diff options
| -rw-r--r-- | demos/digest/BIO_f_md.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/demos/digest/BIO_f_md.c b/demos/digest/BIO_f_md.c index 27a733b654..f9abb56766 100644 --- a/demos/digest/BIO_f_md.c +++ b/demos/digest/BIO_f_md.c @@ -42,7 +42,7 @@ int main(int argc, char * argv[]) BIO *bio_digest = NULL, *reading = NULL; EVP_MD *md = NULL; unsigned char buffer[512]; - size_t digest_size; + int digest_size; char *digest_value = NULL; int j; @@ -68,6 +68,11 @@ int main(int argc, char * argv[]) goto cleanup; } digest_size = EVP_MD_get_size(md); + if (digest_size <= 0) { + fprintf(stderr, "EVP_MD_get_size returned invalid size.\n"); + goto cleanup; + } + digest_value = OPENSSL_malloc(digest_size); if (digest_value == NULL) { fprintf(stderr, "Can't allocate %lu bytes for the digest value.\n", (unsigned long)digest_size); |