diff options
| author | Martin Willi <martin@strongswan.org> | 2015-07-16 19:14:05 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2015-07-17 21:20:26 +0800 |
| commit | 2546f811ef45fc47fcb65531bea98beeed0c97cc (patch) | |
| tree | 953ec34e28547cb648f131bde32cb842d7348920 /include/crypto | |
| parent | 6692cbc28e88b4cbffaab84b82bfff888c03ed3a (diff) | |
crypto: poly1305 - Export common Poly1305 helpers
As architecture specific drivers need a software fallback, export Poly1305
init/update/final functions together with some helpers in a header file.
Signed-off-by: Martin Willi <martin@strongswan.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/crypto')
| -rw-r--r-- | include/crypto/poly1305.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/include/crypto/poly1305.h b/include/crypto/poly1305.h new file mode 100644 index 000000000000..894df59b74e4 --- /dev/null +++ b/include/crypto/poly1305.h @@ -0,0 +1,41 @@ +/* + * Common values for the Poly1305 algorithm + */ + +#ifndef _CRYPTO_POLY1305_H +#define _CRYPTO_POLY1305_H + +#include <linux/types.h> +#include <linux/crypto.h> + +#define POLY1305_BLOCK_SIZE 16 +#define POLY1305_KEY_SIZE 32 +#define POLY1305_DIGEST_SIZE 16 + +struct poly1305_desc_ctx { + /* key */ + u32 r[5]; + /* finalize key */ + u32 s[4]; + /* accumulator */ + u32 h[5]; + /* partial buffer */ + u8 buf[POLY1305_BLOCK_SIZE]; + /* bytes used in partial buffer */ + unsigned int buflen; + /* r key has been set */ + bool rset; + /* s key has been set */ + bool sset; +}; + +int crypto_poly1305_init(struct shash_desc *desc); +int crypto_poly1305_setkey(struct crypto_shash *tfm, + const u8 *key, unsigned int keylen); +unsigned int crypto_poly1305_setdesckey(struct poly1305_desc_ctx *dctx, + const u8 *src, unsigned int srclen); +int crypto_poly1305_update(struct shash_desc *desc, + const u8 *src, unsigned int srclen); +int crypto_poly1305_final(struct shash_desc *desc, u8 *dst); + +#endif |