* testsuite/sha256-test.m4: New testcases for SHA-256.

Rev: src/nettle/testsuite/sha256-test.m4:1.1

testsuite/sha256-test.m4

+#include "sha.h"
+
+BEGIN_TEST
+
+struct sha256_ctx ctx;
+uint8_t digest[SHA256_DIGEST_SIZE];
+
+sha256_init(&ctx);
+sha256_update(&ctx, 3, "abc");
+sha256_final(&ctx);
+sha256_digest(&ctx, SHA256_DIGEST_SIZE, digest);
+
+if (!MEMEQ(SHA256_DIGEST_SIZE, digest,
+	   H("ba7816bf8f01cfea 414140de5dae2223 b00361a396177a9c b410ff61f20015ad")))
+  FAIL;
+
+memset(digest, 0, SHA256_DIGEST_SIZE);
+sha256_digest(&ctx, SHA256_DIGEST_SIZE - 1, digest);
+
+if (!MEMEQ(SHA256_DIGEST_SIZE, digest,
+	   H("ba7816bf8f01cfea 414140de5dae2223 b00361a396177a9c b410ff61f2001500")))
+  FAIL;
+
+sha256_init(&ctx);
+sha256_update(&ctx, 56, "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq");
+sha256_final(&ctx);
+sha256_digest(&ctx, SHA256_DIGEST_SIZE, digest);
+
+if (!MEMEQ(SHA256_DIGEST_SIZE, digest,
+	   H("248d6a61d20638b8 e5c026930c3e6039 a33ce45964ff2167 f6ecedd419db06c1")))
+  FAIL;
+
+sha256_init(&ctx);
+sha256_update(&ctx, 112, "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmno"
+			 "ijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu");
+sha256_final(&ctx);
+sha256_digest(&ctx, SHA256_DIGEST_SIZE, digest);
+
+if (!MEMEQ(SHA256_DIGEST_SIZE, digest,
+	   H("cf5b16a778af8380 036ce59e7b049237 0b249b11e8f07a51 afac45037afee9d1")))
+  FAIL;