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author | Rebecca Turner <me@re-becca.org> | 2018-04-20 18:26:37 -0700 |
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committer | Rebecca Turner <me@re-becca.org> | 2018-05-24 23:24:45 -0700 |
commit | 468ab4519e1b92473acefb22801497a1af6aebae (patch) | |
tree | bdac1d062cd4b094bde3a21147bab5d82c792ece /deps/npm/node_modules/cryptiles/lib/index.js | |
parent | ac8226115e2192a7a46ba07789fa5136f74223e1 (diff) | |
download | android-node-v8-468ab4519e1b92473acefb22801497a1af6aebae.tar.gz android-node-v8-468ab4519e1b92473acefb22801497a1af6aebae.tar.bz2 android-node-v8-468ab4519e1b92473acefb22801497a1af6aebae.zip |
deps: upgrade npm to 6.1.0
PR-URL: https://github.com/nodejs/node/pull/20190
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Michaƫl Zasso <targos@protonmail.com>
Diffstat (limited to 'deps/npm/node_modules/cryptiles/lib/index.js')
-rwxr-xr-x | deps/npm/node_modules/cryptiles/lib/index.js | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/deps/npm/node_modules/cryptiles/lib/index.js b/deps/npm/node_modules/cryptiles/lib/index.js new file mode 100755 index 0000000000..511eab66d4 --- /dev/null +++ b/deps/npm/node_modules/cryptiles/lib/index.js @@ -0,0 +1,88 @@ +'use strict'; + +// Load modules + +const Crypto = require('crypto'); +const Boom = require('boom'); + + +// Declare internals + +const internals = {}; + + +// Generate a cryptographically strong pseudo-random data + +exports.randomString = function (size) { + + const buffer = exports.randomBits((size + 1) * 6); + if (buffer instanceof Error) { + return buffer; + } + + const string = buffer.toString('base64').replace(/\+/g, '-').replace(/\//g, '_').replace(/\=/g, ''); + return string.slice(0, size); +}; + + +// Return a random string of digits + +exports.randomDigits = function (size) { + + const buffer = exports.randomBits(size * 8); + if (buffer instanceof Error) { + return buffer; + } + + const digits = []; + for (let i = 0; i < buffer.length; ++i) { + digits.push(Math.floor(buffer[i] / 25.6)); + } + + return digits.join(''); +}; + + +// Generate a buffer of random bits + +exports.randomBits = function (bits) { + + if (!bits || + bits < 0) { + + return Boom.internal('Invalid random bits count'); + } + + const bytes = Math.ceil(bits / 8); + try { + return Crypto.randomBytes(bytes); + } + catch (err) { + return Boom.internal('Failed generating random bits: ' + err.message); + } +}; + + +// Compare two strings using fixed time algorithm (to prevent time-based analysis of MAC digest match) + +exports.fixedTimeComparison = function (a, b) { + + if (typeof a !== 'string' || + typeof b !== 'string') { + + return false; + } + + let mismatch = (a.length === b.length ? 0 : 1); + if (mismatch) { + b = a; + } + + for (let i = 0; i < a.length; ++i) { + const ac = a.charCodeAt(i); + const bc = b.charCodeAt(i); + mismatch |= (ac ^ bc); + } + + return (mismatch === 0); +}; |