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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 | 1x 1x 1x 136x 136x 95x 95x 95x 1x 77x 77x 2x 75x 8x 67x 7x 60x 6x 54x 53x 1x 1x 43x 43x 43x 3x 3x 40x 25x 25x 15x 6x 6x 9x 8x 8x 1x 1x 15x 15x 14x 14x 14x 14x 14x 1x 7x 7x 6x 6x 6x 6x 1x 35x 35x 34x 34x 34x 33x 1x 1x 1x 32x 1x 1x 1x 31x 31x 3x 3x 28x 2x 2x 26x 2x 2x 24x 24x 31x 1x 27x 26x 26x 26x 26x 1x 1x 1x 25x 1x 1x 1x 24x 24x 3x 3x 3x 21x 2x 2x 2x 19x 2x 2x 2x 17x 17x 17x 24x 1x | /** * @file Multi-Factor Derived Key Crypto Functions * @copyright Multifactor 2022 All Rights Reserved * * @description * Cryptographic operations for a multi-factor derived key * * @author Vivek Nair (https://nair.me) <[email protected]> */ const { hkdf } = require('@panva/hkdf') const crypto = require('crypto') const getKeyPairFromSeed = require('human-crypto-keys').getKeyPairFromSeed let subtle /* istanbul ignore next */ if (typeof window !== 'undefined') { subtle = window.crypto.subtle } else { subtle = crypto.webcrypto.subtle } /** * Create a sub-key of specified size and purpose using HKDF * * @example * // setup multi-factor derived key * const key = await mfkdf.setup.key([ await mfkdf.setup.factors.password('password') ]) * * // get 16-byte sub-key for "eth" using hkdf/sha256 * const subkey = await key.getSubkey(16, 'eth', 'sha256') * subkey.toString('hex') // -> 54ad9e5acbc1c33b08a15dd79126e9c9 * * @param {number} [size] - The size of sub-key to derive in bytes; same as base key by default * @param {string} [purpose=''] - Factors used to derive this key * @param {string} [digest='sha512'] - HKDF digest to use; sha1, sha256, sha384, or sha512 * @returns {Buffer} Derived sub-key * @author Vivek Nair (https://nair.me) <[email protected]> * @since 0.10.0 * @memberOf MFKDFDerivedKey * @async */ async function getSubkey (size = this.policy.size, purpose = '', digest = 'sha512') { const tag = digest + ';' + size + ';' + purpose if (this.subkeys[tag]) return this.subkeys[tag] const result = Buffer.from(await hkdf(digest, this.key, '', purpose, size)) this.subkeys[tag] = result return result } module.exports.getSubkey = getSubkey /** * Create a symmetric sub-key of specified type * * @example * // setup multi-factor derived key * const key = await mfkdf.setup.key([ await mfkdf.setup.factors.password('password') ]) * * // get 16-byte AES128 sub-key * const subkey = await key.getSymmetricKey('aes128') * subkey.toString('hex') // -> c985454e008e5ecc695e865d339cb2be * * @param {string} [type='aes256'] - Type of key to generate; des, 3des, aes128, aes192, or aes256 * @param {boolean} [auth=false] - Whether this is being used for authentication * @returns {Buffer} Derived sub-key as a Buffer * @author Vivek Nair (https://nair.me) <[email protected]> * @since 0.10.0 * @memberOf MFKDFDerivedKey * @async */ async function getSymmetricKey (type = 'aes256', auth = false) { type = type.toLowerCase() if (type === 'des') { // DES return await this.getSubkey(8, auth ? 'DESAUTH' : 'DES', 'sha256') } else if (type === '3des') { // 3DES return await this.getSubkey(24, auth ? '3DESAUTH' : '3DES', 'sha256') } else if (type === 'aes128') { // AES 128 return await this.getSubkey(16, auth ? 'AES128AUTH' : 'AES128', 'sha256') } else if (type === 'aes192') { // AES 192 return await this.getSubkey(24, auth ? 'AES192AUTH' : 'AES192', 'sha256') } else if (type === 'aes256') { // AES 256 return await this.getSubkey(32, auth ? 