1 files changed, 63 insertions, 0 deletions
diff --git a/id/server/modules/moa-id-module-openID/src/main/java/at/gv/egovernment/moa/id/protocols/oauth20/json/OAuthSignatureAlgorithm.java b/id/server/modules/moa-id-module-openID/src/main/java/at/gv/egovernment/moa/id/protocols/oauth20/json/OAuthSignatureAlgorithm.java
new file mode 100644
index 000000000..db15516e7
--- /dev/null
+++ b/id/server/modules/moa-id-module-openID/src/main/java/at/gv/egovernment/moa/id/protocols/oauth20/json/OAuthSignatureAlgorithm.java
@@ -0,0 +1,63 @@
+package at.gv.egovernment.moa.id.protocols.oauth20.json;
+
+import java.security.NoSuchAlgorithmException;
+import java.security.NoSuchProviderException;
+import java.security.Signature;
+
+import org.apache.commons.lang.StringUtils;
+
+/**
+ * Enum of the signature algorithms supported by this package.
+ */
+public enum OAuthSignatureAlgorithm {
+	ECDSA256("SHA256withECDSA", "ECDSA256", null), RS256("SHA256withRSA", "RS256", null), ECDSA256_IAKIK("SHA1withECDSA", "ECDSA256",
+			"IAIK_ECC");
+	
+	private final String signatureName;
+	private final String algorithm;
+	private final String providerName;
+	
+	private OAuthSignatureAlgorithm(final String signatureName, final String hashAlg, final String providerName) {
+		this.signatureName = signatureName;
+		this.algorithm = hashAlg;
+		this.providerName = providerName;
+	}
+	
+	/**
+	 * What the signature algorithm is named in the "alg" parameter in a JSON Token's envelope.
+	 */
+	public String getAlgorithm() {
+		return this.algorithm;
+	}
+	
+	/**
+	 * 
+	 * @return the signature name like SHA256withECDSA or SHA256withRSA
+	 */
+	public String getSignatureName() {
+		return this.signatureName;
+	}
+	
+	/**
+	 * Calls {@link Signature#getInstance(String)} with the defined signature name
+	 * 
+	 * @return
+	 * @throws NoSuchAlgorithmException
+	 * @throws NoSuchProviderException
+	 */
+	public Signature getSignatureInstance() throws NoSuchAlgorithmException, NoSuchProviderException {
+		if (!StringUtils.isEmpty(this.providerName)) {
+			//return Signature.getInstance(this.signatureName, this.providerName);
+			return Signature.getInstance(this.signatureName, this.providerName);
+		} else {
+			return Signature.getInstance(this.signatureName);
+		}
+	}
+	
+	/**
+	 * Given the name of the algorithm in the envelope, returns the corresponding enum instance.
+	 */
+	public static OAuthSignatureAlgorithm getFromJsonName(String name) {
+		return OAuthSignatureAlgorithm.valueOf(name);
+	}
+}