Crypto subtle encrypt

SubtleCrypto.encrypt() Returns a Promise that fufills with the encrypted data corresponding to the clear text, algorithm, and key given as parameters. SubtleCrypto.decrypt( Die SubtleCrypto.encrypt() Methode gibt eine Promise der verschlüsselten Daten zurück, die den als Parameter angegebenen plaintext, Algorithmus und Schlüssel entsprechen.. Syntax var result = crypto.subtle.encrypt(algorithm, key, data); Parameter . algorithm ist ein Objekt, das die zu verwendende Verschlüsselungsfunktion und ihre Parameter angibt; Wenn keine Parameter vorhanden sind, kann. Frontend: Requests the value. Server: Return string. Frontend: Decode string back to ArrayBuffer and provide to window.crypto.subtle.decrypt. I've tried using TextEncoder and TextDecoder and have found that it does not work and am getting the following error The decrypt () method of the SubtleCrypto interface decrypts some encrypted data. It takes as arguments a key to decrypt with, some optional extra parameters, and the data to decrypt (also known as ciphertext). It returns a Promise which will be fulfilled with the decrypted data (also known as plaintext)

1. There are only two minor flaws. First, the return statements are missing in importPublicKeyAndEncrypt () and in importPrivateKeyAndDecrypt () (although the latter is not necessary for the current code snippet). Also, it is necessary to wait for the promise of importPublicKeyAndEncrypt () before importPrivateKeyAndDecrypt () can be called 1 Answer1. Active Oldest Votes. 6. I found an answer here. It turns out that IE 11 returns an event rather than directly returning the result. As such, my example code becomes: window.msCrypto.subtle.generateKey ( { name: 'AES-CBC', length: 256 }, false, ['encrypt'] ) .oncomplete = function (e) { var key = e.target.result; try { window

window. crypto. subtle. encrypt ({name: RSA-OAEP, //label: Uint8Array([...]) //optional}, publicKey, //from generateKey or importKey above data //ArrayBuffer of data you want to encrypt). then (function (encrypted) {//returns an ArrayBuffer containing the encrypted data console. log (new Uint8Array (encrypted));}). catch (function (err) {console. error (err);}) extractable is a Boolean indicating whether it will be possible to export the key using SubtleCrypto.exportKey () or SubtleCrypto.wrapKey (). keyUsages is an Array indicating what can be done with the newly generated key. Possible values for array elements are: encrypt: The key may be used to encrypt messages Before encryption, we encode the text to a Uint8Array, since that's what the encrypt function takes. We encrypt that array using window.crypto.subtle.encrypt , and then we turn its ArrayBuffer output back to Uint8Array , which we then turn to string and encode it to Base64 RSA can not directly encrypt large data. You need to generate a random key for a symmetric cipher (secure random), encrypt the large data with this key using a secure mode (e.g GCM). encrypt the key with your RSA public key, prepend encrypted key to encrypted data. store

SubtleCrypto - Web APIs MD

  1. const key1 = await crypto.subtle.importKey('raw', enc.encode(pw), 'PBKDF2', false, ['deriveKey']); // create the second key const key2 = await crypto.subtle.deriveKey({name: PBKDF2
  2. Crypto. Best JavaScript code snippets using builtins. Crypto.subtle (Showing top 15 results out of 315) /** * Produces a SHA-256 hash of an input string. The output of this * implementation <i>should</i> match the output of Node.js' built-in * SHA-256 hash (<code>crypto</code> module).<br/> * Uses the <a href=https://www.w3
  3. I'm trying to encrypt something in a webextension with SubtleCrypto and decrypt it in flutter with cryptography. I want to use a password to encrypt a message, send it to a app and decrypt it with the same password. For this I use AES GCM with pbkdf
  4. 'use strict'; var crypto = window.crypto; // You can use crypto.generateKey or crypto.importKey, // but since I'm always either going to share, store, or receive a key // I don't see the point of using 'generateKey' directly function generateKey(rawKey) { var usages = ['encrypt', 'decrypt']; var extractable = false; return crypto.subtle.importKey( 'raw' , rawKey , { name: 'AES-CBC' } , extractable , usages );
  5. baseKey is a CryptoKey representing the input to the derivation algorithm. If algorithm is ECDH, then this will be the ECDH private key. Otherwise it will be the initial key material for the derivation function: for example, for PBKDF2 it might be a password, imported as a CryptoKey using SubtleCrypto.importKey ()
  6. return window. crypto. subtle. sign (signAlgorithm, key, textToArrayBuffer (data))} function testVerifySig (pub, sig, data) {return crypto. subtle. verify (signAlgorithm, pub, sig, data)} function encryptData (vector, key, data) {return crypto. subtle. encrypt ({name: RSA-OAEP, iv: vector}, key, textToArrayBuffer (data))} function decryptData (vector, key, data) {return crypto. subtle. decrypt
  7. Uses the SubtleCrypto interface of the Web Cryptography API to encrypt and decrypt text using AES-GCM (AES Galois counter mode)

