1 files changed, 16 insertions, 0 deletions

diff --git a/components/negentropy_lib/compat/openssl/sha.h b/components/negentropy_lib/compat/openssl/sha.h
new file mode 100644
index 0000000..b0881c1
--- /dev/null
+++ b/components/negentropy_lib/compat/openssl/sha.h
@@ -0,0 +1,16 @@
+#ifndef OPENSSL_SHA_COMPAT_H
+#define OPENSSL_SHA_COMPAT_H
+
+#include "mbedtls/sha256.h"
+#include <stddef.h>
+
+#define SHA256_DIGEST_LENGTH 32
+
+static inline int SHA256_compat(const unsigned char *d, size_t n, unsigned char *md)
+{
+    return mbedtls_sha256(d, n, md, 0);
+}
+
+#define SHA256 SHA256_compat
+
+#endif