Comments on draft-ietf-smime-key-wrap-00
"Jim Schaad" <jimsch@nwlink.com> Tue, 18 September 2001 02:24 UTC
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Reply-To: jimsch@exmsft.com
From: Jim Schaad <jimsch@nwlink.com>
To: ietf-smime@imc.org, Russ Housley <rhousley@rsasecurity.com>
Subject: Comments on draft-ietf-smime-key-wrap-00
Date: Mon, 17 Sep 2001 19:00:32 -0700
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Russ, Here are the comments that I currently have. 1. I would like to see the text on how to treat two key 3DES keys from the introduction to the section on 3DES key wrap so its all together. (suggest part of section 3 overview) 2. I would like to see the restriction on RC2 key wrap key sizes moved from the introduction to the section on RC2 key wrap so its all together. (suggest part of section 4 overview) 3. Since these algorithms have been designed by us and are not documented elsewhere, I suggest adding the following sections: 3.4 Triple-DES Key Wrap Example The following is an example of doing 3DES Key Wrap. A set of intermediate values corresponding to the named items in section 3.1 are given. CEK: 2923 bf85 e06d d6ae 5291 49f1 f1ba e9ea b3a7 da3d 860d 3e98 KEK: 255e 0d1c 07b6 46df b313 4cc8 43ba 8aa7 1f02 5b7c 0838 251f ICV: 181b 7e96 86e0 4a4e CEKICV: 2923 bf85 e06d d6ae 5291 49f1 f1ba e9ea b3a7 da3d 860d 3e98 181b 7e96 86e0 4a4e IV: 5dd4 cbfc 96f5 453b TEMP1: cfc1 a789 c675 dd2a b49a 3204 ef92 cc03 5c1f 3b97 7a79 60f6 a44d cc5f 729d 8449 TEMP2: 5dd4 cbfc 96f5 453b cfc1 a789 c675 dd2a b49a 3204 ef92 cc03 5c1f 3b97 7a79 60f6 a44d cc5f 729d 8449 TEMP3: 4984 9d72 5fcc 4da4 f660 797a 3b97 1f5c 03cc 92ef 0432 9ab4 2add 75c6 89a7 c1cf 3b45 f596 fccb d45d RESULT: 6901 0761 8ef0 92b3 b48c a179 6b23 4ae9 fa33 ebb4 1596 0403 7db5 d6a8 4eb3 aac2 768c 6327 75a4 67d4 4.4 RC2 Key Wrap Example The following is an example of doing RC2 Key Wrap. A set of intermediate values corresponding to the named items in section 4.1 are given. CEK: b70a 25fb c9d8 6a86 050c e0d7 11ea d4d9 KEK: fd04 fd08 0607 07fb 0003 feff fd02 fe05 LENGTH: 10 LCEK: 10b7 0a25 fbc9 d86a 8605 0ce0 d711 ead4 d9 PAD 4845 cce7 fd12 50 LCEKPAD: 10b7 0a25 fbc9 d86a 8605 0ce0 d711 ead4 d948 45cc e7fd 1250 ICV: 0a6f f19f db40 4988 LCEKPADICV: 10b7 0a25 fbc9 d86a 8605 0ce0 d711 ead4 d948 45cc e7fd 1250 0a6f f19f db40 4988 IV: c7d9 0059 b29e 97f7 TEMP1: a01d a259 3793 1260 e48c 55f5 04ce 70b8 ac8c d79e ffe8 9932 9fa9 8a07 a31f f7a7 TEMP2: c7d9 0059 b29e 97f7 a01d a259 3793 1260 e48c 55f5 04ce 70b8 ac8c d79e ffe8 9932 9fa9 8a07 a31f f7a7 TEMP3: a7f7 1fa3 078a a99f 3299 8eff 9ed7 8cac b870 ce04 f555 8ce4 6012 9337 59a2 1da0 f797 9eb2 5900 d9c7 RESULT: 70e6 99fb 5701 f783 3330 fb71 e87c 85a4 20bd c99a f05d 22af 5a0e 48d3 5f31 3898 6cba afb4 b28d 4f35 Jim
- Comments on draft-ietf-smime-key-wrap-00 Jim Schaad
- Re: Comments on draft-ietf-smime-key-wrap-00 Housley, Russ