1 files changed, 83 insertions, 0 deletions
diff --git a/lib/crypto-algorithms/des_test.c b/lib/crypto-algorithms/des_test.c
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+++ b/lib/crypto-algorithms/des_test.c
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+/*********************************************************************
+* Filename:   des_test.c
+* Author:     Brad Conte (brad AT bradconte.com)
+* Copyright:
+* Disclaimer: This code is presented "as is" without any guarantees.
+* Details:    Performs known-answer tests on the corresponding DES
+	          implementation. These tests do not encompass the full
+	          range of available test vectors, however, if the tests
+	          pass it is very, very likely that the code is correct
+	          and was compiled properly. This code also serves as
+	          example usage of the functions.
+*********************************************************************/
+
+/*************************** HEADER FILES ***************************/
+#include <stdio.h>
+#include <memory.h>
+#include "des.h"
+
+/*********************** FUNCTION DEFINITIONS ***********************/
+int des_test()
+{
+	BYTE pt1[DES_BLOCK_SIZE] = {0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xE7};
+	BYTE pt2[DES_BLOCK_SIZE] = {0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF};
+	BYTE pt3[DES_BLOCK_SIZE] = {0x54,0x68,0x65,0x20,0x71,0x75,0x66,0x63};
+	BYTE ct1[DES_BLOCK_SIZE] = {0xc9,0x57,0x44,0x25,0x6a,0x5e,0xd3,0x1d};
+	BYTE ct2[DES_BLOCK_SIZE] = {0x85,0xe8,0x13,0x54,0x0f,0x0a,0xb4,0x05};
+	BYTE ct3[DES_BLOCK_SIZE] = {0xc9,0x57,0x44,0x25,0x6a,0x5e,0xd3,0x1d};
+	BYTE ct4[DES_BLOCK_SIZE] = {0xA8,0x26,0xFD,0x8C,0xE5,0x3B,0x85,0x5F};
+	BYTE key1[DES_BLOCK_SIZE] = {0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF};
+	BYTE key2[DES_BLOCK_SIZE] = {0x13,0x34,0x57,0x79,0x9B,0xBC,0xDF,0xF1};
+	BYTE three_key1[DES_BLOCK_SIZE * 3] = {0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF,
+	                                       0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF,
+	                                       0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF};
+	BYTE three_key2[DES_BLOCK_SIZE * 3] = {0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF,
+	                                       0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF,0x01,
+	                                       0x45,0x67,0x89,0xAB,0xCD,0xEF,0x01,0x23};
+
+	BYTE schedule[16][6];
+	BYTE three_schedule[3][16][6];
+	BYTE buf[DES_BLOCK_SIZE];
+	int pass = 1;
+
+	des_key_setup(key1, schedule, DES_ENCRYPT);
+	des_crypt(pt1, buf, schedule);
+	pass = pass && !memcmp(ct1, buf, DES_BLOCK_SIZE);
+
+	des_key_setup(key1, schedule, DES_DECRYPT);
+	des_crypt(ct1, buf, schedule);
+	pass = pass && !memcmp(pt1, buf, DES_BLOCK_SIZE);
+
+	des_key_setup(key2, schedule, DES_ENCRYPT);
+	des_crypt(pt2, buf, schedule);
+	pass = pass && !memcmp(ct2, buf, DES_BLOCK_SIZE);
+
+	des_key_setup(key2, schedule, DES_DECRYPT);
+	des_crypt(ct2, buf, schedule);
+	pass = pass && !memcmp(pt2, buf, DES_BLOCK_SIZE);
+
+	three_des_key_setup(three_key1, three_schedule, DES_ENCRYPT);
+	three_des_crypt(pt1, buf, three_schedule);
+	pass = pass && !memcmp(ct3, buf, DES_BLOCK_SIZE);
+
+	three_des_key_setup(three_key1, three_schedule, DES_DECRYPT);
+	three_des_crypt(ct3, buf, three_schedule);
+	pass = pass && !memcmp(pt1, buf, DES_BLOCK_SIZE);
+
+	three_des_key_setup(three_key2, three_schedule, DES_ENCRYPT);
+	three_des_crypt(pt3, buf, three_schedule);
+	pass = pass && !memcmp(ct4, buf, DES_BLOCK_SIZE);
+
+	three_des_key_setup(three_key2, three_schedule, DES_DECRYPT);
+	three_des_crypt(ct4, buf, three_schedule);
+	pass = pass && !memcmp(pt3, buf, DES_BLOCK_SIZE);
+
+	return(pass);
+}
+
+int main()
+{
+	printf("DES test: %s\n", des_test() ? "SUCCEEDED" : "FAILED");
+
+	return(0);
+}