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Diffstat (limited to 'utils/block/aes192cbc_decrypt_block.c')
-rw-r--r--utils/block/aes192cbc_decrypt_block.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/utils/block/aes192cbc_decrypt_block.c b/utils/block/aes192cbc_decrypt_block.c
new file mode 100644
index 0000000..13edbe4
--- /dev/null
+++ b/utils/block/aes192cbc_decrypt_block.c
@@ -0,0 +1,76 @@
+/**
+ * \file
+ * \author Egor Tensin <Egor.Tensin@gmail.com>
+ * \date 2015
+ * \copyright This file is licensed under the terms of the MIT License.
+ * See LICENSE.txt for details.
+ */
+
+#include <aesni/all.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static void exit_with_usage()
+{
+ puts("Usage: aes192cbc_decrypt_block.exe KEY0 IV0 [CIPHERTEXT0...] [-- KEY1 IV1 [CIPHERTEXT1...]...]");
+ exit(EXIT_FAILURE);
+}
+
+static void print_error(AesNI_StatusCode status)
+{
+ fprintf(stderr, "AesNI error: %s\n", aesni_strerror(status));
+}
+
+int main(int argc, char** argv)
+{
+ AesNI_StatusCode status = AESNI_SUCCESS;
+
+ for (--argc, ++argv; argc > -1; --argc, ++argv)
+ {
+ AesNI_Block128 plaintext, ciphertext, iv;
+ AesNI_Aes192_Key key;
+ AesNI_Aes192_RoundKeys encryption_keys, decryption_keys;
+
+ if (argc < 2)
+ exit_with_usage();
+
+ if (aesni_is_error(status = aesni_aes192_parse_key(&key, *argv, NULL)))
+ {
+ print_error(status);
+ exit_with_usage();
+ }
+
+ if (aesni_is_error(status = aesni_aes_parse_block(&iv, argv[1], NULL)))
+ {
+ print_error(status);
+ exit_with_usage();
+ }
+
+ aesni_aes192_expand_key(&key, &encryption_keys);
+ aesni_aes192_derive_decryption_keys(&encryption_keys, &decryption_keys);
+
+ for (argc -= 2, argv += 2; argc > 0; --argc, ++argv)
+ {
+ if (strcmp("--", *argv) == 0)
+ break;
+
+ if (aesni_is_error(status = aesni_aes_parse_block(&ciphertext, *argv, NULL)))
+ {
+ print_error(status);
+ continue;
+ }
+
+ plaintext = aesni_aes192_decrypt_block_cbc(ciphertext, &decryption_keys, iv, &iv);
+
+ if (aesni_is_error(status = aesni_aes_print_block(&plaintext, NULL)))
+ {
+ print_error(status);
+ continue;
+ }
+ }
+ }
+
+ return 0;
+}