func NewAesDecryptionStream(key []byte, iv []byte) cipher.Stream {
	return NewAesStreamMethod(key, iv, cipher.NewCFBDecrypter)
}
NewAesDecryptionStream creates a new AES encryption stream based on given key and IV.
Caller must ensure the length of key and IV is either 16, 24 or 32 bytes.
package crypto
import (
	"crypto/aes"
	"crypto/cipher"
	"github.com/v2fly/v2ray-core/v4/common"
)