71 lines
2.7 KiB
JavaScript
71 lines
2.7 KiB
JavaScript
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import { getContext } from "./context.js";
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import { bytesToHex, concatUint8Arrays, hexToBytes, isZeroUint8Array } from "../helpers/index.js";
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import { PointFormat } from "../types.js";
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import { EmptyAggregateError, InvalidLengthError, InvalidOrderError } from "../errors.js";
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import { SIGNATURE_LENGTH_COMPRESSED, SIGNATURE_LENGTH_UNCOMPRESSED } from "../constants.js";
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export class Signature {
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constructor(value) {
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if (!value.isValidOrder()) {
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throw new InvalidOrderError();
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}
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this.value = value;
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}
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/**
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* @param type Does not affect `herumi` implementation, always de-serializes to `jacobian`
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* @param validate With `herumi` implementation signature validation is always on regardless of this flag.
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*/
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static fromBytes(bytes, _type, _validate = true) {
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const context = getContext();
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const signature = new context.Signature();
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if (!isZeroUint8Array(bytes)) {
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if (bytes.length === SIGNATURE_LENGTH_COMPRESSED) {
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signature.deserialize(bytes);
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}
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else if (bytes.length === SIGNATURE_LENGTH_UNCOMPRESSED) {
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signature.deserializeUncompressed(bytes);
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}
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else {
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throw new InvalidLengthError("Signature", bytes.length);
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}
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signature.deserialize(bytes);
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}
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return new Signature(signature);
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}
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static fromHex(hex) {
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return this.fromBytes(hexToBytes(hex));
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}
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static aggregate(signatures) {
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if (signatures.length === 0) {
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throw new EmptyAggregateError();
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}
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const context = getContext();
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const signature = new context.Signature();
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signature.aggregate(signatures.map((sig) => sig.value));
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return new Signature(signature);
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}
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static verifyMultipleSignatures(sets) {
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const context = getContext();
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return context.multiVerify(sets.map((s) => s.publicKey.value), sets.map((s) => s.signature.value), sets.map((s) => s.message));
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}
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verify(publicKey, message) {
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return publicKey.value.verify(this.value, message);
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}
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verifyAggregate(publicKeys, message) {
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return this.value.fastAggregateVerify(publicKeys.map((key) => key.value), message);
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}
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verifyMultiple(publicKeys, messages) {
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return this.value.aggregateVerifyNoCheck(publicKeys.map((key) => key.value), concatUint8Arrays(messages));
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}
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toBytes(format) {
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if (format === PointFormat.uncompressed) {
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return this.value.serializeUncompressed();
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}
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else {
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return this.value.serialize();
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}
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}
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toHex(format) {
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return bytesToHex(this.toBytes(format));
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}
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}
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