diff --git a/core/auth-crt/pom.xml b/core/auth-crt/pom.xml
index 1201eba62511..c43c0f13d480 100644
--- a/core/auth-crt/pom.xml
+++ b/core/auth-crt/pom.xml
@@ -62,6 +62,11 @@
             <artifactId>auth</artifactId>
             <version>${awsjavasdk.version}</version>
         </dependency>
+        <dependency>
+            <groupId>software.amazon.awssdk</groupId>
+            <artifactId>http-auth-aws</artifactId>
+            <version>${awsjavasdk.version}</version>
+        </dependency>
         <dependency>
             <groupId>software.amazon.awssdk.crt</groupId>
             <artifactId>aws-crt</artifactId>
diff --git a/core/auth-crt/src/main/java/software/amazon/awssdk/authcrt/signer/internal/SigningConfigProvider.java b/core/auth-crt/src/main/java/software/amazon/awssdk/authcrt/signer/internal/SigningConfigProvider.java
index 0ed8c1645181..db21558ab647 100644
--- a/core/auth-crt/src/main/java/software/amazon/awssdk/authcrt/signer/internal/SigningConfigProvider.java
+++ b/core/auth-crt/src/main/java/software/amazon/awssdk/authcrt/signer/internal/SigningConfigProvider.java
@@ -23,9 +23,9 @@
 import java.util.Optional;
 import software.amazon.awssdk.annotations.SdkInternalApi;
 import software.amazon.awssdk.auth.signer.AwsSignerExecutionAttribute;
-import software.amazon.awssdk.auth.signer.internal.SignerConstant;
 import software.amazon.awssdk.core.interceptor.ExecutionAttributes;
 import software.amazon.awssdk.crt.auth.signing.AwsSigningConfig;
+import software.amazon.awssdk.http.auth.aws.signer.SignerConstant;
 import software.amazon.awssdk.regions.RegionScope;
 
 @SdkInternalApi
@@ -80,7 +80,7 @@ private AwsSigningConfig createPresigningConfig(ExecutionAttributes executionAtt
 
         long expirationInSeconds = expirationTime
             .map(end -> Math.max(0, Duration.between(getSigningClock(executionAttributes).instant(), end).getSeconds()))
-            .orElse(SignerConstant.PRESIGN_URL_MAX_EXPIRATION_SECONDS);
+            .orElse(SignerConstant.PRESIGN_URL_MAX_EXPIRATION_DURATION.getSeconds());
 
         AwsSigningConfig signingConfig = createDefaultRequestConfig(executionAttributes);
         signingConfig.setExpirationInSeconds(expirationInSeconds);
diff --git a/core/auth-crt/src/test/java/software/amazon/awssdk/authcrt/signer/internal/SigningConfigProviderTest.java b/core/auth-crt/src/test/java/software/amazon/awssdk/authcrt/signer/internal/SigningConfigProviderTest.java
index 49769dcd2b2b..4b6cc9ca9ec1 100644
--- a/core/auth-crt/src/test/java/software/amazon/awssdk/authcrt/signer/internal/SigningConfigProviderTest.java
+++ b/core/auth-crt/src/test/java/software/amazon/awssdk/authcrt/signer/internal/SigningConfigProviderTest.java
@@ -25,11 +25,11 @@
 import org.junit.jupiter.api.Test;
 import software.amazon.awssdk.auth.signer.AwsSignerExecutionAttribute;
 import software.amazon.awssdk.auth.signer.S3SignerExecutionAttribute;
-import software.amazon.awssdk.auth.signer.internal.SignerConstant;
 import software.amazon.awssdk.authcrt.signer.SignerTestUtils;
 import software.amazon.awssdk.authcrt.signer.SigningTestCase;
 import software.amazon.awssdk.core.interceptor.ExecutionAttributes;
 import software.amazon.awssdk.crt.auth.signing.AwsSigningConfig;
+import software.amazon.awssdk.http.auth.aws.signer.SignerConstant;
 
 public class SigningConfigProviderTest {
 
@@ -68,7 +68,7 @@ public void testBasicQuerySigningConfiguration() {
         assertTrue(signingConfig.getService().equals(testCase.signingName));
         assertTrue(signingConfig.getShouldNormalizeUriPath());
         assertTrue(signingConfig.getUseDoubleUriEncode());
-        assertTrue(signingConfig.getExpirationInSeconds() == SignerConstant.PRESIGN_URL_MAX_EXPIRATION_SECONDS);
+        assertTrue(signingConfig.getExpirationInSeconds() == SignerConstant.PRESIGN_URL_MAX_EXPIRATION_DURATION.getSeconds());
     }
 
     @Test
diff --git a/core/auth/src/main/java/software/amazon/awssdk/auth/signer/Aws4UnsignedPayloadSigner.java b/core/auth/src/main/java/software/amazon/awssdk/auth/signer/Aws4UnsignedPayloadSigner.java
index 9773d81d7645..44de838d872a 100644
--- a/core/auth/src/main/java/software/amazon/awssdk/auth/signer/Aws4UnsignedPayloadSigner.java
+++ b/core/auth/src/main/java/software/amazon/awssdk/auth/signer/Aws4UnsignedPayloadSigner.java
@@ -15,7 +15,7 @@
 
 package software.amazon.awssdk.auth.signer;
 
-import static software.amazon.awssdk.auth.signer.internal.SignerConstant.X_AMZ_CONTENT_SHA256;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.X_AMZ_CONTENT_SHA256;
 
 import software.amazon.awssdk.annotations.SdkPublicApi;
 import software.amazon.awssdk.auth.signer.internal.BaseAws4Signer;
diff --git a/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/AbstractAws4Signer.java b/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/AbstractAws4Signer.java
index ff4921bbd217..8eca578b400d 100644
--- a/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/AbstractAws4Signer.java
+++ b/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/AbstractAws4Signer.java
@@ -46,10 +46,12 @@
 import software.amazon.awssdk.core.signer.Presigner;
 import software.amazon.awssdk.http.SdkHttpFullRequest;
 import software.amazon.awssdk.http.SdkHttpRequest;
+import software.amazon.awssdk.http.auth.aws.signer.SignerConstant;
 import software.amazon.awssdk.utils.BinaryUtils;
 import software.amazon.awssdk.utils.Logger;
 import software.amazon.awssdk.utils.Pair;
 import software.amazon.awssdk.utils.StringUtils;
+import software.amazon.awssdk.utils.cache.FifoCache;
 import software.amazon.awssdk.utils.http.SdkHttpUtils;
 
