Add SignatureException

library/error/api/error.klib.api

@@ -68,5 +68,12 @@ open class org.kotlincrypto.error/ShortBufferException : org.kotlincrypto.error/
     constructor <init>(kotlin/String?) // org.kotlincrypto.error/ShortBufferException.<init>|<init>(kotlin.String?){}[0]
 }
 
+open class org.kotlincrypto.error/SignatureException : org.kotlincrypto.error/GeneralSecurityException { // org.kotlincrypto.error/SignatureException|null[0]
+    constructor <init>() // org.kotlincrypto.error/SignatureException.<init>|<init>(){}[0]
+    constructor <init>(kotlin/String?) // org.kotlincrypto.error/SignatureException.<init>|<init>(kotlin.String?){}[0]
+    constructor <init>(kotlin/String?, kotlin/Throwable?) // org.kotlincrypto.error/SignatureException.<init>|<init>(kotlin.String?;kotlin.Throwable?){}[0]
+    constructor <init>(kotlin/Throwable?) // org.kotlincrypto.error/SignatureException.<init>|<init>(kotlin.Throwable?){}[0]
+}
+
 final inline fun org.kotlincrypto.error/requireParam(kotlin/Boolean) // org.kotlincrypto.error/requireParam|requireParam(kotlin.Boolean){}[0]
 final inline fun org.kotlincrypto.error/requireParam(kotlin/Boolean, kotlin/Function0<kotlin/Any>) // org.kotlincrypto.error/requireParam|requireParam(kotlin.Boolean;kotlin.Function0<kotlin.Any>){}[0]

library/error/src/commonMain/kotlin/org/kotlincrypto/error/SignatureException.kt

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2025 KotlinCrypto
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License 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.
+ **/
+@file:Suppress("EXPECT_ACTUAL_CLASSIFIERS_ARE_IN_BETA_WARNING")
+
+package org.kotlincrypto.error
+
+/**
+ * The `SignatureException` class is a generic security exception class that provides type safety
+ * for all the signature-related exception classes that extend from it.
+ * */
+public expect open class SignatureException: GeneralSecurityException {
+    public constructor()
+    public constructor(message: String?)
+    public constructor(message: String?, cause: Throwable?)
+    public constructor(cause: Throwable?)
+}

library/error/src/jvmMain/kotlin/org/kotlincrypto/error/JvmExceptions.kt

@@ -27,3 +27,4 @@ public actual typealias IllegalBlockSizeException = javax.crypto.IllegalBlockSiz
 public actual typealias KeyException = java.security.KeyException
 public actual typealias InvalidKeyException = java.security.InvalidKeyException
 public actual typealias ShortBufferException = javax.crypto.ShortBufferException
+public actual typealias SignatureException = java.security.SignatureException

library/error/src/nonJvmMain/kotlin/org/kotlincrypto/error/SignatureException.kt

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2025 KotlinCrypto
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License 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.
+ **/
+@file:Suppress("EXPECT_ACTUAL_CLASSIFIERS_ARE_IN_BETA_WARNING")
+
+package org.kotlincrypto.error
+
+/**
+ * The `SignatureException` class is a generic security exception class that provides type safety
+ * for all the signature-related exception classes that extend from it.
+ * */
+public actual open class SignatureException: GeneralSecurityException {
+    public actual constructor(): super()
+    public actual constructor(message: String?): super(message)
+    public actual constructor(message: String?, cause: Throwable?): super(message, cause)
+    public actual constructor(cause: Throwable?): super(cause)
+}