add tests

Signed-off-by: alperozturk96 <alper_ozturk@proton.me>

Author: alperozturk96

app/src/androidTest/java/com/owncloud/android/utils/EncryptionUtilsV2IT.kt

@@ -758,6 +758,8 @@ class EncryptionUtilsV2IT : EncryptionIT() {
             certificateEnc2,
             certificateT1
         )
+
+        assertTrue(encryptionUtilsV2.verifySignedData(signed, certs))
     }
 
     @Throws(Throwable::class)
@@ -778,6 +780,8 @@ class EncryptionUtilsV2IT : EncryptionIT() {
             EncryptionUtils.convertCertFromString(enc2Cert),
             certificate
         )
+
+        assertTrue(encryptionUtilsV2.verifySignedData(signed, certs))
     }
 
     @Test

app/src/main/java/com/nextcloud/utils/CmsSignatureVerifier.kt

@@ -7,23 +7,7 @@
 
 package com.nextcloud.utils
 
-/**
- * JNI bridge that delegates CMS signature verification to native OpenSSL.
- *
- * The native implementation mirrors the iOS `verifySignatureCMS` logic:
- * - Parses the DER-encoded CMS structure
- * - Verifies the detached signature without CA-chain validation (CMS_NO_SIGNER_CERT_VERIFY)
- * - Matches the resulting signer identity against each supplied PEM certificate
- *   (equivalent to `CMS_SignerInfo_cert_cmp`)
- */
 class CmsSignatureVerifier {
-    /**
-     * @param cmsData      DER-encoded CMS ContentInfo (detached, without embedded content)
-     * @param messageData  The raw content bytes that were signed
-     * @param certificates PEM-encoded X.509 certificates to match against the CMS signer
-     * @return `true` if the signature is cryptographically valid and the signer matches
-     *         at least one of the supplied certificates
-     */
     external fun verifySignedData(cmsData: ByteArray, messageData: ByteArray, certificates: Array<String>): Boolean
 
     companion object {