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

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  1 /* SPDX-License-Identifier: GPL-2.0 */
  2 /*
  3  * Common values for the Poly1305 algorithm
  4  */
  5 
  6 #ifndef _CRYPTO_POLY1305_H
  7 #define _CRYPTO_POLY1305_H
  8 
  9 #include <linux/types.h>
 10 #include <linux/crypto.h>
 11 
 12 #define POLY1305_BLOCK_SIZE     16
 13 #define POLY1305_KEY_SIZE       32
 14 #define POLY1305_DIGEST_SIZE    16
 15 
 16 struct poly1305_desc_ctx {
 17         /* key */
 18         u32 r[5];
 19         /* finalize key */
 20         u32 s[4];
 21         /* accumulator */
 22         u32 h[5];
 23         /* partial buffer */
 24         u8 buf[POLY1305_BLOCK_SIZE];
 25         /* bytes used in partial buffer */
 26         unsigned int buflen;
 27         /* r key has been set */
 28         bool rset;
 29         /* s key has been set */
 30         bool sset;
 31 };
 32 
 33 int crypto_poly1305_init(struct shash_desc *desc);
 34 unsigned int crypto_poly1305_setdesckey(struct poly1305_desc_ctx *dctx,
 35                                         const u8 *src, unsigned int srclen);
 36 int crypto_poly1305_update(struct shash_desc *desc,
 37                            const u8 *src, unsigned int srclen);
 38 int crypto_poly1305_final(struct shash_desc *desc, u8 *dst);
 39 
 40 #endif
 41 

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