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Simplify encryption code

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This commit is contained in:
Vishnu Mohandas 2020-09-26 02:26:02 +05:30
parent 9f6cfebcb1
commit bd66a9a309
1 changed files with 1 additions and 5 deletions
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6
lib/utils/crypto_util.dart
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@ -72,17 +72,13 @@ class CryptoUtil {
var encryptionTag = Sodium.cryptoSecretstreamXchacha20poly1305TagMessage;
while (
encryptionTag != Sodium.cryptoSecretstreamXchacha20poly1305TagFinal) {
bool isLastBlock = false;
var blockLength = encryptionBlockSize;
if (bytesRead + blockLength >= sourceFileLength) {
blockLength = sourceFileLength - bytesRead;
isLastBlock = true;
encryptionTag = Sodium.cryptoSecretstreamXchacha20poly1305TagFinal;
}
final blockData = await inputFile.read(blockLength);
bytesRead += blockLength;
if (isLastBlock) {
encryptionTag = Sodium.cryptoSecretstreamXchacha20poly1305TagFinal;
}
final encryptedData = Sodium.cryptoSecretstreamXchacha20poly1305Push(
initPushResult.state, blockData, null, encryptionTag);
outputFile.writeFromSync(encryptedData);