DOM SubtleCrypto.encrypt - Gelös

In this tutorial I will show you how create a symmetric key using a passphrase and then encrypt or decrypt data using that generated key. Converting String to Array Buffer and Array Buffer to String. To encrypt text or binary data you first need to convert it to an array buffer type so that Web Cryptography API can encrypt it return await crypto. subtle. importKey ('jwk', jwk, {name: AES-GCM}, false, ['encrypt', 'decrypt']);} async function encrypt (string, key) {let encoded = new TextEncoder (). encode (string); let iv = crypto. getRandomValues (new Uint8Array (12)); let encrypted = await crypto. subtle. encrypt ({name: AES-GCM, iv: iv}, key, encoded); return encrypted = {encrypted: encrypted, iv: iv}; Web Crypto API functions are generally more generic. For example, all symmetric and asymmetric encryption are handled through crypto.subtle.encrypt, whereas Node.js provides separate functions crypto.createCipheriv, crypto.publicEncrypt, and crypto.privateEncrypt, depending on which kind of encryption needs to be performed To encrypt text or binary data you first need to convert it to an array buffer type so that Web Cryptography API can encrypt it. Here is code to convert a string to an array buffer. function convertStringToArrayBufferView ( str) {. var bytes = new Uint8Array ( str. length)

javascript - crypto

The SubtleCrypto.encrypt() method returns a Promise of the encrypted data corresponding to the cleartext, algorithm and key given as parameters.. Syntax var result = crypto.encrypt(algo, key, cleartext); Parameters. algo is an object defining the encryption function to use or a DOMString, the latter being a shorthand for {name: algo}.Supported values are window.crypto.subtle.encrypt({ name: RSA-OAEP, iv: iv, }, publicKey, //from generateKey or importKey above asciiToUint8Array(plainText) //ArrayBuffer of data you want to encrypt ) .then(function(encrypted) { //returns an ArrayBuffer containing the encrypted data document.getElementById(cipherText).value = bytesToHexString(encrypted); document.getElementById(salt).value = bytesToHexString(iv); }) .catch(function(err) { console.error(err); }) The result of crypto.subtle.encrypt will be an ArrayBuffer, and likely needs to be converted into a different data type or format to store or transmit the encrypted data. Usage patterns correlate to best practices in cryptography. Unlike many other cryptographic libraries, the Web Crypto API enforces some usage patterns of keys that correlate to known best practices in cryptography. Keys can.

window.crypto is an asynchronous API. window.crypto.subtle is the most important property of window.crypto object. window.crypto.subtle object exposes functions for hashing, encryption, decryption, signing, verifying, exporting key, importing key and generating keys. Here is the window.crypto.subtle interfac You can use crypto.subtle.exportKey to convert the key into many different exportable formats and then export it. Similarly you can use crypto.subtle.importKey to convert the exported key into an key object for use. Here is an sample code showing how to import and export the generated ke Encrypting is done using the encrypt method of the crypto's subtle object, which requires the following parameters: Algorithm: An object describing the encryption's function algorithm.; Key: ACryptoKey object containing the key used for the encryption.; Data: An arrayBuffer containing the data to be encrypted.; We now have everything we need to encrypt the text

