KEY_CONTEXT_HDR_SALT_AND_PAD
context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + key_len) >> 4;
context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD + key_len
context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +
context_size = (KEY_CONTEXT_HDR_SALT_AND_PAD +