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| 2 | |
| 3 | * Copyright (C) 2015-2019 Jason A. Donenfeld <[email protected]>. All Rights Reserved.
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| 4 |
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| 5 |
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| 6 | #ifndef __CHACHA20POLY1305_H
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| 7 | #define __CHACHA20POLY1305_H
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| 8 |
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| 9 | #include <linux/types.h>
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| 10 | #include <linux/scatterlist.h>
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| 11 |
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| 12 | enum chacha20poly1305_lengths {
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| 13 | XCHACHA20POLY1305_NONCE_SIZE = 24,
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| 14 | CHACHA20POLY1305_KEY_SIZE = 32,
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| 15 | CHACHA20POLY1305_AUTHTAG_SIZE = 16
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| 16 | };
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| 17 |
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| 18 | void chacha20poly1305_encrypt(u8 *dst, const u8 *src, const size_t src_len,
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| 19 | const u8 *ad, const size_t ad_len,
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| 20 | const u64 nonce,
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| 21 | const u8 key[at_least CHACHA20POLY1305_KEY_SIZE]);
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| 22 |
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| 23 | bool __must_check
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| 24 | chacha20poly1305_decrypt(u8 *dst, const u8 *src, const size_t src_len,
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| 25 | const u8 *ad, const size_t ad_len, const u64 nonce,
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| 26 | const u8 key[at_least CHACHA20POLY1305_KEY_SIZE]);
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| 27 |
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| 28 | void xchacha20poly1305_encrypt(u8 *dst, const u8 *src, const size_t src_len,
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| 29 | const u8 *ad, const size_t ad_len,
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| 30 | const u8 nonce[at_least XCHACHA20POLY1305_NONCE_SIZE],
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| 31 | const u8 key[at_least CHACHA20POLY1305_KEY_SIZE]);
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| 32 |
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| 33 | bool __must_check xchacha20poly1305_decrypt(
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| 34 | u8 *dst, const u8 *src, const size_t src_len,
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| 35 | const u8 *ad, const size_t ad_len,
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| 36 | const u8 nonce[at_least XCHACHA20POLY1305_NONCE_SIZE],
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| 37 | const u8 key[at_least CHACHA20POLY1305_KEY_SIZE]);
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| 38 |
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| 39 | bool chacha20poly1305_encrypt_sg_inplace(struct scatterlist *src, size_t src_len,
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| 40 | const u8 *ad, const size_t ad_len,
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| 41 | const u64 nonce,
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| 42 | const u8 key[at_least CHACHA20POLY1305_KEY_SIZE]);
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| 43 |
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| 44 | bool chacha20poly1305_decrypt_sg_inplace(struct scatterlist *src, size_t src_len,
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| 45 | const u8 *ad, const size_t ad_len,
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| 46 | const u64 nonce,
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| 47 | const u8 key[at_least CHACHA20POLY1305_KEY_SIZE]);
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| 48 |
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| 49 | #endif
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