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huawei: Handle version 4 digest for Honor Watch 4

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* on huawei devices authVersion == 4 means using hichain,
but honor still using simple challenge response and actually
using V1 digest key
This commit is contained in:
Vitaliy Tomin
2025-04-04 22:04:54 +00:00
committed by José Rebelo
parent 1ce16380b8
commit 2538a6e9d3
1 changed files with 7 additions and 2 deletions
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app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/huawei/HuaweiCrypto.java
+7 -2
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@@ -77,6 +77,7 @@ public class HuaweiCrypto {
public static final byte[] MESSAGE_RESPONSE = new byte[]{0x01, 0x10};
public static final byte[] MESSAGE_CHALLENGE = new byte[]{0x01, 0x00};
public static final byte[] MESSAGE_CHALLENGE_V4 = new byte[]{0x04, 0x00};
public static final long ENCRYPTION_COUNTER_MAX = 0xFFFFFFFF;
@@ -105,7 +106,7 @@ public class HuaweiCrypto {
private byte[] getDigestSecret() {
byte[] digest;
if (authVersion == 1) {
if ((authVersion == 1) || (authVersion == 4)) { //version 4 digest used on honor health devices
digest = DIGEST_SECRET_v1.clone();
} else if (authVersion == 2) {
digest = DIGEST_SECRET_v2.clone();
@@ -168,7 +169,11 @@ public class HuaweiCrypto {
}
return computeDigestHiChainLite(MESSAGE_CHALLENGE, secretKey, nonce);
}
return computeDigest(MESSAGE_CHALLENGE, nonce);
if (authVersion == 4) {
return computeDigest(MESSAGE_CHALLENGE_V4, nonce);
} else {
return computeDigest(MESSAGE_CHALLENGE, nonce);
}
}
public byte[] digestResponse(byte[] secretKey, byte[] nonce) throws NoSuchAlgorithmException, InvalidKeyException, InvalidKeySpecException, UnsupportedEncodingException {