ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/package/utils/uencrypt/src/uencrypt.c b/package/utils/uencrypt/src/uencrypt.c
new file mode 100644
index 0000000..a49db6e
--- /dev/null
+++ b/package/utils/uencrypt/src/uencrypt.c
@@ -0,0 +1,105 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright (C) 2023 Eneas Ulir de Queiroz
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "uencrypt.h"
+
+static void check_enc_dec(const int enc)
+{
+ if (enc == -1)
+ return;
+ fprintf(stderr, "Error: both -d and -e were specified.\n");
+ exit(EXIT_FAILURE);
+}
+
+static void show_usage(const char* name)
+{
+ fprintf(stderr, "Usage: %s: [-d | -e] [-n] -k key [-i iv] [-c cipher]\n"
+ "-d = decrypt; -e = encrypt; -n = no padding\n", name);
+}
+
+static void uencrypt_clear_free(void *ptr, size_t len)
+{
+ if (ptr) {
+ memset(ptr, 0, len);
+ free(ptr);
+ }
+}
+
+int main(int argc, char *argv[])
+{
+ int enc = -1;
+ unsigned char *iv = NULL;
+ unsigned char *key = NULL;
+ long keylen = 0, ivlen = 0;
+ int opt;
+ int padding = 1;
+ const cipher_t *cipher = get_default_cipher();
+ ctx_t* ctx;
+ int ret = EXIT_FAILURE;
+
+ while ((opt = getopt(argc, argv, "c:dei:k:n")) != -1) {
+ switch (opt) {
+ case 'c':
+ if (!(cipher = get_cipher_or_print_error(optarg)))
+ exit(EXIT_FAILURE);
+ break;
+ case 'd':
+ check_enc_dec(enc);
+ enc = 0;
+ break;
+ case 'e':
+ check_enc_dec(enc);
+ enc = 1;
+ break;
+ case 'i':
+ iv = hexstr2buf(optarg, &ivlen);
+ if (iv == NULL) {
+ fprintf(stderr, "Error setting IV to %s. The IV should be encoded in hex.\n",
+ optarg);
+ exit(EINVAL);
+ }
+ memset(optarg, '*', strlen(optarg));
+ break;
+ case 'k':
+ key = hexstr2buf(optarg, &keylen);
+ if (key == NULL) {
+ fprintf(stderr, "Error setting key to %s. The key should be encoded in hex.\n",
+ optarg);
+ exit(EINVAL);
+ }
+ memset(optarg, '*', strlen(optarg));
+ break;
+ case 'n':
+ padding = 0;
+ break;
+ default:
+ show_usage(argv[0]);
+ exit(EINVAL);
+ }
+ }
+ if (ivlen != get_cipher_ivsize(cipher)) {
+ fprintf(stderr, "Error: IV must be %d bytes; given IV is %ld bytes.\n",
+ get_cipher_ivsize(cipher), ivlen);
+ exit(EXIT_FAILURE);
+ }
+ if (keylen != get_cipher_keysize(cipher)) {
+ fprintf(stderr, "Error: key must be %d bytes; given key is %ld bytes.\n",
+ get_cipher_keysize(cipher), keylen);
+ exit(EXIT_FAILURE);
+ }
+ ctx = create_ctx(cipher, key, iv, !!enc, padding);
+ if (ctx) {
+ ret = do_crypt(stdin, stdout, ctx);
+ free_ctx(ctx);
+ }
+ uencrypt_clear_free(iv, ivlen);
+ uencrypt_clear_free(key, keylen);
+ return ret;
+}