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chore: simulator utils cleanup (AztecProtocol#4507)
Cleanup of utils in simulator package.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,41 +1,18 @@ | ||
| import { GrumpkinPrivateKey } from '@aztec/circuits.js'; | ||
| import { Grumpkin } from '@aztec/circuits.js/barretenberg'; | ||
| import { pedersenHash } from '@aztec/foundation/crypto'; | ||
| import { Fr } from '@aztec/foundation/fields'; | ||
|
|
||
| /** | ||
| * A point in the format that Aztec.nr uses. | ||
| */ | ||
| export type NoirPoint = { | ||
| /** The x coordinate. */ | ||
| x: bigint; | ||
| /** The y coordinate. */ | ||
| y: bigint; | ||
| }; | ||
|
|
||
| /** | ||
| * Computes the resulting storage slot for an entry in a mapping. | ||
| * @param mappingSlot - The slot of the mapping within state. | ||
| * @param owner - The key of the mapping. | ||
| * @param key - The key of the mapping. | ||
| * @returns The slot in the contract storage where the value is stored. | ||
| */ | ||
| export function computeSlotForMapping(mappingSlot: Fr, owner: NoirPoint | Fr) { | ||
| const isFr = (owner: NoirPoint | Fr): owner is Fr => typeof (owner as Fr).value === 'bigint'; | ||
| const ownerField = isFr(owner) ? owner : new Fr(owner.x); | ||
|
|
||
| return Fr.fromBuffer(pedersenHash([mappingSlot, ownerField].map(f => f.toBuffer()))); | ||
| } | ||
|
|
||
| /** | ||
| * Computes the public key for a private key. | ||
| * @param privateKey - The private key. | ||
| * @param grumpkin - The grumpkin instance. | ||
| * @returns The public key. | ||
| */ | ||
| export function toPublicKey(privateKey: GrumpkinPrivateKey, grumpkin: Grumpkin): NoirPoint { | ||
| const point = grumpkin.mul(Grumpkin.generator, privateKey); | ||
| return { | ||
| x: point.x.value, | ||
| y: point.y.value, | ||
| }; | ||
| export function computeSlotForMapping( | ||
| mappingSlot: Fr, | ||
| key: { | ||
| /** Serialize to a field. */ | ||
| toField: () => Fr; | ||
| }, | ||
| ) { | ||
| return Fr.fromBuffer(pedersenHash([mappingSlot, key.toField()].map(field => field.toBuffer()))); | ||
| } |