chacha.h File Reference

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Data Structures
struct	ChaCha

Typedefs
typedef struct ChaCha	ChaCha

Functions
WOLFSSL_API int	wc_Chacha_SetIV (ChaCha *ctx, const byte *inIv, word32 counter)
	This function sets the initialization vector (nonce) for a ChaCha object, initializing it for use as a cipher. It should be called after the key has been set, using wc_Chacha_SetKey. A difference nonce should be used for each round of encryption.
WOLFSSL_API int	wc_Chacha_Process (ChaCha *ctx, byte *cipher, const byte *plain, word32 msglen)
	This function processes the text from the buffer input, encrypts or decrypts it, and stores the result in the buffer output.
WOLFSSL_API int	wc_Chacha_SetKey (ChaCha *ctx, const byte *key, word32 keySz)
	This function sets the key for a ChaCha object, initializing it for use as a cipher. It should be called before setting the nonce with wc_Chacha_SetIV, and before using it for encryption with wc_Chacha_Process.

Variables
	C

Variable Documentation

C

C

extern

Initial value:

{
#endif
 
 
#define CHACHA_IV_WORDS    3
#define CHACHA_IV_BYTES    (CHACHA_IV_WORDS * sizeof(word32))
 
 
#define CHACHA_CHUNK_WORDS 16
#define CHACHA_CHUNK_BYTES (CHACHA_CHUNK_WORDS * sizeof(word32))
 
#ifdef WOLFSSL_X86_64_BUILD
#if defined(USE_INTEL_SPEEDUP) && !defined(NO_CHACHA_ASM)
#endif
#endif
 
enum {
    CHACHA_ENC_TYPE = WC_CIPHER_CHACHA,    
    CHACHA_MAX_KEY_SZ = 32,
}