DarkMessenger: Secure End-to-End Encryption and Message Authentication

This documentation provides an overview of the cryptographic modules used in DarkMessenger. Each module implements a different encryption method, ensuring a robust and multi-layered approach to security.

ERK Module (crypto_modules/ERK_module.js)

Combines functionalities from ECIES, RSA, and KYBER modules into a unified cryptography module.

Purpose:

• Provides a comprehensive encryption framework leveraging multiple cryptographic algorithms.
• Facilitates secure key generation, encryption, and decryption using ECIES, RSA, and KYBER methods.

Functionality:

• ECIES Integration:

  • Exports: ECIES_priv_key, ECIES_pub_key, ECIES_encrypt, ECIES_decrypt
  • Implements: Elliptic Curve Integrated Encryption Scheme (ECIES) using the P-521 curve.

• RSA Integration:

  • Exports: RSA_priv_key, RSA_pub_key, RSA_encrypt, RSA_decrypt
  • Implements: RSA encryption with 2048-bit keys and hex codification for PEM.

• KYBER Integration:

  • Exports: KYBER_priv_key, KYBER_pub_key, KYBER_encrypt, KYBER_decrypt
  • Implements: Post-quantum encryption using the Kyber1024 KEM algorithm.

Usage:

// npm install "stringmanolo-erk", 

#!/usr/bin/env node

import {
  ECIES_priv_key, ECIES_pub_key, ECIES_encrypt, ECIES_decrypt,
  RSA_priv_key, RSA_pub_key, RSA_encrypt, RSA_decrypt,
  KYBER_priv_key, KYBER_pub_key, KYBER_encrypt, KYBER_decrypt
} from "stringmanolo-erk";

const plaintext = "Hello, World!";

// Show ouput
const debug = (algo, plaintext, encrypted, decrypted) => {
  console.log(`Data: [${plaintext}]
${algo}_encrypted: [${JSON.stringify(encrypted, null, 2)}]
${algo}_decrypted: [${decrypted}]
`);
};


/* [ START ECIES ] */
/* BOB generated it's keys a couple days ago using:
 * const bob_pub_key = ECIES_pub_key();
 * const bob_priv_key = ECIES_priv_key();
*/
// Bob keys
const bob_ECIES_pub_key = "0401c6ee9cd97ce8790cb1554551894c7ab8f51c8c64b2d90424f831ab02f4537843a0de9cef9ac8ff4de6a4fc6bb38f34a9369993dfe31b22720fe10250780daceedf00d12f021e52441f72d558c89ecf99bab8c955c6ac7cbbb38fc0bb01648acae45c9894c2ec645544ed802ef1e8d785a910f56ddd9e54a1cc9c012be283aa51b93cac";
const bob_ECIES_priv_key = "021f2ae7ba7f30a7a9726bfeeab9a45d8e8e60b9a4d98591c3adcd465bc160992d75e6f412186faf60f5bb7ea1d89cda0535356235177d62f101d853040b885fe5";

/* ALICE generated her publicKey today using:
 * const publicKey = ECIES_pub_key();
*/
const { ciphertext, iv, tag, publicKey } = ECIES_encrypt(plaintext, bob_ECIES_pub_key);
const decryptedText = ECIES_decrypt(ciphertext, iv, tag, publicKey, bob_ECIES_priv_key);

debug("ECIES", plaintext, { ciphertext, iv, tag, publicKey }, decryptedText);
/* [ END ECIES ] */


