App updates for KDF provider conversion.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/9662)

apps/kdf.c

@@ -15,6 +15,7 @@
 #include <openssl/err.h>
 #include <openssl/evp.h>
 #include <openssl/kdf.h>
+#include <openssl/params.h>
 
 typedef enum OPTION_choice {
     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
@@ -34,27 +35,9 @@ const OPTIONS kdf_options[] = {
     {NULL}
 };
 
-static int kdf_ctrl_string(EVP_KDF_CTX *ctx, const char *value)
-{
-    int rv;
-    char *stmp, *vtmp = NULL;
-
-    stmp = OPENSSL_strdup(value);
-    if (stmp == NULL)
-        return -1;
-    vtmp = strchr(stmp, ':');
-    if (vtmp != NULL) {
-        *vtmp = 0;
-        vtmp++;
-    }
-    rv = EVP_KDF_ctrl_str(ctx, stmp, vtmp);
-    OPENSSL_free(stmp);
-    return rv;
-}
-
 int kdf_main(int argc, char **argv)
 {
-    int ret = 1, i, id, out_bin = 0;
+    int ret = 1, out_bin = 0;
     OPTION_CHOICE o;
     STACK_OF(OPENSSL_STRING) *opts = NULL;
     char *prog, *hexout = NULL;
@@ -62,6 +45,7 @@ int kdf_main(int argc, char **argv)
     unsigned char *dkm_bytes = NULL;
     size_t dkm_len = 0;
     BIO *out = NULL;
+    EVP_KDF *kdf = NULL;
     EVP_KDF_CTX *ctx = NULL;
 
     prog = opt_init(argc, argv, kdf_options);
@@ -100,25 +84,31 @@ opthelp:
         goto opthelp;
     }
 
-    id = OBJ_sn2nid(argv[0]);
-    if (id == NID_undef) {
+    if ((kdf = EVP_KDF_fetch(NULL, argv[0], NULL)) == NULL) {
         BIO_printf(bio_err, "Invalid KDF name %s\n", argv[0]);
         goto opthelp;
     }
 
-    ctx = EVP_KDF_CTX_new_id(id);
+    ctx = EVP_KDF_CTX_new(kdf);
     if (ctx == NULL)
         goto err;
 
     if (opts != NULL) {
-        for (i = 0; i < sk_OPENSSL_STRING_num(opts); i++) {
-            char *opt = sk_OPENSSL_STRING_value(opts, i);
-            if (kdf_ctrl_string(ctx, opt) <= 0) {
-                BIO_printf(bio_err, "KDF parameter error '%s'\n", opt);
-                ERR_print_errors(bio_err);
-                goto err;
-            }
+        int ok = 1;
+        OSSL_PARAM *params =
+            app_params_new_from_opts(opts, EVP_KDF_CTX_settable_params(kdf));
+
+        if (params == NULL)
+            goto err;
+
+        if (!EVP_KDF_CTX_set_params(ctx, params)) {
+            BIO_printf(bio_err, "KDF parameter error\n");
+            ERR_print_errors(bio_err);
+            ok = 0;
         }
+        app_params_free(params);
+        if (!ok)
+            goto err;
     }
 
     out = bio_open_default(outfile, 'w', out_bin ? FORMAT_BINARY : FORMAT_TEXT);
@@ -151,6 +141,7 @@ err:
         ERR_print_errors(bio_err);
     OPENSSL_clear_free(dkm_bytes, dkm_len);
     sk_OPENSSL_STRING_free(opts);
+    EVP_KDF_free(kdf);
     EVP_KDF_CTX_free(ctx);
     BIO_free(out);
     OPENSSL_free(hexout);

apps/list.c

@@ -12,6 +12,7 @@
 #include <openssl/err.h>
 #include <openssl/provider.h>
 #include <openssl/safestack.h>
+#include <openssl/kdf.h>
 #include "apps.h"
 #include "app_params.h"
 #include "progs.h"
@@ -193,6 +194,56 @@ static void list_macs(void)
     sk_EVP_MAC_pop_free(macs, EVP_MAC_free);
 }
 
