diff options
| author | Eric Biggers <ebiggers@google.com> | 2019-06-02 22:47:14 -0700 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-06-13 14:31:40 +0800 |
| commit | 860ab2e50204c41e713c54c752617d2da57f0fd7 (patch) | |
| tree | 925afd2b64bb253f4963c9b6154ffb3306870824 | |
| parent | 76cadf2244518d3b1610082d037b01e2651ea402 (diff) | |
crypto: chacha - constify ctx and iv arguments
Constify the ctx and iv arguments to crypto_chacha_init() and the
various chacha*_stream_xor() functions. This makes it clear that they
are not modified.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | arch/arm/crypto/chacha-neon-glue.c | 2 | ||||
| -rw-r--r-- | arch/arm64/crypto/chacha-neon-glue.c | 2 | ||||
| -rw-r--r-- | arch/x86/crypto/chacha_glue.c | 2 | ||||
| -rw-r--r-- | crypto/chacha_generic.c | 4 | ||||
| -rw-r--r-- | include/crypto/chacha.h | 2 |
5 files changed, 6 insertions, 6 deletions
diff --git a/arch/arm/crypto/chacha-neon-glue.c b/arch/arm/crypto/chacha-neon-glue.c index 48a89537b828..a8e9b534c8da 100644 --- a/arch/arm/crypto/chacha-neon-glue.c +++ b/arch/arm/crypto/chacha-neon-glue.c @@ -63,7 +63,7 @@ static void chacha_doneon(u32 *state, u8 *dst, const u8 *src, } static int chacha_neon_stream_xor(struct skcipher_request *req, - struct chacha_ctx *ctx, u8 *iv) + const struct chacha_ctx *ctx, const u8 *iv) { struct skcipher_walk walk; u32 state[16]; diff --git a/arch/arm64/crypto/chacha-neon-glue.c b/arch/arm64/crypto/chacha-neon-glue.c index 82029cda2e77..1495d2b18518 100644 --- a/arch/arm64/crypto/chacha-neon-glue.c +++ b/arch/arm64/crypto/chacha-neon-glue.c @@ -60,7 +60,7 @@ static void chacha_doneon(u32 *state, u8 *dst, const u8 *src, } static int chacha_neon_stream_xor(struct skcipher_request *req, - struct chacha_ctx *ctx, u8 *iv) + const struct chacha_ctx *ctx, const u8 *iv) { struct skcipher_walk walk; u32 state[16]; diff --git a/arch/x86/crypto/chacha_glue.c b/arch/x86/crypto/chacha_glue.c index 4967ad620775..7276b7ef14ec 100644 --- a/arch/x86/crypto/chacha_glue.c +++ b/arch/x86/crypto/chacha_glue.c @@ -128,7 +128,7 @@ static void chacha_dosimd(u32 *state, u8 *dst, const u8 *src, } static int chacha_simd_stream_xor(struct skcipher_walk *walk, - struct chacha_ctx *ctx, u8 *iv) + const struct chacha_ctx *ctx, const u8 *iv) { u32 *state, state_buf[16 + 2] __aligned(8); int next_yield = 4096; /* bytes until next FPU yield */ diff --git a/crypto/chacha_generic.c b/crypto/chacha_generic.c index d2ec04997832..d283bd3bdb60 100644 --- a/crypto/chacha_generic.c +++ b/crypto/chacha_generic.c @@ -36,7 +36,7 @@ static void chacha_docrypt(u32 *state, u8 *dst, const u8 *src, } static int chacha_stream_xor(struct skcipher_request *req, - struct chacha_ctx *ctx, u8 *iv) + const struct chacha_ctx *ctx, const u8 *iv) { struct skcipher_walk walk; u32 state[16]; @@ -60,7 +60,7 @@ static int chacha_stream_xor(struct skcipher_request *req, return err; } -void crypto_chacha_init(u32 *state, struct chacha_ctx *ctx, u8 *iv) +void crypto_chacha_init(u32 *state, const struct chacha_ctx *ctx, const u8 *iv) { state[0] = 0x61707865; /* "expa" */ state[1] = 0x3320646e; /* "nd 3" */ diff --git a/include/crypto/chacha.h b/include/crypto/chacha.h index 1fc70a69d550..d1e723c6a37d 100644 --- a/include/crypto/chacha.h +++ b/include/crypto/chacha.h @@ -41,7 +41,7 @@ static inline void chacha20_block(u32 *state, u8 *stream) } void hchacha_block(const u32 *in, u32 *out, int nrounds); -void crypto_chacha_init(u32 *state, struct chacha_ctx *ctx, u8 *iv); +void crypto_chacha_init(u32 *state, const struct chacha_ctx *ctx, const u8 *iv); int crypto_chacha20_setkey(struct crypto_skcipher *tfm, const u8 *key, unsigned int keysize); |