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Co-authored-by: NaLan ZeYu <nalanzeyu@gmail.com>
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@ -2,8 +2,8 @@ package crypto
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import (
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"crypto/cipher"
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"crypto/rand"
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"io"
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"math/rand"
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"github.com/xtls/xray-core/common"
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"github.com/xtls/xray-core/common/buf"
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@ -265,7 +265,8 @@ func (w *AuthenticationWriter) seal(b []byte) (*buf.Buffer, error) {
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return nil, err
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}
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if paddingSize > 0 {
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// With size of the chunk and padding length encrypted, the content of padding doesn't matter much.
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// These paddings will send in clear text.
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// To avoid leakage of PRNG internal state, a cryptographically secure PRNG should be used.
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paddingBytes := eb.Extend(paddingSize)
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common.Must2(rand.Read(paddingBytes))
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}
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