SubtleCrypto.decrypt() - Web APIs MD

Der in Ihrer Frage enthaltene Code ist korrekt, sodass das Problem im versteckten Teil liegt. Ich habe gerade window.crypto.subtle.generateKeyIhren Code hinzugefügt , um die RSA-OAEP-Schlüssel zu generieren und funktioniert. Bitte schauen Sie sich das vollständige Beispiel a The Crypto interface represents an interface to general purpose cryptographic functionality including a cryptographically strong pseudo-random number generator seeded with truly random values.. The AES Encryption/Decryption Mode. The AES-CTR algorithm identifier is used to perform encryption and decryption using AES in Counter mode.. The AES-CBC algorithm identifier is used to perform. return window.crypto.subtle.encrypt({name: RSA-OAEP}, publicKey, exportedKey); } Now for the nasty part: packaging this up to provide to the recipient, who will eventually decrypt it all. At a minimum, the package has to contain the encrypted session key, iv, and ciphertext. But it should also have a lot more in it: The symmetric algorithm that was used to create the ciphertext. The public. // firstly we need to importKey window. crypto. subtle. importKey (//the format that we are input raw , //the input in the properly format new TextEncoder () . encode ( my password ), //the kind of key (in that case it's a password to derive a key!) {name: PBKDF2 }, //if I permit that this material could be exported false, //what I permit to be processed against that (password to. The Web crypto api describes using Elliptic Curve Diffie-Hellman (ECDH) for key generation and key agreement, as specified by RFC6090. The recognized algorithm name for this algorithm is ECDH

Web crypto export private key. SubtleCrypto.exportKey(), publicKey); const privateKey = await crypto.subtle.exportKey(jwk, keyPair. privateKey);. Now that we have exported our keypair as JWKs, we Find the key tips and tricks about importing, exporting, storing, and managing private keys in various cryptocurrency wallets The deriveKey() method of the SubtleCrypto interface can be used to derive a secret key from a master key.. It takes as arguments some initial key material, the derivation algorithm to use, and the desired properties for the key to derive. It returns a Promise which will be fulfilled with a CryptoKey object representing the new key.. It's worth noting that the three key derivation algorithms. Since we're using RSA-OAEP we have encrypt and decrypt available ['encrypt', 'decrypt']); // key will yield a key.publicKey and key.privateKey property. Enkripsi: const encryptedUri = await crypto. subtle. encrypt ({name: 'RSA-OAEP'}, key. publicKey, stringToArrayBuffer (stringToEncrypt)) console. log ('The encrypted string is', encryptedUri. Update on Web Cryptography. Jul 21, 2017. by Jiewen Tan. @alanwaketan. Cryptography is the cornerstone of information security, including various aspects such as data confidentiality, data integrity, authentication, and non-repudiation. These provide support for the fundamental technologies of today's Internet like HTTPS, DNSSEC, and VPN

javascript - JS SubtleCrypto RSA Encrypt and Decrypt

  1. sh-dv/hat.sh encrypt and decrypt files in your browser. Fast, Secure client-side File Encryption and Decryption using the web crypto api Users starred: 762Users forked:..
  2. crypto.subtle.encrypt() crypto.subtle.unwrapKey() Feature: WebCrypto algorithm CryptoAlgorithmAesCbc AES-CBC CryptoAlgorithmHmac HMAC CryptoAlgorithmRsaSsaPkcs1v1_5 RSASSA-PKCS1-v1_5 CryptoAlgorithmSha1 SHA-1 CryptoAlgorithmSha256 SHA-256 CryptoAlgorithmSha384 SHA-384 CryptoAlgorithmSha512 SHA-512 CryptoAlgorithmAesGcm AES-GCM CryptoAlgorithmRsaOaep RSA-OAEP CryptoAlgorithmAesCtr AES-CTR.
  3. So effectively we should accept IVs of length [1*8..2^64/8) = [1..2^61) bytes. The WebCrypto spec talks about a max. IV length of 2^64 bytes - that's 8 times what GCM allows. I don't think people actually use IVs of that size but the spec seems definitely wrong here. > that from ciphertexts encrypted with 0-length IVs or all-zero IVs, it is.
  4. As the shared secret is most often used to derive a symmetric key, there is window.crypto.subtle.deriveKey and deriveBits can be ommitted. deriveBits was used here to illustrate that Alice and Bob indeed agreed on a shared secret const privateKey = crypto.subtle.deriveKey({name: 'PBKDF2', hash: {name: 'SHA-256'}, iterations, salt}, key, {name: 'AES-GCM', length: 256}, false, ['encrypt.
  5. encrypt_promise = window.crypto.subtle.encrypt({name: AES-GCM, iv: vector}, key_object, convertStringToArrayBuffer(secretmessage))
  6. Bug 1711063 - Part 4: Add the ability to pass an allocation site when assembling inline allocations r?jandem Summary: For baseline allocations we still want to track the allocations made and update the AllocSite whereas for optimized code we want to ignore this entirely and use the catch-all optimzed site for tracked allocation sites. To allow this, the patch adds AllocSiteInput which can.
  7. You're right about generateKey() I saw it wrong, it's in the same function. I might be wrong about getRandomValues(), the docs doesn't specify if returns a promise so I assumed that it would work like all the other subtle encryptions and return a promise.. MDN Web Docs SubtleCrypto. The SubtleCrypto interface of the Web Crypto API provides a number of low-level cryptographic functions
Changes to the SecretKeyFactory API in Android 4

