Messages in this thread | | | Date | Thu, 8 Dec 2016 19:29:54 +0800 | From | "Longpeng (Mike)" <> | Subject | Re: Question about ctr mode 3des-ede IV len |
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Hi Jussi,
On 2016/12/7 21:15, Jussi Kivilinna wrote:
> Hello, > > 07.12.2016, 14:43, Longpeng (Mike) kirjoitti: >> Hi Jussi and Herbert, >> >> I saw serveral des3-ede testcases(in crypto/testmgr.h) has 16-bytes IV, and the >> libgcrypt/nettle/RFC1851 said the IV-len is 8-bytes. >> >> Would you please tell me why these testcases has 16-bytes IV ? > > Because I used same tool to create test-vectors which I had previously used to create AES/Camellia/Serpent/Twofish test-vectors. So, I must have forgotten to change 16-byte IV generation to 8 bytes and thus those testcases in crypto/testmgr.h have wrong length. The extra trailing 8 bytes are not used and can be removed. >
Thank you very much. :)
> -Jussi > >> >> Thank you. :) >> > > . >
-- Regards, Longpeng(Mike)
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