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crypto: add better scrypt option aliases · nodejs/node@d005ae0 · GitHub

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crypto: add better scrypt option aliases
Make parameter names available in a human-readable way, for more accessible/self-documenting usage of the `scrypt` functions. This implements a review comment from the original PR that has not been addressed. Refs: #20816 (comment) PR-URL: #21525 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Tobias Nießen <tniessen@tnie.de> Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
1 parent c85d00b commit d005ae0

3 files changed

Lines changed: 79 additions & 14 deletions

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‎doc/api/crypto.md‎

Lines changed: 22 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -2152,15 +2152,23 @@ request.
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### crypto.scrypt(password, salt, keylen[, options], callback)
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<!-- YAML
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added: v10.5.0
2155+
changes:
2156+
- version: REPLACEME
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pr-url: https://github.com/nodejs/node/pull/XXX
2158+
description: The `cost`, `blockSize` and `parallelization` option names
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have been added.
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-->
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* `password` {string|Buffer|TypedArray|DataView}
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* `salt` {string|Buffer|TypedArray|DataView}
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* `keylen` {number}
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* `options` {Object}
2160-
- `N` {number} CPU/memory cost parameter. Must be a power of two greater
2165+
- `cost` {number} CPU/memory cost parameter. Must be a power of two greater
21612166
than one. **Default:** `16384`.
2162-
- `r` {number} Block size parameter. **Default:** `8`.
2163-
- `p` {number} Parallelization parameter. **Default:** `1`.
2167+
- `blockSize` {number} Block size parameter. **Default:** `8`.
2168+
- `parallelization` {number} Parallelization parameter. **Default:** `1`.
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- `N` {number} Alias for `cost`. Only one of both may be specified.
2170+
- `r` {number} Alias for `blockSize`. Only one of both may be specified.
2171+
- `p` {number} Alias for `parallelization`. Only one of both may be specified.
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- `maxmem` {number} Memory upper bound. It is an error when (approximately)
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`128 * N * r > maxmem`. **Default:** `32 * 1024 * 1024`.
21662174
* `callback` {Function}
@@ -2198,15 +2206,23 @@ crypto.scrypt('secret', 'salt', 64, { N: 1024 }, (err, derivedKey) => {
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### crypto.scryptSync(password, salt, keylen[, options])
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<!-- YAML
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added: v10.5.0
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changes:
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- version: REPLACEME
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pr-url: https://github.com/nodejs/node/pull/XXX
2212+
description: The `cost`, `blockSize` and `parallelization` option names
2213+
have been added.
22012214
-->
22022215
* `password` {string|Buffer|TypedArray|DataView}
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* `salt` {string|Buffer|TypedArray|DataView}
22042217
* `keylen` {number}
22052218
* `options` {Object}
2206-
- `N` {number} CPU/memory cost parameter. Must be a power of two greater
2219+
- `cost` {number} CPU/memory cost parameter. Must be a power of two greater
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than one. **Default:** `16384`.
2208-
- `r` {number} Block size parameter. **Default:** `8`.
2209-
- `p` {number} Parallelization parameter. **Default:** `1`.
2221+
- `blockSize` {number} Block size parameter. **Default:** `8`.
2222+
- `parallelization` {number} Parallelization parameter. **Default:** `1`.
2223+
- `N` {number} Alias for `cost`. Only one of both may be specified.
2224+
- `r` {number} Alias for `blockSize`. Only one of both may be specified.
2225+
- `p` {number} Alias for `parallelization`. Only one of both may be specified.
22102226
- `maxmem` {number} Memory upper bound. It is an error when (approximately)
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`128 * N * r > maxmem`. **Default:** `32 * 1024 * 1024`.
22122228
* Returns: {Buffer}

‎lib/internal/crypto/scrypt.js‎

Lines changed: 17 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -80,13 +80,26 @@ function check(password, salt, keylen, options, callback) {
8080