/* [ START RSA ] */
/* BOB generated it's keys a couple days ago using:
 * const bob_RSA_pub_key = RSA_pub_key();
 * const bob_RSA_priv_key = RSA_priv_key();
*/
// Bob keys
const bob_RSA_pub_key = "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";
const bob_RSA_priv_key = "308204a40201000282010100bae4a70f90ebff858e6549b1b4d088310fd97b3fa0d1a14f9a929e2a6bb02e4e8af1faa236ef2b43a066743025c6ef83f776b09dddcc5a13198563d26dab6ae10a78f53cd40d0bd9102e303e331b2cedd6941503bab7600c19594322ebd7d691debfd472d4f150701bd3c1eecb7af30a8117169178d9afdb77acd1d3cf9c38fd7e4c62dafd3ea39c822fbee7570eec6fc0e43ec6e067dd186fd6592ce772a30bde2e07a1a0c1d491ff4a03acf1347f7af021a91c00a79bddfaf2b1bc2476dd0fa288b824560a870e55b27e1f637a838288524be9c48a8c7cad6ef1fff87d8bf5c5c913747174939a06051fa15c449578ee95222ce0fdc88e679b949a8d21e2a502030100010282010002ee2d616784ba71af667955eae4c9d1e272a6f05136f592cadf697bf6f5765069ca2558d048313de2f60af480a477cd1cfef48226801059d42607873d36cec59f0aaa510d191eefafc582f64d5fabcac1e3cf58358aafb1438a27023fea41e01bd041b0ed93a80ecdf23a21a2a3f7a0c3f3e6f91a7392ad3c03e4195b06bdccfd85f0f15ad99fccd2c5eb43c82375993c712b304423fce9b7f6132664fd9ddec23ec165b678509a721bd07502e66f3ab31628729bc3a89893a7a4f019bf30d8a2d35cb38b3c13b34b8feb6d9fd9546192b45197ae796f788c530f23d6b99a3c432629119e972b353763d5b7bf3f7ea358863c918b958c632591e047f584133902818100e341a3216dc3e52686e929f81170e46a927adf440d46f6a3ab8d86d88f6025e65260d2ca5548d2d26e0f90b65ba567ee0ce260732aaf48fee8cdc9a31285733a091a18a77bf29261cfd5c3f0014441922b0ab275062434ac8c2239271253b05a24c30029e41c74b56d730b1ba1d388e8ea658a66ee10993009d199ab3ed2818902818100d28816f323d1dc24154a6f0f04b36b055105cb06ad47e01d3ac13f54a97389c788a4758f59bfc8525584a1a299eea4563008f1d03fc320ccdd10f959f156a3dcb2bd672ff86513be353739ba4eb00621811e6b58b33e2f4ad07e3ec223319c877527a744139d631432550ef578874a97fd5079b42e673e844e8b81c665489d3d02818100d4d770b5aa5c428e26e4d1cde867d74689125371250e45895cef1c504f5839a6d198a553a334a55f387d938777a61f04b1448418d8ed7a6c6415f8b7a66d1e52489c0c63308f2bd23819797d9b72160794105cbb8598fb4c6fa2cdec6e19bb9d71b8c0ba7b4ebb7000a632cd1a6f4856fcd14522c9ecf9cc28260aca7bf8242102818100aca772babf5b71c01dbdc74a77be743c0df0444a1b7d606c582cf735052a7d89a7a3c7cd61fb07db8dca918bf9d55dec58c45d1b3dcf566cebb6e9e73b26a487700628438cdfc7cb2b7538e0737ba3eb822a623a81f4b37015801313bf2d0683882e96dc1b81ed293905cc98bed9a4f0f48b34e3f1523650e6e13df268499eb9028180583efe7ebaab57806dffde24feb18afb03f30fb5f716a6cf39d0a0d14935e8482115701a075d33a44157c8fc32399656cd291bcdfeb78357b803285be9bf7b1f9e97817f50dd5a83f62dbc5ab55e34f31d231422d3a182bf497014aec4cbfc1606499d8de578b9dd9d56f2bf11339428a0910ebe697345b72db7e759458174da";

const { RSA_ciphertext, RSA_iv, RSA_tag, RSA_publicKey } = RSA_encrypt(plaintext, bob_RSA_pub_key);
const RSA_decryptedText = RSA_decrypt(RSA_ciphertext, RSA_iv, RSA_tag, RSA_publicKey, bob_RSA_priv_key);

debug("RSA", plaintext, { RSA_ciphertext, RSA_iv, RSA_tag, RSA_publicKey }, RSA_decryptedText);
/* [ END RSA ] */


