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Remove non-AES CFB quick check

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This commit is contained in:
Daniel Huigens 2018-12-11 14:05:26 +01:00
parent c7339f6f78
commit d4d94c6fb7
1 changed files with 1 additions and 21 deletions
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22
src/crypto/cfb.js
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@ -181,7 +181,7 @@ export default {
cipherfn = new cipher[cipherfn](key);
const block_size = cipherfn.blockSize;
let iblock = new Uint8Array(block_size);
const iblock = new Uint8Array(block_size);
let ablock = new Uint8Array(block_size);
let i;
@ -189,30 +189,10 @@ export default {
let n;
let text = new Uint8Array(ciphertext.length - block_size);
// initialisation vector
for (i = 0; i < block_size; i++) {
iblock[i] = 0;
}
iblock = cipherfn.encrypt(iblock);
for (i = 0; i < block_size; i++) {
ablock[i] = ciphertext[i];
iblock[i] ^= ablock[i];
}
ablock = cipherfn.encrypt(ablock);
// test check octets
if (iblock[block_size - 2] !== (ablock[0] ^ ciphertext[block_size]) ||
iblock[block_size - 1] !== (ablock[1] ^ ciphertext[block_size + 1])) {
throw new Error('CFB decrypt: invalid key');
}
/* RFC4880: Tag 18 and Resync:
* [...] Unlike the Symmetrically Encrypted Data Packet, no
* special CFB resynchronization is done after encrypting this prefix
* data. See "OpenPGP CFB Mode" below for more details.
*/
j = 0;