 /**
@@ -332,7 +334,7 @@ private void addPreSignInformationToRequest(SdkHttpFullRequest.Builder mutableRe
 
         mutableRequest.putRawQueryParameter(SignerConstant.X_AMZ_ALGORITHM, SignerConstant.AWS4_SIGNING_ALGORITHM);
         mutableRequest.putRawQueryParameter(SignerConstant.X_AMZ_DATE, signerParams.getFormattedRequestSigningDateTime());
-        mutableRequest.putRawQueryParameter(SignerConstant.X_AMZ_SIGNED_HEADER, canonicalRequest.signedHeaderString());
+        mutableRequest.putRawQueryParameter(SignerConstant.X_AMZ_SIGNED_HEADERS, canonicalRequest.signedHeaderString());
         mutableRequest.putRawQueryParameter(SignerConstant.X_AMZ_EXPIRES, Long.toString(expirationInSeconds));
         mutableRequest.putRawQueryParameter(SignerConstant.X_AMZ_CREDENTIAL, signingCredentials);
     }
@@ -375,9 +377,9 @@ private long getSignatureDurationInSeconds(Aws4SignerRequestParams requestParams
         long expirationInSeconds = signingParams.expirationTime()
                                                 .map(t -> t.getEpochSecond() -
                                                           (requestParams.getRequestSigningDateTimeMilli() / 1000))
-                                                .orElse(SignerConstant.PRESIGN_URL_MAX_EXPIRATION_SECONDS);
+                                                .orElse(SignerConstant.PRESIGN_URL_MAX_EXPIRATION_DURATION.getSeconds());
 
-        if (expirationInSeconds > SignerConstant.PRESIGN_URL_MAX_EXPIRATION_SECONDS) {
+        if (expirationInSeconds > SignerConstant.PRESIGN_URL_MAX_EXPIRATION_DURATION.getSeconds()) {
             throw SdkClientException.builder()
                                     .message("Requests that are pre-signed by SigV4 algorithm are valid for at most 7" +
                                              " days. The expiration date set on the current request [" +
diff --git a/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/AbstractAwsS3V4Signer.java b/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/AbstractAwsS3V4Signer.java
index 726e171d0a8d..166016f125b2 100644
--- a/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/AbstractAwsS3V4Signer.java
+++ b/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/AbstractAwsS3V4Signer.java
@@ -16,7 +16,7 @@
 package software.amazon.awssdk.auth.signer.internal;
 
 import static software.amazon.awssdk.auth.signer.internal.Aws4SignerUtils.calculateRequestContentLength;
-import static software.amazon.awssdk.auth.signer.internal.SignerConstant.X_AMZ_CONTENT_SHA256;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.X_AMZ_CONTENT_SHA256;
 
 import java.io.InputStream;
 import java.util.Optional;
diff --git a/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/Aws4SignerRequestParams.java b/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/Aws4SignerRequestParams.java
index 8c577e81cde5..485db2ed956d 100644
--- a/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/Aws4SignerRequestParams.java
+++ b/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/Aws4SignerRequestParams.java
@@ -19,6 +19,7 @@
 import java.time.Duration;
 import software.amazon.awssdk.annotations.SdkInternalApi;
 import software.amazon.awssdk.auth.signer.params.Aws4SignerParams;
+import software.amazon.awssdk.http.auth.aws.signer.SignerConstant;
 import software.amazon.awssdk.regions.Region;
 
 /**
diff --git a/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/BaseAsyncAws4Signer.java b/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/BaseAsyncAws4Signer.java
index a25f1845d73e..f5edd6ab9d84 100644
--- a/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/BaseAsyncAws4Signer.java
+++ b/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/BaseAsyncAws4Signer.java
@@ -26,6 +26,7 @@
 import software.amazon.awssdk.core.interceptor.ExecutionAttributes;
 import software.amazon.awssdk.core.signer.AsyncRequestBodySigner;
 import software.amazon.awssdk.http.SdkHttpFullRequest;
+import software.amazon.awssdk.http.auth.aws.signer.SignerConstant;
 
 
 @SdkInternalApi
diff --git a/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/BaseEventStreamAsyncAws4Signer.java b/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/BaseEventStreamAsyncAws4Signer.java
index 012ba147a883..a168ea0d061f 100644
--- a/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/BaseEventStreamAsyncAws4Signer.java
+++ b/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/BaseEventStreamAsyncAws4Signer.java
@@ -15,7 +15,7 @@
 
 package software.amazon.awssdk.auth.signer.internal;
 
-import static software.amazon.awssdk.auth.signer.internal.SignerConstant.X_AMZ_CONTENT_SHA256;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.X_AMZ_CONTENT_SHA256;
 
