L<openssl_user_macros(7)>:
unsigned char *HMAC(const EVP_MD *evp_md, const void *key,
- int key_len, const unsigned char *d, int n,
+ int key_len, const unsigned char *d, size_t n,
unsigned char *md, unsigned int *md_len);
HMAC_CTX *HMAC_CTX_new(void);
int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int key_len,
const EVP_MD *md, ENGINE *impl);
- int HMAC_Update(HMAC_CTX *ctx, const unsigned char *data, int len);
+ int HMAC_Update(HMAC_CTX *ctx, const unsigned char *data, size_t len);
int HMAC_Final(HMAC_CTX *ctx, unsigned char *md, unsigned int *len);
void HMAC_CTX_free(HMAC_CTX *ctx);