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TOMOYO Linux Cross Reference
Linux/include/crypto/poly1305.h

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  1 /*
  2  * Common values for the Poly1305 algorithm
  3  */
  4 
  5 #ifndef _CRYPTO_POLY1305_H
  6 #define _CRYPTO_POLY1305_H
  7 
  8 #include <linux/types.h>
  9 #include <linux/crypto.h>
 10 
 11 #define POLY1305_BLOCK_SIZE     16
 12 #define POLY1305_KEY_SIZE       32
 13 #define POLY1305_DIGEST_SIZE    16
 14 
 15 struct poly1305_desc_ctx {
 16         /* key */
 17         u32 r[5];
 18         /* finalize key */
 19         u32 s[4];
 20         /* accumulator */
 21         u32 h[5];
 22         /* partial buffer */
 23         u8 buf[POLY1305_BLOCK_SIZE];
 24         /* bytes used in partial buffer */
 25         unsigned int buflen;
 26         /* r key has been set */
 27         bool rset;
 28         /* s key has been set */
 29         bool sset;
 30 };
 31 
 32 int crypto_poly1305_init(struct shash_desc *desc);
 33 int crypto_poly1305_setkey(struct crypto_shash *tfm,
 34                            const u8 *key, unsigned int keylen);
 35 unsigned int crypto_poly1305_setdesckey(struct poly1305_desc_ctx *dctx,
 36                                         const u8 *src, unsigned int srclen);
 37 int crypto_poly1305_update(struct shash_desc *desc,
 38                            const u8 *src, unsigned int srclen);
 39 int crypto_poly1305_final(struct shash_desc *desc, u8 *dst);
 40 
 41 #endif
 42 

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