WebCrypto DOMException with RSA encrypt method

[stanvladut]

Having the following code I can encrypt a small text file with some small text in it, but when I try with a 1MB text file I get DOMException.

I tried with the same files and even bigger ones with AES and everything worked well. Is there a limit of a file that can be encrypted with RSA-OAEP encrypt method?

var encryptFile = function(keyPair, file) {
var vector = crypto.getRandomValues(new Uint8Array(16));
window.crypto.subtle.encrypt(
{
name: "RSA-OAEP",
iv: vector
//label: Uint8Array([...]) //optional
},
keyPair.publicKey, //from generateKey or importKey above
file//ArrayBuffer of the data
)
.then(function(encrypted){
//returns an ArrayBuffer containing the decrypted data
console.log(encrypted);
})
.catch(function(err){
console.error(err);
});
};

[vibornoff]

Is there a limit of a file that can be encrypted with RSA-OAEP encrypt method?

RFC-3447, paragraph 7.1.1 says

message <...>, an octet string of length mLen, where mLen <= k - 2hLen - 2

where k, hLen are:

k denotes the length in octets of the RSA modulus n
hLen — output length in octets of hash function

[stanvladut]

Thank you so much, you are a life saver!! Sorry for my superficiality