Add EVP_MAC API

[oweals/openssl.git] / crypto / include / internal / evp_int.h

diff --git a/crypto/include/internal/evp_int.h b/crypto/include/internal/evp_int.h
index d86aed36f075a61df3ef45dabcd12a57a8ca68fc..5bc94086766c6041f142be204f9487d3554c3557 100644 (file)
--- a/crypto/include/internal/evp_int.h
+++ b/crypto/include/internal/evp_int.h
@@ -112,6 +112,31 @@ extern const EVP_PKEY_METHOD hkdf_pkey_meth;
 extern const EVP_PKEY_METHOD poly1305_pkey_meth;
 extern const EVP_PKEY_METHOD siphash_pkey_meth;
 
+/* struct evp_mac_impl_st is defined by the implementation */
+typedef struct evp_mac_impl_st EVP_MAC_IMPL;
+struct evp_mac_st {
+    int type;
+    EVP_MAC_IMPL *(*new) (void);
+    int (*copy) (EVP_MAC_IMPL *macdst, EVP_MAC_IMPL *macsrc);
+    void (*free) (EVP_MAC_IMPL *macctx);
+    size_t (*size) (EVP_MAC_IMPL *macctx);
+    int (*init) (EVP_MAC_IMPL *macctx);
+    int (*update) (EVP_MAC_IMPL *macctx, const unsigned char *data,
+                   size_t datalen);
+    int (*final) (EVP_MAC_IMPL *macctx, unsigned char *out);
+    int (*ctrl) (EVP_MAC_IMPL *macctx, int cmd, va_list args);
+    int (*ctrl_str) (EVP_MAC_IMPL *macctx, const char *type, const char *value);
+};
+
+/*
+ * This function is internal for now, but can be made external when needed.
+ * The documentation would read:
+ *
+ * EVP_add_mac() adds the MAC implementation C<mac> to the internal
+ * object database.
+ */
+int EVP_add_mac(const EVP_MAC *mac);
+
 struct evp_md_st {
     int type;
     int pkey_type;