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Linux/include/crypto/internal/chacha.h

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Diff markup

Differences between /include/crypto/internal/chacha.h (Version linux-6.12-rc7) and /include/crypto/internal/chacha.h (Version linux-6.2.16)


  1 /* SPDX-License-Identifier: GPL-2.0 */              1 /* SPDX-License-Identifier: GPL-2.0 */
  2                                                     2 
  3 #ifndef _CRYPTO_INTERNAL_CHACHA_H                   3 #ifndef _CRYPTO_INTERNAL_CHACHA_H
  4 #define _CRYPTO_INTERNAL_CHACHA_H                   4 #define _CRYPTO_INTERNAL_CHACHA_H
  5                                                     5 
  6 #include <crypto/chacha.h>                          6 #include <crypto/chacha.h>
  7 #include <crypto/internal/skcipher.h>               7 #include <crypto/internal/skcipher.h>
  8 #include <linux/crypto.h>                           8 #include <linux/crypto.h>
  9                                                     9 
 10 struct chacha_ctx {                                10 struct chacha_ctx {
 11         u32 key[8];                                11         u32 key[8];
 12         int nrounds;                               12         int nrounds;
 13 };                                                 13 };
 14                                                    14 
 15 static inline int chacha_setkey(struct crypto_     15 static inline int chacha_setkey(struct crypto_skcipher *tfm, const u8 *key,
 16                                 unsigned int k     16                                 unsigned int keysize, int nrounds)
 17 {                                                  17 {
 18         struct chacha_ctx *ctx = crypto_skciph     18         struct chacha_ctx *ctx = crypto_skcipher_ctx(tfm);
 19         int i;                                     19         int i;
 20                                                    20 
 21         if (keysize != CHACHA_KEY_SIZE)            21         if (keysize != CHACHA_KEY_SIZE)
 22                 return -EINVAL;                    22                 return -EINVAL;
 23                                                    23 
 24         for (i = 0; i < ARRAY_SIZE(ctx->key);      24         for (i = 0; i < ARRAY_SIZE(ctx->key); i++)
 25                 ctx->key[i] = get_unaligned_le     25                 ctx->key[i] = get_unaligned_le32(key + i * sizeof(u32));
 26                                                    26 
 27         ctx->nrounds = nrounds;                    27         ctx->nrounds = nrounds;
 28         return 0;                                  28         return 0;
 29 }                                                  29 }
 30                                                    30 
 31 static inline int chacha20_setkey(struct crypt     31 static inline int chacha20_setkey(struct crypto_skcipher *tfm, const u8 *key,
 32                                   unsigned int     32                                   unsigned int keysize)
 33 {                                                  33 {
 34         return chacha_setkey(tfm, key, keysize     34         return chacha_setkey(tfm, key, keysize, 20);
 35 }                                                  35 }
 36                                                    36 
 37 static inline int chacha12_setkey(struct crypt     37 static inline int chacha12_setkey(struct crypto_skcipher *tfm, const u8 *key,
 38                                   unsigned int     38                                   unsigned int keysize)
 39 {                                                  39 {
 40         return chacha_setkey(tfm, key, keysize     40         return chacha_setkey(tfm, key, keysize, 12);
 41 }                                                  41 }
 42                                                    42 
 43 #endif /* _CRYPTO_CHACHA_H */                      43 #endif /* _CRYPTO_CHACHA_H */
 44                                                    44 

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