Is there a faster method of decrypting RSA via javascript than cryptico

Question

I am using cryptico to encrypt and decrypt data, but when decrypting 3-4 piece of data at once, cryptico can take up to 10 seconds and freezes the browser. Is there any faster way to decrypt RSA data using javascript?

Answer 1

I must admit cyrto algorithms is not my strong point..

But using details from here -> https://github.com/diafygi/webcrypto-examples

I've knocked up a little snippet that encodes and then decodes a message.

 async function test() { const key = await window.crypto.subtle.generateKey( { name: "RSA-OAEP", modulusLength: 2048, //can be 1024, 2048, or 4096 publicExponent: new Uint8Array([0x01, 0x00, 0x01]), hash: {name: "SHA-256"}, }, false, ["encrypt", "decrypt"] ); const data = new TextEncoder().encode("some private message.."); const enc_data = await window.crypto.subtle.encrypt( { name: "RSA-OAEP" }, key.publicKey, data ); const dec_data = await window.crypto.subtle.decrypt( { name: "RSA-OAEP" }, key.privateKey, enc_data ); const decoded = new TextDecoder().decode(dec_data); console.log(decoded); } test();