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Changed encrypted bytes to put tag last which matches the Java Sample #87

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merged 1 commit into from
Oct 7, 2024
Merged

Changed encrypted bytes to put tag last which matches the Java Sample #87

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8 changes: 4 additions & 4 deletions src/Encryption/Codec/EncryptionCodec.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -61,8 +61,8 @@ public Task<IReadOnlyCollection<Payload>> DecodeAsync(IReadOnlyCollection<Payloa

private byte[] Encrypt(byte[] data)
{
// Our byte array will have a const-length nonce, const-length tag, and
// then the encrypted data. In real-world use, one may want to put nonce
// Our byte array will have a const-length nonce, the encrypted data, and
// then a const-length tag. In real-world use, one may want to put nonce
// and/or tag lengths in here.
var bytes = new byte[NonceSize + TagSize + data.Length];

Expand All @@ -73,7 +73,7 @@ private byte[] Encrypt(byte[] data)
// Perform encryption
using (var aes = new AesGcm(key, TagSize))
{
aes.Encrypt(nonceSpan, data, bytes.AsSpan(NonceSize + TagSize), bytes.AsSpan(NonceSize, TagSize));
aes.Encrypt(nonceSpan, data, bytes.AsSpan(NonceSize, data.Length), bytes.AsSpan(NonceSize + data.Length, TagSize));
return bytes;
}
}
Expand All @@ -85,7 +85,7 @@ private byte[] Decrypt(byte[] data)
using (var aes = new AesGcm(key, TagSize))
{
aes.Decrypt(
data.AsSpan(0, NonceSize), data.AsSpan(NonceSize + TagSize), data.AsSpan(NonceSize, TagSize), bytes.AsSpan());
data.AsSpan(0, NonceSize), data.AsSpan(NonceSize, bytes.Length), data.AsSpan(NonceSize + bytes.Length, TagSize), bytes.AsSpan());
return bytes;
}
}
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