Press n or j to go to the next uncovered block, b, p or k for the previous block.
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const { FunctionPrototypeCall, ObjectSetPrototypeOf, ReflectApply, } = primordials; const { codes: { ERR_CRYPTO_SIGN_KEY_REQUIRED, ERR_INVALID_ARG_TYPE, ERR_INVALID_ARG_VALUE, } } = require('internal/errors'); const { validateFunction, validateEncoding, validateString, } = require('internal/validators'); const { Sign: _Sign, SignJob, Verify: _Verify, kCryptoJobAsync, kCryptoJobSync, kSigEncDER, kSigEncP1363, kSignJobModeSign, kSignJobModeVerify, } = internalBinding('crypto'); const { getArrayBufferOrView, getDefaultEncoding, kHandle, } = require('internal/crypto/util'); const { preparePrivateKey, preparePublicOrPrivateKey, } = require('internal/crypto/keys'); const { Writable } = require('stream'); const { Buffer } = require('buffer'); const { isArrayBufferView, } = require('internal/util/types'); function Sign(algorithm, options) { if (!(this instanceof Sign)) return new Sign(algorithm, options); validateString(algorithm, 'algorithm'); this[kHandle] = new _Sign(); this[kHandle].init(algorithm); ReflectApply(Writable, this, [options]); } ObjectSetPrototypeOf(Sign.prototype, Writable.prototype); ObjectSetPrototypeOf(Sign, Writable); Sign.prototype._write = function _write(chunk, encoding, callback) { this.update(chunk, encoding); callback(); }; Sign.prototype.update = function update(data, encoding) { encoding = encoding || getDefaultEncoding(); if (typeof data === 'string') { validateEncoding(data, encoding); } else if (!isArrayBufferView(data)) { throw new ERR_INVALID_ARG_TYPE( 'data', ['string', 'Buffer', 'TypedArray', 'DataView'], data); } this[kHandle].update(data, encoding); return this; }; function getPadding(options) { return getIntOption('padding', options); } function getSaltLength(options) { return getIntOption('saltLength', options); } function getDSASignatureEncoding(options) { if (typeof options === 'object') { const { dsaEncoding = 'der' } = options; if (dsaEncoding === 'der') return kSigEncDER; else if (dsaEncoding === 'ieee-p1363') return kSigEncP1363; throw new ERR_INVALID_ARG_VALUE('options.dsaEncoding', dsaEncoding); } return kSigEncDER; } function getIntOption(name, options) { const value = options[name]; if (value !== undefined) { if (value === value >> 0) { return value; } throw new ERR_INVALID_ARG_VALUE(`options.${name}`, value); } return undefined; } Sign.prototype.sign = function sign(options, encoding) { if (!options) throw new ERR_CRYPTO_SIGN_KEY_REQUIRED(); const { data, format, type, passphrase } = preparePrivateKey(options, true); // Options specific to RSA const rsaPadding = getPadding(options); const pssSaltLength = getSaltLength(options); // Options specific to (EC)DSA const dsaSigEnc = getDSASignatureEncoding(options); const ret = this[kHandle].sign(data, format, type, passphrase, rsaPadding, pssSaltLength, dsaSigEnc); encoding = encoding || getDefaultEncoding(); if (encoding && encoding !== 'buffer') return ret.toString(encoding); return ret; }; function signOneShot(algorithm, data, key, callback) { if (algorithm != null) validateString(algorithm, 'algorithm'); if (callback !== undefined) validateFunction(callback, 'callback'); data = getArrayBufferOrView(data, 'data'); if (!key) throw new ERR_CRYPTO_SIGN_KEY_REQUIRED(); // Options specific to RSA const rsaPadding = getPadding(key); const pssSaltLength = getSaltLength(key); // Options specific to (EC)DSA const dsaSigEnc = getDSASignatureEncoding(key); const { data: keyData, format: keyFormat, type: keyType, passphrase: keyPassphrase } = preparePrivateKey(key); const job = new SignJob( callback ? kCryptoJobAsync : kCryptoJobSync, kSignJobModeSign, keyData, keyFormat, keyType, keyPassphrase, data, algorithm, pssSaltLength, rsaPadding, dsaSigEnc); if (!callback) { const { 0: err, 1: signature } = job.run(); if (err !== undefined) throw err; return Buffer.from(signature); } job.ondone = (error, signature) => { if (error) return FunctionPrototypeCall(callback, job, error); FunctionPrototypeCall(callback, job, null, Buffer.from(signature)); }; job.run(); } function Verify(algorithm, options) { if (!(this instanceof Verify)) return new Verify(algorithm, options); validateString(algorithm, 'algorithm'); this[kHandle] = new _Verify(); this[kHandle].init(algorithm); ReflectApply(Writable, this, [options]); } ObjectSetPrototypeOf(Verify.prototype, Writable.prototype); ObjectSetPrototypeOf(Verify, Writable); Verify.prototype._write = Sign.prototype._write; Verify.prototype.update = Sign.prototype.update; Verify.prototype.verify = function verify(options, signature, sigEncoding) { const { data, format, type, passphrase } = preparePublicOrPrivateKey(options, true); sigEncoding = sigEncoding || getDefaultEncoding(); // Options specific to RSA const rsaPadding = getPadding(options); const pssSaltLength = getSaltLength(options); // Options specific to (EC)DSA const dsaSigEnc = getDSASignatureEncoding(options); signature = getArrayBufferOrView(signature, 'signature', sigEncoding); return this[kHandle].verify(data, format, type, passphrase, signature, rsaPadding, pssSaltLength, dsaSigEnc); }; function verifyOneShot(algorithm, data, key, signature, callback) { if (algorithm != null) validateString(algorithm, 'algorithm'); if (callback !== undefined) validateFunction(callback, 'callback'); data = getArrayBufferOrView(data, 'data'); if (!isArrayBufferView(data)) { throw new ERR_INVALID_ARG_TYPE( 'data', ['Buffer', 'TypedArray', 'DataView'], data ); } // Options specific to RSA const rsaPadding = getPadding(key); const pssSaltLength = getSaltLength(key); // Options specific to (EC)DSA const dsaSigEnc = getDSASignatureEncoding(key); if (!isArrayBufferView(signature)) { throw new ERR_INVALID_ARG_TYPE( 'signature', ['Buffer', 'TypedArray', 'DataView'], signature ); } const { data: keyData, format: keyFormat, type: keyType, passphrase: keyPassphrase } = preparePublicOrPrivateKey(key); const job = new SignJob( callback ? kCryptoJobAsync : kCryptoJobSync, kSignJobModeVerify, keyData, keyFormat, keyType, keyPassphrase, data, algorithm, pssSaltLength, rsaPadding, dsaSigEnc, signature); if (!callback) { const { 0: err, 1: result } = job.run(); if (err !== undefined) throw err; return result; } job.ondone = (error, result) => { if (error) return FunctionPrototypeCall(callback, job, error); FunctionPrototypeCall(callback, job, null, result); }; job.run(); } module.exports = { Sign, signOneShot, Verify, verifyOneShot, }; |