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doc: update examples in api/crypto.md
* var -> const / let in crypto.md * fix error in crypto.md code example * equal -> strictEqual, == -> === in crypto.md * update estimated outputs in crypto.md * snake_case -> camelCase in crypto.md examples * concatenation -> multiline template in crypto * add missing line break in crypto code example * add missing link reference in crypto.md PR-URL: https://github.com/nodejs/node/pull/10909 Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Sam Roberts <vieuxtech@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
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Vse Mozhet Byt
James M Snell
parent
7eef09ddcf
commit
3e9c8ef53b
@ -26,7 +26,7 @@ It is possible for Node.js to be built without including support for the
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error being thrown.
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```js
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var crypto;
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let crypto;
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try {
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crypto = require('crypto');
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} catch (err) {
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@ -132,9 +132,9 @@ Example: Using `Cipher` objects as streams:
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const crypto = require('crypto');
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const cipher = crypto.createCipher('aes192', 'a password');
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var encrypted = '';
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let encrypted = '';
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cipher.on('readable', () => {
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var data = cipher.read();
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const data = cipher.read();
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if (data)
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encrypted += data.toString('hex');
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});
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@ -166,7 +166,7 @@ Example: Using the [`cipher.update()`][] and [`cipher.final()`][] methods:
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const crypto = require('crypto');
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const cipher = crypto.createCipher('aes192', 'a password');
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var encrypted = cipher.update('some clear text data', 'utf8', 'hex');
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let encrypted = cipher.update('some clear text data', 'utf8', 'hex');
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encrypted += cipher.final('hex');
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console.log(encrypted);
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// Prints: ca981be48e90867604588e75d04feabb63cc007a8f8ad89b10616ed84d815504
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@ -269,9 +269,9 @@ Example: Using `Decipher` objects as streams:
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const crypto = require('crypto');
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const decipher = crypto.createDecipher('aes192', 'a password');
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var decrypted = '';
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let decrypted = '';
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decipher.on('readable', () => {
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var data = decipher.read();
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const data = decipher.read();
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if (data)
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decrypted += data.toString('utf8');
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});
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@ -280,7 +280,7 @@ decipher.on('end', () => {
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// Prints: some clear text data
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});
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var encrypted = 'ca981be48e90867604588e75d04feabb63cc007a8f8ad89b10616ed84d815504';
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const encrypted = 'ca981be48e90867604588e75d04feabb63cc007a8f8ad89b10616ed84d815504';
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decipher.write(encrypted, 'hex');
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decipher.end();
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```
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@ -304,8 +304,8 @@ Example: Using the [`decipher.update()`][] and [`decipher.final()`][] methods:
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const crypto = require('crypto');
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const decipher = crypto.createDecipher('aes192', 'a password');
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var encrypted = 'ca981be48e90867604588e75d04feabb63cc007a8f8ad89b10616ed84d815504';
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var decrypted = decipher.update(encrypted, 'hex', 'utf8');
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const encrypted = 'ca981be48e90867604588e75d04feabb63cc007a8f8ad89b10616ed84d815504';
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let decrypted = decipher.update(encrypted, 'hex', 'utf8');
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decrypted += decipher.final('utf8');
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console.log(decrypted);
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// Prints: some clear text data
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@ -402,18 +402,18 @@ const assert = require('assert');
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// Generate Alice's keys...
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const alice = crypto.createDiffieHellman(2048);
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const alice_key = alice.generateKeys();
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const aliceKey = alice.generateKeys();
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// Generate Bob's keys...
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const bob = crypto.createDiffieHellman(alice.getPrime(), alice.getGenerator());
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const bob_key = bob.generateKeys();
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const bobKey = bob.generateKeys();
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// Exchange and generate the secret...
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const alice_secret = alice.computeSecret(bob_key);
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const bob_secret = bob.computeSecret(alice_key);
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const aliceSecret = alice.computeSecret(bobKey);
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const bobSecret = bob.computeSecret(aliceKey);
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// OK
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assert.equal(alice_secret.toString('hex'), bob_secret.toString('hex'));
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assert.strictEqual(aliceSecret.toString('hex'), bobSecret.toString('hex'));
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```
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### diffieHellman.computeSecret(other_public_key[, input_encoding][, output_encoding])
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@ -531,17 +531,17 @@ const assert = require('assert');
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// Generate Alice's keys...
