java - Can't decrypt Forge-encrypted data -

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i use create private key , encrypt:

var forge = require('node-forge'); var fs = require('fs');  var bytes = forge.random.getbytessync(16); console.log("random plaintext", forge.util.bytestohex(bytes)); var keypair = forge.pki.rsa.generatekeypair({bits: 2048, e: 17}); var encrypted = keypair.publickey.encrypt(bytes, 'rsa-oaep', {   md: forge.md.sha256.create(),   mgf1: {     md: forge.md.sha1.create()   } });  console.log("ciphertext", forge.util.bytestohex(encrypted)); fs.writefilesync('ciphertext', encrypted);  var pem = forge.pki.privatekeytopem(keypair.privatekey); fs.writefilesync('prikey.pem', pem); console.log("private key", forge.util.bytestohex(pem));

i try decrypting using either:

public class cryptotest {     public static void main(string[] args) throws exception {         pemparser parser = new pemparser(new filereader("/tmp/prikey.pem"));         security.addprovider(new org.bouncycastle.jce.provider.bouncycastleprovider());         jcapemkeyconverter   converter = new jcapemkeyconverter().setprovider("bc");         keypair kp = converter.getkeypair((pemkeypair) parser.readobject());         rsapublickey pubkey = (rsapublickey) kp.getpublic();         rsaprivatekey privkey = (rsaprivatekey) kp.getprivate();          byte[] ct = files.readallbytes(paths.get("/tmp/ciphertext"));          cipher oaepfrominit = cipher.getinstance("rsa/ecb/oaeppadding");         oaepparameterspec oaepparams = new oaepparameterspec("sha-256", "mgf1", new mgf1parameterspec("sha-1"), pspecified.default);         oaepfrominit.init(cipher.decrypt_mode, privkey, oaepparams);         byte[] pt = oaepfrominit.dofinal(ct);     }  }

or

openssl rsautl -decrypt -inkey prikey.pem -oaep -in ciphertext -out plaintext

the java code throws error:

exception in thread "main" java.lang.arrayindexoutofboundsexception: data rsa block     @ org.bouncycastle.jcajce.provider.asymmetric.rsa.cipherspi.enginedofinal(unknown source)     @ javax.crypto.cipher.dofinal(cipher.java:1966)     @ cryptotest.cryptotest.main(cryptotest.java:47)

and openssl says:

rsa operation error 140258189264528:error:0406506c:rsa routines:rsa_eay_private_decrypt:data greater mod len:rsa_eay.c:518:

what problem?

it necessary keep coded message in binary encoding:

fs.writefilesync('ciphertext', encrypted, {encoding: 'binary'});


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