Hi Mathias, yes I forgot to mention the CFLAG. If you use AES I suggest to use: CFLAGS += -DCRYPTO_AES and not: CFLAGS += -DCRYPTO_THREEDES then the appropriate CIPHER_MAX_CONTEXT_SIZE for AES will be defined [1].
Best regards, Martin [1] https://github.com/RIOT-OS/RIOT/blob/master/sys/include/crypto/ciphers.h#L56 ________________________________________ Von: users [[email protected]]" im Auftrag von "Tausig Mathias [[email protected]] Gesendet: Donnerstag, 11. Februar 2016 12:34 An: [email protected] Betreff: Re: [riot-users] Using AES encryption I did use the USEMODULE clause, but without the addtional CFLAGS setting, it won't work. aes_init/cipher_init will return 0 because CIPHER_MAX_CONTEXT_SIZE is set to 1 in sys/include/crypto/ciphers.h. The unit test you referenced works, because it adds a "CFLAGS += -DCRYPTO_THREEDES" (which enables aes, too, because the CIPHER_MAX_CONTEXT_SIZE set for 3DES is larger then the one for AES) in the Makefile.include, too. cheers Mathias Am Donnerstag, den 11.02.2016, 10:33 +0000 schrieb Landsmann, Martin: > Hi Mathias, > > You need to add: > USEMODULE += crypto > to your Makefile to enable the AES cypher in your implementation. > This line includes the crypto module which includes AES. > Just head over to the RIOT wiki to learn more about modules [1] and > how to use them. > > You can also have a look into the crypto unittests [2] to get some > hints how to use the AES implementation. > > Best Regards, > Martin > > [1] > https://github.com/RIOT-OS/RIOT/wiki/Introduction#including-modules > [2] https://github.com/RIOT-OS/RIOT/tree/master/tests/unittests/tests > -crypto > ________________________________________ > Von: users [[email protected]]" im Auftrag von > "Tausig Mathias [[email protected]] > Gesendet: Donnerstag, 11. Februar 2016 11:17 > An: [email protected] > Betreff: [riot-users] Using AES encryption > > Hy! > > I am trying to write a litle RIOT-OS project which uses AES > encryption. > After some fiddling around, I made it work by adding a "CFLAGS += > -DCRYPTO_AES" line to my Makefile. > Is this the recommended way to do it? I am asking, because I could > not > find any reference to it in the documentations. > > cheers > Mathias > _______________________________________________ > users mailing list > [email protected] > https://lists.riot-os.org/mailman/listinfo/users -- DI Mathias Tausig,Kompetenzzentrum für IT-Security, FH Campus Wien,Informationstechnologien und Telekommunikation. Favoritenstrasse 226, Raum B.3.07a,1100 Wien, Austria.T: +43 1 606 68 77-2142, F: +43 1 606 68 [email protected] _______________________________________________ users mailing list [email protected] https://lists.riot-os.org/mailman/listinfo/users
