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| author | Micael Karlberg <[email protected]> | 2013-11-26 15:13:06 +0100 |
|---|---|---|
| committer | Micael Karlberg <[email protected]> | 2013-11-26 15:13:06 +0100 |
| commit | 8852c947d413e8814d663c9319f7b8932b05a7ad (patch) | |
| tree | 130ab4aea889874be6b20e9058efb9eab79bb2eb /lib/snmp/src/misc/snmp_usm.erl | |
| parent | 666884a245fd57f04e0a15b0602c46bf271966f0 (diff) | |
| parent | b73c98771730a6db086d3697eaa6b6ac11be0361 (diff) | |
| download | otp-8852c947d413e8814d663c9319f7b8932b05a7ad.tar.gz otp-8852c947d413e8814d663c9319f7b8932b05a7ad.tar.bz2 otp-8852c947d413e8814d663c9319f7b8932b05a7ad.zip | |
Merge branch 'bmk/snmp/snmp425_integration' into maint
Conflicts:
lib/snmp/doc/src/notes.xml
lib/snmp/src/app/snmp.appup.src
lib/snmp/src/misc/snmp_log.erl
lib/snmp/vsn.mk
Diffstat (limited to 'lib/snmp/src/misc/snmp_usm.erl')
| -rw-r--r-- | lib/snmp/src/misc/snmp_usm.erl | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/lib/snmp/src/misc/snmp_usm.erl b/lib/snmp/src/misc/snmp_usm.erl index 67e3476816..32198deb8b 100644 --- a/lib/snmp/src/misc/snmp_usm.erl +++ b/lib/snmp/src/misc/snmp_usm.erl @@ -16,6 +16,8 @@ %% %% %CopyrightEnd% %% +%% AES: RFC 3826 +%% -module(snmp_usm). @@ -24,7 +26,7 @@ -export([passwd2localized_key/3, localize_key/3]). -export([auth_in/4, auth_out/4, set_msg_auth_params/3]). -export([des_encrypt/3, des_decrypt/3]). --export([aes_encrypt/3, aes_decrypt/5]). +-export([aes_encrypt/5, aes_decrypt/5]). -define(SNMP_USE_V3, true). @@ -42,6 +44,9 @@ -define(i32(Int), (Int bsr 24) band 255, (Int bsr 16) band 255, (Int bsr 8) band 255, Int band 255). +-define(BLOCK_CIPHER_AES, aes_cfb128). +-define(BLOCK_CIPHER_DES, des_cbc). + %%----------------------------------------------------------------- %% Func: passwd2localized_key/3 @@ -210,7 +215,8 @@ des_encrypt(PrivKey, Data, SaltFun) -> IV = list_to_binary(snmp_misc:str_xor(PreIV, Salt)), TailLen = (8 - (length(Data) rem 8)) rem 8, Tail = mk_tail(TailLen), - EncData = crypto:block_encrypt(des_cbc, DesKey, IV, [Data,Tail]), + EncData = crypto:block_encrypt(?BLOCK_CIPHER_DES, + DesKey, IV, [Data,Tail]), {ok, binary_to_list(EncData), Salt}. des_decrypt(PrivKey, MsgPrivParams, EncData) @@ -224,7 +230,8 @@ des_decrypt(PrivKey, MsgPrivParams, EncData) Salt = MsgPrivParams, IV = list_to_binary(snmp_misc:str_xor(PreIV, Salt)), %% Whatabout errors here??? E.g. not a mulitple of 8! - Data = binary_to_list(crypto:block_decrypt(des_cbc, DesKey, IV, EncData)), + Data = binary_to_list(crypto:block_decrypt(?BLOCK_CIPHER_DES, + DesKey, IV, EncData)), Data2 = snmp_pdus:strip_encrypted_scoped_pdu_data(Data), {ok, Data2}; des_decrypt(PrivKey, BadMsgPrivParams, EncData) -> @@ -236,13 +243,12 @@ des_decrypt(PrivKey, BadMsgPrivParams, EncData) -> throw({error, {bad_msgPrivParams, PrivKey, BadMsgPrivParams, EncData}}). -aes_encrypt(PrivKey, Data, SaltFun) -> +aes_encrypt(PrivKey, Data, SaltFun, EngineBoots, EngineTime) -> AesKey = PrivKey, Salt = SaltFun(), - EngineBoots = snmp_framework_mib:get_engine_boots(), - EngineTime = snmp_framework_mib:get_engine_time(), IV = list_to_binary([?i32(EngineBoots), ?i32(EngineTime) | Salt]), - EncData = crypto:block_encrypt(aes_cbf128, AesKey, IV, Data), + EncData = crypto:block_encrypt(?BLOCK_CIPHER_AES, + AesKey, IV, Data), {ok, binary_to_list(EncData), Salt}. aes_decrypt(PrivKey, MsgPrivParams, EncData, EngineBoots, EngineTime) @@ -251,7 +257,8 @@ aes_decrypt(PrivKey, MsgPrivParams, EncData, EngineBoots, EngineTime) Salt = MsgPrivParams, IV = list_to_binary([?i32(EngineBoots), ?i32(EngineTime) | Salt]), %% Whatabout errors here??? E.g. not a mulitple of 8! - Data = binary_to_list(crypto:block_decrypt(aes_cbf128, AesKey, IV, EncData)), + Data = binary_to_list(crypto:block_decrypt(?BLOCK_CIPHER_AES, + AesKey, IV, EncData)), Data2 = snmp_pdus:strip_encrypted_scoped_pdu_data(Data), {ok, Data2}. |