File fix_signedness.patch of Package libu2f-host.19616

diff --color -ruN libu2f-host-1.1.10-ori/src/u2f-host.c libu2f-host-1.1.10/src/u2f-host.c
--- libu2f-host-1.1.10-ori/src/u2f-host.c	2019-03-27 07:56:35.000000000 +0100
+++ libu2f-host-1.1.10/src/u2f-host.c	2021-05-05 19:03:28.128543464 +0200
@@ -117,7 +117,7 @@
 	  }
 	sscanf (args_info.command_arg, "%hhx", &command);
 	rc =
-	  u2fh_sendrecv (devs, 0, command, challenge, chal_len - 1, out,
+	  u2fh_sendrecv (devs, 0, command, (const unsigned char *)challenge, chal_len - 1, out,
 			 &outlen);
       }
       break;
diff --color -ruN libu2f-host-1.1.10-ori/u2f-host/authenticate.c libu2f-host-1.1.10/u2f-host/authenticate.c
--- libu2f-host-1.1.10-ori/u2f-host/authenticate.c	2019-02-22 12:31:45.000000000 +0100
+++ libu2f-host-1.1.10/u2f-host/authenticate.c	2021-05-05 19:00:56.812254344 +0200
@@ -104,7 +104,7 @@
     return U2FH_MEMORY_ERROR;
 
   base64_init_encodestate (&b64ctx);
-  cnt = base64_encode_block (buf, len, b64enc, &b64ctx);
+  cnt = base64_encode_block ((const char *)buf, len, b64enc, &b64ctx);
   base64_encode_blockend (b64enc + cnt, &b64ctx);
 
   base64_init_encodestate (&b64ctx);
@@ -158,7 +158,7 @@
 
   base64_init_decodestate (&b64);
   khlen = base64_decode_block (khb64, kh64len,
-			       data + HOSIZE + CHALLBINLEN + 1, &b64);
+			       (char *)data + HOSIZE + CHALLBINLEN + 1, &b64);
   data[HOSIZE + CHALLBINLEN] = khlen;
 
   /* FIXME: Support asynchronous usage, through a new u2fh_cmdflags
diff --color -ruN libu2f-host-1.1.10-ori/u2f-host/register.c libu2f-host-1.1.10/u2f-host/register.c
--- libu2f-host-1.1.10-ori/u2f-host/register.c	2019-02-22 12:31:45.000000000 +0100
+++ libu2f-host-1.1.10/u2f-host/register.c	2021-05-05 18:57:59.923915542 +0200
@@ -88,7 +88,7 @@
     return U2FH_MEMORY_ERROR;
 
   base64_init_encodestate (&b64ctx);
-  cnt = base64_encode_block (buf, len, b64resp, &b64ctx);
+  cnt = base64_encode_block ((const char *)buf, len, b64resp, &b64ctx);
   base64_encode_blockend (b64resp + cnt, &b64ctx);
 
   base64_init_encodestate (&b64ctx);