Mbed TLS v3.6.3
chachapoly.h
Go to the documentation of this file.
1 
15 /*
16  * Copyright The Mbed TLS Contributors
17  * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
18  */
19 
20 #ifndef MBEDTLS_CHACHAPOLY_H
21 #define MBEDTLS_CHACHAPOLY_H
22 #include "mbedtls/private_access.h"
23 
24 #include "mbedtls/build_info.h"
25 
26 /* for shared error codes */
27 #include "mbedtls/poly1305.h"
28 
30 #define MBEDTLS_ERR_CHACHAPOLY_BAD_STATE -0x0054
32 #define MBEDTLS_ERR_CHACHAPOLY_AUTH_FAILED -0x0056
33 
34 #ifdef __cplusplus
35 extern "C" {
36 #endif
37 
38 typedef enum {
41 }
43 
44 #if !defined(MBEDTLS_CHACHAPOLY_ALT)
45 
46 #include "mbedtls/chacha20.h"
47 
51  uint64_t MBEDTLS_PRIVATE(aad_len);
52  uint64_t MBEDTLS_PRIVATE(ciphertext_len);
53  int MBEDTLS_PRIVATE(state);
55 }
57 
58 #else /* !MBEDTLS_CHACHAPOLY_ALT */
59 #include "chachapoly_alt.h"
60 #endif /* !MBEDTLS_CHACHAPOLY_ALT */
61 
105 
114 
127  const unsigned char key[32]);
128 
155  const unsigned char nonce[12],
157 
198  const unsigned char *aad,
199  size_t aad_len);
200 
233  size_t len,
234  const unsigned char *input,
235  unsigned char *output);
236 
254  unsigned char mac[16]);
255 
286  size_t length,
287  const unsigned char nonce[12],
288  const unsigned char *aad,
289  size_t aad_len,
290  const unsigned char *input,
291  unsigned char *output,
292  unsigned char tag[16]);
293 
320  size_t length,
321  const unsigned char nonce[12],
322  const unsigned char *aad,
323  size_t aad_len,
324  const unsigned char tag[16],
325  const unsigned char *input,
326  unsigned char *output);
327 
328 #if defined(MBEDTLS_SELF_TEST)
336 #endif /* MBEDTLS_SELF_TEST */
337 
338 #ifdef __cplusplus
339 }
340 #endif
341 
342 #endif /* MBEDTLS_CHACHAPOLY_H */
This file contains ChaCha20 definitions and functions.
int mbedtls_chachapoly_finish(mbedtls_chachapoly_context *ctx, unsigned char mac[16])
This function finished the ChaCha20-Poly1305 operation and generates the MAC (authentication tag).
struct mbedtls_chachapoly_context mbedtls_chachapoly_context
void mbedtls_chachapoly_init(mbedtls_chachapoly_context *ctx)
This function initializes the specified ChaCha20-Poly1305 context.
int mbedtls_chachapoly_starts(mbedtls_chachapoly_context *ctx, const unsigned char nonce[12], mbedtls_chachapoly_mode_t mode)
This function starts a ChaCha20-Poly1305 encryption or decryption operation.
int mbedtls_chachapoly_setkey(mbedtls_chachapoly_context *ctx, const unsigned char key[32])
This function sets the ChaCha20-Poly1305 symmetric encryption key.
int mbedtls_chachapoly_update(mbedtls_chachapoly_context *ctx, size_t len, const unsigned char *input, unsigned char *output)
Thus function feeds data to be encrypted or decrypted into an on-going ChaCha20-Poly1305 operation.
void mbedtls_chachapoly_free(mbedtls_chachapoly_context *ctx)
This function releases and clears the specified ChaCha20-Poly1305 context.
int mbedtls_chachapoly_encrypt_and_tag(mbedtls_chachapoly_context *ctx, size_t length, const unsigned char nonce[12], const unsigned char *aad, size_t aad_len, const unsigned char *input, unsigned char *output, unsigned char tag[16])
This function performs a complete ChaCha20-Poly1305 authenticated encryption with the previously-set ...
int mbedtls_chachapoly_self_test(int verbose)
The ChaCha20-Poly1305 checkup routine.
mbedtls_chachapoly_mode_t
Definition: chachapoly.h:38
@ MBEDTLS_CHACHAPOLY_ENCRYPT
Definition: chachapoly.h:39
@ MBEDTLS_CHACHAPOLY_DECRYPT
Definition: chachapoly.h:40
int mbedtls_chachapoly_auth_decrypt(mbedtls_chachapoly_context *ctx, size_t length, const unsigned char nonce[12], const unsigned char *aad, size_t aad_len, const unsigned char tag[16], const unsigned char *input, unsigned char *output)
This function performs a complete ChaCha20-Poly1305 authenticated decryption with the previously-set ...
int mbedtls_chachapoly_update_aad(mbedtls_chachapoly_context *ctx, const unsigned char *aad, size_t aad_len)
This function feeds additional data to be authenticated into an ongoing ChaCha20-Poly1305 operation.
Build-time configuration info.
This file contains Poly1305 definitions and functions.
Macro wrapper for struct's members.
#define MBEDTLS_PRIVATE(member)