Start work on _aead_

2020-08-30 11:21:53 +02:00
1 parent 99b9ee5e9d
commit 54489ef6cb
@@ -0,0 +1,210 @@
+package com.ionspin.kotlin.crypto.aead
+
+import com.ionspin.kotlin.crypto.util.toPtr
+import kotlinx.cinterop.convert
+import kotlinx.cinterop.pin
+import libsodium.crypto_aead_chacha20poly1305_encrypt
+import libsodium.crypto_aead_chacha20poly1305_ietf_encrypt
+import libsodium.crypto_aead_xchacha20poly1305_ietf_encrypt
+
+actual object AuthenticatedEncryptionWithAssociatedData {
+
+    // Ietf
+
+    // Original chacha20poly1305
+    actual fun xChaCha20Poly1305IetfEncrypt(
+        message: UByteArray,
+        associatedData: UByteArray,
+        nonce: UByteArray,
+        key: UByteArray
+    ): UByteArray {
+        val messagePinned = message.pin()
+        val associatedDataPinned = associatedData.pin()
+        val noncePinned = nonce.pin()
+        val keyPinned = key.pin()
+
+        val ciphertext = UByteArray(message.size + crypto_aead_xchacha20poly1305_ietf_ABYTES)
+        val ciphertextPinned = ciphertext.pin()
+
+        crypto_aead_xchacha20poly1305_ietf_encrypt(
+            ciphertextPinned.toPtr(),
+            null,
+            messagePinned.toPtr(),
+            message.size.convert(),
+            associatedDataPinned.toPtr(),
+            associatedData.size.convert(),
+            null, // nsec not used in this construct
+            noncePinned.toPtr(),
+            keyPinned.toPtr()
+
+        )
+
+        ciphertextPinned.unpin()
+
+        messagePinned.unpin()
+        associatedDataPinned.unpin()
+        noncePinned.unpin()
+        keyPinned.unpin()
+
+        return ciphertext
+    }
+
+    actual fun xChaCha20Poly1305IetfDecrypt(
+        ciphertext: UByteArray,
+        associatedData: UByteArray,
+        nonce: UByteArray,
+        key: UByteArray
+    ): UByteArray {
+        TODO("not implemented yet")
+    }
+
+    actual fun xChaCha20Poly1305IetfEncryptDetached(
+        message: UByteArray,
+        associatedData: UByteArray,
+        nonce: UByteArray,
+        key: UByteArray
+    ): AeadEncryptedDataAndTag {
+        TODO("not implemented yet")
+    }
+
+    actual fun xChaCha20Poly1305IetfDecryptDetached(
+        ciphertext: UByteArray,
+        tag: UByteArray,
+        associatedData: UByteArray,
+        nonce: UByteArray,
+        key: UByteArray
+    ): UByteArray {
+        TODO("not implemented yet")
+    }
+
+    actual fun chaCha20Poly1305IetfEncrypt(
+        message: UByteArray,
+        associatedData: UByteArray,
+        nonce: UByteArray,
+        key: UByteArray
+    ): UByteArray {
+        val messagePinned = message.pin()
+        val associatedDataPinned = associatedData.pin()
+        val noncePinned = nonce.pin()
+        val keyPinned = key.pin()
+
+        val ciphertext = UByteArray(message.size + crypto_aead_chacha20poly1305_ietf_ABYTES)
+        val ciphertextPinned = ciphertext.pin()
+
+        crypto_aead_chacha20poly1305_ietf_encrypt(
+            ciphertextPinned.toPtr(),
+            null,
+            messagePinned.toPtr(),
+            message.size.convert(),
+            associatedDataPinned.toPtr(),
+            associatedData.size.convert(),
+            null, // nsec not used in this construct
+            noncePinned.toPtr(),
+            keyPinned.toPtr()
+
+        )
+
+        ciphertextPinned.unpin()
+
+        messagePinned.unpin()
+        associatedDataPinned.unpin()
+        noncePinned.unpin()
+        keyPinned.unpin()
+
+        return ciphertext
+    }
+
+    actual fun chaCha20Poly1305IetfDecrypt(
+        ciphertext: UByteArray,
+        associatedData: UByteArray,
+        nonce: UByteArray,
+        key: UByteArray
+    ): UByteArray {
+        TODO("not implemented yet")
+    }
+
+    actual fun chaCha20Poly1305IetfEncryptDetached(
+        message: UByteArray,
+        associatedData: UByteArray,
+        nonce: UByteArray,
+        key: UByteArray
+    ): AeadEncryptedDataAndTag {
+        TODO("not implemented yet")
+    }
+
+    actual fun chaCha20Poly1305IetfDecryptDetached(
+        ciphertext: UByteArray,
+        tag: UByteArray,
+        associatedData: UByteArray,
+        nonce: UByteArray,
+        key: UByteArray
+    ): UByteArray {
+        TODO("not implemented yet")
+    }
+
+    actual fun chaCha20Poly1305Encrypt(
+        message: UByteArray,
+        associatedData: UByteArray,
+        nonce: UByteArray,
+        key: UByteArray
+    ): UByteArray {
+        val messagePinned = message.pin()
+        val associatedDataPinned = associatedData.pin()
+        val noncePinned = nonce.pin()
+        val keyPinned = key.pin()
+
+        val ciphertext = UByteArray(message.size + crypto_aead_chacha20poly1305_ABYTES)
+        val ciphertextPinned = ciphertext.pin()
+
+        crypto_aead_chacha20poly1305_encrypt(
+            ciphertextPinned.toPtr(),
+            null,
+            messagePinned.toPtr(),
+            message.size.convert(),
+            associatedDataPinned.toPtr(),
+            associatedData.size.convert(),
+            null, // nsec not used in this construct
+            noncePinned.toPtr(),
+            keyPinned.toPtr()
+
+        )
+
+        ciphertextPinned.unpin()
+
+        messagePinned.unpin()
+        associatedDataPinned.unpin()
+        noncePinned.unpin()
+        keyPinned.unpin()
+
+        return ciphertext
+    }
+
+    actual fun chaCha20Poly1305Decrypt(
+        ciphertext: UByteArray,
+        associatedData: UByteArray,
+        nonce: UByteArray,
+        key: UByteArray
+    ): UByteArray {
+        TODO("not implemented yet")
+    }
+
+    actual fun chaCha20Poly1305EncryptDetached(
+        message: UByteArray,
+        associatedData: UByteArray,
+        nonce: UByteArray,
+        key: UByteArray
+    ): AeadEncryptedDataAndTag {
+        TODO("not implemented yet")
+    }
+
+    actual fun chaCha20Poly1305DecryptDetached(
+        ciphertext: UByteArray,
+        tag: UByteArray,
+        associatedData: UByteArray,
+        nonce: UByteArray,
+        key: UByteArray
+    ): UByteArray {
+        TODO("not implemented yet")
+    }
+
+}