diff --git a/pg/src/main/java/org/bouncycastle/openpgp/api/OpenPGPCertificate.java b/pg/src/main/java/org/bouncycastle/openpgp/api/OpenPGPCertificate.java
index 76d933b41c..a3c76d257b 100644
--- a/pg/src/main/java/org/bouncycastle/openpgp/api/OpenPGPCertificate.java
+++ b/pg/src/main/java/org/bouncycastle/openpgp/api/OpenPGPCertificate.java
@@ -18,6 +18,7 @@
 import org.bouncycastle.openpgp.api.exception.MissingIssuerCertException;
 import org.bouncycastle.openpgp.api.util.UTCUtil;
 import org.bouncycastle.openpgp.operator.PGPContentVerifierBuilderProvider;
+import org.bouncycastle.util.io.Streams;
 
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
@@ -126,6 +127,25 @@ public static OpenPGPCertificate fromAsciiArmor(
                 implementation);
     }
 
+    public static OpenPGPCertificate fromInputStream(InputStream inputStream)
+            throws IOException
+    {
+        return fromInputStream(inputStream, OpenPGPImplementation.getInstance());
+    }
+
+    public static OpenPGPCertificate fromInputStream(InputStream inputStream, OpenPGPImplementation implementation)
+            throws IOException
+    {
+        byte[] bytes = Streams.readAll(inputStream);
+        return fromBytes(bytes, implementation);
+    }
+
+    public static OpenPGPCertificate fromBytes(byte[] bytes)
+            throws IOException
+    {
+        return fromBytes(bytes, OpenPGPImplementation.getInstance());
+    }
+
     public static OpenPGPCertificate fromBytes(
             byte[] bytes,
             OpenPGPImplementation implementation)
diff --git a/pg/src/main/java/org/bouncycastle/openpgp/api/OpenPGPKey.java b/pg/src/main/java/org/bouncycastle/openpgp/api/OpenPGPKey.java
index baa09c8f29..be4ac05457 100644
--- a/pg/src/main/java/org/bouncycastle/openpgp/api/OpenPGPKey.java
+++ b/pg/src/main/java/org/bouncycastle/openpgp/api/OpenPGPKey.java
@@ -14,6 +14,7 @@
 import org.bouncycastle.openpgp.PGPUtil;
 import org.bouncycastle.openpgp.operator.PBESecretKeyDecryptor;
 import org.bouncycastle.openpgp.operator.PBESecretKeyDecryptorBuilderProvider;
+import org.bouncycastle.util.io.Streams;
 
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
@@ -112,6 +113,25 @@ public static OpenPGPKey fromAsciiArmor(
                 implementation);
     }
 
+    public static OpenPGPKey fromInputStream(InputStream inputStream)
+            throws IOException
+    {
+        return fromInputStream(inputStream, OpenPGPImplementation.getInstance());
+    }
+
+    public static OpenPGPKey fromInputStream(InputStream inputStream, OpenPGPImplementation implementation)
+            throws IOException
+    {
+        return fromBytes(Streams.readAll(inputStream), implementation);
+    }
+
+    public static OpenPGPKey fromBytes(
+            byte[] bytes)
+            throws IOException
+    {
+        return fromBytes(bytes, OpenPGPImplementation.getInstance());
+    }
+
     public static OpenPGPKey fromBytes(
             byte[] bytes,
             OpenPGPImplementation implementation)