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const alice = crypto.createECDH('secp521r1');
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const alice_key = alice.generateKeys();
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const aliceKey = alice.generateKeys();
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// Generate Bob's keys...
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const bob = crypto.createECDH('secp521r1');
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const bob_key = bob.generateKeys();
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const bobKey = bob.generateKeys();
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// Exchange and generate the secret...
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const alice_secret = alice.computeSecret(bob_key);
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const bob_secret = bob.computeSecret(alice_key);
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const aliceSecret = alice.computeSecret(bobKey);
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const bobSecret = bob.computeSecret(aliceKey);
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assert(alice_secret, bob_secret);
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assert.strictEqual(aliceSecret.toString('hex'), bobSecret.toString('hex'));
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// OK
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```
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@ -648,13 +648,14 @@ alice.setPrivateKey(
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);
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// Bob uses a newly generated cryptographically strong
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// pseudorandom key pair bob.generateKeys();
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// pseudorandom key pair
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bob.generateKeys();
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const alice_secret = alice.computeSecret(bob.getPublicKey(), null, 'hex');
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const bob_secret = bob.computeSecret(alice.getPublicKey(), null, 'hex');
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const aliceSecret = alice.computeSecret(bob.getPublicKey(), null, 'hex');
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const bobSecret = bob.computeSecret(alice.getPublicKey(), null, 'hex');
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// alice_secret and bob_secret should be the same shared secret value
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console.log(alice_secret === bob_secret);
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// aliceSecret and bobSecret should be the same shared secret value
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console.log(aliceSecret === bobSecret);
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```
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## Class: Hash
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@ -680,7 +681,7 @@ const crypto = require('crypto');
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const hash = crypto.createHash('sha256');
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hash.on('readable', () => {
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var data = hash.read();
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const data = hash.read();
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if (data)
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console.log(data.toString('hex'));
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// Prints:
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@ -763,7 +764,7 @@ const crypto = require('crypto');
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const hmac = crypto.createHmac('sha256', 'a secret');
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hmac.on('readable', () => {
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var data = hmac.read();
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const data = hmac.read();
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if (data)
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console.log(data.toString('hex'));
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// Prints:
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@ -847,8 +848,8 @@ const sign = crypto.createSign('RSA-SHA256');
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sign.write('some data to sign');
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sign.end();
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const private_key = getPrivateKeySomehow();
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console.log(sign.sign(private_key, 'hex'));
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const privateKey = getPrivateKeySomehow();
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console.log(sign.sign(privateKey, 'hex'));
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// Prints: the calculated signature
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```
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@ -860,8 +861,8 @@ const sign = crypto.createSign('RSA-SHA256');
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sign.update('some data to sign');
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const private_key = getPrivateKeySomehow();
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console.log(sign.sign(private_key, 'hex'));
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const privateKey = getPrivateKeySomehow();
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console.log(sign.sign(privateKey, 'hex'));
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// Prints: the calculated signature
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```
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@ -878,13 +879,14 @@ const sign = crypto.createSign('sha256');
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sign.update('some data to sign');
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const private_key = '-----BEGIN EC PRIVATE KEY-----\n' +
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'MHcCAQEEIF+jnWY1D5kbVYDNvxxo/Y+ku2uJPDwS0r/VuPZQrjjVoAoGCCqGSM49\n' +
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'AwEHoUQDQgAEurOxfSxmqIRYzJVagdZfMMSjRNNhB8i3mXyIMq704m2m52FdfKZ2\n' +
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'pQhByd5eyj3lgZ7m7jbchtdgyOF8Io/1ng==\n' +
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'-----END EC PRIVATE KEY-----\n';
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const privateKey =
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`-----BEGIN EC PRIVATE KEY-----
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MHcCAQEEIF+jnWY1D5kbVYDNvxxo/Y+ku2uJPDwS0r/VuPZQrjjVoAoGCCqGSM49
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AwEHoUQDQgAEurOxfSxmqIRYzJVagdZfMMSjRNNhB8i3mXyIMq704m2m52FdfKZ2
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pQhByd5eyj3lgZ7m7jbchtdgyOF8Io/1ng==
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-----END EC PRIVATE KEY-----`;
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console.log(sign.sign(private_key).toString('hex'));
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console.log(sign.sign(privateKey).toString('hex'));
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```
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### sign.sign(private_key[, output_format])
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@ -947,9 +949,9 @@ const verify = crypto.createVerify('RSA-SHA256');
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verify.write('some data to sign');
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verify.end();
