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| author |   Eric Biggers <ebiggers@google.com> | 2018-01-05 11:09:58 -0800 |
|---|---|---|
| committer |   Herbert Xu <herbert@gondor.apana.org.au> | 2018-01-12 23:03:42 +1100 |
| commit | eb772f37ae8163a89e28a435f6a18742ae06653b (patch) | |
| tree | 3f0561e7ee5d9944f0f7d077ba1168c7d5dfae32 /include/crypto | |
| parent | crypto: salsa20-generic - cleanup and convert to skcipher API (diff) | |
| download | linux-dev-eb772f37ae8163a89e28a435f6a18742ae06653b.tar.xz linux-dev-eb772f37ae8163a89e28a435f6a18742ae06653b.zip | |
crypto: salsa20 - export generic helpers
Export the Salsa20 constants, transform context, and initialization
functions so that they can be reused by the x86 implementation.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/crypto')
| -rw-r--r-- | include/crypto/salsa20.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/crypto/salsa20.h b/include/crypto/salsa20.h new file mode 100644 index 000000000000..19ed48aefc86 --- /dev/null +++ b/include/crypto/salsa20.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Common values for the Salsa20 algorithm + */ + +#ifndef _CRYPTO_SALSA20_H +#define _CRYPTO_SALSA20_H + +#include <linux/types.h> + +#define SALSA20_IV_SIZE 8 +#define SALSA20_MIN_KEY_SIZE 16 +#define SALSA20_MAX_KEY_SIZE 32 +#define SALSA20_BLOCK_SIZE 64 + +struct crypto_skcipher; + +struct salsa20_ctx { + u32 initial_state[16]; +}; + +void crypto_salsa20_init(u32 *state, const struct salsa20_ctx *ctx, + const u8 *iv); +int crypto_salsa20_setkey(struct crypto_skcipher *tfm, const u8 *key, + unsigned int keysize); + +#endif /* _CRYPTO_SALSA20_H */ |