There are two consequences of this extra operation - first, reusing the same key to encrypt two equal messages will produce two entirely different ciphertexts when using different IVs; second, even if two blocks on the same message are equal, their ciphered version won't be since they will be mixed with different values before being encrypted. Also, a single bit difference on a block is. The SubtleCrypto interface of the Web Crypto API provides a number of low-level cryptographic functions. It is accessed via the Crypto.subtle properties available in a window context (Window.crypto). The Web Crypto API is an interface allowing a script to use cryptographic primitives in order to build systems using cryptography

javascript - Using SubtleCrypto in IE 11 - Stack Overflo

3. crypto.subtle.importKey(raw, new Uint8Array(192/8), {name: AES-CBC}, true, [encrypt]).catch(console.log.bind(console)) returns 192-bit AES keys are not supported What is the expected behavior? When 192-bit AES keys are not supported, crypto.subtle.importKey(raw, new Uint8Array(8), {name: AES-CBC}, true, [encrypt]).catch(console.log.bind(console)) should return: AES key data. encrypt and decrypt files in your browser. Fast, Secure client-side File Encryption and Decryption using the web crypto api. Awesome Open Source. Awesome Open Source. Hat.sh. encrypt and decrypt files in your browser. Fast, Secure client-side File Encryption and Decryption using the web crypto api . Stars. 902. License. mit. Open Issues. 0. Most Recent Commit. 2 months ago. Related Projects.

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GitHub - diafygi/webcrypto-examples: Web Cryptography API

This Web Crypto API interface provides a number of low-level cryptographic functions. It is accessed via the Crypto.subtle properties available in a window context (via Window.crypto) It is available via the Crypto.subtle properties available in a window context (via Window.crypto). Per the spec: Developers making use of the SubtleCrypto interface are expected to be aware of the security concerns associated with both the design and implementation of the various algorithms provided. The raw algorithms are provided in order to allow developers maximum flexibility in. The majority of the API is exposed through window.crypto.subtle. The word 'subtle' indicates that most of the available algorithms have subtle usage requirements that need to be fulfilled to.

Rsa verify signature - upload document & create signatures

SubtleCrypto.generateKey() - Web APIs MD

Search for packages, types, and functions. Module. Crypto. Subtle. Key. Type Web Crypto: encrypt/decrypt. This page shows the use of the encrypt() and decrypt() functions of the Web Crypto API. It contains four separate examples, one for each encryption algorithm supported: RSA-OAEP AES-CTR AES-CBC AES-GCM Each example has five components: A text box containing a message to encrypt. A representation of the ciphertext. A box that will contain the decrypted.

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End-to-End Encrypted Chat with the Web Crypto AP

  1. e the value of the content encryption key (CEK.
  2. The open source TodoMVC project implements a Todo application using popular JavaScript MV* frameworks. Some of the implementations add support for compile to
  3. r/crypto. Cryptography is the art of creating mathematical assurances for who can do what with data, including but not limited to encryption of messages such that only the key-holder can read it. Cryptography lives at an intersection of math and computer science. This subreddit covers the theory and practice of modern and *strong* cryptography.
  4. AES-GCM mode for symmetric crypto RSA-PSS should be used for digital signatures emphRSA-OAEP should be used for encryption. ECDH for Diffie-Hellman Key Exchange (Curve 25519 when added) SHA-256 for hash functions HMAC for MACs Key size 2048 for RSA, 256 for symmetric and EC crypto

rsa - Subtle Crypto Algorithm Choice - Cryptography Stack

  1. I couldn't find anywhere that had clear examples of WebCryptoAPI, so I wrote examples and made a live table with them. Pull requests welcome! RSASSA-PKCS1-v1_5. generateKey | importKey | exportKey | sign | verify. RSA-PSS. generateKey | importKey | exportKey | sign | verify. RSA-OAEP
  2. utes ago. How do I learn BouncyCastle API for.
  3. I wrote a simple algorithm to encrypt and decrypt files in Python using aes-256-cbc. from Crypto import Random from Crypto.Cipher import AES import base64 def pad(s): return s + b\0 * (AES

