95 lines
3.7 KiB
JavaScript
95 lines
3.7 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.HASHEDREKORD_API_VERSION_V1 = void 0;
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exports.verifyHashedRekordTLogBody = verifyHashedRekordTLogBody;
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exports.verifyHashedRekordTLogBodyV2 = verifyHashedRekordTLogBodyV2;
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/*
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Copyright 2025 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 error_1 = require("../error");
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exports.HASHEDREKORD_API_VERSION_V1 = '0.0.1';
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// Compare the given hashedrekord tlog entry to the given bundle
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function verifyHashedRekordTLogBody(tlogEntry, content) {
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switch (tlogEntry.apiVersion) {
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case exports.HASHEDREKORD_API_VERSION_V1:
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return verifyHashedrekord001TLogBody(tlogEntry, content);
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default:
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throw new error_1.VerificationError({
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code: 'TLOG_BODY_ERROR',
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message: `unsupported hashedrekord version: ${tlogEntry.apiVersion}`,
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});
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}
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}
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// Compare the given hashedrekor tlog entry to the given bundle. This function is
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// specifically for Rekor V2 entries.
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function verifyHashedRekordTLogBodyV2(tlogEntry, content) {
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const spec = tlogEntry.spec?.spec;
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if (!spec) {
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throw new error_1.VerificationError({
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code: 'TLOG_BODY_ERROR',
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message: `missing dsse spec`,
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});
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}
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switch (spec.$case) {
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case 'hashedRekordV002':
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return verifyHashedrekord002TLogBody(spec.hashedRekordV002, content);
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default:
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throw new error_1.VerificationError({
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code: 'TLOG_BODY_ERROR',
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message: `unsupported version: ${spec.$case}`,
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});
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}
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}
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// Compare the given hashedrekord v0.0.1 tlog entry to the given message
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// signature
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function verifyHashedrekord001TLogBody(tlogEntry, content) {
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// Ensure that the bundles message signature matches the tlog entry
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const tlogSig = tlogEntry.spec.signature.content || '';
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if (!content.compareSignature(Buffer.from(tlogSig, 'base64'))) {
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throw new error_1.VerificationError({
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code: 'TLOG_BODY_ERROR',
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message: 'signature mismatch',
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});
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}
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// Ensure that the bundle's message digest matches the tlog entry
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const tlogDigest = tlogEntry.spec.data.hash?.value || '';
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if (!content.compareDigest(Buffer.from(tlogDigest, 'hex'))) {
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throw new error_1.VerificationError({
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code: 'TLOG_BODY_ERROR',
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message: 'digest mismatch',
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});
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}
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}
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// Compare the given hashedrekord v0.0.2 tlog entry to the given message
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// signature
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function verifyHashedrekord002TLogBody(spec, content) {
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// Ensure that the bundles message signature matches the tlog entry
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const tlogSig = spec.signature?.content || Buffer.from('');
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if (!content.compareSignature(tlogSig)) {
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throw new error_1.VerificationError({
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code: 'TLOG_BODY_ERROR',
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message: 'signature mismatch',
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});
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}
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// Ensure that the bundle's message digest matches the tlog entry
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const tlogHash = spec.data?.digest || Buffer.from('');
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if (!content.compareDigest(tlogHash)) {
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throw new error_1.VerificationError({
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code: 'TLOG_BODY_ERROR',
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message: 'digest mismatch',
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});
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}
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}
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