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30 lines
1007 B
30 lines
1007 B
3 years ago
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import crypto from 'crypto' // Does not work on client because this is a Node library, but works for below server-only functions
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// These libraries are old but they work and can be included on both server and client
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import shajs from 'sha.js'
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import hmac from 'hash.js/lib/hash/hmac.js'
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import sha256 from 'hash.js/lib/hash/sha/256.js' // Only works for shorter hashes, not in createHash used for hashing meme files
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export function createHash(payload) {
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return shajs('sha256').update(payload).digest('hex')
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}
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export function hmacHex(data, signingKey) {
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return hmac(sha256, signingKey).update(data).digest('hex')
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}
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export function derivePublicKey(p) {
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return crypto.createPublicKey(p).export({
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type: 'spki',
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format: 'pem',
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})
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}
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export function encryptToPublic(pub, info) {
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return crypto.publicEncrypt(pub, new Buffer(info)).toString('hex')
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}
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export function decryptFromPrivate(priv, hiddenInfo) {
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return crypto
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.privateDecrypt(priv, Buffer.from(hiddenInfo, 'hex'))
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.toString('latin1')
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}
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