/* [ START KYBER ] */
/* BOB generated it's keys a couple days ago using:
 * const bob_KYBER_pub_key = KYBER_pub_key;
 * const bob_KYBER_priv_key = KYBER_priv_key;
*/
// Bob keys
const bob_KYBER_pub_key = "5f14a19db08f60b5bfd2390c3508a9672574784575611bb28c387a6eea01d6c164314b7cb59ca7c9396a26b143772680c749056e8b56a0037e27d0266d8242ea451c6509668eeb52c9f5bd17754885c2c7ee53b139e292a2184b0f207e43b13162f5cfd86286b0d961a889450705a5b8130fc89466f5234c7970aa99db28e656acbd983184d9956ef25bfa1269ecd08ae3118108b167c28a9dc9d26a177376ea09c029985cfed78b9769a146c89e788a9f34e49134b6102059267178a97be57f0c19a1f5801ca017ab944146cce4918d1c0000a9878d55a26233c77529c6cfc1cb9bb20428770ef9083e88c90081b46d1fd17386d4233c347855921842861218d687f7861ec2996e20a3c5b10664f4c19dd58963482128b13756e9b49290a0c0a303156ac84556aac136dcb47f5bb6d6fc66b851a2c7442cf0763a40cb09f2f8393f4aa525b293c2a54292361ce139616f41913a70afc38a28ad492003ea9c3763a2c3c112f743806bcb0bebba79a06855bc1a8535b2b742459efb84cbb0b6052593881101730ae6085ea8690a84228b7135df3ac159531308635bc03b8cfd76cced9318da21c8447a172ba3895e965075d1056d39344e6582fda048c6961cee99641b2b16c41bb9c5e9be36c179a8b66769eab80fa42f7ab8595cf6ac8669a42444416b78061f285a0a3a700166015593ca6ec68e2c0aa5921aa231512d0886492619c3fc2c6c6ef422c343518645379409aae7b2af16a202b94936e8e455d09c972c94c424293766a46e50e7189e24b4e67a93923506033958622a3264cb3b4fdb9643c776823a3002d39d9a794cb8082803196ff7b926b126739f45246110a2221784b115bd277c2d6e4487c3ebab065cb43e7c9287fca99fa395270b01a70a427b37615f1712093a3b67160be8a7c4b1309f45e59cb1e45adc582b9c3c002bec94ccdbc69d000ed852acfe543f495759141794fbcccc771aa3251c29cabc2c70a022c0f0b722f9890186c00072999be657727989a16069f74b3ae9601d6669b07eb07c317373db93445d62c7da96b324f520dd65720c6cae6eb9bff2400dcc0aa2e86585b4807531b1713fd04f8154838718b616b8706f12abd9430df755a00c5c9b34b735d6b65d59696aef0508b28a1bf702762248ac91f0062ba8cdc4f43991262b046266e3f71c0477837d5bafe9e961b1a78cac6c95f930518465c70b69888b83cd9db05662104b45ab9fe8f1ccf18b45deb23f8622c3fefb24aa362ae981b48eeac1b6182649b8a77fd50b1a5a042ac22117524b2f526881a6943701586390101919352e5a1a24cc8841139349524676360276f01814841ddd72b8406783298434dc40b91a087e9da689fda0cf02b3512653cd480c525b4a10ab34c67c179981791cde14a0c9a0843b6b331a171f99eb05aa9218ae71590af02d1c4b989459c2430689f8c907ebc344cee11ef6b602610a9c7694afc61625c59031ac517774b275be684885957699b35a9c571e3a4839fd722d41d6cf2f337bc71793d8f74f4e90922755a764856922f149e5e61917e4b6f4d8aa231541a017acf928cd337253604a09d53716bb20b99857038de79858ca28afb74f5c490bed891ba8b2a3f41817efe83cea506dca3ba8594b23b4b36f3ffa36e2490ba69aabb5c09a0ea505f361188fd25ab7c7b0ffa70296d4cd80e98a7837c60522cfe456c3c4c24a4131080e24ab74567253173598fc27ae850a74a828f02c2de256a6ad8401d3d6bc1ffa0987b9a0a0176b945579d3fcb9b00c758543836c92cb5ef11aac83ae360496cd561ccfd831bed298c7c8711be94c1a4432f72247abb811f58b9db4d12490276843d22952343c7ab1637c771ff8ab849789383347cc2f06b0b21ab5373199a149acae819b07f0b8b5f4a46c029264bb5ef4ec9d3cba7620d8a3f8226a4997101dd97eefa4333c82c73289794bc52662f401c9bc148f130464310c319587ed0a0efe2b5f0de4c82d313bc9089dcf328df4a3862cc435b46b87976b8c14fb5a2dc5b64f4074ce8203452b67b21cce3bb987541aab11b84421628c6ea249aec08dbef03dcca9a79b604443e186298792732b5009ab8bf0d0930b1588935151bab7702a409c8b566d0081c48c7800186646295c4c221cc89d0047bb445c1976ad9b8c6e671742b0f6ea7598ec03cb865f3800318acd1d8e95ec69059e1e";
