urbit-ob

commit cc32174f7226a7377a7a16025487316f735c4229
parent 475bd441aa2778795e4c51276805edce245cfb40
Author: Jared Tobin <jared@jtobin.io>
Date:   Thu, 14 Mar 2019 16:08:18 +1300

Use the old algorithm's seeds.

.. we want to preserve @p's, after all.

Diffstat:
M
src/internal/ob.js
 | 
11
+----------
M
test/ob.test.js
 | 
16
++++++++--------

2 files changed, 9 insertions(+), 18 deletions(-)
diff --git a/src/internal/ob.js b/src/internal/ob.js
@@ -14,14 +14,6 @@ const ux_ffff_ffff_0000_0000 = new BN('ffffffff00000000', 'hex')
 const u_65535 = new BN('65535')
 const u_65536 = new BN('65536')
 
-// PRF seeds
-const rako = [
-  0x4b387af7,
-  0x85bcae01,
-  0xee281300,
-  0xb76d5eed,
-]
-
 // old PRF seeds
 const raku = [
   0xb76d5eed,
@@ -32,7 +24,7 @@ const raku = [
 
 // a PRF for j in { 0, .., 3 }
 const F = (j, arg) =>
-  muk(rako[j], 2, arg)
+  muk(raku[j], 2, arg)
 
 /**
  * Conceal structure v3.
@@ -312,7 +304,6 @@ module.exports = {
 
   F,
   raku,
-  rako,
 
   fe,
   Fe,
diff --git a/test/ob.test.js b/test/ob.test.js
@@ -65,20 +65,20 @@ describe('fein/fynd', () => {
 
   it('fein matches expected reference values', () => {
     let input = new BN('123456789')
-    let output = new BN('4133907371')
+    let output = new BN('1897766331')
     expect(fein(input).eq(output)).to.equal(true)
 
     input = new BN('15663360')
-    output = new BN('3867563781')
+    output = new BN('1208402137')
     expect(fein(input).eq(output)).to.equal(true)
   })
 
   it('fynd matches expected reference values', () => {
-    let input = new BN('4133907371')
+    let input = new BN('1897766331')
     let output = new BN('123456789')
     expect(fynd(input).eq(output)).to.equal(true)
 
-    input = new BN('3867563781')
+    input = new BN('1208402137')
     output = new BN('15663360')
     expect(fynd(input).eq(output)).to.equal(true)
   })
@@ -124,20 +124,20 @@ describe('feis/tail', () => {
 
   it('feis matches expected reference values', () => {
     let input = new BN ('123456789')
-    let output = new BN('4076532648')
+    let output = new BN('2060458291')
     expect(feis(input).eq(output)).to.equal(true)
 
     input = new BN('15663360')
-    output = new BN('2239503936')
+    output = new BN('1195593620')
     expect(feis(input).eq(output)).to.equal(true)
   })
 
   it('tail matches expected reference values', () => {
-    let input = new BN('4076532648')
+    let input = new BN('2060458291')
     let output = new BN ('123456789')
     expect(tail(input).eq(output)).to.equal(true)
 
-    input = new BN('2239503936')
+    input = new BN('1195593620')
     output = new BN('15663360')
     expect(tail(input).eq(output)).to.equal(true)
   })