cryptpadtab

commit

6f4fce2498cd671e1c63f653246a191392899e6c

parent

259720414057453059bb4deb2066b29d13650d18

Author

Tobias Bengfort <tobias.bengfort@posteo.de>

Date

2024-05-29 16:18

encrypt parameter for optional encryption

Diffstat

2 files changed, 15 insertions, 10 deletions

diff --git a/static/crypto.js b/static/crypto.js

@@ -82,18 +82,22 @@ export async function decrypt(bytes, key) {
   82    82 	));
   83    83 }
   84    84 
   85    -1 export async function encryptText(text, key) {
   -1    85 export async function encodeText(text, key) {
   86    86 	var encoder = new TextEncoder();
   87    87 	var bytes = encoder.encode(text);
   88    88 	bytes = await compress(bytes);
   89    -1 	bytes = await encrypt(bytes, key);
   -1    89 	if (key) {
   -1    90 		bytes = await encrypt(bytes, key);
   -1    91 	}
   90    92 	return b64encode(bytes);
   91    93 }
   92    94 
   93    -1 export async function decryptText(string, key) {
   -1    95 export async function decodeText(string, key) {
   94    96 	var decoder = new TextDecoder();
   95    97 	var bytes = b64decode(string);
   96    -1 	bytes = await decrypt(bytes, key);
   -1    98 	if (key) {
   -1    99 		bytes = await decrypt(bytes, key);
   -1   100 	}
   97   101 	bytes = await decompress(bytes);
   98   102 	return decoder.decode(bytes);
   99   103 }

diff --git a/static/main.js b/static/main.js

@@ -1,15 +1,16 @@
    1     1 import * as crypto from './crypto.js';
    2     2 
    3     3 var params = new URLSearchParams(location.search);
    4    -1 
    5    -1 var password = window.prompt('Please enter the password');
    6    -1 var key = await crypto.getKey(password);
    7    -1 
    8     4 var textarea = document.querySelector('textarea');
    9     5 
   -1     6 if (params.has('encrypt')) {
   -1     7 	var password = window.prompt('Please enter the password');
   -1     8 	var key = await crypto.getKey(password);
   -1     9 }
   -1    10 
   10    11 if (location.hash.length) {
   11    12 	try {
   12    -1 		var plaintext = await crypto.decryptText(location.hash.substr(1), key);
   -1    13 		var plaintext = await crypto.decodeText(location.hash.substr(1), key);
   13    14 		if (params.has('view')) {
   14    15 			document.write(plaintext);
   15    16 			document.close();
@@ -23,6 +24,6 @@ if (location.hash.length) {
   23    24 }
   24    25 
   25    26 textarea.addEventListener('input', async () => {
   26    -1 	var data = await crypto.encryptText(textarea.value, key);
   -1    27 	var data = await crypto.encodeText(textarea.value, key);
   27    28 	history.replaceState(null, '', `#${data}`);
   28    29 });