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Added DataFile.chunkHashes() method which appends all hashes into a single byte array (32 bytes / 256 bits each).

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This commit is contained in:
CalDescent 2021-07-02 08:54:05 +01:00
parent 28425efbe7
commit cc449f9304
1 changed files with 25 additions and 0 deletions
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25
src/main/java/org/qortal/storage/DataFile.java
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@ -369,6 +369,31 @@ public class DataFile {
return null;
}
public byte[] chunkHashes() {
if (this.chunks != null && this.chunks.size() > 0) {
// Return null if we only have one chunk, with the same hash as the parent
if (this.digest().equals(this.chunks.get(0).digest())) {
return null;
}
try {
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
for (DataFileChunk chunk : this.chunks) {
byte[] chunkHash = chunk.digest();
if (chunkHash.length != 32) {
LOGGER.info("Invalid chunk hash length: {}", chunkHash.length);
throw new IllegalStateException("Invalid chunk hash length");
}
outputStream.write(chunk.digest());
}
return outputStream.toByteArray();
} catch (IOException e) {
return null;
}
}
return null;
}
public String base58Digest() {
if (this.digest() != null) {
return Base58.encode(this.digest());