8181
let { N, r, p, maxmem } = defaults;
8282
if (options && options !== defaults) {
83-
if (options.hasOwnProperty('N'))
83+
let has_N, has_r, has_p;
84+
if (has_N = (options.N !== undefined))
8485
N = validateInt32(options.N, 'N', 0, INT_MAX);
85-
if (options.hasOwnProperty('r'))
86+
if (options.cost !== undefined) {
87+
if (has_N) throw new ERR_CRYPTO_SCRYPT_INVALID_PARAMETER();
88+
N = validateInt32(options.cost, 'cost', 0, INT_MAX);
89+
}
90+
if (has_r = (options.r !== undefined))
8691
r = validateInt32(options.r, 'r', 0, INT_MAX);
87-
if (options.hasOwnProperty('p'))
92+
if (options.blockSize !== undefined) {
93+
if (has_r) throw new ERR_CRYPTO_SCRYPT_INVALID_PARAMETER();
94+
r = validateInt32(options.blockSize, 'blockSize', 0, INT_MAX);
95+
}
96+
if (has_p = (options.p !== undefined))
8897
p = validateInt32(options.p, 'p', 0, INT_MAX);
89-
if (options.hasOwnProperty('maxmem'))
98+
if (options.parallelization !== undefined) {
99+
if (has_p) throw new ERR_CRYPTO_SCRYPT_INVALID_PARAMETER();
100+
p = validateInt32(options.parallelization, 'parallelization', 0, INT_MAX);
101+
}
102+
if (options.maxmem !== undefined)
90103
maxmem = validateInt32(options.maxmem, 'maxmem', 0, INT_MAX);
91104
if (N === 0) N = defaults.N;
92105
if (r === 0) r = defaults.r;

‎test/parallel/test-crypto-scrypt.js‎

Lines changed: 40 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -56,14 +56,50 @@ const good = [
5656
'7023bdcb3afd7348461c06cd81fd38ebfda8fbba904f8e3ea9b543f6545da1f2' +
5757
'd5432955613f0fcf62d49705242a9af9e61e85dc0d651e40dfcf017b45575887',
5858
},
59+
{
60+
pass: '',
61+
salt: '',
62+
keylen: 64,
63+
cost: 16,
64+
parallelization: 1,
65+
blockSize: 1,
66+
expected:
67+
'77d6576238657b203b19ca42c18a0497f16b4844e3074ae8dfdffa3fede21442' +
68+
'fcd0069ded0948f8326a753a0fc81f17e8d3e0fb2e0d3628cf35e20c38d18906',
69+
},
70+
{
71+
pass: 'password',
72+
salt: 'NaCl',
73+
keylen: 64,
74+
cost: 1024,
75+
parallelization: 16,
76+
blockSize: 8,
77+
expected:
78+
'fdbabe1c9d3472007856e7190d01e9fe7c6ad7cbc8237830e77376634b373162' +
79+
'2eaf30d92e22a3886ff109279d9830dac727afb94a83ee6d8360cbdfa2cc0640',
80+
},
81+
{
82+
pass: 'pleaseletmein',
83+
salt: 'SodiumChloride',
84+
keylen: 64,
85+
cost: 16384,
86+
parallelization: 1,
87+
blockSize: 8,
88+
expected:
89+
'7023bdcb3afd7348461c06cd81fd38ebfda8fbba904f8e3ea9b543f6545da1f2' +
90+
'd5432955613f0fcf62d49705242a9af9e61e85dc0d651e40dfcf017b45575887',
91+
},
5992
];
6093

6194
// Test vectors that should fail.
6295
const bad = [
63-
{ N: 1, p: 1, r: 1 }, // N < 2
64-
{ N: 3, p: 1, r: 1 }, // Not power of 2.
65-
{ N: 2 ** 16, p: 1, r: 1 }, // N >= 2**(r*16)
66-
{ N: 2, p: 2 ** 30, r: 1 }, // p > (2**30-1)/r
96+
{ N: 1, p: 1, r: 1 }, // N < 2
97+
{ N: 3, p: 1, r: 1 }, // Not power of 2.
98+
{ N: 2 ** 16, p: 1, r: 1 }, // N >= 2**(r*16)
99+
{ N: 2, p: 2 ** 30, r: 1 }, // p > (2**30-1)/r
100+
{ N: 1, cost: 1 }, // both N and cost
101+
{ p: 1, parallelization: 1 }, // both p and parallelization
102+
{ r: 1, blockSize: 1 } // both r and blocksize
67103
];
68104

69105
// Test vectors where 128*N*r exceeds maxmem.

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