Move cmd functions to separate files.

Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>

src/openpgp/cmd_internal_aut.c

@@ -0,0 +1,77 @@
+/*
+ * This file is part of the Pico OpenPGP distribution (https://github.com/polhenarejos/pico-openpgp).
+ * Copyright (c) 2022 Pol Henarejos.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "openpgp.h"
+#include "do.h"
+
+int cmd_internal_aut() {
+    if (P1(apdu) != 0x00 || P2(apdu) != 0x00) {
+        return SW_WRONG_P1P2();
+    }
+    if (!has_pw3 && !has_pw2) {
+        return SW_SECURITY_STATUS_NOT_SATISFIED();
+    }
+    file_t *algo_ef = search_by_fid(algo_aut, NULL, SPECIFY_EF);
+    if (!algo_ef) {
+        return SW_REFERENCE_NOT_FOUND();
+    }
+    const uint8_t *algo = algorithm_attr_rsa2k + 1;
+    if (algo_ef && algo_ef->data) {
+        algo = file_get_data(algo_ef);
+    }
+    file_t *ef = search_by_fid(pk_aut, NULL, SPECIFY_EF);
+    if (!ef) {
+        return SW_REFERENCE_NOT_FOUND();
+    }
+    if (wait_button_pressed(EF_UIF_AUT) == true) {
+        return SW_SECURE_MESSAGE_EXEC_ERROR();
+    }
+    int r = PICOKEY_OK;
+    if (algo[0] == ALGO_RSA) {
+        mbedtls_rsa_context ctx;
+        mbedtls_rsa_init(&ctx);
+        r = load_private_key_rsa(&ctx, ef, true);
+        if (r != PICOKEY_OK) {
+            mbedtls_rsa_free(&ctx);
+            return SW_EXEC_ERROR();
+        }
+        size_t olen = 0;
+        r = rsa_sign(&ctx, apdu.data, apdu.nc, res_APDU, &olen);
+        mbedtls_rsa_free(&ctx);
+        if (r != 0) {
+            return SW_EXEC_ERROR();
+        }
+        res_APDU_size = olen;
+    }
+    else if (algo[0] == ALGO_ECDH || algo[0] == ALGO_ECDSA) {
+        mbedtls_ecdsa_context ctx;
+        mbedtls_ecdsa_init(&ctx);
+        r = load_private_key_ecdsa(&ctx, ef, true);
+        if (r != PICOKEY_OK) {
+            mbedtls_ecdsa_free(&ctx);
+            return SW_EXEC_ERROR();
+        }
+        size_t olen = 0;
+        r = ecdsa_sign(&ctx, apdu.data, apdu.nc, res_APDU, &olen);
+        mbedtls_ecdsa_free(&ctx);
+        if (r != 0) {
+            return SW_EXEC_ERROR();
+        }
+        res_APDU_size = olen;
+    }
+    return SW_OK();
+}