BLAKE2S_KEYBYTES
#define BLAKE2_KEYBYTES BLAKE2S_KEYBYTES
.keysize = BLAKE2S_KEYBYTES,
return (klen <= BLAKE2S_KEYBYTES);
CTASSERT((size_t)BLAKE2B_KEYBYTES > (size_t)BLAKE2S_KEYBYTES);
static uint8_t key2s[BLAKE2S_KEYBYTES];