Jack Hadrill
6dec3496e8
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23 lines
928 B
TypeScript
23 lines
928 B
TypeScript
import { cryptoAeadEncrypt } from './romulus-m'
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import { v4 as uuidv4 } from 'uuid'
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/**
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* Encrypt a message using the Romulus-M encryption algorithm.
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* N.B. A nonce is automatically prepended to the ciphertext using this function.
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* @param message The plaintext message to encrypt.
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* @param associatedData The associated data.
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* @param key The encryption key.
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* @returns The nonce-prepended ciphertext.
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*/
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export function encrypt (message: Uint8Array, associatedData: Uint8Array, key: Uint8Array): Uint8Array {
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// Generate a nonce.
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const nonce = new Uint8Array(16)
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uuidv4({}, nonce)
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// Encrypt the data using the associated data, newly generated nonce and encryption key.
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const ciphertext = Uint8Array.from(cryptoAeadEncrypt(Array.from(message), Array.from(associatedData), Array.from(nonce), Array.from(key)))
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// Return the nonce-prepended ciphertext.
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return new Uint8Array([...nonce, ...ciphertext])
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}
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