The Encryption-VScode plugin uses AES encryption to encrypt/decrypt the contents of the current text file. The Crypto-JS plugin is the only dependancy which gives access to the encryption module as crypto.subtle is not available within node. It's easy to install and use. Instruction window.crypto; window.crypto.getRandomValues; window.crypto.subtle. encrypt decrypt sign verify window.crypto.subtle. digest generateKey deriveKey deriveBits importKey exportKey wrapKey unwrapKey Subtle? It is named SubtleCrypto to reflect the fact that man

I'm trying to use web crypto API with IE11 and encrypt/decrypt using AES-256-GCM. Encryption works fine, but decryption with the same parameters fails, without any advice what is wrong: I know that IE11 has an older version of the web crypto API spec. Encryption/decryption with other browsers (tested Chrome and Firefox) with same parameters works Since we're using RSA-OAEP we have encrypt and decrypt available ['encrypt', 'decrypt']); // key will yield a key.publicKey and key.privateKey property. Enkripsi: const encryptedUri = await crypto. subtle. encrypt ({name: 'RSA-OAEP'}, key. publicKey, stringToArrayBuffer (stringToEncrypt)) console. log ('The encrypted string is', encryptedUri. Crypto.PublicKey package¶. In a public key cryptography system, senders and receivers do not use the same key. Instead, the system defines a key pair, with one of the keys being confidential (private) and the other not (public) const buffer = utf8Encoder.encode(password); const key = await crypto.subtle.importKey('raw', buffer, {name: 'PBKDF2'}, false, ['deriveKey']); SubtleCrypto.importKey. Code Index Add Codota to your IDE (free) How to use. importKey. function . in. SubtleCrypto. Best JavaScript code snippets using builtins.SubtleCrypto. importKey (Showing top 5 results out of 315) origin: evilmarty/encrypted. fn new_cipher( key []byte) AesCipher. new_cipher creates and returns a new AesCipher. The key argument should be the AES key, either 16, 24, or 32 bytes to select AES-128, AES-192, or AES-256

Use the generateKey() method of the SubtleCrypto interface to generate a new key (for symmetric algorithms) or key pair (for public-key algorithms).. Syntax const result = crypto.subtle.generateKey(algorithm, extractable, keyUsages); Parameters. algorithm is a dictionary object defining the type of key to generate and providing extra algorithm-specific parameters Microsoft's Always Encrypted SQL Server enables administrators to encrypt columns with RND and DET. Before this service, the database in the SQL Server was in plaintext during processing. Some applications can support a lot of fields with RND and a set of other fields with DET, thus giving a significant security increase as compared to no encryption for these fields. The service is now. 'use strict'; const encode = text => new TextEncoder().encode(text); const decode = data => new TextDecoder().decode(data); const encrypt = async (password, text. If one needs to abstract 19 // over the public key primitive, the PrivateKey type implements the 20 // Decrypter and Signer interfaces from the crypto package. 21 // 22 // The RSA operations in this package are not implemented using constant-time algorithms. 23 package rsa 24 25 import ( 26 crypto 27 crypto/rand 28 crypto/subtle 29 errors 30 hash 31 io 32 math 33 math/big 34 35.

