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Converted crypto.js to typescript (#47)

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This commit is contained in:
Vladyslav Matsiiako
2022-11-28 08:41:47 -05:00
parent 3246d6b6df
commit 3c7cd01dd5
1 changed files with 32 additions and 7 deletions
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39
frontend/components/utilities/cryptography/crypto.js → frontend/components/utilities/cryptography/crypto.ts
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@@ -2,6 +2,12 @@ const nacl = require("tweetnacl");
nacl.util = require("tweetnacl-util");
const aes = require("./aes-256-gcm");
type encryptAsymmetricProps = {
plaintext: string;
publicKey: string;
privateKey: string;
}
/**
* Return assymmetrically encrypted [plaintext] using [publicKey] where
* [publicKey] likely belongs to the recipient.
@@ -13,7 +19,7 @@ const aes = require("./aes-256-gcm");
* @returns {String} ciphertext - base64-encoded ciphertext
* @returns {String} nonce - base64-encoded nonce
*/
const encryptAssymmetric = ({ plaintext, publicKey, privateKey }) => {
const encryptAssymmetric = ({ plaintext, publicKey, privateKey }: encryptAsymmetricProps): object => {
const nonce = nacl.randomBytes(24);
const ciphertext = nacl.box(
nacl.util.decodeUTF8(plaintext),
@@ -28,6 +34,13 @@ const encryptAssymmetric = ({ plaintext, publicKey, privateKey }) => {
};
};
type decryptAsymmetricProps = {
ciphertext: string;
nonce: string;
publicKey: string;
privateKey: string;
}
/**
* Return assymmetrically decrypted [ciphertext] using [privateKey] where
* [privateKey] likely belongs to the recipient.
@@ -38,7 +51,7 @@ const encryptAssymmetric = ({ plaintext, publicKey, privateKey }) => {
* @param {String} obj.privateKey - base64-encoded private key of the receiver (current user)
* @param {String} plaintext - UTF8 plaintext
*/
const decryptAssymmetric = ({ ciphertext, nonce, publicKey, privateKey }) => {
const decryptAssymmetric = ({ ciphertext, nonce, publicKey, privateKey }: decryptAsymmetricProps): string => {
const plaintext = nacl.box.open(
nacl.util.decodeBase64(ciphertext),
nacl.util.decodeBase64(nonce),
@@ -49,13 +62,18 @@ const decryptAssymmetric = ({ ciphertext, nonce, publicKey, privateKey }) => {
return nacl.util.encodeUTF8(plaintext);
};
type encryptSymmetricProps = {
plaintext: string;
key: string;
}
/**
* Return symmetrically encrypted [plaintext] using [key].
* @param {Object} obj
* @param {String} obj.plaintext - plaintext to encrypt
* @param {String} obj.key - 16-byte hex key
*/
const encryptSymmetric = ({ plaintext, key }) => {
const encryptSymmetric = ({ plaintext, key }: encryptSymmetricProps): object => {
let ciphertext, iv, tag;
try {
const obj = aes.encrypt(plaintext, key);
@@ -75,6 +93,13 @@ const encryptSymmetric = ({ plaintext, key }) => {
};
};
type decryptSymmetricProps = {
ciphertext: string;
iv: string;
tag: string;
key: string;
}
/**
* Return symmetrically decypted [ciphertext] using [iv], [tag],
* and [key].
@@ -85,7 +110,7 @@ const encryptSymmetric = ({ plaintext, key }) => {
* @param {String} obj.key - 32-byte hex key
*
*/
const decryptSymmetric = ({ ciphertext, iv, tag, key }) => {
const decryptSymmetric = ({ ciphertext, iv, tag, key }: decryptSymmetricProps): string => {
let plaintext;
try {
plaintext = aes.decrypt(ciphertext, iv, tag, key);
@@ -97,9 +122,9 @@ const decryptSymmetric = ({ ciphertext, iv, tag, key }) => {
return plaintext;
};
module.exports = {
encryptAssymmetric,
export {
decryptAssymmetric,
encryptSymmetric,
decryptSymmetric,
encryptAssymmetric,
encryptSymmetric,
};