const bob_KYBER_priv_key = "1deba582b4860658440e52213f831177f708d3f9be346707f5432b62a28edd4207be83c63583c11b4466aed1b2ec8052ebd900be2794696c10774081b05ba0a2b58ef44507750223bf128934204f13750e3bc26d25bb6789f22ae66b41500342df96b08a970827341c958132bf3bc40fe44f1af925d245728361921baaa8b5aba18b3252a981b55c24204b38b6aea871dba4ce126a03c28894ce235fa25bc1470598af5201e460a4194ab2f9b6267bd2973d5a0860533406c22c42872a606508ee02c276292db80aa3b85a463e7340a206083f2370f08507132607af587a0721497aca15a9067ac3e02f9a915a46819093cca12f693e3a2654e8d6964cb6652a5acc1de837395921ee898a513726fa87489dca23f2526ef5a77bc1881ffa86553fb5a15aa38dfa23587180c5d46a290113320ab77656f0cd42416ba8f614996140faeb4f74c34e379a959916a4ff5cae29452afcf3adbfabcc4728198b778958a6c159a23e29448d7974319bf235c740637deac80dc9bff694872c7c2857e913e5080907eb09bb154067c492be6bc0a20aa83cac7c551177a8e0532a486cb5c5a78df3238464cf49e509e5497bc5c971ec7b2af10c83cf83a7a278a533678cfd1c6de1d77822b515a0b11b14b8182d51c790c09d12144f86624d43a2a3daf3372c4636a574911b9a2c4e85b5e0262b56d4054f210108da3d0fc6a06244ae8993120d11546a59a5ae27a7bd82c6df4660e272271c55983362221d80ab15bc52a6b5b6031b39beaa0f3d14722f08622d6ba251466b9d23c4a03c78ba217ba0698fabc10f3e413981e662e11136436219a2e9a57ffca936772956f2a4080b8500d8b2553a3e3dc9696a8608d6aab1f761836ae2bd96b0b996793283aa52ac08bdbab9853ec6153e05b22adb49189129bb0415636b2156b9776937b9ceec47ed185ba5d72bfdd05a4ba77fc22654310372f886c53569a9c55936b264721bd1a4cb9b22bc316fc98796b6330c78f37fc40ba191665a764243cf3231d327c6c859cb8408b4e4a3cc36d04289a6a3cee1212b5582f454b228eab81ef95720444714982ac2a8686a68413fe238acf4cc766187b05ab56b830d988233d29542d6e588ffbc243ad56bf9aa3c76e8c440092c889849b0ac809578608bfb8ad235af1a2ab7968524d3e6c694897878dc7024125136bb3c17c85e1be40999943326e6c7f6a468a178c821d0521ec9462ac928c2b6c9452bc600175a0fa41ee5565992e5327b91c6ec147a1753977fd187a922abb5874e4c128e431ba9b1179557c2572de6b08c911b115a1513e1a4baf8a6a79c8d86951cf9b62a5cc8534fd40f14d4b2929c4c2c51675c8acd876ac6c6bcb2e82a1c3f37b3c4981c366cab894cca08449cf51710b1a7b9761a086b6675712a591a34022363588cab0b03c329b2d70437366a49d5c2d5ec5453a11e6fd9bd9209bb555c9d19a8494f900a2c9c63d601bdffa16d73e608e2427c9c83a4eb88910fe4918ff11862495f6b017263f2937dd144fe89b47494af0dcbbbea03417979485654a4d232446b565b244cadf9b40b61eba123c32b1c888b8642b23381a7200ba92cb7903ca3731b0444f2ab58835047d398cc3977367dd8a69ce471b6e08c68bc6ed6253fdc9bbf0e2921a7e382f66a9cd59b08bb010167d445b38383b62c38acb4c3676215ce1aacac5310e01a360a7792802c5009f34eb4c3802a3b4f0bd26fc3e2c0b2676226a51f0d37529e198fd5628a05426a3376cb72cc4469800bd19659bbe51c48b3260086be17074f4330c262e440ad64c94e82323d220a34f02548a6003f17602e7cb13f326116a52edfc5c5020444db166d0ce48612743f0d47cd11602788953ffbd3911fd6a0fe37137b68c73b36af83dccc35a0a8dc2aa83aaa172c991c3cc6a1c6b0592af736833cc5d511abf765cf0190be1347117d053f37244ea5ba04a20a0e1e598e65884ff72197495820eab89889422e0fb856823c89b711579035521d19ce48e43181664de5d96c8cd0a36cd064cb57c645d07499f126bb19c7ce4b5687c10f48739baf70cf3e649196e021b9f456aab7ae4d35151239c6cf7077b8244b19458564b64c0127b383651f00a4c6f1859202bb723a848ecf783bd393c8b4dc58502a3e68e34bc518135f14a19db08f60b5bfd2390c3508a9672