 import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
@@ -37,6 +37,7 @@
 import software.amazon.awssdk.core.checksums.SdkChecksum;
 import software.amazon.awssdk.core.interceptor.ExecutionAttributes;
 import software.amazon.awssdk.http.SdkHttpFullRequest;
+import software.amazon.awssdk.http.auth.aws.signer.SignerConstant;
 import software.amazon.awssdk.utils.BinaryUtils;
 import software.amazon.awssdk.utils.Logger;
 import software.amazon.eventstream.HeaderValue;
diff --git a/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/BoundedLinkedHashMap.java b/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/BoundedLinkedHashMap.java
deleted file mode 100644
index 20d2d75bd070..000000000000
--- a/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/BoundedLinkedHashMap.java
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License").
- * You may not use this file except in compliance with the License.
- * A copy of the License is located at
- *
- *  http://aws.amazon.com/apache2.0
- *
- * or in the "license" file accompanying this file. This file is distributed
- * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
- * express or implied. See the License for the specific language governing
- * permissions and limitations under the License.
- */
-
-package software.amazon.awssdk.auth.signer.internal;
-
-import java.util.LinkedHashMap;
-import java.util.Map;
-import software.amazon.awssdk.annotations.SdkInternalApi;
-
-/**
- * A bounded linked hash map that would remove the eldest entry when the map
- * size exceeds a configurable maximum.
- */
-@SdkInternalApi
-final class BoundedLinkedHashMap<K, V> extends LinkedHashMap<K, V> {
-    private static final long serialVersionUID = 1L;
-    private final int maxSize;
-
-    BoundedLinkedHashMap(int maxSize) {
-        this.maxSize = maxSize;
-    }
-
-    /**
-     * {@inheritDoc}
-     *
-     * Returns true if the size of this map exceeds the maximum.
-     */
-    @Override
-    protected boolean removeEldestEntry(Map.Entry<K, V> eldest) {
-        return size() > maxSize;
-    }
-
-    /**
-     * Returns the maximum size of this map beyond which the eldest entry
-     * will get removed.
-     */
-    int getMaxSize() {
-        return maxSize;
-    }
-}
diff --git a/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/FifoCache.java b/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/FifoCache.java
deleted file mode 100644
index ccb3b108915d..000000000000
--- a/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/FifoCache.java
+++ /dev/null
@@ -1,102 +0,0 @@
-/*
- * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License").
- * You may not use this file except in compliance with the License.
- * A copy of the License is located at
- *
- *  http://aws.amazon.com/apache2.0
- *
- * or in the "license" file accompanying this file. This file is distributed
- * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
- * express or implied. See the License for the specific language governing
- * permissions and limitations under the License.
- */
-
-package software.amazon.awssdk.auth.signer.internal;
-
-import java.util.concurrent.locks.ReentrantReadWriteLock;
-import java.util.concurrent.locks.ReentrantReadWriteLock.ReadLock;
-import java.util.concurrent.locks.ReentrantReadWriteLock.WriteLock;
-import software.amazon.awssdk.annotations.SdkInternalApi;
-import software.amazon.awssdk.annotations.ThreadSafe;
-
-/**
- * A bounded cache that has a FIFO eviction policy when the cache is full.
- *
- * @param <T>
- *            value type
- */
-@ThreadSafe
-@SdkInternalApi
-public final class FifoCache<T> {
-    private final BoundedLinkedHashMap<String, T> map;
-    private final ReadLock rlock;
-    private final WriteLock wlock;
-
-    /**
-     * @param maxSize
-     *            the maximum number of entries of the cache
-     */
-    public FifoCache(final int maxSize) {
-        if (maxSize < 1) {
-            throw new IllegalArgumentException("maxSize " + maxSize
-                                               + " must be at least 1");
-        }
-        map = new BoundedLinkedHashMap<>(maxSize);
-        ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
-        rlock = lock.readLock();
-        wlock = lock.writeLock();
-    }
-
-    /**
-     * Adds an entry to the cache, evicting the earliest entry if necessary.
-     */
-    public T add(String key, T value) {
-        wlock.lock();
-        try {
-            return map.put(key, value);
-        } finally {
-            wlock.unlock();
-        }
-    }
-
-    /** Returns the value of the given key; or null of no such entry exists. */
-    public T get(String key) {
-        rlock.lock();
-        try {
-            return map.get(key);
-        } finally {
-            rlock.unlock();
-        }
-    }
-
-    /**
-     * Returns the current size of the cache.
-     */
-    public int size() {
-        rlock.lock();
-        try {
-            return map.size();
-        } finally {
-            rlock.unlock();
-        }
-    }
-
-    /**
-     * Returns the maximum size of the cache.
-     */
-    public int getMaxSize() {
-        return map.getMaxSize();
-    }
-
-    @Override
-    public String toString() {
-        rlock.lock();
-        try {
-            return map.toString();
-        } finally {
-            rlock.unlock();
-        }
-    }
-}
diff --git a/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/SignerConstant.java b/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/SignerConstant.java
deleted file mode 100644
index 5118f6fbfcce..000000000000
--- a/core/auth/src/main/java/software/amazon/awssdk/auth/signer/internal/SignerConstant.java
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License").
- * You may not use this file except in compliance with the License.
- * A copy of the License is located at
- *
- *  http://aws.amazon.com/apache2.0
- *
- * or in the "license" file accompanying this file. This file is distributed
- * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
- * express or implied. See the License for the specific language governing
- * permissions and limitations under the License.
- */
-
-package software.amazon.awssdk.auth.signer.internal;
-
-import software.amazon.awssdk.annotations.SdkInternalApi;
-
-@SdkInternalApi
-public final class SignerConstant {
-
-    public static final String AWS4_TERMINATOR = "aws4_request";
-
-    public static final String AWS4_SIGNING_ALGORITHM = "AWS4-HMAC-SHA256";
-
-    /** Seconds in a week, which is the max expiration time Sig-v4 accepts. */
-    public static final long PRESIGN_URL_MAX_EXPIRATION_SECONDS = 60L * 60 * 24 * 7;
-
-    public static final String X_AMZ_CONTENT_SHA256 = "x-amz-content-sha256";
-
-    public static final String AUTHORIZATION = "Authorization";
-
-    static final String X_AMZ_SECURITY_TOKEN = "X-Amz-Security-Token";
-
-    static final String X_AMZ_CREDENTIAL = "X-Amz-Credential";
-
-    static final String X_AMZ_DATE = "X-Amz-Date";
-
-    static final String X_AMZ_EXPIRES = "X-Amz-Expires";
-
-    static final String X_AMZ_SIGNED_HEADER = "X-Amz-SignedHeaders";
-
-    static final String X_AMZ_SIGNATURE = "X-Amz-Signature";
-
-    static final String X_AMZ_ALGORITHM = "X-Amz-Algorithm";
-
-    static final String HOST = "Host";
-
-    static final String LINE_SEPARATOR = "\n";
-
-    private SignerConstant() {
-    }
-}
diff --git a/core/auth/src/main/java/software/amazon/awssdk/auth/signer/params/Aws4PresignerParams.java b/core/auth/src/main/java/software/amazon/awssdk/auth/signer/params/Aws4PresignerParams.java
index 590d959c0aa1..a2d8b17a7e77 100644
--- a/core/auth/src/main/java/software/amazon/awssdk/auth/signer/params/Aws4PresignerParams.java
+++ b/core/auth/src/main/java/software/amazon/awssdk/auth/signer/params/Aws4PresignerParams.java
@@ -18,7 +18,7 @@
 import java.time.Instant;
 import java.util.Optional;
 import software.amazon.awssdk.annotations.SdkPublicApi;
-import software.amazon.awssdk.auth.signer.internal.SignerConstant;
+import software.amazon.awssdk.http.auth.aws.signer.SignerConstant;
 import software.amazon.awssdk.utils.builder.CopyableBuilder;
 import software.amazon.awssdk.utils.builder.ToCopyableBuilder;
 
@@ -51,7 +51,7 @@ public interface Builder extends Aws4SignerParams.Builder<Builder>, CopyableBuil
 
