covid19/dp3t-documents
covid19/dp3t-documents
1
0
Fork 0
mirror of https://github.com/DP-3T/documents.git synced 2024-11-10 20:58:51 +01:00
Code Releases Activity

Add design 1 vectors too

Browse Source
This commit is contained in:
Dirk-Willem van Gulik 2020-04-10 14:08:53 +02:00
parent 9352a6f897
commit 920ecdcdff
1 changed files with 19 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
implementation-profiles/profile.md
View File

@ -60,14 +60,27 @@ The filter should be published prefixed by an RFC3161 timestamp.
## Design 1
The PRF used is HMAC-SHA256 as per RFC 6234 and RFC 2104 - and and where Skt_ is used as the `key’ and the string “broadcast key” (without trailing \0, i.e. exactly those 13 US-ASCII characters is the plaintext.
The PRG used is AES128 in counter mode; with the IV set to a 128 bit unsigned number in network order (i.e the first IV is a byte array if [ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 ]) we start at 0, not 1
and the plaintext 128 bits of 0’s.
The PRF used is HMAC-SHA256 as per RFC 6234 and RFC 2104 - and and where Skt_ is used as the `key’ and the string “Decentralized Privacy-Preserving Proximity Tracing” (without trailing \0, i.e. exactly those 50 US-ASCII characters is the plaintext.
Test vectors:
SK:
0000000000000000000000000000000000000000000000000000000000000000
SK derivation:
66687aadf862bd776c8fc18b8e9f8e20089714856ee233b3902a591d0d5f2925
The PRG used is AES128 in counter mode; with the IV set to a 128 bit unsigned number in network order (i.e the first IV is a byte array if [ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 ]) we start at 0, not 1 and the plaintext 128 bits of 0’s.
IV: 00000000000000000000000000000000
eph: 0 - Ephemeral(day:0, token:c7044845a6a0da7a61687e1bb08afca4)
IV: 00000000000000000000000000000001
eph: 1 - Ephemeral(day:0, token:a747e729bf2e3de3ec6ecbdb0f889f5b)
IV: 00000000000000000000000000000002
eph: 2 - Ephemeral(day:0, token:034015608c5a55672315cb614f5a94a3)