Added EVP_KDF (similiar to the EVP_MAC)

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8808)

1 files changed, 32 insertions, 1 deletions

diff --git a/crypto/evp/names.c b/crypto/evp/names.c
index 4e17926165..5237bcaf24 100644
--- a/crypto/evp/names.c
+++ b/crypto/evp/names.c
@@ -10,6 +10,7 @@
 #include <stdio.h>
 #include "internal/cryptlib.h"
 #include <openssl/evp.h>
+#include <openssl/kdf.h>
 #include "internal/objects.h"
 #include <openssl/x509.h>
 #include "internal/evp_int.h"
@@ -71,6 +72,23 @@ int EVP_add_mac(const EVP_MAC *m)
     return r;
 }
 
+/* TODO(3.0) Is this needed after changing to providers? */
+int EVP_add_kdf(const EVP_KDF *k)
+{
+    int r;
+
+    if (k == NULL)
+        return 0;
+
+    r = OBJ_NAME_add(OBJ_nid2sn(k->type), OBJ_NAME_TYPE_KDF_METH,
+                     (const char *)k);
+    if (r == 0)
+        return 0;
+    r = OBJ_NAME_add(OBJ_nid2ln(k->type), OBJ_NAME_TYPE_KDF_METH,
+                     (const char *)k);
+    return r;
+}
+
 const EVP_CIPHER *EVP_get_cipherbyname(const char *name)
 {
     const EVP_CIPHER *cp;
@@ -104,9 +122,22 @@ const EVP_MAC *EVP_get_macbyname(const char *name)
     return mp;
 }
 
+/* TODO(3.0) Is this API needed after implementing providers? */
+const EVP_KDF *EVP_get_kdfbyname(const char *name)
+{
+    const EVP_KDF *kdf;
+
+    if (!OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_KDFS, NULL))
+        return NULL;
+
+    kdf = (const EVP_KDF *)OBJ_NAME_get(name, OBJ_NAME_TYPE_KDF_METH);
+    return kdf;
+}
+
 void evp_cleanup_int(void)
 {
     OBJ_NAME_cleanup(OBJ_NAME_TYPE_MAC_METH);
+    OBJ_NAME_cleanup(OBJ_NAME_TYPE_KDF_METH);
     OBJ_NAME_cleanup(OBJ_NAME_TYPE_CIPHER_METH);
     OBJ_NAME_cleanup(OBJ_NAME_TYPE_MD_METH);
     /*
@@ -207,6 +238,7 @@ void EVP_MD_do_all_sorted(void (*fn) (const EVP_MD *md,
     OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_MD_METH, do_all_md_fn, &dc);
 }
 
+/* TODO(3.0) Are these do_all API's needed for MAC? */
 struct doall_mac {
     void *arg;
     void (*fn) (const EVP_MAC *ciph,
@@ -250,4 +282,3 @@ void EVP_MAC_do_all_sorted(void (*fn)
     dc.arg = arg;
     OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_MAC_METH, do_all_mac_fn, &dc);
 }
-