         /**
          * Sets an expiration time for the presigned url. If this value is not specified,
-         * {@link SignerConstant#PRESIGN_URL_MAX_EXPIRATION_SECONDS} is used.
+         * {@link SignerConstant#PRESIGN_URL_MAX_EXPIRATION_DURATION} is used.
          *
          * @param expirationTime Expiration time for the presigned url expressed in {@link Instant}.
          */
diff --git a/core/auth/src/main/java/software/amazon/awssdk/auth/token/signer/aws/BearerTokenSigner.java b/core/auth/src/main/java/software/amazon/awssdk/auth/token/signer/aws/BearerTokenSigner.java
index 9d8e6040ccdd..08cb01bb718d 100644
--- a/core/auth/src/main/java/software/amazon/awssdk/auth/token/signer/aws/BearerTokenSigner.java
+++ b/core/auth/src/main/java/software/amazon/awssdk/auth/token/signer/aws/BearerTokenSigner.java
@@ -16,7 +16,6 @@
 package software.amazon.awssdk.auth.token.signer.aws;
 
 import software.amazon.awssdk.annotations.SdkPublicApi;
-import software.amazon.awssdk.auth.signer.internal.SignerConstant;
 import software.amazon.awssdk.auth.signer.params.TokenSignerParams;
 import software.amazon.awssdk.auth.token.credentials.SdkToken;
 import software.amazon.awssdk.auth.token.signer.SdkTokenExecutionAttribute;
@@ -24,6 +23,7 @@
 import software.amazon.awssdk.core.interceptor.ExecutionAttributes;
 import software.amazon.awssdk.core.signer.Signer;
 import software.amazon.awssdk.http.SdkHttpFullRequest;
+import software.amazon.awssdk.http.auth.aws.signer.SignerConstant;
 
 /**
  * A {@link Signer} that will sign a request with Bearer token authorization.
diff --git a/core/auth/src/test/java/software/amazon/awssdk/auth/signer/Aws4SignerTest.java b/core/auth/src/test/java/software/amazon/awssdk/auth/signer/Aws4SignerTest.java
index cfbf3263f0a6..1487a9530a56 100644
--- a/core/auth/src/test/java/software/amazon/awssdk/auth/signer/Aws4SignerTest.java
+++ b/core/auth/src/test/java/software/amazon/awssdk/auth/signer/Aws4SignerTest.java
@@ -39,8 +39,8 @@
 import software.amazon.awssdk.auth.credentials.AwsBasicCredentials;
 import software.amazon.awssdk.auth.credentials.AwsCredentials;
 import software.amazon.awssdk.auth.signer.internal.Aws4SignerUtils;
-import software.amazon.awssdk.auth.signer.internal.SignerConstant;
 import software.amazon.awssdk.auth.signer.params.SignerChecksumParams;
+import software.amazon.awssdk.http.auth.aws.signer.SignerConstant;
 import software.amazon.awssdk.auth.signer.internal.SignerTestUtils;
 import software.amazon.awssdk.core.checksums.Algorithm;
 import software.amazon.awssdk.http.SdkHttpFullRequest;
diff --git a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/crt/internal/signer/AwsChunkedV4aPayloadSigner.java b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/crt/internal/signer/AwsChunkedV4aPayloadSigner.java
index de5d16b92799..561dc2b60345 100644
--- a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/crt/internal/signer/AwsChunkedV4aPayloadSigner.java
+++ b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/crt/internal/signer/AwsChunkedV4aPayloadSigner.java
@@ -17,11 +17,11 @@
 
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.ChecksumUtil.checksumHeaderName;
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.ChecksumUtil.fromChecksumAlgorithm;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.STREAMING_ECDSA_SIGNED_PAYLOAD;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.STREAMING_ECDSA_SIGNED_PAYLOAD_TRAILER;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.STREAMING_UNSIGNED_PAYLOAD_TRAILER;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.X_AMZ_TRAILER;
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerUtils.moveContentLength;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.STREAMING_ECDSA_SIGNED_PAYLOAD;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.STREAMING_ECDSA_SIGNED_PAYLOAD_TRAILER;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.STREAMING_UNSIGNED_PAYLOAD_TRAILER;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.X_AMZ_TRAILER;
 
 import java.io.InputStream;
 import java.nio.charset.StandardCharsets;
diff --git a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/crt/internal/signer/DefaultAwsCrtV4aHttpSigner.java b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/crt/internal/signer/DefaultAwsCrtV4aHttpSigner.java
index af2a14e93823..f1df025f096a 100644
--- a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/crt/internal/signer/DefaultAwsCrtV4aHttpSigner.java
+++ b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/crt/internal/signer/DefaultAwsCrtV4aHttpSigner.java
@@ -31,8 +31,8 @@
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.ChecksumUtil.useChunkEncoding;
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.CredentialUtils.isAnonymous;
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.CredentialUtils.sanitizeCredentials;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.PRESIGN_URL_MAX_EXPIRATION_DURATION;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.X_AMZ_TRAILER;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.PRESIGN_URL_MAX_EXPIRATION_DURATION;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.X_AMZ_TRAILER;
 import static software.amazon.awssdk.http.auth.spi.signer.SdkInternalHttpSignerProperty.CHECKSUM_STORE;
 
 import java.time.Clock;
diff --git a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/crt/internal/util/CrtHttpRequestConverter.java b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/crt/internal/util/CrtHttpRequestConverter.java
index fd0bb010fd8f..f46b1bebd284 100644
--- a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/crt/internal/util/CrtHttpRequestConverter.java
+++ b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/crt/internal/util/CrtHttpRequestConverter.java
@@ -15,7 +15,7 @@
 
 package software.amazon.awssdk.http.auth.aws.crt.internal.util;
 
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.HOST;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.HOST;
 
 import java.io.ByteArrayInputStream;
 import java.net.URI;
diff --git a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/crt/internal/util/CrtUtils.java b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/crt/internal/util/CrtUtils.java
index 64004f12cf86..e77960ffe76b 100644
--- a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/crt/internal/util/CrtUtils.java
+++ b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/crt/internal/util/CrtUtils.java
@@ -15,14 +15,14 @@
 
 package software.amazon.awssdk.http.auth.aws.crt.internal.util;
 
