Is RSA encrypted using jsencrypt and decrypted with a bouncy castle?

Question

Right. I have a little problem. I use the Javascript library (jsencrypt) to encrypt the message in the browser. This message is then sent to the backend, where it is decrypted using the Java library (bouncycastle). My problem is that I can encrypt and decrypt messages using both libraries that don't seem to want to work together. Therefore, when I encrypt my message in the browser and send it to the backend, I get garbled gibberish. Does anyone know what is going on here?

JSENCRYPT

var text = "This is another msg!";
var pubkey = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwyTZf5gRWJdEevtK7sJSz14lhs1Jw7+aFhGtr4cbDGxdiXH8J+BwuYmBc6QFMhRw7AeYcgkx9zPb3SICzr+oK17RMA6T66dH+GPXp75LFUmfONfk2JdSeO80mMODGctSuefWDvoQ24Cq0Bz+ysrhP7hRqvJso5a0GMNPwt8ErtWfz4HZjSsaaZ7gXga2h5dq1OTcGNfevkDN9CJtFW/0Wwb/F6cnXngVHE41rsN4POUB3IWcX2CrCGxSraa+xsT/P7AJ8HRJ4wcjl9G2K/rlHJ8ZXZKlIuWwEzx0/F0IjE+S93tLpDgt6YJxjWqYqjL2uuJAGmEU323+PWA3jFTC+QIDAQAB";        

var encrypt = new JSEncrypt();
encrypt.setPublicKey(pubkey);
var ciphertext = encrypt.encrypt(text);
console.log("ciphertext  : " + ciphertext);

var decrypt = new JSEncrypt();
decrypt.setPrivateKey($("#privkey").val());
var plaintext = decrypt.decrypt(ciphertext);
console.log("plaintext  : " + plaintext);

Bouncycastle

String cipherText = "jQ/I+oyyIfG5ARIHZsa6MfxwHciCt+3p6l+bLh4NPinq2s8eDjbO9O8abhVt2xuBQQcPAIaqbiP3Y3vRFYLOD2O+inKWiL1SpSBxvUb0XlWMgLmOqWUL6w6sL2iEla3i5EbdlrkK0uLA7QOUc6/fGVyLVe8VL7Vv4BGlo/cxR2FN74HK4MtLFRNaLKejwD6WbCNQoz4sIMA/Ez8GRSVEMyeYVZoWELShvyIRCqVADboAeuEP5l+oFlzgQfW6HFdpPnX+9TnHrbezdWhXiuJiD1Mq4VTicsya50MNcXJuPDV7NINYZs72UCS8NTYvfVkFc2lO7EUlDvvJ7Ns4wWuuWQ==";

PemReader pemReader = new PemReader(new InputStreamReader(new FileInputStream("priv.pem")));
PemObject pemObject = null;

try 
{
    pemObject = pemReader.readPemObject();

} finally {

    pemReader.close();
}

PrivateKey privateKey = EncryptionUtil.generatePrivateKey(pemObject.getContent());
byte[] plainText = EncryptionUtil.asymDecrypt(privateKey, cipherText.getBytes());
System.out.println(new String(plainText));

Answer 1

@EbbeM.Pedersen

. , RSA-OAEP PKCS # 1.

. bouncycastle PKCS # 1, .

.