55 lines
2.1 KiB
JavaScript
55 lines
2.1 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.MessageSignatureContent = void 0;
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/*
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Copyright 2023 The Sigstore Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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const core_1 = require("@sigstore/core");
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const protobuf_specs_1 = require("@sigstore/protobuf-specs");
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// Map from the Sigstore protobuf HashAlgorithm enum to
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// the string values used by the Node.js crypto module.
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const HASH_ALGORITHM_MAP = {
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[protobuf_specs_1.HashAlgorithm.HASH_ALGORITHM_UNSPECIFIED]: 'sha256',
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[protobuf_specs_1.HashAlgorithm.SHA2_256]: 'sha256',
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[protobuf_specs_1.HashAlgorithm.SHA2_384]: 'sha384',
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[protobuf_specs_1.HashAlgorithm.SHA2_512]: 'sha512',
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[protobuf_specs_1.HashAlgorithm.SHA3_256]: 'sha3-256',
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[protobuf_specs_1.HashAlgorithm.SHA3_384]: 'sha3-384',
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};
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class MessageSignatureContent {
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signature;
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messageDigest;
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artifact;
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hashAlgorithm;
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constructor(messageSignature, artifact) {
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this.signature = messageSignature.signature;
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this.messageDigest = messageSignature.messageDigest.digest;
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this.artifact = artifact;
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this.hashAlgorithm =
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HASH_ALGORITHM_MAP[messageSignature.messageDigest.algorithm] ??
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/* istanbul ignore next */ 'sha256';
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}
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compareSignature(signature) {
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return core_1.crypto.bufferEqual(signature, this.signature);
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}
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compareDigest(digest) {
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return core_1.crypto.bufferEqual(digest, this.messageDigest);
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}
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verifySignature(key) {
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return core_1.crypto.verify(this.artifact, key, this.signature, this.hashAlgorithm);
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}
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}
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exports.MessageSignatureContent = MessageSignatureContent;
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