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https://github.com/selfxyz/self.git
synced 2026-02-09 14:01:40 -05:00
FINALLY decoded the eContent signed
This commit is contained in:
0xturboblitz
@@ -43,26 +43,6 @@ const mrz =
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mrzInfo.optionalData1 +
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mrzInfo.compositeCheckDigit;
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console.log('mrz: ', mrz);
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const mrzCharcodes = [...mrz].map(char => char.charCodeAt(0));
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console.log('mrzCharcodes:', mrzCharcodes);
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mrzCharcodes.unshift(88); // the length of the mrz data
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mrzCharcodes.unshift(95, 31); // the MRZ_INFO_TAG
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mrzCharcodes.unshift(91); // the new length of the whole array
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mrzCharcodes.unshift(97); // the tag for DG1
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console.log('mrzCharcodes with tags:', mrzCharcodes);
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const hash = crypto.createHash('sha256');
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hash.update(Buffer.from(mrzCharcodes));
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const dataHash = hash.digest('hex');
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console.log('dataHash:', dataHash);
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// C'est bien dataHashes["1"]
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const dataHashes = {
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'1': [
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99, 19, -77, -51, 55, 104, 45, -42, -123, 101, -23, -79, -126, 1, 37, 89,
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@@ -96,252 +76,76 @@ const dataHashes = {
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],
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};
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const dataHashesAsArray = [
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[
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99, 19, -77, -51, 55, 104, 45, -42, -123, 101, -23, -79, -126, 1, 37, 89,
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125, -27, -117, 34, -124, -110, 28, 116, -8, -70, 63, -61, 96, -105, 26,
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-41,
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],
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[
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63, -22, 106, 78, 31, 16, 114, -119, -19, 17, 92, 71, -122, 47, 62, 78, -67,
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-23, -55, -43, 53, 4, 47, -67, -55, -123, 6, 121, 34, -125, 64, -114,
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],
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[
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-120, -101, 87, -112, 121, 15, -104, 127, 85, 25, -102, 80, 20, 58, 51, 75,
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-63, 116, -22, 0, 60, 30, 29, 30, -73, -115, 72, -9, -1, -53, 100, 124,
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],
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[
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0, -62, 104, 108, -19, -10, 97, -26, 116, -58, 69, 110, 26, 87, 17, 89, 110,
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-57, 108, -6, 36, 21, 39, 87, 110, 102, -6, -43, -82, -125, -85, -82,
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],
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[
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-66, 82, -76, -21, -34, 33, 79, 50, -104, -120, -114, 35, 116, -32, 6, -14,
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-100, -115, -128, -9, 10, 61, 98, 86, -8, 45, -49, -46, 90, -24, -81, 38,
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],
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[
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91, -34, -46, -63, 63, -34, 104, 82, 36, 41, -118, -3, 70, 15, -108, -48,
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-100, 45, 105, -85, -15, -61, -71, 43, -39, -94, -110, -55, -34, 89, -18,
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38,
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],
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[
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76, 123, -40, 13, 52, -29, 72, -11, 59, -63, -18, -90, 103, 49, 24, -92,
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-85, -68, -62, -59, -100, -69, -7, 28, -58, 95, 69, 15, -74, 56, 54, 38,
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],
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const contentBytes = [
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48, -126, 1, 37, 2, 1, 0, 48, 11, 6, 9, 96, -122, 72, 1, 101, 3, 4, 2, 1, 48,
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-126, 1, 17, 48, 37, 2, 1, 1, 4, 32, 99, 19, -77, -51, 55, 104, 45, -42, -123,
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101, -23, -79, -126, 1, 37, 89, 125, -27, -117, 34, -124, -110, 28, 116, -8,
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-70, 63, -61, 96, -105, 26, -41, 48, 37, 2, 1, 2, 4, 32, 63, -22, 106, 78, 31,
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16, 114, -119, -19, 17, 92, 71, -122, 47, 62, 78, -67, -23, -55, -43, 53, 4,
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47, -67, -55, -123, 6, 121, 34, -125, 64, -114, 48, 37, 2, 1, 3, 4, 32, -120,
