FM / utils

/usr/local/lib/node_modules/npm/node_modules/@tufjs/models/dist/utils/

/usr/local/lib/node_modules/npm/node_modules/@tufjs/models/dist/utils

Name	Size	Mode	Actions
guard.js	1128	0644	edit dl rm
index.js	1579	0644	edit dl rm
key.js	4864	0644	edit dl rm
oid.js	857	0644	edit dl rm
types.js	77	0644	edit dl rm
verify.js	667	0644	edit dl rm

Edit: /usr/local/lib/node_modules/npm/node_modules/@tufjs/models/dist/utils/key.js (4864B)

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.getPublicKey = getPublicKey;
const crypto_1 = __importDefault(require("crypto"));
const error_1 = require("../error");
const oid_1 = require("./oid");
const ASN1_TAG_SEQUENCE = 0x30;
const ANS1_TAG_BIT_STRING = 0x03;
const NULL_BYTE = 0x00;
const OID_EDDSA = '1.3.101.112';
const OID_EC_PUBLIC_KEY = '1.2.840.10045.2.1';
const OID_EC_CURVE_P256V1 = '1.2.840.10045.3.1.7';
const PEM_HEADER = '-----BEGIN PUBLIC KEY-----';
function getPublicKey(keyInfo) {
    switch (keyInfo.keyType) {
        case 'rsa':
            return getRSAPublicKey(keyInfo);
        case 'ed25519':
            return getED25519PublicKey(keyInfo);
        case 'ecdsa':
        case 'ecdsa-sha2-nistp256':
        case 'ecdsa-sha2-nistp384':
            return getECDCSAPublicKey(keyInfo);
        default:
            throw new error_1.UnsupportedAlgorithmError(`Unsupported key type: ${keyInfo.keyType}`);
    }
}
function getRSAPublicKey(keyInfo) {
    // Only support PEM-encoded RSA keys
    if (!keyInfo.keyVal.startsWith(PEM_HEADER)) {
        throw new error_1.CryptoError('Invalid key format');
    }
    const key = crypto_1.default.createPublicKey(keyInfo.keyVal);
    switch (keyInfo.scheme) {
        case 'rsassa-pss-sha256':
            return {
                key: key,
                padding: crypto_1.default.constants.RSA_PKCS1_PSS_PADDING,
            };
        default:
            throw new error_1.UnsupportedAlgorithmError(`Unsupported RSA scheme: ${keyInfo.scheme}`);
    }
}
function getED25519PublicKey(keyInfo) {
    let key;
    // If key is already PEM-encoded we can just parse it
    if (keyInfo.keyVal.startsWith(PEM_HEADER)) {
        key = crypto_1.default.createPublicKey(keyInfo.keyVal);
    }
    else {
        // If key is not PEM-encoded it had better be hex
        if (!isHex(keyInfo.keyVal)) {
            throw new error_1.CryptoError('Invalid key format');
        }
        key = crypto_1.default.createPublicKey({
            key: ed25519.hexToDER(keyInfo.keyVal),
            format: 'der',
            type: 'spki',
        });
    }
    return { key };
}
function getECDCSAPublicKey(keyInfo) {
    let key;
    // If key is already PEM-encoded we can just parse it
    if (keyInfo.keyVal.startsWith(PEM_HEADER)) {
        key = crypto_1.default.createPublicKey(keyInfo.keyVal);
    }
    else {
        // If key is not PEM-encoded it had better be hex
        if (!isHex(keyInfo.keyVal)) {
            throw new error_1.CryptoError('Invalid key format');
        }
        key = crypto_1.default.createPublicKey({
            key: ecdsa.hexToDER(keyInfo.keyVal),
            format: 'der',
            type: 'spki',
        });
    }
    return { key };
}
const ed25519 = {
    // Translates a hex key into a crypto KeyObject
    // https://keygen.sh/blog/how-to-use-hexadecimal-ed25519-keys-in-node/
    hexToDER: (hex) => {
        const key = Buffer.from(hex, 'hex');
        const oid = (0, oid_1.encodeOIDString)(OID_EDDSA);
        // Create a byte sequence containing the OID and key
        const elements = Buffer.concat([
            Buffer.concat([
                Buffer.from([ASN1_TAG_SEQUENCE]),
                Buffer.from([oid.length]),
                oid,
            ]),
            Buffer.concat([
                Buffer.from([ANS1_TAG_BIT_STRING]),
                Buffer.from([key.length + 1]),
                Buffer.from([NULL_BYTE]),
                key,
            ]),
        ]);
        // Wrap up by creating a sequence of elements
        const der = Buffer.concat([
            Buffer.from([ASN1_TAG_SEQUENCE]),
            Buffer.from([elements.length]),
            elements,
        ]);
        return der;
    },
};
const ecdsa = {
    hexToDER: (hex) => {
        const key = Buffer.from(hex, 'hex');
        const bitString = Buffer.concat([
            Buffer.from([ANS1_TAG_BIT_STRING]),
            Buffer.from([key.length + 1]),
            Buffer.from([NULL_BYTE]),
            key,
        ]);
        const oids = Buffer.concat([
            (0, oid_1.encodeOIDString)(OID_EC_PUBLIC_KEY),
            (0, oid_1.encodeOIDString)(OID_EC_CURVE_P256V1),
        ]);
        const oidSequence = Buffer.concat([
            Buffer.from([ASN1_TAG_SEQUENCE]),
            Buffer.from([oids.length]),
            oids,
        ]);
        // Wrap up by creating a sequence of elements
        const der = Buffer.concat([
            Buffer.from([ASN1_TAG_SEQUENCE]),
            Buffer.from([oidSequence.length + bitString.length]),
            oidSequence,
            bitString,
        ]);
        return der;
    },
};
const isHex = (key) => /^[0-9a-fA-F]+$/.test(key);

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