javascript - Questions about RSA padding algorithm -


so have javascript encrypted library using chrome extension encrypts text strings in rsa sends server, noticed uses pkcs#1 (type 2) padding pad data.

i wanted know if padding algorithmic considered secure enough rsa encrypting text , sending on unencrypted http connection.

here function performs padding:

    // pkcs#1 (type 2, random) pad input string s n bytes, , return bigint     function pkcs1pad2(s,n) {       if(n < s.length + 11) {         alert("message long rsa");         return null;       }       var ba = new array();       var = s.length - 1;       while(i >= 0 && n > 0) {ba[--n] = s.charcodeat(i--);};       ba[--n] = 0;       var rng = new securerandom();       var x = new array();       while(n > 2) { // random non-zero pad         x[0] = 0;         while(x[0] == 0) rng.nextbytes(x);         ba[--n] = x[0];       }       ba[--n] = 2;       ba[--n] = 0;       return new biginteger(ba);     }

how secure algorithm, , matter padding used in rsa long key large in size (4096 bit in case)?

is padding considered pkcs#1 1.5?

thanks.

yes, looks pkcs#1 padding. want hear it's 'security'? yes, secure. , still used in pki. can use oaep if doubt security. however, problem not on algorithm's side.


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