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-101, 87, -112, 121, 15, -104, 127, 85, 25, -102, 80, 20, 58, 51, 75, -63,
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116, -22, 0, 60, 30, 29, 30, -73, -115, 72, -9, -1, -53, 100, 124, 48, 37, 2,
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1, 11, 4, 32, 0, -62, 104, 108, -19, -10, 97, -26, 116, -58, 69, 110, 26, 87,
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17, 89, 110, -57, 108, -6, 36, 21, 39, 87, 110, 102, -6, -43, -82, -125, -85,
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-82, 48, 37, 2, 1, 12, 4, 32, -66, 82, -76, -21, -34, 33, 79, 50, -104, -120,
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-114, 35, 116, -32, 6, -14, -100, -115, -128, -9, 10, 61, 98, 86, -8, 45, -49,
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-46, 90, -24, -81, 38, 48, 37, 2, 1, 13, 4, 32, 91, -34, -46, -63, 63, -34,
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104, 82, 36, 41, -118, -3, 70, 15, -108, -48, -100, 45, 105, -85, -15, -61,
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-71, 43, -39, -94, -110, -55, -34, 89, -18, 38, 48, 37, 2, 1, 14, 4, 32, 76,
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123, -40, 13, 52, -29, 72, -11, 59, -63, -18, -90, 103, 49, 24, -92, -85, -68,
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-62, -59, -100, -69, -7, 28, -58, 95, 69, 15, -74, 56, 54, 38,
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];
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function concatenateHashes(hashes: Buffer[]): Buffer {
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return Buffer.concat(hashes);
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}
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function hashData(data: Buffer): string {
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const hash = crypto.createHash('sha256');
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hash.update(data);
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// return new Uint8Array(hash.digest().buffer);
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return hash.digest('hex');
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}
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// Transforms the dataHashes object into an array of arrays
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const dataHashesAsArray = Object.keys(dataHashes)
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.map(key => {
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const dataHash = dataHashes[key as keyof typeof dataHashes];
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return [Number(key), dataHash];
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})
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.sort((a, b) => (a[0] as number) - (b[0] as number));
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console.log(
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'concatenateHashes(dataHashes) hash:',
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hashData(concatenateHashes(dataHashesAsArray.map(hash => Buffer.from(hash)))),
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console.log('dataHashesAsArray:', dataHashesAsArray);
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console.log('mrz: ', mrz);
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const mrzCharcodes = [...mrz].map(char => char.charCodeAt(0));
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console.log('mrzCharcodes:', mrzCharcodes);
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mrzCharcodes.unshift(88); // the length of the mrz data
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mrzCharcodes.unshift(95, 31); // the MRZ_INFO_TAG
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mrzCharcodes.unshift(91); // the new length of the whole array
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mrzCharcodes.unshift(97); // the tag for DG1
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console.log('mrzCharcodes with tags:', mrzCharcodes);
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const hash = crypto.createHash('sha256');
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hash.update(Buffer.from(mrzCharcodes));
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const mrzHash = Array.from(hash.digest()).map(x => (x < 128 ? x : x - 256));
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// Ça correspond bien :
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console.log('mrzHash:', mrzHash);
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console.log('dataHashes["1"]:', dataHashes['1']);
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// Let's replace the first array with the MRZ hash
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dataHashesAsArray.shift();
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dataHashesAsArray.unshift([1, mrzHash]);
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// Concaténons les dataHashes :
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const concatenatedDataHashes: number[] = [].concat(
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...dataHashesAsArray.map((dataHash: any) => {
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dataHash[1].unshift(...[48, 37, 2, 1, dataHash[0], 4, 32]);
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return dataHash[1];
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}),
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);
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// const concat = [
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// 99, 19, -77, -51, 55, 104, 45, -42, -123, 101, -23, -79, -126, 1, 37, 89, 125,
