add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/include/crypto/null.h
..
..
@@ -9,7 +9,7 @@
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 #define NULL_DIGEST_SIZE	0
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 #define NULL_IV_SIZE		0
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-struct crypto_skcipher *crypto_get_default_null_skcipher(void);
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+struct crypto_sync_skcipher *crypto_get_default_null_skcipher(void);
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 void crypto_put_default_null_skcipher(void);
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 #endif