Support for RSA-SHA1

signpost-core/src/main/java/oauth/signpost/signature/RsaSha1MessageSigner.java

@@ -0,0 +1,47 @@
+package oauth.signpost.signature;
+
+import oauth.signpost.OAuth;
+import oauth.signpost.exception.OAuthMessageSignerException;
+import oauth.signpost.http.HttpParameters;
+import oauth.signpost.http.HttpRequest;
+
+import java.io.UnsupportedEncodingException;
+import java.security.GeneralSecurityException;
+import java.security.KeyFactory;
+import java.security.PrivateKey;
+import java.security.Signature;
+import java.security.spec.PKCS8EncodedKeySpec;
+
+@SuppressWarnings("serial")
+public class RsaSha1MessageSigner extends OAuthMessageSigner {
+
+    @Override
+    public String getSignatureMethod() {
+        return "RSA-SHA1";
+    }
+
+    @Override
+    public String sign(HttpRequest request, HttpParameters requestParameters) throws OAuthMessageSignerException {
+        byte[] privateKeyBytes = decodeBase64(getConsumerSecret());
+        PKCS8EncodedKeySpec privateKeySpec = new PKCS8EncodedKeySpec(privateKeyBytes);
+
+        try {
+            PrivateKey privateKey = KeyFactory.getInstance("RSA").generatePrivate(privateKeySpec);
+            Signature signer = Signature.getInstance("SHA1withRSA");
+
+            String sbs = new SignatureBaseString(request, requestParameters).generate();
+            OAuth.debugOut("SBS", sbs);
+            byte[] text = sbs.getBytes(OAuth.ENCODING);
+
+            signer.initSign(privateKey);
+            signer.update(text);
+
+            return base64Encode(signer.sign());
+        } catch (GeneralSecurityException e) {
+            throw new OAuthMessageSignerException(e);
+        } catch (UnsupportedEncodingException e) {
+            throw new OAuthMessageSignerException(e);
+        }
+    }
+
+}

signpost-core/src/test/java/oauth/signpost/signature/OAuthMessageSignerTest.java

@@ -63,4 +63,48 @@ public void shouldComputeCorrectHmacSha256Signature() throws Exception {
 
         assertEquals("0gCtTYQAxqCKhIE0sltgx7UgHkAs10vrpuYE7xpRBnE=", signer.sign(request, params));
     }
+
+    @Test
+    public void shouldComputeCorrectRsaSha1Signature() throws Exception {
+        // based on the reference test case from
+        // http://oauth.pbwiki.com/TestCases
+        final String PRIVATE_KEY =
+                "MIICdgIBADANBgkqhkiG9w0BAQEFAASCAmAwggJcAgEAAoGBALRiMLAh9iimur8V" +
+                "A7qVvdqxevEuUkW4K+2KdMXmnQbG9Aa7k7eBjK1S+0LYmVjPKlJGNXHDGuy5Fw/d" +
+                "7rjVJ0BLB+ubPK8iA/Tw3hLQgXMRRGRXXCn8ikfuQfjUS1uZSatdLB81mydBETlJ" +
+                "hI6GH4twrbDJCR2Bwy/XWXgqgGRzAgMBAAECgYBYWVtleUzavkbrPjy0T5FMou8H" +
+                "X9u2AC2ry8vD/l7cqedtwMPp9k7TubgNFo+NGvKsl2ynyprOZR1xjQ7WgrgVB+mm" +
+                "uScOM/5HVceFuGRDhYTCObE+y1kxRloNYXnx3ei1zbeYLPCHdhxRYW7T0qcynNmw" +
+                "rn05/KO2RLjgQNalsQJBANeA3Q4Nugqy4QBUCEC09SqylT2K9FrrItqL2QKc9v0Z" +
+                "zO2uwllCbg0dwpVuYPYXYvikNHHg+aCWF+VXsb9rpPsCQQDWR9TT4ORdzoj+Nccn" +
+                "qkMsDmzt0EfNaAOwHOmVJ2RVBspPcxt5iN4HI7HNeG6U5YsFBb+/GZbgfBT3kpNG" +
+                "WPTpAkBI+gFhjfJvRw38n3g/+UeAkwMI2TJQS4n8+hid0uus3/zOjDySH3XHCUno" +
+                "cn1xOJAyZODBo47E+67R4jV1/gzbAkEAklJaspRPXP877NssM5nAZMU0/O/NGCZ+" +
+                "3jPgDUno6WbJn5cqm8MqWhW1xGkImgRk+fkDBquiq4gPiT898jusgQJAd5Zrr6Q8" +
+                "AO/0isr/3aa6O6NLQxISLKcPDk2NOccAfS/xOtfOz4sJYM3+Bs4Io9+dZGSDCA54" +
+                "Lw03eHTNQghS0A==";
+
+        OAuthMessageSigner signer = new RsaSha1MessageSigner();
+        signer.setConsumerSecret(PRIVATE_KEY);
+
+        HttpRequest request = mock(HttpRequest.class);
+        when(request.getRequestUrl()).thenReturn("http://photos.example.net/photos");
+        when(request.getMethod()).thenReturn("GET");
+
+        HttpParameters OAUTH_PARAMS = new HttpParameters();
+        OAUTH_PARAMS.put("oauth_consumer_key", "dpf43f3p2l4k3l03");
+        OAUTH_PARAMS.put("oauth_signature_method", "RSA-SHA1");
+        OAUTH_PARAMS.put("oauth_timestamp", "1196666512");
+        OAUTH_PARAMS.put("oauth_nonce", "13917289812797014437");
+        OAUTH_PARAMS.put("oauth_version", "1.0");
+
+        HttpParameters params = new HttpParameters();
+        params.putAll(OAUTH_PARAMS);
+        params.put("file", "vacaction.jpg");
+        params.put("size", "original");
+
+        assertEquals("jvTp/wX1TYtByB1m+Pbyo0lnCOLIsyGCH7wke8AUs3BpnwZJtAuEJkvQL2/9n4s5wUmUl4aCI4BwpraNx4RtEXMe5qg5T1LVTGliMRpKasKsW//e+RinhejgCuzoH26dyF8iY2ZZ/5D1ilgeijhV/vBka5twt399mXwaYdCwFYE=", signer.sign(request, params));
+    }
+
+
 }