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.AUTHORIZATION;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.HOST;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.X_AMZ_ALGORITHM;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.X_AMZ_CREDENTIAL;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.X_AMZ_DATE;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.X_AMZ_EXPIRES;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.X_AMZ_SIGNATURE;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.X_AMZ_SIGNED_HEADERS;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.AUTHORIZATION;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.HOST;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.X_AMZ_ALGORITHM;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.X_AMZ_CREDENTIAL;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.X_AMZ_DATE;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.X_AMZ_EXPIRES;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.X_AMZ_SIGNATURE;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.X_AMZ_SIGNED_HEADERS;
 
 import java.nio.charset.StandardCharsets;
 import java.util.Optional;
diff --git a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/eventstream/internal/io/SigV4DataFramePublisher.java b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/eventstream/internal/io/SigV4DataFramePublisher.java
index 04d25964b509..d97ad1884f2c 100644
--- a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/eventstream/internal/io/SigV4DataFramePublisher.java
+++ b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/eventstream/internal/io/SigV4DataFramePublisher.java
@@ -32,7 +32,7 @@
 import org.reactivestreams.Subscriber;
 import software.amazon.awssdk.annotations.SdkInternalApi;
 import software.amazon.awssdk.http.auth.aws.internal.signer.CredentialScope;
-import software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant;
+import software.amazon.awssdk.http.auth.aws.signer.SignerConstant;
 import software.amazon.awssdk.identity.spi.AwsCredentialsIdentity;
 import software.amazon.awssdk.utils.BinaryUtils;
 import software.amazon.awssdk.utils.Logger;
diff --git a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/AwsChunkedV4PayloadSigner.java b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/AwsChunkedV4PayloadSigner.java
index 8e2e3a3a168b..27970f3d7244 100644
--- a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/AwsChunkedV4PayloadSigner.java
+++ b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/AwsChunkedV4PayloadSigner.java
@@ -17,14 +17,14 @@
 
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.ChecksumUtil.checksumHeaderName;
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.ChecksumUtil.fromChecksumAlgorithm;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.AWS_CHUNKED;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.CONTENT_ENCODING;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.STREAMING_SIGNED_PAYLOAD;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.STREAMING_SIGNED_PAYLOAD_TRAILER;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.STREAMING_UNSIGNED_PAYLOAD_TRAILER;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.X_AMZ_CONTENT_SHA256;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.X_AMZ_TRAILER;
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerUtils.moveContentLength;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.AWS_CHUNKED;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.CONTENT_ENCODING;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.STREAMING_SIGNED_PAYLOAD;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.STREAMING_SIGNED_PAYLOAD_TRAILER;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.STREAMING_UNSIGNED_PAYLOAD_TRAILER;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.X_AMZ_CONTENT_SHA256;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.X_AMZ_TRAILER;
 
 import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
diff --git a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/Checksummer.java b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/Checksummer.java
index 32f73a37d865..3eb50b3d7be4 100644
--- a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/Checksummer.java
+++ b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/Checksummer.java
@@ -19,7 +19,7 @@
 import static software.amazon.awssdk.http.auth.aws.internal.signer.FlexibleChecksummer.option;
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.ChecksumUtil.ConstantChecksumAlgorithm;
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.ChecksumUtil.checksumHeaderName;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.X_AMZ_CONTENT_SHA256;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.X_AMZ_CONTENT_SHA256;
 
 import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
diff --git a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/CredentialScope.java b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/CredentialScope.java
index 2bafec156174..8d7eec9bac32 100644
--- a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/CredentialScope.java
+++ b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/CredentialScope.java
@@ -16,9 +16,9 @@
 package software.amazon.awssdk.http.auth.aws.internal.signer;
 
 
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.AWS4_TERMINATOR;
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerUtils.formatDate;
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerUtils.formatDateTime;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.AWS4_TERMINATOR;
 
 import java.time.Instant;
 import software.amazon.awssdk.annotations.Immutable;
diff --git a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/DefaultAwsV4HttpSigner.java b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/DefaultAwsV4HttpSigner.java
index 66ee6d4cf733..76a58f9c35d4 100644
--- a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/DefaultAwsV4HttpSigner.java
+++ b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/DefaultAwsV4HttpSigner.java
@@ -22,8 +22,8 @@
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.ChecksumUtil.useChunkEncoding;
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.CredentialUtils.sanitizeCredentials;
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.OptionalDependencyLoaderUtil.getEventStreamV4PayloadSigner;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.PRESIGN_URL_MAX_EXPIRATION_DURATION;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.X_AMZ_TRAILER;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.PRESIGN_URL_MAX_EXPIRATION_DURATION;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.X_AMZ_TRAILER;
 import static software.amazon.awssdk.http.auth.spi.signer.SdkInternalHttpSignerProperty.CHECKSUM_STORE;
 
 import java.time.Clock;
diff --git a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/DefaultV4RequestSigner.java b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/DefaultV4RequestSigner.java
index 21565d43551e..37b221f9b3b4 100644
--- a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/DefaultV4RequestSigner.java
+++ b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/DefaultV4RequestSigner.java
@@ -15,14 +15,14 @@
 
 package software.amazon.awssdk.http.auth.aws.internal.signer;
 
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.AWS4_SIGNING_ALGORITHM;
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerUtils.deriveSigningKey;
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerUtils.hashCanonicalRequest;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.AWS4_SIGNING_ALGORITHM;
 
 import software.amazon.awssdk.annotations.SdkInternalApi;
 import software.amazon.awssdk.http.SdkHttpRequest;
-import software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant;
 import software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerUtils;
+import software.amazon.awssdk.http.auth.aws.signer.SignerConstant;
 import software.amazon.awssdk.utils.BinaryUtils;
 import software.amazon.awssdk.utils.Logger;
 
diff --git a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/PrecomputedSha256Checksummer.java b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/PrecomputedSha256Checksummer.java
index d2d84f34aaff..f5568b0967d5 100644
--- a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/PrecomputedSha256Checksummer.java
+++ b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/PrecomputedSha256Checksummer.java
@@ -15,7 +15,7 @@
 
 package software.amazon.awssdk.http.auth.aws.internal.signer;
 
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.X_AMZ_CONTENT_SHA256;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.X_AMZ_CONTENT_SHA256;
 
 import java.nio.ByteBuffer;
 import java.util.concurrent.Callable;
diff --git a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/V4CanonicalRequest.java b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/V4CanonicalRequest.java
index 4c3501a8ed6a..227154c60d33 100644
--- a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/V4CanonicalRequest.java
+++ b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/V4CanonicalRequest.java
@@ -28,7 +28,7 @@
 import software.amazon.awssdk.annotations.Immutable;
 import software.amazon.awssdk.annotations.SdkInternalApi;
 import software.amazon.awssdk.http.SdkHttpRequest;
-import software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant;
+import software.amazon.awssdk.http.auth.aws.signer.SignerConstant;
 import software.amazon.awssdk.utils.Pair;
 import software.amazon.awssdk.utils.StringUtils;
 import software.amazon.awssdk.utils.http.SdkHttpUtils;
diff --git a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/V4RequestSigner.java b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/V4RequestSigner.java
index 67ae2af1767e..f2787ae32e5e 100644
--- a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/V4RequestSigner.java
+++ b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/V4RequestSigner.java
@@ -17,18 +17,18 @@
 
