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-rw-r--r--src/rs256.c53
1 files changed, 9 insertions, 44 deletions
diff --git a/src/rs256.c b/src/rs256.c
index 59ceb94..8873db4 100644
--- a/src/rs256.c
+++ b/src/rs256.c
@@ -18,54 +18,20 @@
#define get0_RSA(x) EVP_PKEY_get0((x))
#endif
-#if defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER < 0x3050200fL
-static EVP_MD *
-rs256_get_EVP_MD(void)
-{
- const EVP_MD *from;
- EVP_MD *to = NULL;
-
- if ((from = EVP_sha256()) != NULL && (to = malloc(sizeof(*to))) != NULL)
- memcpy(to, from, sizeof(*to));
-
- return (to);
-}
-
-static void
-rs256_free_EVP_MD(EVP_MD *md)
-{
- freezero(md, sizeof(*md));
-}
-#elif OPENSSL_VERSION_NUMBER >= 0x30000000
-static EVP_MD *
-rs256_get_EVP_MD(void)
-{
- return (EVP_MD_fetch(NULL, "SHA2-256", NULL));
-}
-
-static void
-rs256_free_EVP_MD(EVP_MD *md)
-{
- EVP_MD_free(md);
-}
+#if defined(__GNUC__)
+#define PRAGMA(s) _Pragma(s)
#else
+#define PRAGMA(s)
+#endif
+
static EVP_MD *
rs256_get_EVP_MD(void)
{
- const EVP_MD *md;
-
- if ((md = EVP_sha256()) == NULL)
- return (NULL);
-
- return (EVP_MD_meth_dup(md));
-}
-
-static void
-rs256_free_EVP_MD(EVP_MD *md)
-{
- EVP_MD_meth_free(md);
+PRAGMA("GCC diagnostic push")
+PRAGMA("GCC diagnostic ignored \"-Wcast-qual\"")
+ return ((EVP_MD *)EVP_sha256());
+PRAGMA("GCC diagnostic pop")
}
-#endif /* LIBRESSL_VERSION_NUMBER */
static int
decode_bignum(const cbor_item_t *item, void *ptr, size_t len)
@@ -290,7 +256,6 @@ rs256_verify_sig(const fido_blob_t *dgst, EVP_PKEY *pkey,
ok = 0;
fail:
EVP_PKEY_CTX_free(pctx);
- rs256_free_EVP_MD(md);
return (ok);
}