574784575611bb28c387a6eea01d6c164314b7cb59ca7c9396a26b143772680c749056e8b56a0037e27d0266d8242ea451c6509668eeb52c9f5bd17754885c2c7ee53b139e292a2184b0f207e43b13162f5cfd86286b0d961a889450705a5b8130fc89466f5234c7970aa99db28e656acbd983184d9956ef25bfa1269ecd08ae3118108b167c28a9dc9d26a177376ea09c029985cfed78b9769a146c89e788a9f34e49134b6102059267178a97be57f0c19a1f5801ca017ab944146cce4918d1c0000a9878d55a26233c77529c6cfc1cb9bb20428770ef9083e88c90081b46d1fd17386d4233c347855921842861218d687f7861ec2996e20a3c5b10664f4c19dd58963482128b13756e9b49290a0c0a303156ac84556aac136dcb47f5bb6d6fc66b851a2c7442cf0763a40cb09f2f8393f4aa525b293c2a54292361ce139616f41913a70afc38a28ad492003ea9c3763a2c3c112f743806bcb0bebba79a06855bc1a8535b2b742459efb84cbb0b6052593881101730ae6085ea8690a84228b7135df3ac159531308635bc03b8cfd76cced9318da21c8447a172ba3895e965075d1056d39344e6582fda048c6961cee99641b2b16c41bb9c5e9be36c179a8b66769eab80fa42f7ab8595cf6ac8669a42444416b78061f285a0a3a700166015593ca6ec68e2c0aa5921aa231512d0886492619c3fc2c6c6ef422c343518645379409aae7b2af16a202b94936e8e455d09c972c94c424293766a46e50e7189e24b4e67a93923506033958622a3264cb3b4fdb9643c776823a3002d39d9a794cb8082803196ff7b926b126739f45246110a2221784b115bd277c2d6e4487c3ebab065cb43e7c9287fca99fa395270b01a70a427b37615f1712093a3b67160be8a7c4b1309f45e59cb1e45adc582b9c3c002bec94ccdbc69d000ed852acfe543f495759141794fbcccc771aa3251c29cabc2c70a022c0f0b722f9890186c00072999be657727989a16069f74b3ae9601d6669b07eb07c317373db93445d62c7da96b324f520dd65720c6cae6eb9bff2400dcc0aa2e86585b4807531b1713fd04f8154838718b616b8706f12abd9430df755a00c5c9b34b735d6b65d59696aef0508b28a1bf702762248ac91f0062ba8cdc4f43991262b046266e3f71c0477837d5bafe9e961b1a78cac6c95f930518465c70b69888b83cd9db05662104b45ab9fe8f1ccf18b45deb23f8622c3fefb24aa362ae981b48eeac1b6182649b8a77fd50b1a5a042ac22117524b2f526881a6943701586390101919352e5a1a24cc8841139349524676360276f01814841ddd72b8406783298434dc40b91a087e9da689fda0cf02b3512653cd480c525b4a10ab34c67c179981791cde14a0c9a0843b6b331a171f99eb05aa9218ae71590af02d1c4b989459c2430689f8c907ebc344cee11ef6b602610a9c7694afc61625c59031ac517774b275be684885957699b35a9c571e3a4839fd722d41d6cf2f337bc71793d8f74f4e90922755a764856922f149e5e61917e4b6f4d8aa231541a017acf928cd337253604a09d53716bb20b99857038de79858ca28afb74f5c490bed891ba8b2a3f41817efe83cea506dca3ba8594b23b4b36f3ffa36e2490ba69aabb5c09a0ea505f361188fd25ab7c7b0ffa70296d4cd80e98a7837c60522cfe456c3c4c24a4131080e24ab74567253173598fc27ae850a74a828f02c2de256a6ad8401d3d6bc1ffa0987b9a0a0176b945579d3fcb9b00c758543836c92cb5ef11aac83ae360496cd561ccfd831bed298c7c8711be94c1a4432f72247abb811f58b9db4d12490276843d22952343c7ab1637c771ff8ab849789383347cc2f06b0b21ab5373199a149acae819b07f0b8b5f4a46c029264bb5ef4ec9d3cba7620d8a3f8226a4997101dd97eefa4333c82c73289794bc52662f401c9bc148f130464310c319587ed0a0efe2b5f0de4c82d313bc9089dcf328df4a3862cc435b46b87976b8c14fb5a2dc5b64f4074ce8203452b67b21cce3bb987541aab11b84421628c6ea249aec08dbef03dcca9a79b604443e186298792732b5009ab8bf0d0930b1588935151bab7702a409c8b566d0081c48c7800186646295c4c221cc89d0047bb445c1976ad9b8c6e671742b0f6ea7598ec03cb865f3800318acd1d8e95ec69059e1e45cb6ce709c8ff5d60d5c3fdfd981c7be9f628c0ab1977544e28aca936484e0085a70a4548575ad598ed29d689ebd2d56e533afb183c46cd12522169068f41f1";


