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Use JS fallback code for RSA decryption on Node if PKCS#1 is not supported

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Necessary as Node v18.19.1, 20.11.1 and 21.6.2 have disabled support for PKCS#1 decryption.
This commit is contained in:
larabr 2024-02-19 12:26:47 +01:00
parent 7003d19c71
commit 3d664e7b26
1 changed files with 10 additions and 6 deletions
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16
src/crypto/public_key/rsa.js
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@ -140,8 +140,15 @@ export async function encrypt(data, n, e) {
* @async * @async
*/ */
export async function decrypt(data, n, e, d, p, q, u, randomPayload) { export async function decrypt(data, n, e, d, p, q, u, randomPayload) {
if (util.getNodeCrypto()) { // Node v18.19.1, 20.11.1 and 21.6.2 have disabled support for PKCS#1 decryption,
return nodeDecrypt(data, n, e, d, p, q, u, randomPayload); // and we want to avoid checking the error type to decide if the random payload
// should indeed be returned.
if (util.getNodeCrypto() && !randomPayload) {
try {
return await nodeDecrypt(data, n, e, d, p, q, u);
} catch (err) {
util.printDebugError(err);
}
} }
return bnDecrypt(data, n, e, d, p, q, u, randomPayload); return bnDecrypt(data, n, e, d, p, q, u, randomPayload);
} }
@ -443,7 +450,7 @@ async function bnEncrypt(data, n, e) {
return data.modExp(e, n).toUint8Array('be', n.byteLength()); return data.modExp(e, n).toUint8Array('be', n.byteLength());
} }
async function nodeDecrypt(data, n, e, d, p, q, u, randomPayload) { async function nodeDecrypt(data, n, e, d, p, q, u) {
const { default: BN } = await import('bn.js'); const { default: BN } = await import('bn.js');
const pBNum = new BN(p); const pBNum = new BN(p);
@ -477,9 +484,6 @@ async function nodeDecrypt(data, n, e, d, p, q, u, randomPayload) {
try { try {
return new Uint8Array(nodeCrypto.privateDecrypt(key, data)); return new Uint8Array(nodeCrypto.privateDecrypt(key, data));
} catch (err) { } catch (err) {
if (randomPayload) {
return randomPayload;
}
throw new Error('Decryption error'); throw new Error('Decryption error');
} }
} }