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Fix Polkadot identicon blake2 (#103)

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* Fix Polkadot identicon blake2

* CHANGELOG
This commit is contained in:
Jaco Greeff
2019-03-27 11:39:31 +01:00
committed by GitHub
parent f7dec928ae
commit 5beff953fb
7 changed files with 52 additions and 45 deletions
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packages/ui-identicon/src/icons/Polkadot.tsx
+5 -2
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@@ -31,11 +31,14 @@ type Scheme = {
colors: Array<number>
};
const blake2 = (value: Uint8Array) =>
blake2AsU8a(value, 512);
const s = 64;
const c = s / 2;
const z = s / 64 * 5;
const zero = blake2AsU8a(new Uint8Array(32));
const zero = blake2(new Uint8Array(32));
const schema: { [index: string]: Scheme } = {
target: { freq: 1, colors: [0, 28, 0, 0, 28, 0, 0, 28, 0, 0, 28, 0, 0, 28, 0, 0, 28, 0, 1] },
cube: { freq: 20, colors: [0, 1, 3, 2, 4, 3, 0, 1, 3, 2, 4, 3, 0, 1, 3, 2, 4, 3, 5] },
@@ -130,7 +133,7 @@ export default class Identicon extends React.PureComponent<Props> {
private getColors () {
const { value } = this.props;
const total = Object.keys(schema).map(k => schema[k].freq).reduce((a, b) => a + b);
const id = Array.from(blake2AsU8a(decodeAddress(value))).map((x, i) => (x + 256 - zero[i]) % 256);
const id = Array.from(blake2(decodeAddress(value))).map((x, i) => (x + 256 - zero[i]) % 256);
const d = Math.floor((id[30] + id[31] * 256) % total);
const rot = (id[28] % 6) * 3;
const sat = (Math.floor(id[29] * 70 / 256 + 26) % 80) + 30;