Enhancement to expose the PKCS 7 pad functionality (wc_PKCS7_PadData).

wolfcrypt/src/pkcs7.c

@@ -3006,8 +3006,8 @@ static int wc_PKCS7_GetPadSize(word32 inputSz, word32 blockSz)
 
 /* pad input data to blockSz chunk, place in outSz. out must be big enough
  * for input + pad bytes. See wc_PKCS7_GetPadLength() helper. */
-static int wc_PKCS7_PadData(byte* in, word32 inSz, byte* out, word32 outSz,
-                            word32 blockSz)
+int wc_PKCS7_PadData(byte* in, word32 inSz, byte* out, word32 outSz,
+                     word32 blockSz)
 {
     int i, padSz;
 

wolfcrypt/test/test.c

@@ -16429,6 +16429,12 @@ static int pkcs7signed_run_vectors(byte* rsaCert, word32 rsaCertSz,
     if (out == NULL)
         return -7700;
 
+    ret = wc_PKCS7_PadData((byte*)data, sizeof(data), out, outSz, 16);
+    if (ret < 0) {
+        XFREE(out, HEAP_HINT, DYNAMIC_TYPE_TMP_BUFFER);
+        return -7710;
+    }
+
 #ifndef HAVE_FIPS
     ret = wc_InitRng_ex(&rng, HEAP_HINT, devId);
 #else

wolfssl/wolfcrypt/pkcs7.h

@@ -146,6 +146,9 @@ WOLFSSL_API int  wc_PKCS7_DecodeEnvelopedData(PKCS7* pkcs7, byte* pkiMsg,
                                           word32 pkiMsgSz, byte* output,
                                           word32 outputSz);
 
+WOLFSSL_API int wc_PKCS7_PadData(byte* in, word32 inSz, byte* out, word32 outSz,
+                                 word32 blockSz);
+
 #ifndef NO_PKCS7_ENCRYPTED_DATA
 WOLFSSL_API int  wc_PKCS7_EncodeEncryptedData(PKCS7* pkcs7,
                                           byte* output, word32 outputSz);