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const {
FunctionPrototypeCall,
ObjectDefineProperty,
SafeArrayIterator,
} = primordials;
const {
DhKeyPairGenJob,
DsaKeyPairGenJob,
EcKeyPairGenJob,
NidKeyPairGenJob,
RsaKeyPairGenJob,
SecretKeyGenJob,
kCryptoJobAsync,
kCryptoJobSync,
kKeyVariantRSA_PSS,
kKeyVariantRSA_SSA_PKCS1_v1_5,
EVP_PKEY_ED25519,
EVP_PKEY_ED448,
EVP_PKEY_X25519,
EVP_PKEY_X448,
OPENSSL_EC_NAMED_CURVE,
OPENSSL_EC_EXPLICIT_CURVE,
} = internalBinding('crypto');
const {
PublicKeyObject,
PrivateKeyObject,
SecretKeyObject,
parsePublicKeyEncoding,
parsePrivateKeyEncoding,
} = require('internal/crypto/keys');
const {
kAesKeyLengths,
} = require('internal/crypto/util');
const {
customPromisifyArgs,
kEmptyObject,
} = require('internal/util');
const {
validateFunction,
validateBuffer,
validateString,
validateInteger,
validateObject,
validateOneOf,
validateInt32,
validateUint32,
} = require('internal/validators');
const {
codes: {
ERR_INCOMPATIBLE_OPTION_PAIR,
ERR_INVALID_ARG_VALUE,
ERR_MISSING_OPTION,
}
} = require('internal/errors');
const { isArrayBufferView } = require('internal/util/types');
const { getOptionValue } = require('internal/options');
function isJwk(obj) {
return obj != null && obj.kty !== undefined;
}
function wrapKey(key, ctor) {
if (typeof key === 'string' ||
isArrayBufferView(key) ||
isJwk(key))
return key;
return new ctor(key);
}
function generateKeyPair(type, options, callback) {
if (typeof options === 'function') {
callback = options;
options = undefined;
}
validateFunction(callback, 'callback');
const job = createJob(kCryptoJobAsync, type, options);
job.ondone = (error, result) => {
if (error) return FunctionPrototypeCall(callback, job, error);
// If no encoding was chosen, return key objects instead.
let { 0: pubkey, 1: privkey } = result;
pubkey = wrapKey(pubkey, PublicKeyObject);
privkey = wrapKey(privkey, PrivateKeyObject);
FunctionPrototypeCall(callback, job, null, pubkey, privkey);
};
job.run();
}
ObjectDefineProperty(generateKeyPair, customPromisifyArgs, {
__proto__: null,
value: ['publicKey', 'privateKey'],
enumerable: false
});
function generateKeyPairSync(type, options) {
return handleError(createJob(kCryptoJobSync, type, options).run());
}
function handleError(ret) {
if (ret == null)
return; // async
const { 0: err, 1: keys } = ret;
if (err !== undefined)
throw err;
const { 0: publicKey, 1: privateKey } = keys;
// If no encoding was chosen, return key objects instead.
return {
publicKey: wrapKey(publicKey, PublicKeyObject),
privateKey: wrapKey(privateKey, PrivateKeyObject)
};
}
function parseKeyEncoding(keyType, options = kEmptyObject) {
const { publicKeyEncoding, privateKeyEncoding } = options;
let publicFormat, publicType;
if (publicKeyEncoding == null) {
publicFormat = publicType = undefined;
} else if (typeof publicKeyEncoding === 'object') {
({
format: publicFormat,
type: publicType
} = parsePublicKeyEncoding(publicKeyEncoding, keyType,
'publicKeyEncoding'));
} else {
throw new ERR_INVALID_ARG_VALUE('options.publicKeyEncoding',
publicKeyEncoding);
}
let privateFormat, privateType, cipher, passphrase;
if (privateKeyEncoding == null) {
privateFormat = privateType = undefined;
} else if (typeof privateKeyEncoding === 'object') {
({
format: privateFormat,
type: privateType,
cipher,
passphrase
} = parsePrivateKeyEncoding(privateKeyEncoding, keyType,
'privateKeyEncoding'));
} else {
throw new ERR_INVALID_ARG_VALUE('options.privateKeyEncoding',
privateKeyEncoding);
}
return [
publicFormat,
publicType,
privateFormat,
privateType,
cipher,
passphrase,
];
}
function createJob(mode, type, options) {
validateString(type, 'type');
const encoding = new SafeArrayIterator(parseKeyEncoding(type, options));
if (options !== undefined)
validateObject(options, 'options');
switch (type) {
case 'rsa':
case 'rsa-pss':
{
validateObject(options, 'options');
const { modulusLength } = options;
validateUint32(modulusLength, 'options.modulusLength');
let { publicExponent } = options;
if (publicExponent == null) {
publicExponent = 0x10001;
} else {
validateUint32(publicExponent, 'options.publicExponent');
}
if (type === 'rsa') {
return new RsaKeyPairGenJob(
mode,
kKeyVariantRSA_SSA_PKCS1_v1_5, // Used also for RSA-OAEP
modulusLength,
publicExponent,
...encoding);
}
const {
hash, mgf1Hash, hashAlgorithm, mgf1HashAlgorithm, saltLength
} = options;
const pendingDeprecation = getOptionValue('--pending-deprecation');
if (saltLength !== undefined)
validateInt32(saltLength, 'options.saltLength', 0);
if (hashAlgorithm !== undefined)
validateString(hashAlgorithm, 'options.hashAlgorithm');
if (mgf1HashAlgorithm !== undefined)
