BN_dec2bn
if (!BN_dec2bn(&bn, prime)) {
if (!BN_dec2bn(bn, p))
ret = BN_dec2bn(&bn, value);
int BN_dec2bn(BIGNUM **a, const char *str);
if (BN_dec2bn(&val, buf) == 0 &&
if (BN_dec2bn(&val, argv[0]) == 0 &&
static int BN_dec2bn(BIGNUM **a, const char *str);