fix: drop support for argon2 based ons

ts/session/apis/snode_api/onsResolve.ts

@@ -6,10 +6,10 @@ import {
   stringToUint8Array,
   toHex,
 } from '../../utils/String';
+import { OnsResolveSubRequest } from './SnodeRequestTypes';
 import { doSnodeBatchRequest } from './batchRequest';
 import { GetNetworkTime } from './getNetworkTime';
 import { getRandomSnode } from './snodePool';
-import { OnsResolveSubRequest } from './SnodeRequestTypes';
 
 // ONS name can have [a-zA-Z0-9_-] except that - is not allowed as start or end
 // do not define a regex but rather create it on the fly to avoid https://stackoverflow.com/questions/3891641/regex-test-only-works-every-other-time
@@ -56,48 +56,15 @@ async function getSessionIDForOnsName(onsNameCase: string) {
     }
     const hexEncodedCipherText = intermediate?.encrypted_value;
 
-    const isArgon2Based = !intermediate?.nonce;
     const ciphertext = fromHexToArray(hexEncodedCipherText);
-    let sessionIDAsData: Uint8Array;
-    let nonce: Uint8Array;
     let key: Uint8Array;
+    // we dropped support for argon2 based ons
 
-    if (isArgon2Based) {
-      // Handle old Argon2-based encryption used before HF16
-      const salt = new Uint8Array(sodium.crypto_pwhash_SALTBYTES);
-      nonce = new Uint8Array(sodium.crypto_secretbox_NONCEBYTES);
-      try {
-        const keyHex = sodium.crypto_pwhash(
-          sodium.crypto_secretbox_KEYBYTES,
-          onsNameLowerCase,
-          salt,
-          sodium.crypto_pwhash_OPSLIMIT_MODERATE,
-          sodium.crypto_pwhash_MEMLIMIT_MODERATE,
-          sodium.crypto_pwhash_ALG_ARGON2ID13,
-          'hex'
-        );
-        if (!keyHex) {
-          throw new Error('ONSresolve: key invalid argon2');
-        }
-        key = fromHexToArray(keyHex);
-      } catch (e) {
-        throw new Error('ONSresolve: Hashing failed');
-      }
-
-      sessionIDAsData = sodium.crypto_secretbox_open_easy(ciphertext, nonce, key);
-      if (!sessionIDAsData) {
-        throw new Error('ONSresolve: Decryption failed');
-      }
-
-      return toHex(sessionIDAsData);
-    }
-
-    // not argon2Based
     const hexEncodedNonce = intermediate.nonce as string;
     if (!hexEncodedNonce) {
       throw new Error('ONSresolve: No hexEncodedNonce');
     }
-    nonce = fromHexToArray(hexEncodedNonce);
+    const nonce = fromHexToArray(hexEncodedNonce);
 
     try {
       key = sodium.crypto_generichash(sodium.crypto_generichash_BYTES, nameAsData, nameHash);
@@ -109,7 +76,7 @@ async function getSessionIDForOnsName(onsNameCase: string) {
       throw new Error('ONSresolve: Hashing failed');
     }
 
-    sessionIDAsData = sodium.crypto_aead_xchacha20poly1305_ietf_decrypt(
+    const sessionIDAsData = sodium.crypto_aead_xchacha20poly1305_ietf_decrypt(
       null,
       ciphertext,
       null,