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Updated on 2026-08-14

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This commit is contained in:
Tangem 2018-07-17 12:48:43 +03:00
parent df94a313e8
commit bc544de0c0
2 changed files with 87 additions and 14 deletions
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33
app/src/main/java/com/tangem/domain/cardReader/FW.java
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@ -41,22 +41,27 @@ public class FW {
public static VerifyCodeRecord selectRandomVerifyCodeBlock(String firmwareVersion) throws IOException {
for(int i=0; i<jaFirmwares.size(); i++) {
JsonObject jsVersion = jaFirmwares.get(i).getAsJsonObject();
if( jsVersion.get("fw").getAsString().equals(firmwareVersion) )
{
VerifyCodeRecord result=new VerifyCodeRecord();
result.hashAlg = "sha-256";
JsonArray jsHashes = jsVersion.get(result.hashAlg).getAsJsonArray();
result.challenge = Util.hexToBytes(jsVersion.get("challenge").getAsString());
int caseIndex= Util.byteArrayToInt(Util.generateRandomBytes(4))%jsHashes.size();
JsonObject jsRecord = jsHashes.get(caseIndex).getAsJsonObject();
result.blockIndex = jsRecord.get("block").getAsInt();
result.blockCount = jsRecord.get("count").getAsInt();
result.digest = Util.hexToBytes(jsRecord.get("digest").getAsString());
return result;
try {
for (int i = 0; i < jaFirmwares.size(); i++) {
JsonObject jsVersion = jaFirmwares.get(i).getAsJsonObject();
if (jsVersion.get("fw").getAsString().equals(firmwareVersion)) {
VerifyCodeRecord result = new VerifyCodeRecord();
result.hashAlg = "sha-256";
JsonArray jsHashes = jsVersion.get(result.hashAlg).getAsJsonArray();
result.challenge = Util.hexToBytes(jsVersion.get("challenge").getAsString());
int caseIndex = (Util.byteArrayToInt(Util.generateRandomBytes(4)) & 0xFFFFFF) % jsHashes.size();
JsonObject jsRecord = jsHashes.get(caseIndex).getAsJsonObject();
result.blockIndex = jsRecord.get("block").getAsInt();
result.blockCount = jsRecord.get("count").getAsInt();
result.digest = Util.hexToBytes(jsRecord.get("digest").getAsString());
return result;
}
}
}
catch (Exception e)
{
e.printStackTrace();
}
return null;
}
}