mbedtls-enlarge-cert-write-buffer.patch

diff --git a/library/x509write_crt.c b/library/x509write_crt.c
index d1d9a22..41a1ee1 100644
--- a/library/x509write_crt.c
+++ b/library/x509write_crt.c
@@ -302,7 +302,7 @@ int mbedtls_x509write_crt_der( mbedtls_x509write_cert *ctx, unsigned char *buf,
     unsigned char *c, *c2;
     unsigned char hash[64];
     unsigned char sig[MBEDTLS_MPI_MAX_SIZE];
-    unsigned char tmp_buf[2048];
+    unsigned char tmp_buf[4*2048];
     size_t sub_len = 0, pub_len = 0, sig_and_oid_len = 0, sig_len;
     size_t len = 0;
     mbedtls_pk_type_t pk_alg;
@@ -436,7 +436,7 @@ int mbedtls_x509write_crt_pem( mbedtls_x509write_cert *crt, unsigned char *buf,
                        void *p_rng )
 {
     int ret;
-    unsigned char output_buf[4096];
+    unsigned char output_buf[2*4096];
     size_t olen = 0;

     if( ( ret = mbedtls_x509write_crt_der( crt, output_buf, sizeof(output_buf),