1 files changed, 61 insertions, 0 deletions
diff --git a/lib/crypto-algorithms/sha256_test.c b/lib/crypto-algorithms/sha256_test.c
new file mode 100644
index 0000000..6951c51
--- /dev/null
+++ b/lib/crypto-algorithms/sha256_test.c
@@ -0,0 +1,61 @@
+/*********************************************************************
+* Filename:   sha256.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 SHA1
+	          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 <string.h>
+#include "sha256.h"
+
+/*********************** FUNCTION DEFINITIONS ***********************/
+int sha256_test()
+{
+	BYTE text1[] = {"abc"};
+	BYTE text2[] = {"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"};
+	BYTE text3[] = {"aaaaaaaaaa"};
+	BYTE hash1[SHA256_BLOCK_SIZE] = {0xba,0x78,0x16,0xbf,0x8f,0x01,0xcf,0xea,0x41,0x41,0x40,0xde,0x5d,0xae,0x22,0x23,
+	                                 0xb0,0x03,0x61,0xa3,0x96,0x17,0x7a,0x9c,0xb4,0x10,0xff,0x61,0xf2,0x00,0x15,0xad};
+	BYTE hash2[SHA256_BLOCK_SIZE] = {0x24,0x8d,0x6a,0x61,0xd2,0x06,0x38,0xb8,0xe5,0xc0,0x26,0x93,0x0c,0x3e,0x60,0x39,
+	                                 0xa3,0x3c,0xe4,0x59,0x64,0xff,0x21,0x67,0xf6,0xec,0xed,0xd4,0x19,0xdb,0x06,0xc1};
+	BYTE hash3[SHA256_BLOCK_SIZE] = {0xcd,0xc7,0x6e,0x5c,0x99,0x14,0xfb,0x92,0x81,0xa1,0xc7,0xe2,0x84,0xd7,0x3e,0x67,
+	                                 0xf1,0x80,0x9a,0x48,0xa4,0x97,0x20,0x0e,0x04,0x6d,0x39,0xcc,0xc7,0x11,0x2c,0xd0};
+	BYTE buf[SHA256_BLOCK_SIZE];
+	SHA256_CTX ctx;
+	int idx;
+	int pass = 1;
+
+	sha256_init(&ctx);
+	sha256_update(&ctx, text1, strlen(text1));
+	sha256_final(&ctx, buf);
+	pass = pass && !memcmp(hash1, buf, SHA256_BLOCK_SIZE);
+
+	sha256_init(&ctx);
+	sha256_update(&ctx, text2, strlen(text2));
+	sha256_final(&ctx, buf);
+	pass = pass && !memcmp(hash2, buf, SHA256_BLOCK_SIZE);
+
+	sha256_init(&ctx);
+	for (idx = 0; idx < 100000; ++idx)
+	   sha256_update(&ctx, text3, strlen(text3));
+	sha256_final(&ctx, buf);
+	pass = pass && !memcmp(hash3, buf, SHA256_BLOCK_SIZE);
+
+	return(pass);
+}
+
+int main()
+{
+	printf("SHA-256 tests: %s\n", sha256_test() ? "SUCCEEDED" : "FAILEd");
+
+	return(0);
+}