validateString(mgf1HashAlgorithm, 'options.mgf1HashAlgorithm');
if (hash !== undefined) {
pendingDeprecation && process.emitWarning(
'"options.hash" is deprecated, ' +
'use "options.hashAlgorithm" instead.',
'DeprecationWarning',
'DEP0154');
validateString(hash, 'options.hash');
if (hashAlgorithm && hash !== hashAlgorithm) {
throw new ERR_INVALID_ARG_VALUE('options.hash', hash);
}
}
if (mgf1Hash !== undefined) {
pendingDeprecation && process.emitWarning(
'"options.mgf1Hash" is deprecated, ' +
'use "options.mgf1HashAlgorithm" instead.',
'DeprecationWarning',
'DEP0154');
validateString(mgf1Hash, 'options.mgf1Hash');
if (mgf1HashAlgorithm && mgf1Hash !== mgf1HashAlgorithm) {
throw new ERR_INVALID_ARG_VALUE('options.mgf1Hash', mgf1Hash);
}
}
return new RsaKeyPairGenJob(
mode,
kKeyVariantRSA_PSS,
modulusLength,
publicExponent,
hashAlgorithm || hash,
mgf1HashAlgorithm || mgf1Hash,
saltLength,
...encoding);
}
case 'dsa':
{
validateObject(options, 'options');
const { modulusLength } = options;
validateUint32(modulusLength, 'options.modulusLength');
let { divisorLength } = options;
if (divisorLength == null) {
divisorLength = -1;
} else
validateInt32(divisorLength, 'options.divisorLength', 0);
return new DsaKeyPairGenJob(
mode,
modulusLength,
divisorLength,
...encoding);
}
case 'ec':
{
validateObject(options, 'options');
const { namedCurve } = options;
validateString(namedCurve, 'options.namedCurve');
let { paramEncoding } = options;
if (paramEncoding == null || paramEncoding === 'named')
paramEncoding = OPENSSL_EC_NAMED_CURVE;
else if (paramEncoding === 'explicit')
paramEncoding = OPENSSL_EC_EXPLICIT_CURVE;
else
throw new ERR_INVALID_ARG_VALUE('options.paramEncoding', paramEncoding);
return new EcKeyPairGenJob(
mode,
namedCurve,
paramEncoding,
...encoding);
}
case 'ed25519':
case 'ed448':
case 'x25519':
case 'x448':
{
let id;
switch (type) {
case 'ed25519':
id = EVP_PKEY_ED25519;
break;
case 'ed448':
id = EVP_PKEY_ED448;
break;
case 'x25519':
id = EVP_PKEY_X25519;
break;
case 'x448':
id = EVP_PKEY_X448;
break;
}
return new NidKeyPairGenJob(mode, id, ...encoding);
}
case 'dh':
{
validateObject(options, 'options');
const { group, primeLength, prime, generator } = options;
if (group != null) {
if (prime != null)
throw new ERR_INCOMPATIBLE_OPTION_PAIR('group', 'prime');
if (primeLength != null)
throw new ERR_INCOMPATIBLE_OPTION_PAIR('group', 'primeLength');
if (generator != null)
throw new ERR_INCOMPATIBLE_OPTION_PAIR('group', 'generator');
validateString(group, 'options.group');
return new DhKeyPairGenJob(mode, group, ...encoding);
}
if (prime != null) {
if (primeLength != null)
throw new ERR_INCOMPATIBLE_OPTION_PAIR('prime', 'primeLength');
validateBuffer(prime, 'options.prime');
} else if (primeLength != null) {
validateInt32(primeLength, 'options.primeLength', 0);
} else {
throw new ERR_MISSING_OPTION(
'At least one of the group, prime, or primeLength options');
}
if (generator != null) {
validateInt32(generator, 'options.generator', 0);
}
return new DhKeyPairGenJob(
mode,
prime != null ? prime : primeLength,
generator == null ? 2 : generator,
...encoding);
}
default:
// Fall through
}
throw new ERR_INVALID_ARG_VALUE('type', type, 'must be a supported key type');
}
// Symmetric Key Generation
function generateKeyJob(mode, keyType, options) {
validateString(keyType, 'type');
validateObject(options, 'options');
const { length } = options;
switch (keyType) {
case 'hmac':
validateInteger(length, 'options.length', 8, 2 ** 31 - 1);
break;
case 'aes':
validateOneOf(length, 'options.length', kAesKeyLengths);
break;
default:
throw new ERR_INVALID_ARG_VALUE(
'type',
keyType,
'must be a supported key type');
}
return new SecretKeyGenJob(mode, length);
}
function handleGenerateKeyError(ret) {
if (ret === undefined)
return; // async
const { 0: err, 1: key } = ret;
if (err !== undefined)
throw err;
return wrapKey(key, SecretKeyObject);
}
function generateKey(type, options, callback) {
if (typeof options === 'function') {
callback = options;
options = undefined;
}
validateFunction(callback, 'callback');
const job = generateKeyJob(kCryptoJobAsync, type, options);
job.ondone = (error, key) => {
if (error) return FunctionPrototypeCall(callback, job, error);
FunctionPrototypeCall(callback, job, null, wrapKey(key, SecretKeyObject));
};
handleGenerateKeyError(job.run());
}
function generateKeySync(type, options) {
return handleGenerateKeyError(
generateKeyJob(kCryptoJobSync, type, options).run());
}
module.exports = {
generateKeyPair,
generateKeyPairSync,
generateKey,
generateKeySync,
};
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