5. CMOX_CHACHAPOLY ¶

5.1. ChaCha20-Poly1305 public ¶

group CMOX_CHACHAPOLY_PUBLIC_CONSTANTS

constants

Variables

const cmox_chachapoly_impl_t CMOX_CHACHAPOLY_ENC ¶: Implementation of ChaCha20-Poly1305 encryption (Defined internally).

const cmox_chachapoly_impl_t CMOX_CHACHAPOLY_DEC ¶: Implementation of ChaCha20-Poly1305 decryption (Defined internally).

5.2. ChaCha20-Poly1305 public method ¶

group CMOX_CHACHAPOLY_PUBLIC_METHODS

prototypes

Functions

cmox_cipher_handle_t * cmox_chachapoly_construct ( cmox_chachapoly_handle_t * P_pThis , cmox_chachapoly_impl_t P_impl ) ¶

ChaCha20-Poly1305 constructor.

The function is used for specifying if the algorithm will be used for encryption or decryption.

Parameters :

P_pThis – Pointer to the ChaCha20-Poly1305 handle to initialize
P_impl – Constant that specifies the implementation to use. This parameter can be one of the following values:
- CMOX_CHACHAPOLY_ENC
- CMOX_CHACHAPOLY_DEC

Returns :

cmox_cipher_handle_t* Pointer to a general cipher handle. This will be used by the general purpose cipher functions in order to perform the algorithm

5.3. ChaCha20-Poly1305 public types ¶

group CMOX_CHACHAPOLY_PUBLIC_TYPES

Typedefs

typedef const struct cmox_chachapoly_implStruct_st * cmox_chachapoly_impl_t ¶

ChaCha20-Poly1305 mode implementation.

This type specifies if the algorithm will be used for encryption or decryption. This type is defined as a pointer to a structure, that contains the functions needed for the specific implementation, defined in the library internally

struct cmox_chachapoly_handle_t ¶

#include <cmox_chachapoly.h>

ChaCha20-Poly1305 handle structure definition.

Public Members

cmox_cipher_handle_t super ¶: General cipher handle

size_t mAadLen ¶: Size of the processed AAD

size_t mCipherLen ¶: Size of the processed CipherText

uint32_t rValue [ 5 ] ¶: Internal: value of r

uint32_t hValue [ 5 ] ¶: Internal: value of h

uint32_t pad [ 4 ] ¶: Internal: value of Poly nonce

uint32_t internalState [ 16 ] ¶: Internal: ChaCha Internal State