 import static software.amazon.awssdk.http.auth.aws.internal.signer.V4CanonicalRequest.getCanonicalHeaders;
 import static software.amazon.awssdk.http.auth.aws.internal.signer.V4CanonicalRequest.getSignedHeadersString;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.AWS4_SIGNING_ALGORITHM;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.X_AMZ_CONTENT_SHA256;
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerUtils.addDateHeader;
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerUtils.addHostHeader;
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerUtils.formatDateTime;
 import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerUtils.getContentHash;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.AWS4_SIGNING_ALGORITHM;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.X_AMZ_CONTENT_SHA256;
 
 import java.time.Duration;
 import java.util.List;
 import software.amazon.awssdk.annotations.SdkInternalApi;
 import software.amazon.awssdk.http.SdkHttpRequest;
-import software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant;
+import software.amazon.awssdk.http.auth.aws.signer.SignerConstant;
 import software.amazon.awssdk.identity.spi.AwsSessionCredentialsIdentity;
 import software.amazon.awssdk.utils.Pair;
 
diff --git a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/ChecksumUtil.java b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/ChecksumUtil.java
index fbe8aa1c1e12..03a55eb55cdd 100644
--- a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/ChecksumUtil.java
+++ b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/ChecksumUtil.java
@@ -15,15 +15,15 @@
 
 package software.amazon.awssdk.http.auth.aws.internal.signer.util;
 
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.STREAMING_EVENTS_PAYLOAD;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.STREAMING_SIGNED_PAYLOAD;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.STREAMING_SIGNED_PAYLOAD_TRAILER;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.STREAMING_UNSIGNED_PAYLOAD_TRAILER;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.UNSIGNED_PAYLOAD;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.X_AMZ_TRAILER;
 import static software.amazon.awssdk.http.auth.aws.signer.AwsV4FamilyHttpSigner.CHECKSUM_ALGORITHM;
 import static software.amazon.awssdk.http.auth.aws.signer.AwsV4FamilyHttpSigner.CHUNK_ENCODING_ENABLED;
 import static software.amazon.awssdk.http.auth.aws.signer.AwsV4FamilyHttpSigner.PAYLOAD_SIGNING_ENABLED;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.STREAMING_EVENTS_PAYLOAD;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.STREAMING_SIGNED_PAYLOAD;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.STREAMING_SIGNED_PAYLOAD_TRAILER;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.STREAMING_UNSIGNED_PAYLOAD_TRAILER;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.UNSIGNED_PAYLOAD;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.X_AMZ_TRAILER;
 
 import java.io.InputStream;
 import java.nio.ByteBuffer;
diff --git a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/SignerUtils.java b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/SignerUtils.java
index e4e0b711eb9e..80ef9b088a70 100644
--- a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/SignerUtils.java
+++ b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/SignerUtils.java
@@ -15,8 +15,8 @@
 
 package software.amazon.awssdk.http.auth.aws.internal.signer.util;
 
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.X_AMZ_CONTENT_SHA256;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.X_AMZ_DECODED_CONTENT_LENGTH;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.X_AMZ_CONTENT_SHA256;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.X_AMZ_DECODED_CONTENT_LENGTH;
 
 import java.io.ByteArrayInputStream;
 import java.io.InputStream;
@@ -34,9 +34,11 @@
 import software.amazon.awssdk.http.Header;
 import software.amazon.awssdk.http.SdkHttpRequest;
 import software.amazon.awssdk.http.auth.aws.internal.signer.CredentialScope;
+import software.amazon.awssdk.http.auth.aws.signer.SignerConstant;
 import software.amazon.awssdk.identity.spi.AwsCredentialsIdentity;
 import software.amazon.awssdk.utils.BinaryUtils;
 import software.amazon.awssdk.utils.Logger;
+import software.amazon.awssdk.utils.cache.FifoCache;
 import software.amazon.awssdk.utils.http.SdkHttpUtils;
 
 /**
diff --git a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/SignerConstant.java b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/signer/SignerConstant.java
similarity index 95%
rename from core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/SignerConstant.java
rename to core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/signer/SignerConstant.java
index 771fab2b4db6..70c074ad8fc7 100644
--- a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/SignerConstant.java
+++ b/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/signer/SignerConstant.java
@@ -13,12 +13,12 @@
  * permissions and limitations under the License.
  */
 
-package software.amazon.awssdk.http.auth.aws.internal.signer.util;
+package software.amazon.awssdk.http.auth.aws.signer;
 
 import java.time.Duration;
-import software.amazon.awssdk.annotations.SdkInternalApi;
+import software.amazon.awssdk.annotations.SdkProtectedApi;
 
-@SdkInternalApi
+@SdkProtectedApi
 public final class SignerConstant {
 
     public static final String AWS4_TERMINATOR = "aws4_request";
diff --git a/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/crt/internal/signer/AwsChunkedV4aPayloadSignerTest.java b/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/crt/internal/signer/AwsChunkedV4aPayloadSignerTest.java
index a46ae3c181d3..1c1e1a7ff747 100644
--- a/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/crt/internal/signer/AwsChunkedV4aPayloadSignerTest.java
+++ b/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/crt/internal/signer/AwsChunkedV4aPayloadSignerTest.java
@@ -19,9 +19,9 @@
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static software.amazon.awssdk.checksums.DefaultChecksumAlgorithm.CRC32;
 import static software.amazon.awssdk.http.auth.aws.crt.internal.util.CrtUtils.toCredentials;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.STREAMING_ECDSA_SIGNED_PAYLOAD;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.STREAMING_ECDSA_SIGNED_PAYLOAD_TRAILER;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.STREAMING_UNSIGNED_PAYLOAD_TRAILER;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.STREAMING_ECDSA_SIGNED_PAYLOAD;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.STREAMING_ECDSA_SIGNED_PAYLOAD_TRAILER;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.STREAMING_UNSIGNED_PAYLOAD_TRAILER;
 
