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Refactor array creation to a function.

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This commit is contained in:
Greyson Parrelli
2023-05-15 13:21:57 -04:00
parent 802b179880
commit 02431c6ef4
2 changed files with 11 additions and 3 deletions
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4
app/src/main/java/org/thoughtcrime/securesms/registration/secondary/DeviceNameCipher.kt
View File

@@ -27,7 +27,7 @@ object DeviceNameCipher {
val cipherKey: ByteArray = computeCipherKey(masterSecret, syntheticIv)
val cipher = Cipher.getInstance("AES/CTR/NoPadding")
cipher.init(Cipher.ENCRYPT_MODE, SecretKeySpec(cipherKey, "AES"), IvParameterSpec(ByteArray(16)))
cipher.init(Cipher.ENCRYPT_MODE, SecretKeySpec(cipherKey, "AES"), IvParameterSpec(createEmptyByteArray(16)))
val cipherText = cipher.doFinal(plaintext)
return DeviceName(
@@ -60,4 +60,6 @@ object DeviceNameCipher {
ivMac.init(SecretKeySpec(syntheticIvKey, "HmacSHA256"))
return ivMac.doFinal(plaintext).sliceArray(0 until SYNTHETIC_IV_LENGTH)
}
private fun createEmptyByteArray(length: Int): ByteArray = ByteArray(length)
}

10
libsignal/service/src/main/java/org/whispersystems/signalservice/api/crypto/UnidentifiedAccess.java
View File

@@ -4,6 +4,7 @@ package org.whispersystems.signalservice.api.crypto;
import org.signal.libsignal.metadata.certificate.InvalidCertificateException;
import org.signal.libsignal.metadata.certificate.SenderCertificate;
import org.signal.libsignal.protocol.util.ByteUtil;
import org.signal.libsignal.zkgroup.internal.ByteArray;
import org.signal.libsignal.zkgroup.profiles.ProfileKey;
import java.security.InvalidAlgorithmParameterException;
@@ -50,8 +51,8 @@ public class UnidentifiedAccess {
public static byte[] deriveAccessKeyFrom(ProfileKey profileKey) {
try {
byte[] nonce = new byte[12];
byte[] input = new byte[16];
byte[] nonce = createEmptyByteArray(12);
byte[] input = createEmptyByteArray(16);
Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(profileKey.serialize(), "AES"), new GCMParameterSpec(128, nonce));
@@ -63,4 +64,9 @@ public class UnidentifiedAccess {
throw new AssertionError(e);
}
}
private static byte[] createEmptyByteArray(int length) {
return new byte[length];
}
}