JCE: add SHA-224 MessageDigest implementation

README_JCE.md

@@ -88,6 +88,7 @@ The JCE provider currently supports the following algorithms:
     MessageDigest Class
         MD5
         SHA-1
+        SHA-224
         SHA-256
         SHA-384
         SHA-512

scripts/infer.sh

@@ -71,6 +71,7 @@ infer --fail-on-issue run -- javac \
     src/main/java/com/wolfssl/provider/jce/WolfCryptMac.java \
     src/main/java/com/wolfssl/provider/jce/WolfCryptMessageDigestMd5.java \
     src/main/java/com/wolfssl/provider/jce/WolfCryptMessageDigestSha.java \
+    src/main/java/com/wolfssl/provider/jce/WolfCryptMessageDigestSha224.java \
     src/main/java/com/wolfssl/provider/jce/WolfCryptMessageDigestSha256.java \
     src/main/java/com/wolfssl/provider/jce/WolfCryptMessageDigestSha384.java \
     src/main/java/com/wolfssl/provider/jce/WolfCryptMessageDigestSha512.java \

src/main/java/com/wolfssl/provider/jce/WolfCryptMessageDigestSha224.java

@@ -0,0 +1,127 @@
+/* WolfCryptMessageDigestSha224.java
+ *
+ * Copyright (C) 2006-2025 wolfSSL Inc.
+ *
+ * This file is part of wolfSSL.
+ *
+ * wolfSSL is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * wolfSSL is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
+ */
+
+package com.wolfssl.provider.jce;
+
+import java.security.MessageDigestSpi;
+import javax.crypto.ShortBufferException;
+
+import com.wolfssl.wolfcrypt.Sha224;
+
+/**
+ * wolfCrypt JCE SHA2-224 MessageDigest wrapper
+ */
+public final class WolfCryptMessageDigestSha224
+    extends MessageDigestSpi implements Cloneable {
+
+    /* internal reference to wolfCrypt JNI Sha object */
+    private Sha224 sha;
+
+    /**
+     * Create new WolfCryptMessageDigestSha224 object
+     */
+    public WolfCryptMessageDigestSha224() {
+
+        sha = new Sha224();
+        sha.init();
+    }
+
+    /**
+     * Create new WolfCryptMessageDigestSha224 based on existing Sha224 object.
+     * Existing object should already be initialized.
+     *
+     * @param sha initialized Sha224 object to be used with this MessageDigest
+     */
+    private WolfCryptMessageDigestSha224(Sha224 sha) {
+        this.sha = sha;
+    }
+
+    @Override
+    protected byte[] engineDigest() {
+
+        byte[] digest = new byte[Sha224.DIGEST_SIZE];
+
+        try {
+
+            this.sha.digest(digest);
+
+        } catch (ShortBufferException e) {
+            throw new RuntimeException(e.getMessage());
+        }
+
+        log("generated final digest, len: " + digest.length);
+
+        return digest;
+    }
+
+    @Override
+    protected void engineReset() {
+
+        this.sha.init();
+
+        log("engine reset");
+    }
+
+    @Override
+    protected void engineUpdate(byte input) {
+
+        byte[] tmp = new byte[1];
+        tmp[0] = input;
+
+        this.sha.update(tmp, 1);
+
+        log("update with single byte");
+    }
+
+    @Override
+    protected void engineUpdate(byte[] input, int offset, int len) {
+
+        this.sha.update(input, offset, len);
+
+        log("update, offset: " + offset + ", len: " + len);
+    }
+
+    @Override
+    protected int engineGetDigestLength() {
+        return this.sha.digestSize();
+    }
+
+    private void log(String msg) {
+        WolfCryptDebug.print("[MessageDigest, SHA224] " + msg);
+    }
+
+    @Override
+    public Object clone() {
+        Sha224 shaCopy = (Sha224)this.sha.clone();
+        return new WolfCryptMessageDigestSha224(shaCopy);
+    }
+
+    @SuppressWarnings("deprecation")
+    @Override
+    protected void finalize() throws Throwable {
+        try {
+            if (this.sha != null)
+                this.sha.releaseNativeStruct();
+        } finally {
+            super.finalize();
+        }
+    }
+}

src/main/java/com/wolfssl/provider/jce/WolfCryptProvider.java

@@ -78,6 +78,10 @@ private void registerServices() {
             put("MessageDigest.SHA-1",
                     "com.wolfssl.provider.jce.WolfCryptMessageDigestSha");
         }
+        if (FeatureDetect.Sha224Enabled()) {
+            put("MessageDigest.SHA-224",
+                    "com.wolfssl.provider.jce.WolfCryptMessageDigestSha224");
+        }
         if (FeatureDetect.Sha256Enabled()) {
             put("MessageDigest.SHA-256",
                     "com.wolfssl.provider.jce.WolfCryptMessageDigestSha256");