sig_out
uint8_t **sig_out, unsigned int *sig_len_out)
*sig_out = NULL;
p = *sig_out = malloc(len);
if (*sig_out == NULL)
if (ctx->sigio && !sig_out(b))
static __owur int sig_out(BIO *b);
*sig_out = sig;
unsigned char **sig_out, size_t *sig_out_len)