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const public_key = getPublicKeySomehow();
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const publicKey = getPublicKeySomehow();
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const signature = getSignatureToVerify();
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console.log(verify.verify(public_key, signature));
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console.log(verify.verify(publicKey, signature));
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// Prints: true or false
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```
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@ -961,9 +963,9 @@ const verify = crypto.createVerify('RSA-SHA256');
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verify.update('some data to sign');
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const public_key = getPublicKeySomehow();
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const publicKey = getPublicKeySomehow();
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const signature = getSignatureToVerify();
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console.log(verify.verify(public_key, signature));
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console.log(verify.verify(publicKey, signature));
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// Prints: true or false
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```
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@ -1192,7 +1194,7 @@ const hash = crypto.createHash('sha256');
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const input = fs.createReadStream(filename);
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input.on('readable', () => {
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var data = input.read();
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const data = input.read();
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if (data)
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hash.update(data);
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else {
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@ -1226,7 +1228,7 @@ const hmac = crypto.createHmac('sha256', 'a secret');
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const input = fs.createReadStream(filename);
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input.on('readable', () => {
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var data = input.read();
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const data = input.read();
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if (data)
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hmac.update(data);
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else {
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@ -1278,7 +1280,7 @@ Example:
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```js
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const curves = crypto.getCurves();
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console.log(curves); // ['secp256k1', 'secp384r1', ...]
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console.log(curves); // ['Oakley-EC2N-3', 'Oakley-EC2N-4', ...]
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```
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### crypto.getDiffieHellman(group_name)
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@ -1307,11 +1309,11 @@ const bob = crypto.getDiffieHellman('modp14');
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alice.generateKeys();
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bob.generateKeys();
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const alice_secret = alice.computeSecret(bob.getPublicKey(), null, 'hex');
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const bob_secret = bob.computeSecret(alice.getPublicKey(), null, 'hex');
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const aliceSecret = alice.computeSecret(bob.getPublicKey(), null, 'hex');
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const bobSecret = bob.computeSecret(alice.getPublicKey(), null, 'hex');
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/* alice_secret and bob_secret should be the same */
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console.log(alice_secret == bob_secret);
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/* aliceSecret and bobSecret should be the same */
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console.log(aliceSecret === bobSecret);
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```
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### crypto.getHashes()
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@ -1326,7 +1328,7 @@ Example:
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```js
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const hashes = crypto.getHashes();
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console.log(hashes); // ['sha', 'sha1', 'sha1WithRSAEncryption', ...]
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console.log(hashes); // ['DSA', 'DSA-SHA', 'DSA-SHA1', ...]
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```
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### crypto.pbkdf2(password, salt, iterations, keylen, digest, callback)
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@ -1357,7 +1359,7 @@ Example:
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const crypto = require('crypto');
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crypto.pbkdf2('secret', 'salt', 100000, 512, 'sha512', (err, key) => {
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if (err) throw err;
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console.log(key.toString('hex')); // 'c5e478d...1469e50'
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console.log(key.toString('hex')); // '3745e48...aa39b34'
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});
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```
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@ -1390,7 +1392,7 @@ Example:
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```js
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const crypto = require('crypto');
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const key = crypto.pbkdf2Sync('secret', 'salt', 100000, 512, 'sha512');
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console.log(key.toString('hex')); // 'c5e478d...1469e50'
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console.log(key.toString('hex')); // '3745e48...aa39b34'
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```
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An array of supported digest functions can be retrieved using
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@ -1938,6 +1940,7 @@ the `crypto`, `tls`, and `https` modules and are generally specific to OpenSSL.
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[`crypto.createHash()`]: #crypto_crypto_createhash_algorithm
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[`crypto.createHmac()`]: #crypto_crypto_createhmac_algorithm_key
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[`crypto.createSign()`]: #crypto_crypto_createsign_algorithm
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[`crypto.createVerify()`]: #crypto_crypto_createverify_algorithm
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[`crypto.getCurves()`]: #crypto_crypto_getcurves
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[`crypto.getHashes()`]: #crypto_crypto_gethashes
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[`crypto.pbkdf2()`]: #crypto_crypto_pbkdf2_password_salt_iterations_keylen_digest_callback
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