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
diff --git a/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/internal/signer/DefaultAwsV4HttpSignerTest.java b/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/internal/signer/DefaultAwsV4HttpSignerTest.java
index ebd139e67963..e6d34f3dc388 100644
--- a/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/internal/signer/DefaultAwsV4HttpSignerTest.java
+++ b/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/internal/signer/DefaultAwsV4HttpSignerTest.java
@@ -22,7 +22,7 @@
 import static software.amazon.awssdk.http.auth.aws.TestUtils.generateBasicAsyncRequest;
 import static software.amazon.awssdk.http.auth.aws.TestUtils.generateBasicRequest;
 import static software.amazon.awssdk.http.auth.aws.TestUtils.testPayload;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.CONTENT_ENCODING;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.CONTENT_ENCODING;
 import static software.amazon.awssdk.http.auth.aws.signer.AwsV4HttpSigner.AUTH_LOCATION;
 import static software.amazon.awssdk.http.auth.aws.signer.AwsV4HttpSigner.CHECKSUM_ALGORITHM;
 import static software.amazon.awssdk.http.auth.aws.signer.AwsV4HttpSigner.CHUNK_ENCODING_ENABLED;
@@ -34,7 +34,6 @@
 import java.net.URI;
 import java.nio.charset.StandardCharsets;
 import java.time.Duration;
-import java.util.Optional;
 import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
diff --git a/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/internal/signer/V4RequestSignerTest.java b/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/internal/signer/V4RequestSignerTest.java
index 238ed41af9be..37e950be6e20 100644
--- a/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/internal/signer/V4RequestSignerTest.java
+++ b/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/internal/signer/V4RequestSignerTest.java
@@ -30,7 +30,7 @@
 import org.junit.jupiter.api.Test;
 import software.amazon.awssdk.http.SdkHttpMethod;
 import software.amazon.awssdk.http.SdkHttpRequest;
-import software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant;
+import software.amazon.awssdk.http.auth.aws.signer.SignerConstant;
 import software.amazon.awssdk.identity.spi.AwsCredentialsIdentity;
 import software.amazon.awssdk.identity.spi.AwsSessionCredentialsIdentity;
 
diff --git a/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/internal/signer/chunkedencoding/ChunkedEncodedInputStreamTest.java b/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/internal/signer/chunkedencoding/ChunkedEncodedInputStreamTest.java
index 131468a4e28d..271c32f0f6ba 100644
--- a/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/internal/signer/chunkedencoding/ChunkedEncodedInputStreamTest.java
+++ b/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/internal/signer/chunkedencoding/ChunkedEncodedInputStreamTest.java
@@ -38,7 +38,7 @@
 import org.junit.jupiter.params.provider.ValueSource;
 import software.amazon.awssdk.http.auth.aws.internal.signer.CredentialScope;
 import software.amazon.awssdk.http.auth.aws.internal.signer.RollingSigner;
-import software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant;
+import software.amazon.awssdk.http.auth.aws.signer.SignerConstant;
 import software.amazon.awssdk.identity.spi.AwsCredentialsIdentity;
 import software.amazon.awssdk.utils.Pair;
 
diff --git a/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/FifoCacheTest.java b/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/FifoCacheTest.java
index e33e53f37cf8..dacbed9b952e 100644
--- a/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/FifoCacheTest.java
+++ b/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/FifoCacheTest.java
@@ -20,6 +20,7 @@
 import static org.junit.jupiter.api.Assertions.assertThrows;
 
 import org.junit.jupiter.api.Test;
+import software.amazon.awssdk.utils.cache.FifoCache;
 
 public class FifoCacheTest {
 
diff --git a/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/SignerUtilsTest.java b/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/SignerUtilsTest.java
index 5fb5ffd284d4..4cc798559d1d 100644
--- a/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/SignerUtilsTest.java
+++ b/core/http-auth-aws/src/test/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/SignerUtilsTest.java
@@ -17,7 +17,7 @@
 
 import static org.assertj.core.api.Assertions.assertThat;
 import static software.amazon.awssdk.http.Header.CONTENT_LENGTH;
-import static software.amazon.awssdk.http.auth.aws.internal.signer.util.SignerConstant.X_AMZ_DECODED_CONTENT_LENGTH;
+import static software.amazon.awssdk.http.auth.aws.signer.SignerConstant.X_AMZ_DECODED_CONTENT_LENGTH;
 
