chore(deps): bump vendored minio/sha256-simd to v1.0.1 + klauspost/cpuid/v2 to v2.2.3

astrobwt/astrobwtv3/sha256simd_vector_test.go

@@ -0,0 +1,38 @@
+package astrobwtv3
+
+import (
+	"encoding/hex"
+	"testing"
+
+	sha256 "github.com/minio/sha256-simd"
+)
+
+// TestSha256SimdNistVectors confirms the vendored minio/sha256-simd v1.0.1
+// produces the exact SHA-256 output specified by NIST FIPS 180-4 for a set
+// of known vectors. This is the byte-level correctness gate for the
+// consensus-critical sha256.Sum256 calls in pow.go (AstroBWTv3 PoW).
+func TestSha256SimdNistVectors(t *testing.T) {
+	vectors := []struct {
+		input  string
+		expect string // hex digest
+	}{
+		// "abc" — the canonical NIST FIPS 180-4 / RFC 6234 vector.
+		{"abc", "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad"},
+		// empty input.
+		{"", "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"},
+		// 56-byte input.
+		{"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
+			"248d6a61d20638b8e5c026930c3e6039a33ce45964ff2167f6ecedd419db06c1"},
+		// 112-byte (two-block) — FIPS 180-4 Appendix B example.
+		{"abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu",
+			"cf5b16a778af8380036ce59e7b0492370b249b11e8f07a51afac45037afee9d1"},
+	}
+
+	for _, v := range vectors {
+		got := sha256.Sum256([]byte(v.input))
+		gotHex := hex.EncodeToString(got[:])
+		if gotHex != v.expect {
+			t.Fatalf("sha256.Sum256(%q) = %s, want %s", v.input, gotHex, v.expect)
+		}
+	}
+}