+/*
+ * KDFs and PRFs
+ */
+DEFINE_STACK_OF(EVP_KDF)
+static int kdf_cmp(const EVP_KDF * const *a, const EVP_KDF * const *b)
+{
+    int ret = strcasecmp(EVP_KDF_name(*a), EVP_KDF_name(*b));
+
+    if (ret == 0)
+        ret = strcmp(OSSL_PROVIDER_name(EVP_KDF_provider(*a)),
+                     OSSL_PROVIDER_name(EVP_KDF_provider(*b)));
+
+    return ret;
+}
+
+static void collect_kdfs(EVP_KDF *kdf, void *stack)
+{
+    STACK_OF(EVP_KDF) *kdf_stack = stack;
+
+    sk_EVP_KDF_push(kdf_stack, kdf);
+    EVP_KDF_up_ref(kdf);
+}
+
+static void list_kdfs(void)
+{
+    STACK_OF(EVP_KDF) *kdfs = sk_EVP_KDF_new(kdf_cmp);
+    int i;
+
+    BIO_printf(bio_out, "Provided KDFs and PDFs:\n");
+    EVP_KDF_do_all_ex(NULL, collect_kdfs, kdfs);
+    sk_EVP_KDF_sort(kdfs);
+    for (i = 0; i < sk_EVP_KDF_num(kdfs); i++) {
+        const EVP_KDF *m = sk_EVP_KDF_value(kdfs, i);
+
+        BIO_printf(bio_out, "  %s", EVP_KDF_name(m));
+        BIO_printf(bio_out, " @ %s\n",
+                   OSSL_PROVIDER_name(EVP_KDF_provider(m)));
+
+        if (verbose) {
+            print_param_types("retrievable algorithm parameters",
+                              EVP_KDF_gettable_params(m), 4);
+            print_param_types("retrievable operation parameters",
+                              EVP_KDF_CTX_gettable_params(m), 4);
+            print_param_types("settable operation parameters",
+                              EVP_KDF_CTX_settable_params(m), 4);
+        }
+    }
+    sk_EVP_KDF_pop_free(kdfs, EVP_KDF_free);
+}
+
 static void list_missing_help(void)
 {
     const FUNCTION *fp;
@@ -527,7 +578,7 @@ typedef enum HELPLIST_CHOICE {
     OPT_COMMANDS, OPT_DIGEST_COMMANDS, OPT_MAC_ALGORITHMS, OPT_OPTIONS,
     OPT_DIGEST_ALGORITHMS, OPT_CIPHER_COMMANDS, OPT_CIPHER_ALGORITHMS,
     OPT_PK_ALGORITHMS, OPT_PK_METHOD, OPT_ENGINES, OPT_DISABLED,
-    OPT_MISSING_HELP, OPT_OBJECTS
+    OPT_KDF_ALGORITHMS, OPT_MISSING_HELP, OPT_OBJECTS
 } HELPLIST_CHOICE;
 
 const OPTIONS list_options[] = {
@@ -539,6 +590,8 @@ const OPTIONS list_options[] = {
      "List of message digest commands"},
     {"digest-algorithms", OPT_DIGEST_ALGORITHMS, '-',
      "List of message digest algorithms"},
+    {"kdf-algorithms", OPT_KDF_ALGORITHMS, '-',
+     "List of key derivation and pseudo random function algorithms"},
     {"mac-algorithms", OPT_MAC_ALGORITHMS, '-',
      "List of message authentication code algorithms"},
     {"cipher-commands", OPT_CIPHER_COMMANDS, '-', "List of cipher commands"},
@@ -570,6 +623,7 @@ int list_main(int argc, char **argv)
         unsigned int commands:1;
         unsigned int digest_commands:1;
         unsigned int digest_algorithms:1;
+        unsigned int kdf_algorithms:1;
         unsigned int mac_algorithms:1;
         unsigned int cipher_commands:1;
         unsigned int cipher_algorithms:1;
@@ -607,6 +661,9 @@ opthelp:
         case OPT_DIGEST_ALGORITHMS:
             todo.digest_algorithms = 1;
             break;
+        case OPT_KDF_ALGORITHMS:
+            todo.kdf_algorithms = 1;
+            break;
         case OPT_MAC_ALGORITHMS:
             todo.mac_algorithms = 1;
             break;
@@ -654,6 +711,8 @@ opthelp:
         list_type(FT_md, one);
     if (todo.digest_algorithms)
         list_digests();
+    if (todo.kdf_algorithms)
+        list_kdfs();
     if (todo.mac_algorithms)
         list_macs();
     if (todo.cipher_commands)