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Unified Diff: libsrtp/crypto/test/aes_calc.c

Issue 3423016: Add current version of libSRTP from CVS. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/
Patch Set: '' Created 10 years, 3 months ago
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Index: libsrtp/crypto/test/aes_calc.c
===================================================================
--- libsrtp/crypto/test/aes_calc.c (revision 0)
+++ libsrtp/crypto/test/aes_calc.c (revision 0)
@@ -0,0 +1,119 @@
+/*
+ * aes_calc.c
+ *
+ * A simple AES calculator for generating AES encryption values
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+/*
+
+ Example usage (with first NIST FIPS 197 test case):
+
+[sh]$ test/aes_calc 000102030405060708090a0b0c0d0e0f 00112233445566778899aabbccddeeff -v
+ plaintext: 00112233445566778899aabbccddeeff
+ key: 000102030405060708090a0b0c0d0e0f
+ ciphertext: 69c4e0d86a7b0430d8cdb78070b4c55a
+
+ */
+
+#include "aes.h"
+#include <stdio.h>
+#include <string.h>
+
+void
+usage(char *prog_name) {
+ printf("usage: %s <key> <plaintext> [-v]\n", prog_name);
+ exit(255);
+}
+
+#define AES_MAX_KEY_LEN 32
+
+int
+main (int argc, char *argv[]) {
+ v128_t data;
+ uint8_t key[AES_MAX_KEY_LEN];
+ aes_expanded_key_t exp_key;
+ int key_len, len;
+ int verbose;
+ err_status_t status;
+
+ if (argc == 3) {
+ /* we're not in verbose mode */
+ verbose = 0;
+ } else if (argc == 4) {
+ if (strncmp(argv[3], "-v", 2) == 0) {
+ /* we're in verbose mode */
+ verbose = 1;
+ } else {
+ /* unrecognized flag, complain and exit */
+ usage(argv[0]);
+ }
+ } else {
+ /* we've been fed the wrong number of arguments - compain and exit */
+ usage(argv[0]);
+ }
+
+ /* read in key, checking length */
+ if (strlen(argv[1]) > AES_MAX_KEY_LEN*2) {
+ fprintf(stderr,
+ "error: too many digits in key "
+ "(should be at most %d hexadecimal digits, found %u)\n",
+ AES_MAX_KEY_LEN*2, (unsigned)strlen(argv[1]));
+ exit(1);
+ }
+ len = hex_string_to_octet_string((char*)key, argv[1], AES_MAX_KEY_LEN*2);
+ /* check that hex string is the right length */
+ if (len != 32 && len != 48 && len != 64) {
+ fprintf(stderr,
+ "error: bad number of digits in key "
+ "(should be 32/48/64 hexadecimal digits, found %d)\n",
+ len);
+ exit(1);
+ }
+ key_len = len/2;
+
+ /* read in plaintext, checking length */
+ if (strlen(argv[2]) > 16*2) {
+ fprintf(stderr,
+ "error: too many digits in plaintext "
+ "(should be %d hexadecimal digits, found %u)\n",
+ 16*2, (unsigned)strlen(argv[2]));
+ exit(1);
+ }
+ len = hex_string_to_octet_string((char *)(&data), argv[2], 16*2);
+ /* check that hex string is the right length */
+ if (len < 16*2) {
+ fprintf(stderr,
+ "error: too few digits in plaintext "
+ "(should be %d hexadecimal digits, found %d)\n",
+ 16*2, len);
+ exit(1);
+ }
+
+ if (verbose) {
+ /* print out plaintext */
+ printf("plaintext:\t%s\n", octet_string_hex_string((uint8_t *)&data, 16));
+ }
+
+ /* encrypt plaintext */
+ status = aes_expand_encryption_key(key, key_len, &exp_key);
+ if (status) {
+ fprintf(stderr,
+ "error: AES key expansion failed.\n");
+ exit(1);
+ }
+
+ aes_encrypt(&data, &exp_key);
+
+ /* write ciphertext to output */
+ if (verbose) {
+ printf("key:\t\t%s\n", octet_string_hex_string(key, key_len));
+ printf("ciphertext:\t");
+ }
+ printf("%s\n", v128_hex_string(&data));
+
+ return 0;
+}
+
Property changes on: libsrtp/crypto/test/aes_calc.c
___________________________________________________________________
Added: svn:eol-style
+ LF
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