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Different round keys for columns 0,1 and 2,3 in AesGenerator4R (#76)

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* this fixes identical sequences of columns 0/2 and 1/3 if their states are the same
* added TestU01 results for AesGenerator1R and AesGenerator4R
* added a note about the reversibility of AesHash1R
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tevador 2019-06-22 15:56:01 +02:00 • committed by GitHub
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doc/specs.md
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@ -169,41 +169,46 @@ state0 (16 B) state1 (16 B) state2 (16 B) state3 (16 B)
### 3.3 AesGenerator4R
AesGenerator4R works the same way as AesGenerator1R, except it uses 4 rounds per column:
AesGenerator4R works similar way as AesGenerator1R, except it uses 4 rounds per column. Columns 0 and 1 use a different set of keys than columns 2 and 3.
```
state0 (16 B) state1 (16 B) state2 (16 B) state3 (16 B)
| | | |
AES decrypt AES encrypt AES decrypt AES encrypt
(key0) (key0) (key0) (key0)
(key0) (key0) (key4) (key4)
| | | |
v v v v
AES decrypt AES encrypt AES decrypt AES encrypt
(key1) (key1) (key1) (key1)
(key1) (key1) (key5) (key5)
| | | |
v v v v
AES decrypt AES encrypt AES decrypt AES encrypt
(key2) (key2) (key2) (key2)
(key2) (key2) (key6) (key6)
| | | |
v v v v
AES decrypt AES encrypt AES decrypt AES encrypt
(key3) (key3) (key3) (key3)
(key3) (key3) (key7) (key7)
| | | |
v v v v
state0' state1' state2' state3'
```
AesGenerator4R uses the following 4 round keys:
AesGenerator4R uses the following 8 round keys:
```
key0 = 5d 46 90 f8 a6 e4 fb 7f b7 82 1f 14 95 9e 35 cf
key1 = 50 c4 55 6a 8a 27 e8 fe c3 5a 5c bd dc ff 41 67
key2 = a4 47 4c 11 e4 fd 24 d5 d2 9a 27 a7 ac 4a 32 3d
key3 = 2a 3a 0c 81 ff ae a9 99 d9 db d3 42 08 db f6 76
key0 = dd aa 21 64 db 3d 83 d1 2b 6d 54 2f 3f d2 e5 99
key1 = 50 34 0e b2 55 3f 91 b6 53 9d f7 06 e5 cd df a5
key2 = 04 d9 3e 5c af 7b 5e 51 9f 67 a4 0a bf 02 1c 17
key3 = 63 37 62 85 08 5d 8f e7 85 37 67 cd 91 d2 de d8
key4 = 73 6f 82 b5 a6 a7 d6 e3 6d 8b 51 3d b4 ff 9e 22
key5 = f3 6b 56 c7 d9 b3 10 9c 4e 4d 02 e9 d2 b7 72 b2
key6 = e7 c9 73 f2 8b a3 65 f7 0a 66 a9 2b a7 ef 3b f6
key7 = 09 d6 7c 7a de 39 58 91 fd d1 06 0c 2d 76 b0 c0
```
These keys were generated as:
```
key0, key1, key2, key3 = Hash512("RandomX AesGenerator4R keys")
key0, key1, key2, key3 = Hash512("RandomX AesGenerator4R keys 0-3")
key4, key5, key6, key7 = Hash512("RandomX AesGenerator4R keys 4-7")
```
### 3.4 AesHash1R