'AES256AUTH' : 'AES256', 'sha256') } else { throw new RangeError('unknown type: ' + type) } } module.exports.getSymmetricKey = getSymmetricKey /** * Create an asymmetric sub-key pair of specified type * * @example * // setup multi-factor derived key * const key = await mfkdf.setup.key([ await mfkdf.setup.factors.password('password') ]) * * // get 16-byte RSA1024 sub-key * const subkey = await key.getAsymmetricKeyPair('rsa1024') // -> { privateKey: Uint8Array, publicKey: Uint8Array } * * @param {string} [type='rsa3072'] - Type of key to generate; ed25519, rsa1024, rsa2048, or rsa3072 * @param {boolean} [auth=false] - Whether this is being used for authentication * @returns {Object} Public key (spki-der encoded) and private key (pkcs8-der encoded) * @author Vivek Nair (https://nair.me) <[email protected]> * @since 0.11.0 * @memberOf MFKDFDerivedKey * @async */ async function getAsymmetricKeyPair (type = 'rsa3072', auth = false) { type = type.toLowerCase() const format = { privateKeyFormat: 'pkcs8-der', publicKeyFormat: 'spki-der' } if (type === 'ed25519') { // ed25519 const material = await this.getSubkey(32, auth ? 'ED25519AUTH' : 'ED25519', 'sha256') return await getKeyPairFromSeed(material, { id: 'ed25519' }, format) } else if (type === 'rsa1024') { // RSA 1024 const material = await this.getSubkey(32, auth ? 'RSA1024AUTH' : 'RSA1024', 'sha256') return await getKeyPairFromSeed(material, { id: 'rsa', modulusLength: 1024 }, format) } else if (type === 'rsa2048') { // RSA 2048 const material = await this.getSubkey(32, auth ? 'RSA2048AUTH' : 'RSA2048', 'sha256') return await getKeyPairFromSeed(material, { id: 'rsa', modulusLength: 2048 }, format) } else if (type === 'rsa3072') { // RSA 3072 const material = await this.getSubkey(48, auth ? 'RSA3072AUTH' : 'RSA3072', 'sha256') return await getKeyPairFromSeed(material, { id: 'rsa', modulusLength: 3072 }, format) } else { throw new RangeError('unknown type: ' + type) } } module.exports.getAsymmetricKeyPair = getAsymmetricKeyPair /** * Sign a message with this key * * @example * // setup multi-factor derived key * const key = await mfkdf.setup.key([ await mfkdf.setup.factors.password('password') ]) * * // sign message using RSA-1024 * const signature = await key.sign('hello world', 'rsa1024') * * // verify signature using RSA-1024 * const valid = await key.verify('hello world', signature, 'rsa1024') // -> true * * @param {string|Buffer} message - The message to sign * @param {string} [method='rsa3072'] - Signature method to use; rsa1024, rsa2048, or rsa3072 * @param {boolean} [auth=false] - Whether this is being used for authentication * @returns {Buffer} The signed message * @author Vivek Nair (https://nair.me) <[email protected]> * @since 0.11.0 * @memberOf MFKDFDerivedKey * @async */ async function sign (message, method = 'rsa3072', auth = false) { if (typeof message === 'string') message = Buffer.from(message) if (!(Buffer.isBuffer(message))) throw new TypeError('message must be a buffer') method = method.toLowerCase() const key = await this.getAsymmetricKeyPair(method, auth) const cryptoKey = await subtle.importKey('pkcs8', key.privateKey, { name: 'RSASSA-PKCS1-v1_5', hash: 'SHA-256' }, false, ['sign']) const signature = await subtle.sign({ name: 'RSASSA-PKCS1-v1_5' }, cryptoKey, message) return Buffer.from(signature) } module.exports.sign = sign /** * Verify a message signed with this key * * @example * // setup multi-factor derived key * const key = await mfkdf.setup.key([ await mfkdf.setup.factors.password('password') ]) * * // sign