RSA OAEP, encryption with Golang and decryption with NodeJS (node-rsa)

rsa_oaep_decrypt.js

const nodeRSA = require('node-rsa');

/**
 * return the decrypted Data (RSA OAEP Encryption)
 * @param {string} RSAPrivateKey 
 * @param {string} EncrypteDataBuffer
 * @returns {string} Data decrypted data
 */
var RSA_OAEP_Decrypt = function(RSAPrivateKey, EncrypteDataBuffer){
  
  // ----- Setting RSA OAEP Configuration [ start ] -----
  let RSAPrivate = new nodeRSA(RSAPrivateKey);
  RSAPrivate.setOptions({
      environment: 'browser',
      encryptionScheme: {
          scheme: 'pkcs1_oaep',
          hash: 'sha256',
          label: 'RSA_LABEL'
      }
  });
  // ----- Setting RSA OAEP Configuration [ end ] -----

  let encryptedData = Buffer.from(EncrypteDataBuffer, "hex");
  let data = RSAPrivate.decrypt(encryptedData);
  return data;
};

rsa_oaep_encrypt.go

package main

import (
	"bytes"
  "crypto/rand"
	"crypto/rsa"
	"crypto/x509"
	"encoding/hex"
	"encoding/pem"
	"errors"
)
const (
  RSA_LABEL = "RSA_LABEL"
)

// EncryptWithRSAPublicKey encrypts the data with RSA public key
func EncryptWithRSAPublicKey(plainData []byte, RSAPublicKeyString string) (string, error) {

	// ----- Converting RSA Public key string to Public key object [ start ] -----
	block, _ := pem.Decode([]byte(RSAPublicKeyString))
	if block == nil {
		return "", errors.New("failed to parse PEM block containing the public key")
	}

	RSAPublicKey, err := x509.ParsePKIXPublicKey(block.Bytes)
	if err != nil {
		return "", errors.New("failed to parse DER encoded public key: "+err.Error())
	}
	// ----- Converting RSA Public key string to Public key object [ end ] -----

	// encrypting Data
	randomSource := rand.Reader
	encryptedDataBytes, err := rsa.EncryptOAEP(sha256.New(), randomSource, RSAPublicKey.(*rsa.PublicKey), plainData, []byte(RSA_LABEL))
	if err != nil {
		return "", err
	}

	// hex encoding
	encryptedData := hex.EncodeToString(encryptedDataBytes)
	return encryptedData, nil
}

Reference: golang cross platform decrypt nodeJS encrypt · Issue #105 · rzcoder/node-rsa