Verschlüsselung im Web mit der Web Crypto API heise

  1. The crypto module is a wrapper for OpenSSL cryptographic functions. It supports calculating hashes, authentication with HMAC, ciphers, and more! The crypto module is mostly useful as a tool for implementing cryptographic protocols such as TLS and https.For most users, the built-in tls module and https module should more than suffice. However, for the user that only wants to use small parts of.
  2. I'm trying to use web crypto API with IE11 and encrypt/decrypt using AES-256-GCM. Encryption works fine, but decryption with the same parameters fails, without any advice what is wrong: // key: 32 bytes // iv: 12 bytes // auth: 16 bytes // data: tried 16-10000 bytes; result of previous encrypt · Hi Klaronix, I also tested it, it could not work on.
  3. js中的web加密 window.crypto.subtle只会在安全模式下有用,也就是https环境下 1. 创建摘要(硬解) 2. 创建摘要(软解) 3. 加密随机.
  4. Further, as has been pointed out by a number > of people, even strong crypto can be misused by combining the > primitives incorrectly. > > All of these reasons lead to the adoption of window.crypto.subtle, > similar to other languages (such as Go), as a clear indicator that > Care is needed, for here be dragons - a recognition of the critical > importance of quality low-level primitives.
  5. Test runner. Warning! For accurate results, please disable Firebug before running the tests. Java applet disabled

JavaScript & Node.js Examples of Crypto.subtle (builtins ..

crypto.openssl: This sub-package is This can be used to encrypt a message so that any 2 out of 3 receivers must work together to decrypt it, for example. - proof: An implementation of the general Camenisch/Stadler framework for discrete logarithm knowledge proofs. This system supports both interactive and non-interactive proofs of a wide variety of statements such as, I know the secret x. // to Encrypt()/Decrypt() the corresponding key usages may not be present // (when wrapping/unwrapping). // // An AlgorithmImplementation can also assume that crypto::EnsureOpenSSLInit() // will be called before any of its methods are invoked (except the // constructor). class AlgorithmImplementation {public: virtual ~ AlgorithmImplementation (); // This is what is run whenever the spec says. Cách sử dụng. Dưới đây mình chỉ hướng dẫn cách sử dụng cơ bản cho mục đích giới thiệu, và rất có thể nhiều chỗ chưa chính xác và không an toàn. Nên nhớ rằng nếu bạn muốn làm một trang Web tận dụng Web Crypto API với yêu cầu bảo mật cao, bạn phải cẩn thận hơn. encrypt decrypt sign verify digest generateKey deriveKey deriveBits importKey exportKey wrapKey unwrapKey; AES-GCM: Yes: Yes: 128 bits 192 bits 256 bits: jwk-key raw-key: jwk-key raw-key: AES-CTR AES-CBC AES-GCM HMAC RSASSA-PKCS1-v1_5 RSA-PSS RSA-OAEP ECDSA ECDH: AES-CTR AES-CBC AES-GCM HMAC RSASSA-PKCS1-v1_5 RSA-PSS RSA-OAEP ECDSA ECDH: ECDSA: Yes: Yes: P-256 P-384 P-521: jwk-pub jwk-priv.

dart - AES GCM encrypt with web subtlecrypto and decrypt

With the web slowly maturing as a platform the demand for cryptography in the browser has risen, especially in a post-Snowden era. Many of us have heard about the upcoming Web Cryptography API but at the time of writing there seem to be no good introductions available. We will take a look at the proposed W3C spec and its current state of implementation API documentation for the Rust `rsa` crate. BigUint: A big unsigned integer type. RSAPrivateKey: Represents a whole RSA key, public and private parts crypto/subtle encoding/binary errors internal/cpu) // This file contains two implementations of AES-GCM. The first implementation // (gcmAsm) uses the KMCTR instruction to encrypt using AES in counter mode and // the KIMD instruction for GHASH. The second implementation (gcmKMA) uses the // newer KMA instruction which performs both operations. // gcmCount represents a 16-byte big.

Sign in. webkit / WebKit / c9f86e01f61372593518011929346acc239f7072 / . / LayoutTests / crypto / subtle / rsaes-pkcs1-v1_5-generate-key-extractable.htm Crypto.Hash package ¶. Crypto.Hash. package. Cryptographic hash functions take arbitrary binary strings as input, and produce a random-like fixed-length output (called digest or hash value ). It is practically infeasible to derive the original input data from the digest. In other words, the cryptographic hash function is one-way ( pre-image. First, encrypt the information and store it in one field (say: ssn ). Then, store a separate HMAC of the plaintext with a separate key in another field (e.g. ssn_lookup ) and create the database index on the second field. (This idea was proposed in an MSDN blog post by Raul Garcia /* * Copyright (C) 2013 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided. /* * Copyright (C) 2016 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided.

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