message using RSA-1024 * const signature = await key.sign('hello world', 'rsa1024') * * // verify signature using RSA-1024 * const valid = await key.verify('hello world', signature, 'rsa1024') // -> true * * @param {string|Buffer} message - The message this signature corresponds to * @param {Buffer} signature - The signature to verify * @param {string} [method='rsa3072'] - Signature method to use; rsa1024, rsa2048, or rsa3072 * @returns {boolean} Whether the signature is valid * @author Vivek Nair (https://nair.me) <[email protected]> * @since 0.11.0 * @memberOf MFKDFDerivedKey * @async */ async function verify (message, signature, method = 'rsa3072') { if (typeof message === 'string') message = Buffer.from(message) if (!(Buffer.isBuffer(message))) throw new TypeError('message must be a buffer') method = method.toLowerCase() const key = await this.getAsymmetricKeyPair(method) const cryptoKey = await subtle.importKey('spki', key.publicKey, { name: 'RSASSA-PKCS1-v1_5', hash: 'SHA-256' }, false, ['verify']) return await subtle.verify({ name: 'RSASSA-PKCS1-v1_5' }, cryptoKey, signature, message) } module.exports.verify = verify /** * Encrypt a message with this key * * Note: DES is not supported on Node.js v18 and later * * @example * // setup multi-factor derived key * const key = await mfkdf.setup.key([ await mfkdf.setup.factors.password('password') ]) * * // encrypt message using 3DES * const encrypted = await key.encrypt('hello world', '3des') * * // decrypt message using 3DES * const decrypted = await key.decrypt(encrypted, '3des') * decrypted.toString() // -> hello world * * @param {string|Buffer} message - The message to encrypt * @param {string} [method='aes256'] - Encryption method to use; rsa1024, rsa2048, des, 3des, aes128, aes192, or aes256 * @param {string} [mode='CBC'] - Encryption mode to use; ECB, CFB, OFB, GCM, CTR, or CBC * @param {boolean} [auth=false] - Whether this is being used for authentication * @returns {Buffer} The encrypted message * @author Vivek Nair (https://nair.me) <[email protected]> * @since 0.10.0 * @memberOf MFKDFDerivedKey * @async */ async function encrypt (message, method = 'aes256', mode = 'CBC', auth = false) { if (typeof message === 'string') message = Buffer.from(message) if (!(Buffer.isBuffer(message))) throw new TypeError('message must be a buffer') method = method.toLowerCase() mode = mode.toUpperCase() const key = (method === 'rsa1024' || method === 'rsa2048') ? await this.getAsymmetricKeyPair(method, auth) : await this.getSymmetricKey(method, auth) let cipher let iv if (method === 'rsa1024') { // RSA 1024 const cryptoKey = await subtle.importKey('spki', key.publicKey, { name: 'RSA-OAEP', hash: 'SHA-256' }, false, ['encrypt']) const ct = await subtle.encrypt({ name: 'RSA-OAEP' }, cryptoKey, message) return Buffer.from(ct) } else if (method === 'rsa2048') { // RSA 2048 const cryptoKey = await subtle.importKey('spki', key.publicKey, { name: 'RSA-OAEP', hash: 'SHA-256' }, false, ['encrypt']) const ct = await subtle.encrypt({ name: 'RSA-OAEP' }, cryptoKey, message) return Buffer.from(ct) } else /* istanbul ignore if */ if (method === 'des') { // DES iv = (mode === 'ECB') ? Buffer.from('') : crypto.randomBytes(8) cipher = crypto.createCipheriv('DES-' + mode, key, iv) } else if (method === '3des') { // 3DES iv = (mode === 'ECB') ? Buffer.from('') : crypto.randomBytes(8) cipher = crypto.createCipheriv('DES-EDE3-' + mode, key, iv) } else if (method === 'aes128') { // AES 128 iv = (mode === 'ECB') ? Buffer.from('') : crypto.randomBytes(16) cipher = crypto.createCipheriv('AES-128-' + mode, key, iv) } else if (method === 'aes192') { // AES 192 iv = (mode === 'ECB') ? Buffer.from('') : crypto.randomBytes(16) cipher = crypto.createCipheriv('AES-192-' + mode, key, iv) } else { // AES 256 iv = (mode === 'ECB') ? Buffer.from('') : crypto.randomBytes(16) cipher = crypto.createCipheriv('AES-256-' + mode, key, iv) } return Buffer.concat([iv, cipher.update(message), cipher.final()]) } module.exports.encrypt = encrypt /** * Decrypt a message with this key * * Note: DES is not supported on Node.js v18 and later * * @example * // setup multi-factor derived key * const key = await mfkdf.setup.key([ await mfkdf.setup.factors.password('password') ]) * * // encrypt message using 3DES * const encrypted = await key.encrypt('hello world', '3des') * * // decrypt message using 3DES * const decrypted = await key.decrypt(encrypted, '3des') * decrypted.toString() // -> hello world * * @param {Buffer} message - The message to decrypt * @param {string} [method='aes256'] - Decryption method to use; des, 3des, aes128, aes192, or aes256 * @param {string} [mode='CBC'] - Decryption mode to use; ECB, CFB, OFB, GCM, CTR, or CBC * @returns {Buffer} The decrypted message * @author Vivek Nair (https://nair.me) <[email protected]> * @since 0.10.0 * @memberOf MFKDFDerivedKey * @async */ async function decrypt (message, method = 'aes256', mode = 'CBC') { if (!(Buffer.isBuffer(message))) throw new TypeError('message must be a buffer') method = method.toLowerCase() mode = mode.toUpperCase() const key = (method === 'rsa1024' || method === 'rsa2048') ? await this.getAsymmetricKeyPair(method) : await this.getSymmetricKey(method) let decipher let iv let ct if (method === 'rsa1024') { // RSA 1024 const cryptoKey = await subtle.importKey('pkcs8', key.privateKey, { name: 'RSA-OAEP', hash: 'SHA-256' }, false, ['decrypt']) const ct = await subtle.decrypt({ name: 'RSA-OAEP' }, cryptoKey, message) return Buffer.from(ct) } else if (method === 'rsa2048') { // RSA 2048 const cryptoKey = await subtle.importKey('pkcs8', key.privateKey, { name: 'RSA-OAEP', hash: 'SHA-256' }, false, ['decrypt']) const ct = await subtle.decrypt({ name: 'RSA-OAEP' }, cryptoKey, message) return Buffer.from(ct) } else /* istanbul ignore if */ if (method === 'des') { // DES iv = (mode === 'ECB') ? '' : message.subarray(0, 8) ct = (mode === 'ECB') ? message : message.subarray(8) decipher = crypto.createDecipheriv('DES-' + mode, key, iv) } else if (method === '3des') { // 3DES iv = (mode === 'ECB') ? '' : message.subarray(0, 8) ct = (mode === 'ECB') ? message : message.subarray(8) decipher = crypto.createDecipheriv('DES-EDE3-' + mode, key, iv) } else if (method === 'aes128') { // AES 128 iv = (mode === 'ECB') ? '' : message.subarray(0, 16) ct = (mode === 'ECB') ? message : message.subarray(16) decipher = crypto.createDecipheriv('AES-128-' + mode, key, iv) } else if (method === 'aes192') { // AES 192 iv = (mode === 'ECB') ? '' : message.subarray(0, 16) ct = (mode === 'ECB') ? message : message.subarray(16) decipher = crypto.createDecipheriv('AES-192-' + mode, key, iv) } else { // AES 256 iv = (mode === 'ECB') ? '' : message.subarray(0, 16) ct = (mode === 'ECB') ? message : message.subarray(16) decipher = crypto.createDecipheriv('AES-256-' + mode, key, iv) } // decipher.setAutoPadding(false); return Buffer.concat([decipher.update(ct), decipher.final()]) } module.exports.decrypt = decrypt |