 import java.io.ByteArrayInputStream;
 import java.io.InputStream;
diff --git a/services/s3/src/test/java/software/amazon/awssdk/services/s3/S3PresignerTest.java b/services/s3/src/test/java/software/amazon/awssdk/services/s3/S3PresignerTest.java
index ddd09c1d134f..cdf9351ffe6f 100644
--- a/services/s3/src/test/java/software/amazon/awssdk/services/s3/S3PresignerTest.java
+++ b/services/s3/src/test/java/software/amazon/awssdk/services/s3/S3PresignerTest.java
@@ -40,13 +40,13 @@
 import software.amazon.awssdk.auth.credentials.StaticCredentialsProvider;
 import software.amazon.awssdk.auth.signer.AwsS3V4Signer;
 import software.amazon.awssdk.auth.signer.internal.AbstractAwsS3V4Signer;
-import software.amazon.awssdk.auth.signer.internal.SignerConstant;
 import software.amazon.awssdk.auth.signer.params.Aws4PresignerParams;
 import software.amazon.awssdk.awscore.AwsRequestOverrideConfiguration;
 import software.amazon.awssdk.core.SdkSystemSetting;
 import software.amazon.awssdk.core.exception.SdkClientException;
 import software.amazon.awssdk.core.signer.NoOpSigner;
 import software.amazon.awssdk.http.SdkHttpFullRequest;
+import software.amazon.awssdk.http.auth.aws.signer.SignerConstant;
 import software.amazon.awssdk.regions.Region;
 import software.amazon.awssdk.services.s3.model.CreateSessionRequest;
 import software.amazon.awssdk.services.s3.model.CreateSessionResponse;
diff --git a/services/s3/src/test/java/software/amazon/awssdk/services/s3/functionaltests/MultiRegionAccessPointSigningFunctionalTest.java b/services/s3/src/test/java/software/amazon/awssdk/services/s3/functionaltests/MultiRegionAccessPointSigningFunctionalTest.java
index 08e5be5e094d..0f5ecaaf6ae4 100644
--- a/services/s3/src/test/java/software/amazon/awssdk/services/s3/functionaltests/MultiRegionAccessPointSigningFunctionalTest.java
+++ b/services/s3/src/test/java/software/amazon/awssdk/services/s3/functionaltests/MultiRegionAccessPointSigningFunctionalTest.java
@@ -27,11 +27,11 @@
 import software.amazon.awssdk.auth.credentials.AwsBasicCredentials;
 import software.amazon.awssdk.auth.credentials.StaticCredentialsProvider;
 import software.amazon.awssdk.auth.signer.AwsS3V4Signer;
-import software.amazon.awssdk.auth.signer.internal.SignerConstant;
 import software.amazon.awssdk.authcrt.signer.internal.DefaultAwsCrtS3V4aSigner;
 import software.amazon.awssdk.core.client.config.ClientOverrideConfiguration;
 import software.amazon.awssdk.core.client.config.SdkAdvancedClientOption;
 import software.amazon.awssdk.core.signer.Signer;
+import software.amazon.awssdk.http.auth.aws.signer.SignerConstant;
 import software.amazon.awssdk.regions.Region;
 import software.amazon.awssdk.services.s3.S3Client;
 import software.amazon.awssdk.services.s3.S3ClientBuilder;
diff --git a/services/s3control/src/it/java/software.amazon.awssdk.services.s3control/S3MrapIntegrationTest.java b/services/s3control/src/it/java/software.amazon.awssdk.services.s3control/S3MrapIntegrationTest.java
index 2941c1e2cf8b..3fac572e29d9 100644
--- a/services/s3control/src/it/java/software.amazon.awssdk.services.s3control/S3MrapIntegrationTest.java
+++ b/services/s3control/src/it/java/software.amazon.awssdk.services.s3control/S3MrapIntegrationTest.java
@@ -32,7 +32,6 @@
 import org.junit.jupiter.params.provider.Arguments;
 import org.junit.jupiter.params.provider.MethodSource;
 import software.amazon.awssdk.auth.signer.AwsSignerExecutionAttribute;
-import software.amazon.awssdk.auth.signer.internal.SignerConstant;
 import software.amazon.awssdk.awscore.presigner.PresignedRequest;
 import software.amazon.awssdk.core.SdkPlugin;
 import software.amazon.awssdk.core.interceptor.Context;
@@ -46,6 +45,7 @@
 import software.amazon.awssdk.http.HttpExecuteResponse;
 import software.amazon.awssdk.http.SdkHttpRequest;
 import software.amazon.awssdk.http.apache.ApacheHttpClient;
+import software.amazon.awssdk.http.auth.aws.signer.SignerConstant;
 import software.amazon.awssdk.regions.Region;
 import software.amazon.awssdk.services.s3.S3AsyncClient;
 import software.amazon.awssdk.services.s3.S3Client;
diff --git a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/FifoCache.java b/utils/src/main/java/software/amazon/awssdk/utils/cache/FifoCache.java
similarity index 93%
rename from core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/FifoCache.java
rename to utils/src/main/java/software/amazon/awssdk/utils/cache/FifoCache.java
index 4ca9ff526f16..ed52aa3f260f 100644
--- a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/FifoCache.java
+++ b/utils/src/main/java/software/amazon/awssdk/utils/cache/FifoCache.java
@@ -13,13 +13,14 @@
  * permissions and limitations under the License.
  */
 
-package software.amazon.awssdk.http.auth.aws.internal.signer.util;
+package software.amazon.awssdk.utils.cache;
 
 import java.util.concurrent.locks.ReentrantReadWriteLock;
 import java.util.concurrent.locks.ReentrantReadWriteLock.ReadLock;
 import java.util.concurrent.locks.ReentrantReadWriteLock.WriteLock;
-import software.amazon.awssdk.annotations.SdkInternalApi;
+import software.amazon.awssdk.annotations.SdkProtectedApi;
 import software.amazon.awssdk.annotations.ThreadSafe;
+import software.amazon.awssdk.utils.internal.BoundedLinkedHashMap;
 
 /**
  * A bounded cache that has a FIFO eviction policy when the cache is full.
@@ -27,7 +28,7 @@
  * @param <T> value type
  */
 @ThreadSafe
-@SdkInternalApi
+@SdkProtectedApi
 public final class FifoCache<T> {
     private final BoundedLinkedHashMap<String, T> map;
     private final ReadLock rlock;
diff --git a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/BoundedLinkedHashMap.java b/utils/src/main/java/software/amazon/awssdk/utils/internal/BoundedLinkedHashMap.java
similarity index 86%
rename from core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/BoundedLinkedHashMap.java
rename to utils/src/main/java/software/amazon/awssdk/utils/internal/BoundedLinkedHashMap.java
index 720c3f51d163..0a14fcd41a91 100644
--- a/core/http-auth-aws/src/main/java/software/amazon/awssdk/http/auth/aws/internal/signer/util/BoundedLinkedHashMap.java
+++ b/utils/src/main/java/software/amazon/awssdk/utils/internal/BoundedLinkedHashMap.java
@@ -13,7 +13,7 @@
  * permissions and limitations under the License.
  */
 
-package software.amazon.awssdk.http.auth.aws.internal.signer.util;
+package software.amazon.awssdk.utils.internal;
 
 import java.util.LinkedHashMap;
 import java.util.Map;
@@ -23,11 +23,11 @@
  * A bounded linked hash map that would remove the eldest entry when the map size exceeds a configurable maximum.
  */
 @SdkInternalApi
-final class BoundedLinkedHashMap<K, V> extends LinkedHashMap<K, V> {
+public final class BoundedLinkedHashMap<K, V> extends LinkedHashMap<K, V> {
     private static final long serialVersionUID = 1L;
     private final int maxSize;
 
-    BoundedLinkedHashMap(int maxSize) {
+    public BoundedLinkedHashMap(int maxSize) {
         this.maxSize = maxSize;
     }
 
@@ -44,7 +44,7 @@ protected boolean removeEldestEntry(Map.Entry<K, V> eldest) {
     /**
      * Returns the maximum size of this map beyond which the eldest entry will get removed.
      */
-    int getMaxSize() {
+    public int getMaxSize() {
         return maxSize;
     }
 }
diff --git a/core/auth/src/test/java/software/amazon/awssdk/auth/signer/internal/FifoCacheTest.java b/utils/src/test/java/software/amazon/awssdk/utils/cache/FifoCacheTest.java
similarity index 97%
rename from core/auth/src/test/java/software/amazon/awssdk/auth/signer/internal/FifoCacheTest.java
rename to utils/src/test/java/software/amazon/awssdk/utils/cache/FifoCacheTest.java
index 7988bc17db3e..b9790777cf8a 100644
--- a/core/auth/src/test/java/software/amazon/awssdk/auth/signer/internal/FifoCacheTest.java
+++ b/utils/src/test/java/software/amazon/awssdk/utils/cache/FifoCacheTest.java
@@ -13,7 +13,7 @@
  * permissions and limitations under the License.
  */
 
-package software.amazon.awssdk.auth.signer.internal;
+package software.amazon.awssdk.utils.cache;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNull;