import RNSimpleCrypto from "react-native-simple-crypto";
 
const toHex = RNSimpleCrypto.utils.convertArrayBufferToHex
const toUtf8 = RNSimpleCrypto.utils.convertArrayBufferToUtf8
 
// -- AES ------------------------------------------------------------- //
const message = "data to encrypt";
const messageArrayBuffer = RNSimpleCrypto.utils.convertUtf8ToArrayBuffer(
  message
);
 
const keyArrayBuffer = await RNSimpleCrypto.utils.randomBytes(32);
console.log("randomBytes key", toHex(keyArrayBuffer));
 
const ivArrayBuffer = await RNSimpleCrypto.utils.randomBytes(16);
console.log("randomBytes iv", toHex(ivArrayBuffer));
 
const cipherTextArrayBuffer = await RNSimpleCrypto.AES.encrypt(
  messageArrayBuffer,
  keyArrayBuffer,
  ivArrayBuffer
);
console.log("AES encrypt", toHex(cipherTextArrayBuffer))
 
const decryptedArrayBuffer = await RNSimpleCrypto.AES.decrypt(
  cipherTextArrayBuffer,
  keyArrayBuffer,
  ivArrayBuffer
);
console.log("AES decrypt", toUtf8(decryptedArrayBuffer));
if (toUtf8(decryptedArrayBuffer) !== message) {
  console.error('AES decrypt returned unexpected results')
}
 
// -- HMAC ------------------------------------------------------------ //
 
const keyHmac = await RNSimpleCrypto.utils.randomBytes(32);
const signatureArrayBuffer = await RNSimpleCrypto.HMAC.hmac256(messageArrayBuffer, keyHmac);
console.log("HMAC signature", toHex(signatureArrayBuffer));
 
// -- SHA ------------------------------------------------------------- //
 
const sha1Hash = await RNSimpleCrypto.SHA.sha1("test");
console.log("SHA1 hash", sha1Hash);
 
const sha256Hash = await RNSimpleCrypto.SHA.sha256("test");
console.log("SHA256 hash", sha256Hash);
 
const sha512Hash = await RNSimpleCrypto.SHA.sha512("test");
console.log("SHA512 hash", sha512Hash);
 
const arrayBufferToHash = RNSimpleCrypto.utils.convertUtf8ToArrayBuffer("test");
const sha1ArrayBuffer = await RNSimpleCrypto.SHA.sha1(arrayBufferToHash);
console.log('SHA1 hash bytes', toHex(sha1ArrayBuffer));
if (toHex(sha1ArrayBuffer) !== sha1Hash) {
  console.error('SHA1 result mismatch!')
}
 
const sha256ArrayBuffer = await RNSimpleCrypto.SHA.sha256(arrayBufferToHash);
console.log('SHA256 hash bytes', toHex(sha256ArrayBuffer));
if (toHex(sha256ArrayBuffer) !== sha256Hash) {
  console.error('SHA256 result mismatch!')
}
 
const sha512ArrayBuffer = await RNSimpleCrypto.SHA.sha512(arrayBufferToHash);
console.log('SHA512 hash bytes', toHex(sha512ArrayBuffer));
if (toHex(sha512ArrayBuffer) !== sha512Hash) {
  console.error('SHA512 result mismatch!')
}
 
// -- PBKDF2 ---------------------------------------------------------- //
 
const password = "secret password";
const salt = "my-salt"
const iterations = 4096;
const keyInBytes = 32;
const hash = "SHA1";
const passwordKey = await RNSimpleCrypto.PBKDF2.hash(
  password,
  salt,
  iterations,
  keyInBytes,
  hash
);
console.log("PBKDF2 passwordKey", toHex(passwordKey));
 
const passwordKeyArrayBuffer = await RNSimpleCrypto.PBKDF2.hash(
  RNSimpleCrypto.utils.convertUtf8ToArrayBuffer(password),
  RNSimpleCrypto.utils.convertUtf8ToArrayBuffer(salt),
  iterations,
  keyInBytes,
  hash
);
console.log("PBKDF2 passwordKey bytes", toHex(passwordKeyArrayBuffer));
 
if (toHex(passwordKeyArrayBuffer) !== toHex(passwordKey)) {
  console.error('PBKDF2 result mismatch!')
}
 
const password2 = messageArrayBuffer;
const salt2 = await RNSimpleCrypto.utils.randomBytes(8);
const iterations2 = 10000;
const keyInBytes2 = 32;
const hash2 = "SHA256";
 
const passwordKey2 = await RNSimpleCrypto.PBKDF2.hash(
  password2,
  salt2,
  iterations2,
  keyInBytes2,
  hash2
);
console.log("PBKDF2 passwordKey2", toHex(passwordKey2));
 
 
// -- RSA ------------------------------------------------------------ //
 
const rsaKeys = await RNSimpleCrypto.RSA.generateKeys(1024);
console.log("RSA1024 private key", rsaKeys.private);
console.log("RSA1024 public key", rsaKeys.public);
 
const rsaEncryptedMessage = await RNSimpleCrypto.RSA.encrypt(
  message,
  rsaKeys.public
);
console.log("rsa Encrypt:", rsaEncryptedMessage);
 
const rsaSignature = await RNSimpleCrypto.RSA.sign(
  rsaEncryptedMessage,
  rsaKeys.private,
  "SHA256"
);
console.log("rsa Signature:", rsaSignature);
 
const validSignature = await RNSimpleCrypto.RSA.verify(
  rsaSignature,
  rsaEncryptedMessage,
  rsaKeys.public,
  "SHA256"
);
console.log("rsa signature verified:", validSignature);
 
const rsaDecryptedMessage = await RNSimpleCrypto.RSA.decrypt(
  rsaEncryptedMessage,
  rsaKeys.private
);
console.log("rsa Decrypt:", rsaDecryptedMessage);
if (rsaDecryptedMessage !== message ) {
  console.error('RSA decrypt returned unexpected result')
}