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// -27, -117, 34, -124, -110, 28, 116, -8, -70, 63, -61, 96, -105, 26, -41, 63,
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// -22, 106, 78, 31, 16, 114, -119, -19, 17, 92, 71, -122, 47, 62, 78, -67, -23,
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// -55, -43, 53, 4, 47, -67, -55, -123, 6, 121, 34, -125, 64, -114, -120, -101,
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// 87, -112, 121, 15, -104, 127, 85, 25, -102, 80, 20, 58, 51, 75, -63, 116, -22,
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// 0, 60, 30, 29, 30, -73, -115, 72, -9, -1, -53, 100, 124, 0, -62, 104, 108,
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// -19, -10, 97, -26, 116, -58, 69, 110, 26, 87, 17, 89, 110, -57, 108, -6, 36,
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// 21, 39, 87, 110, 102, -6, -43, -82, -125, -85, -82, -66, 82, -76, -21, -34,
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// 33, 79, 50, -104, -120, -114, 35, 116, -32, 6, -14, -100, -115, -128, -9, 10,
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// 61, 98, 86, -8, 45, -49, -46, 90, -24, -81, 38, 91, -34, -46, -63, 63, -34,
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// 104, 82, 36, 41, -118, -3, 70, 15, -108, -48, -100, 45, 105, -85, -15, -61,
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// -71, 43, -39, -94, -110, -55, -34, 89, -18, 38, 76, 123, -40, 13, 52, -29, 72,
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// -11, 59, -63, -18, -90, 103, 49, 24, -92, -85, -68, -62, -59, -100, -69, -7,
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// 28, -58, 95, 69, 15, -74, 56, 54, 38,
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// ];
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// const concatHash = crypto.createHash('sha256');
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// concatHash.update(Buffer.from(concat));
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// const concatHashBytes = new Uint8Array(concatHash.digest().buffer);
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// console.log('concatHashBytes:', concatHashBytes);
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const messageDigest = [
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-80, 96, 59, -43, -125, 82, 89, -8, 105, 125, 37, -79, -98, -94, -119, 43, 13,
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39, 115, 6, 59, -27, 81, 110, 49, 75, -1, -72, -101, 73, 116, 86,
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];
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// console.log('messageDigest:', messageDigest);
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// Convert signed bytes to unsigned
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const unsignedBytes = messageDigest.map(b => (b < 0 ? b + 256 : b));
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// Convert to a Buffer, then to hex
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const messageDigestHex = Buffer.from(unsignedBytes).toString('hex');
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console.log('messageDigest:', messageDigestHex);
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// const eContent =
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// '3166301506092a864886f70d01090331080606678108010101301c06092a864886f70d010905310f170d3139313231363137323233385a302f06092a864886f70d01090431220420b0603bd5835259f8697d25b19ea2892b0d2773063be5516e314bffb89b497456';
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// function hexToBytes(hex: string) {
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// let bytes = new Uint8Array(Math.ceil(hex.length / 2));
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// for (let i = 0; i < bytes.length; i++) {
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// bytes[i] = parseInt(hex.substr(i * 2, 2), 16);
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// }
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// return bytes;
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// }
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// console.log('hexToBytes(eContent):', hexToBytes(eContent));
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// const eContentUTF8 = Buffer.from(eContent, 'hex').toString('ascii');
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// console.log(eContentUTF8);
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// 49 : TAG
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// 102 : LENGTH
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// 48... : sequence
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// 49, 102, 48, 21, 6, 9, 42, 134, 72, 134, 247, 13,
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// 1, 9, 3, 49, 8, 6, 6, 103, 129, 8, 1, 1,
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// 1, 48, 28, 6, 9, 42, 134, 72, 134, 247, 13, 1,
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// 9, 5, 49, 15, 23, 13, 49, 57, 49, 50, 49, 54,
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// 49, 55, 50, 50, 51, 56, 90, 48, 47, 6, 9, 42,
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// 134, 72, 134, 247, 13, 1, 9, 4, 49, 34, 4, 32,
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// 176, 96, 59, 213, 131, 82, 89, 248, 105, 125, 37, 177,
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// 158, 162, 137, 43, 13, 39, 115, 6, 59, 229, 81, 110,
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// 49, 75, 255, 184, 155, 73, 116, 86
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// "1.2.840.113549.1.9.4"
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// TAG, LGT, RFC_3369 TAG..., TAG, SEQUENCE...