/* ALICE generated her publicKey today using:
 * const publicKey = KYBER_pub_key();
*/
const { KYBER_ciphertext, KYBER_iv, KYBER_tag, KYBER_publicKey } = await KYBER_encrypt(plaintext, bob_KYBER_pub_key);

const KYBER_decrypted = await KYBER_decrypt(KYBER_ciphertext, KYBER_iv, KYBER_tag, KYBER_publicKey, bob_KYBER_priv_key);

debug("KYBER", plaintext, { KYBER_ciphertext, KYBER_iv, KYBER_tag, KYBER_publicKey }, KYBER_decrypted);
/* [ END KYBER ] */

ECIES Module (crypto_modules/ECIES_module.js)

Implements Elliptic Curve Integrated Encryption Scheme (ECIES) with the P-521 curve.

Purpose:

1. Generates an ECIES key pair for Bob.
2. Allows Alice to encrypt data using Bob's public key without pre-sharing Alice public key.
3. Allows Bob to decrypt the encrypted data using his private key.

RSA Module (crypto_modules/RSA_module.js)

Implements RSA encryption with 2048-bit keys and uses hex codification for PEM.

Purpose:

1. Generates RSA key pairs.
2. Allows encryption using RSA public key.
3. Allows decryption using RSA private key.

KYBER Module (crypto_modules/KYBER_module.js)

Implements post-quantum encryption using the Kyber1024 KEM algorithm.

Purpose:

1. Generates Kyber key pair for Bob.
2. Allows Alice to encrypt data using Bob's public key without pre-sharing Alice public key.
3. Allows Bob to decrypt the encrypted data using his private key.

MISC

If you get a warning about being unable to use native bindings from KYBER module, check this issue