Enable windows build in builg.gradle, add argon2 nput validation

multiplatform-crypto/build.gradle.kts

@@ -144,13 +144,13 @@ kotlin {
         }
     }
 
-//    mingwX86() {
+    mingwX86() {
-//        binaries {
+        binaries {
-//            staticLib {
+            staticLib {
-//
+
-//            }
+            }
-//        }
+        }
-//    }
+    }
 
     linuxArm32Hfp() {
         binaries {
@@ -275,16 +275,16 @@ kotlin {
             dependsOn(nativeTest)
         }
 
-//        val mingwX86Main by getting {
+        val mingwX86Main by getting {
-//            dependsOn(commonMain)
+            dependsOn(commonMain)
-//            dependencies {
+            dependencies {
-//                implementation(Deps.Native.coroutines)
+                implementation(Deps.Native.coroutines)
-//            }
+            }
-//        }
+        }
-//
+
-//        val mingwX86Test by getting {
+        val mingwX86Test by getting {
-//            dependsOn(commonTest)
+            dependsOn(commonTest)
-//        }
+        }
 
         val mingwX64Main by getting {
             dependsOn(commonMain)

multiplatform-crypto/src/commonMain/kotlin/com/ionspin/kotlin/crypto/keyderivation/argon2/Argon2.kt

@@ -22,6 +22,7 @@ import com.ionspin.kotlin.bignum.integer.toBigInteger
 import com.ionspin.kotlin.crypto.hash.blake2b.Blake2b
 import com.ionspin.kotlin.crypto.keyderivation.argon2.Argon2Utils.argonBlake2bArbitraryLenghtHash
 import com.ionspin.kotlin.crypto.keyderivation.argon2.Argon2Utils.compressionFunctionG
+import com.ionspin.kotlin.crypto.keyderivation.argon2.Argon2Utils.validateArgonParameters
 import com.ionspin.kotlin.crypto.util.fromLittleEndianArrayToUInt
 import com.ionspin.kotlin.crypto.util.hexColumsPrint
 import com.ionspin.kotlin.crypto.util.toLittleEndianUByteArray
@@ -53,6 +54,19 @@ class Argon2(
     val associatedData: Array<UByte> = emptyArray(),
     val argonType: ArgonType = ArgonType.Argon2id
 ) {
+    init {
+        validateArgonParameters(
+            password,
+            salt,
+            parallelism,
+            tagLength,
+            requestedMemorySize,
+            numberOfIterations,
+            key,
+            associatedData,
+            argonType
+        )
+    }
     //We support only the latest version
     val versionNumber: UInt = 0x13U
 
@@ -60,9 +74,6 @@ class Argon2(
     val memorySize = if (requestedMemorySize == 0U) {
         ((8 * parallelism) * 2).toUInt()
     } else {
-        if (requestedMemorySize < (8 * parallelism).toUInt()) {
-            throw RuntimeException("Requested memory size must be larger than 8 * parallelism. Requested size: $requestedMemorySize")
-        }
         requestedMemorySize
     }
     val blockCount = (memorySize / (4U * parallelism.toUInt())) * (4U * parallelism.toUInt())

multiplatform-crypto/src/commonMain/kotlin/com/ionspin/kotlin/crypto/keyderivation/argon2/Argon2Exceptions.kt

@@ -0,0 +1,31 @@
+/*
+ *    Copyright 2019 Ugljesa Jovanovic
+ *
+ *    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
+ *
+ *        http://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.
+ */
+
+package com.ionspin.kotlin.crypto.keyderivation.argon2
+
+/**
+ * Created by Ugljesa Jovanovic
+ * ugljesa.jovanovic@ionspin.com
+ * on 16-May-2020
+ */
+class Argon2TagTooShort(tagLength: UInt) : RuntimeException("Too short tag (output) requested. Requested: $tagLength")
+class Argon2TagTooLong(tagLength: UInt) : RuntimeException("Too long tag (output) requested. Requested: $tagLength")
+class Argon2TimeTooShort(iterations: UInt) : RuntimeException("Too short time parameter (Too few iterations). Requested iterations: $iterations")
+class Argon2TimeTooLong(iterations: UInt) : RuntimeException("Too long time parameter (Too many iterations). Requested iterations: $iterations")
+class Argon2MemoryTooLitlle(requestedMemorySize: UInt) : RuntimeException("Requested memory size must be larger than 8 * parallelism. Requested size: $requestedMemorySize")
+class Argon2MemoryTooMuch(requestedMemorySize: UInt) : RuntimeException("Requested memory size too large. Requested size: $requestedMemorySize")
+class Argon2LanesTooFew(parallelism: Int) : RuntimeException("Too few, or invalid number of threads requested $parallelism")
+class Argon2LanesTooMany(parallelism: Int) : RuntimeException("Too many threads requested (parallelism). Requested: $parallelism")

multiplatform-crypto/src/commonMain/kotlin/com/ionspin/kotlin/crypto/keyderivation/argon2/Argon2Utils.kt

@@ -135,4 +135,44 @@ object Argon2Utils {
 
         return concat
     }
+
+    /**
+     * Validates the argon 2 parameters.
+     * Since Kotlin arrays that we are currently using cannot have more than 2^31 bytes, we don't need to check
+     * sizes for password, salt, key and associated data. Also since UInt is 32bit we cant set more than 2^32-1 of
+     * tagLength, requested memory size and number of iterations, so no need to check for upper bound, just lower.
+     */
+    fun validateArgonParameters(
+        password: Array<UByte>,
+        salt: Array<UByte>,
+        parallelism: Int ,
+        tagLength: UInt,
+        requestedMemorySize: UInt ,
+        numberOfIterations: UInt ,
+        key: Array<UByte>,
+        associatedData: Array<UByte>,
+        argonType: ArgonType
+    ) {
+
+        //Parallelism
+        if (parallelism > 0xFFFFFF) {
+            throw Argon2LanesTooMany(parallelism)
+        }
+        if (parallelism <= 0) {
+            throw Argon2LanesTooFew(parallelism)
+        }
+        //Tag length
+        if (tagLength <= 0U) {
+            throw Argon2TagTooShort(tagLength)
+        }
+        //Requested memory
+        if (requestedMemorySize < 8U || requestedMemorySize < (8 * parallelism).toUInt()) {
+            throw Argon2MemoryTooLitlle(requestedMemorySize)
+        }
+        //Number of iterations
+        if (numberOfIterations <= 0U) {
+            throw Argon2TimeTooShort(numberOfIterations)
+        }
+
+    }
 }