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// RFC_3369_CONTENT_TYPE_OID 48, 21, 6, 9, 42, 134, 72, 134, 247, 13, 1, 9, 3, | 49, 8, 6, 6, 103, 129, 8, 1, 1, 1,
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// signing-time 48, 28, 6, 9, 42, 134, 72, 134, 247, 13, 1, 9, 5, | 49, 15, 23, 13, 49, 57, 49, 50, 49, 54, 49, 55, 50, 50, 51, 56, 90,
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// RFC_3369_MESSAGE_DIGEST_OID 48, 47, 6, 9, 42, 134, 72, 134, 247, 13, 1, 9, 4, | 49, 34, 4, 32, | 176, 96, 59, 213, 131, 82, 89, 248, 105, 125, 37, 177, 158, 162, 137, 43, 13, 39, 115, 6, 59, 229, 81, 110, 49, 75, 255, 184, 155, 73, 116, 86
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// Donc je veux arriver au hash suivant pour les dataHashes concaténés:
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// 34, 4, 32, | 176, 96, 59, 213, 131, 82, 89, 248, 105, 125, 37, 177, 158, 162, 137, 43, 13, 39, 115, 6, 59, 229, 81, 110, 49, 75, 255, 184, 155, 73, 116, 86
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// const dataHashes = {
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// '1': [
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// 99, 19, -77, -51, 55, 104, 45, -42, -123, 101, -23, -79, -126, 1, 37, 89,
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// 125, -27, -117, 34, -124, -110, 28, 116, -8, -70, 63, -61, 96, -105, 26,
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// -41,
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// ],
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// '2': [
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// 63, -22, 106, 78, 31, 16, 114, -119, -19, 17, 92, 71, -122, 47, 62, 78, -67,
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// -23, -55, -43, 53, 4, 47, -67, -55, -123, 6, 121, 34, -125, 64, -114,
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// ],
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// '3': [
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// -120, -101, 87, -112, 121, 15, -104, 127, 85, 25, -102, 80, 20, 58, 51, 75,
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// -63, 116, -22, 0, 60, 30, 29, 30, -73, -115, 72, -9, -1, -53, 100, 124,
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// ],
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// '11': [
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// 0, -62, 104, 108, -19, -10, 97, -26, 116, -58, 69, 110, 26, 87, 17, 89, 110,
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// -57, 108, -6, 36, 21, 39, 87, 110, 102, -6, -43, -82, -125, -85, -82,
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// ],
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// '12': [
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// -66, 82, -76, -21, -34, 33, 79, 50, -104, -120, -114, 35, 116, -32, 6, -14,
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// -100, -115, -128, -9, 10, 61, 98, 86, -8, 45, -49, -46, 90, -24, -81, 38,
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// ],
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// '13': [
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// 91, -34, -46, -63, 63, -34, 104, 82, 36, 41, -118, -3, 70, 15, -108, -48,
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// -100, 45, 105, -85, -15, -61, -71, 43, -39, -94, -110, -55, -34, 89, -18,
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// 38,
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// ],
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// '14': [
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// 76, 123, -40, 13, 52, -29, 72, -11, 59, -63, -18, -90, 103, 49, 24, -92,
