im trying to convert java lambda into javascript lamda. want to convert these encrypt and decrypt method which is written in java to node js or javascript. I have tried to implement using crpto in node
keys are like this
private static String CIPHER_NAME = "AES/CBC/PKCS5PADDING"; private static int CIPHER_KEY_LEN = 16; //128 bits encrypt method
private String encrypt(String key, String iv, String data) { try { if (key.length() <CIPHER_KEY_LEN) { int numPad = CIPHER_KEY_LEN - key.length(); for(int i = 0; i < numPad; i++){ key += "0"; //0 pad to len 16 bytes } } else if (key.length() >CIPHER_KEY_LEN) { key = key.substring(0, CIPHER_KEY_LEN); //truncate to 16 bytes } IvParameterSpec initVector = new IvParameterSpec(iv.getBytes("ISO-8859-1")); SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes("ISO-8859-1"), "AES"); Cipher cipher = Cipher.getInstance(CIPHER_NAME); cipher.init(Cipher.ENCRYPT_MODE, skeySpec, initVector); byte[] encryptedData = cipher.doFinal((data.getBytes())); String base64_EncryptedData = Base64.getEncoder().encodeToString(encryptedData); String base64_IV = Base64.getEncoder().encodeToString(iv.getBytes("ISO-8859-1")); return base64_EncryptedData + ":" + base64_IV; } catch (Exception ex) { ex.printStackTrace(); } return null; } decrypt method
private String decrypt(String key, String data) { try { if (key.length() < CIPHER_KEY_LEN) { int numPad = CIPHER_KEY_LEN - key.length(); for(int i = 0; i < numPad; i++){ key += "0"; //0 pad to len 16 bytes } } else if (key.length() > CIPHER_KEY_LEN) { key = key.substring(0, CIPHER_KEY_LEN); //truncate to 16 bytes } String[] parts = data.split(":"); IvParameterSpec iv = new IvParameterSpec(Base64.getDecoder().decode(parts[1])); SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes("ISO-8859-1"), "AES"); Cipher cipher = Cipher.getInstance(CIPHER_NAME); cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv); byte[] decodedEncryptedData = Base64.getDecoder().decode(parts[0]); byte[] original = cipher.doFinal(decodedEncryptedData); return new String(original); } catch (Exception ex) { ex.printStackTrace(); } return null; } I have used this is the solution i made but seems it not working cause i encrypted this using a java code and using node's javascript code to decrypt it.
function decrypt (messagebase64, keyBase64, ivBase64) { var key = Buffer.from(keyBase64, 'base64'); var iv = Buffer.from(ivBase64, 'base64'); var decipher = crypto.createDecipheriv(getAlgorithm(keyBase64), key, iv); decipher.setAutoPadding(false); decipher.update(messagebase64, 'base64'); return decipher.final(); } find the alogorithm i use this and adding padding if the key is not long enough but this give error that saying length is not enough.
function getAlgorithm(keyBase64) { if(keyBase64.length<CIPHER_KEY_LEN){ var padding = CIPHER_KEY_LEN-keyBase64.length; for(var i=0;i<padding;i++){ keyBase64+="0"; } }else if(keyBase64.length>CIPHER_KEY_LEN){ keyBase64 =keyBase64.substring(0, CIPHER_KEY_LEN) } var key = Buffer.from(keyBase64, 'base64'); switch (key.length) { case 16: return 'aes-128-cbc'; case 32: return 'aes-256-cbc'; } throw new Error('Invalid key length: ' + key.length); } 