
+ case Data of
+ {AAD, CryptoText, Tag} ->
+ aead_decrypt(alias(Type,Key), Key, Ivec, AAD, CryptoText, Tag);
+ CryptoText ->
+ crypto_one_shot(alias(Type,Key), Key, Ivec, CryptoText, false)
+ end).
-spec block_decrypt(Type::block_cipher_no_iv(), Key::key(), Data::iodata()) ->
binary() | run_time_error().
-block_decrypt(Type, Key, Data) ->
- ?COMPAT(crypto_one_shot(Type, Key, <<>>, Data, false)).
+block_decrypt(Type, Key0, CryptoText) ->
+ Key = iolist_to_binary(Key0),
+ ?COMPAT(crypto_one_shot(alias(Type,Key), Key, <<>>, CryptoText, false)).
%%%-------- Stream ciphers API
@@ -694,9 +701,10 @@ block_decrypt(Type, Key, Data) ->
Key :: iodata(),
IVec ::binary(),
State :: stream_state() .
-stream_init(Type, Key, IVec) when is_binary(IVec) ->
- Ref = ?COMPAT(ng_crypto_init_nif(alias(Type),
- iolist_to_binary(Key), iolist_to_binary(IVec),
+stream_init(Type, Key0, IVec) when is_binary(IVec) ->
+ Key = iolist_to_binary(Key0),
+ Ref = ?COMPAT(ng_crypto_init_nif(alias(Type,Key),
+ Key, iolist_to_binary(IVec),
undefined)
),
{Type, {Ref,flg_undefined}}.
@@ -706,9 +714,10 @@ stream_init(Type, Key, IVec) when is_binary(IVec) ->
when Type :: stream_cipher_no_iv(),
Key :: iodata(),
State :: stream_state() .
-stream_init(rc4 = Type, Key) ->
- Ref = ?COMPAT(ng_crypto_init_nif(alias(Type),
- iolist_to_binary(Key), <<>>,
+stream_init(rc4 = Type, Key0) ->
+ Key = iolist_to_binary(Key0),
+ Ref = ?COMPAT(ng_crypto_init_nif(alias(Type,Key),
+ Key, <<>>,
undefined)
),
{Type, {Ref,flg_undefined}}.
@@ -923,6 +932,44 @@ alias(aes_cbc256) -> aes_256_cbc;
alias(Alg) -> Alg.
+
+%%%---- des_ede3_cbc
+alias(des3_cbc, _) -> des_ede3_cbc;
+alias(des_ede3, _) -> des_ede3_cbc;
+%%%---- des_ede3_cfb
+alias(des_ede3_cbf,_ ) -> des_ede3_cfb;
+alias(des3_cbf, _) -> des_ede3_cfb;
+alias(des3_cfb, _) -> des_ede3_cfb;
+%%%---- aes_*_cbc
+alias(aes_cbc128, _) -> aes_128_cbc;
+alias(aes_cbc256, _) -> aes_256_cbc;
+
+alias(aes_cbc, Key) when size(Key)==128 -> aes_128_cbc;
+alias(aes_cbc, Key) when size(Key)==192 -> aes_192_cbc;
+alias(aes_cbc, Key) when size(Key)==256 -> aes_256_cbc;
+
+alias(aes_cfb8, Key) when size(Key)==128 -> aes_128_cfb8;
+alias(aes_cfb8, Key) when size(Key)==192 -> aes_192_cfb8;
+alias(aes_cfb8, Key) when size(Key)==256 -> aes_256_cfb8;
+
+alias(aes_cfb128, Key) when size(Key)==128 -> aes_128_cfb128;
+alias(aes_cfb128, Key) when size(Key)==192 -> aes_192_cfb128;
+alias(aes_cfb128, Key) when size(Key)==256 -> aes_256_cfb128;
+
+alias(aes_ctr, Key) when size(Key)==128 -> aes_128_ctr;
+alias(aes_ctr, Key) when size(Key)==192 -> aes_192_ctr;
+alias(aes_ctr, Key) when size(Key)==256 -> aes_256_ctr;
+
+alias(aes_gcm, Key) when size(Key)==128 -> aes_128_gcm;
+alias(aes_gcm, Key) when size(Key)==192 -> aes_192_gcm;
+alias(aes_gcm, Key) when size(Key)==256 -> aes_256_gcm;
+
+alias(aes_ccm, Key) when size(Key)==128 -> aes_128_ccm;
+alias(aes_ccm, Key) when size(Key)==192 -> aes_192_ccm;
+alias(aes_ccm, Key) when size(Key)==256 -> aes_256_ccm;
+
+alias(Alg, _) -> Alg.
+
%%%================================================================
%%%
%%% RAND - pseudo random numbers using RN_ and BN_ functions in crypto lib
@@ -2013,9 +2060,6 @@ cipher_info_nif(_Type) -> ?nif_stub.
%% AES - in Galois/Counter Mode (GCM)
%%
%% The default tag length is EVP_GCM_TLS_TAG_LEN(16),
-aead_encrypt(Type=aes_ccm, Key, Ivec, AAD, In) -> aead_encrypt(Type, Key, Ivec, AAD, In, 12);
-aead_encrypt(Type=aes_gcm, Key, Ivec, AAD, In) -> aead_encrypt(Type, Key, Ivec, AAD, In, 16).
-
aead_encrypt(_Type, _Key, _Ivec, _AAD, _In, _TagLength) -> ?nif_stub.
aead_decrypt(_Type, _Key, _Ivec, _AAD, _In, _Tag) -> ?nif_stub.