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// -85, -68, -62, -59, -100, -69, -7, 28, -58, 95, 69, 15, -74, 56, 54, 38,
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// ],
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// };
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// ContentInfo encapContentInfo = signedData.getEncapContentInfo();
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// DEROctetString eContent = (DEROctetString)encapContentInfo.getContent();
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const signedData = {
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bodyLength: -1,
|
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elements: [
|
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{
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bodyLength: -1,
|
||||
elements: [
|
||||
{
|
||||
body: [42, -122, 72, -122, -9, 13, 1, 9, 3],
|
||||
identifier: '1.2.840.113549.1.9.3',
|
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},
|
||||
{
|
||||
bodyLength: -1,
|
||||
elements: [
|
||||
{body: [103, -127, 8, 1, 1, 1], identifier: '2.23.136.1.1.1'},
|
||||
],
|
||||
isSorted: true,
|
||||
},
|
||||
],
|
||||
},
|
||||
{
|
||||
bodyLength: -1,
|
||||
elements: [
|
||||
{
|
||||
body: [42, -122, 72, -122, -9, 13, 1, 9, 5],
|
||||
identifier: '1.2.840.113549.1.9.5',
|
||||
},
|
||||
{
|
||||
bodyLength: -1,
|
||||
elements: [
|
||||
{time: [49, 57, 49, 50, 49, 54, 49, 55, 50, 50, 51, 56, 90]},
|
||||
],
|
||||
isSorted: true,
|
||||
},
|
||||
],
|
||||
},
|
||||
{
|
||||
bodyLength: -1,
|
||||
elements: [
|
||||
{
|
||||
body: [42, -122, 72, -122, -9, 13, 1, 9, 4],
|
||||
identifier: '1.2.840.113549.1.9.4',
|
||||
},
|
||||
{
|
||||
bodyLength: -1,
|
||||
elements: [
|
||||
{
|
||||
string: [
|
||||
-80, 96, 59, -43, -125, 82, 89, -8, 105, 125, 37, -79, -98, -94,
|
||||
-119, 43, 13, 39, 115, 6, 59, -27, 81, 110, 49, 75, -1, -72,
|
||||
-101, 73, 116, 86,
|
||||
],
|
||||
},
|
||||
],
|
||||
isSorted: true,
|
||||
},
|
||||
],
|
||||
},
|
||||
// Starting sequence. Should be the same for everybody, but not sure
|
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concatenatedDataHashes.unshift(
|
||||
...[
|
||||
48, -126, 1, 37, 2, 1, 0, 48, 11, 6, 9, 96, -122, 72, 1, 101, 3, 4, 2, 1,
|
||||
48, -126, 1, 17,
|
||||
],
|
||||
isSorted: false,
|
||||
};
|
||||
);
|
||||
|
||||
// Convert the byte arrays into hex strings, and store them in an array in the correct order
|
||||
const hashHexStrings = Object.keys(dataHashes)
|
||||
.sort()
|
||||
.map(key => {
|
||||
const byteArray = dataHashes[key as keyof typeof dataHashes];
|
||||
// Convert signed bytes to unsigned, then to hex string
|
||||
const hexString = byteArray
|
||||
.map(b => (b < 0 ? b + 256 : b))
|
||||
.map(b => b.toString(16).padStart(2, '0'))
|
||||
.join('');
|
||||
return hexString;
|
||||
});
|
||||
|
||||
// Concatenate the hex strings
|
||||
const concatenatedHashesHex = hashHexStrings.join('');
|
||||
|
||||
// Hash the concatenated hashes to get the message digest in hex
|
||||
const messageDigestHex2 = hashDataHex(concatenatedHashesHex);
|
||||
|
||||
console.log('messageDigestHex2:', messageDigestHex2);
|
||||
|
||||
// Function to hash hex data
|
||||
function hashDataHex(dataHex: string): string {
|
||||
const hash = crypto.createHash('sha256');
|
||||
hash.update(dataHex, 'hex');
|
||||
return hash.digest('hex');
|
||||
}
|
||||
// They are equal !
|
||||
console.log('concatenatedDataHashes', concatenatedDataHashes);
|
||||
console.log('contentBytes', contentBytes);
|
||||
|
||||
Reference in New Issue
Block a user