diff --git a/programs/aes/aescrypt2.c b/programs/aes/aescrypt2.c
index 8242ea7..70f0a1e 100644
--- a/programs/aes/aescrypt2.c
+++ b/programs/aes/aescrypt2.c
@@ -80,6 +80,18 @@
 }
 #else
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/aes/crypt_and_hash.c b/programs/aes/crypt_and_hash.c
index 8d671ab..f9cf6b2 100644
--- a/programs/aes/crypt_and_hash.c
+++ b/programs/aes/crypt_and_hash.c
@@ -82,6 +82,18 @@
 }
 #else
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/hash/generic_sum.c b/programs/hash/generic_sum.c
index ed5357f..d154e59 100644
--- a/programs/hash/generic_sum.c
+++ b/programs/hash/generic_sum.c
@@ -52,6 +52,18 @@
 }
 #else
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 static int generic_wrapper( mbedtls_md_handle_t md_info, char *filename, unsigned char *sum )
 {
diff --git a/programs/hash/hello.c b/programs/hash/hello.c
index 55a0c7e..7e3b20e 100644
--- a/programs/hash/hello.c
+++ b/programs/hash/hello.c
@@ -48,6 +48,18 @@
 }
 #else
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 int main( void )
 {
diff --git a/programs/pkey/dh_client.c b/programs/pkey/dh_client.c
index 86b260c..12f4de7 100644
--- a/programs/pkey/dh_client.c
+++ b/programs/pkey/dh_client.c
@@ -72,6 +72,18 @@
 }
 #else
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 int main( void )
 {
diff --git a/programs/pkey/dh_genprime.c b/programs/pkey/dh_genprime.c
index bf5482e..8431ae6 100644
--- a/programs/pkey/dh_genprime.c
+++ b/programs/pkey/dh_genprime.c
@@ -69,6 +69,18 @@
  */
 #define GENERATOR "4"
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 int main( int argc, char **argv )
 {
diff --git a/programs/pkey/dh_server.c b/programs/pkey/dh_server.c
index c011774..78efba1 100644
--- a/programs/pkey/dh_server.c
+++ b/programs/pkey/dh_server.c
@@ -72,6 +72,18 @@
 }
 #else
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 int main( void )
 {
diff --git a/programs/pkey/ecdsa.c b/programs/pkey/ecdsa.c
index b851c31..4cde070 100644
--- a/programs/pkey/ecdsa.c
+++ b/programs/pkey/ecdsa.c
@@ -100,6 +100,18 @@
 #define dump_pubkey( a, b )
 #endif
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/pkey/gen_key.c b/programs/pkey/gen_key.c
index 23e4e14..8fcfeb4 100644
--- a/programs/pkey/gen_key.c
+++ b/programs/pkey/gen_key.c
@@ -137,6 +137,18 @@
 }
 #else
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 /*
  * global options
diff --git a/programs/pkey/key_app.c b/programs/pkey/key_app.c
index 7939309..a106dbb 100644
--- a/programs/pkey/key_app.c
+++ b/programs/pkey/key_app.c
@@ -74,6 +74,18 @@
 }
 #else
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 /*
  * global options
diff --git a/programs/pkey/key_app_writer.c b/programs/pkey/key_app_writer.c
index 16dd1b6..315810d 100644
--- a/programs/pkey/key_app_writer.c
+++ b/programs/pkey/key_app_writer.c
@@ -99,6 +99,18 @@
 }
 #else
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 /*
  * global options
diff --git a/programs/pkey/mpi_demo.c b/programs/pkey/mpi_demo.c
index ecdcd32..2ae441c 100644
--- a/programs/pkey/mpi_demo.c
+++ b/programs/pkey/mpi_demo.c
@@ -50,6 +50,18 @@
 }
 #else
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 int main( void )
 {
diff --git a/programs/pkey/pk_decrypt.c b/programs/pkey/pk_decrypt.c
index bf42507..19ec2da 100644
--- a/programs/pkey/pk_decrypt.c
+++ b/programs/pkey/pk_decrypt.c
@@ -60,6 +60,18 @@
 }
 #else
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/pkey/pk_encrypt.c b/programs/pkey/pk_encrypt.c
index a32b147..4ab2cac 100644
--- a/programs/pkey/pk_encrypt.c
+++ b/programs/pkey/pk_encrypt.c
@@ -61,6 +61,18 @@
 }
 #else
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/pkey/pk_sign.c b/programs/pkey/pk_sign.c
index ba4f779..84a613b 100644
--- a/programs/pkey/pk_sign.c
+++ b/programs/pkey/pk_sign.c
@@ -61,6 +61,18 @@
 #include <stdio.h>
 #include <string.h>
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 /*
  * For the currently used signature algorithms the buffer to store any signature
diff --git a/programs/pkey/pk_verify.c b/programs/pkey/pk_verify.c
index f80bf64..ccfc149 100644
--- a/programs/pkey/pk_verify.c
+++ b/programs/pkey/pk_verify.c
@@ -57,6 +57,18 @@
 #include <stdio.h>
 #include <string.h>
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/pkey/rsa_decrypt.c b/programs/pkey/rsa_decrypt.c
index ff71bd0..cde5f24 100644
--- a/programs/pkey/rsa_decrypt.c
+++ b/programs/pkey/rsa_decrypt.c
@@ -59,6 +59,18 @@
 }
 #else
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/pkey/rsa_encrypt.c b/programs/pkey/rsa_encrypt.c
index 4a71c15..7210578 100644
--- a/programs/pkey/rsa_encrypt.c
+++ b/programs/pkey/rsa_encrypt.c
@@ -59,6 +59,18 @@
 }
 #else
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/pkey/rsa_genkey.c b/programs/pkey/rsa_genkey.c
index d556c19..a8d5f05 100644
--- a/programs/pkey/rsa_genkey.c
+++ b/programs/pkey/rsa_genkey.c
@@ -64,6 +64,18 @@
 }
 #else
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 int main( void )
 {
diff --git a/programs/pkey/rsa_sign.c b/programs/pkey/rsa_sign.c
index 9bcd7a6..4db0528 100644
--- a/programs/pkey/rsa_sign.c
+++ b/programs/pkey/rsa_sign.c
@@ -56,6 +56,18 @@
 #include <stdio.h>
 #include <string.h>
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/pkey/rsa_sign_pss.c b/programs/pkey/rsa_sign_pss.c
index 42209e2..2e25163 100644
--- a/programs/pkey/rsa_sign_pss.c
+++ b/programs/pkey/rsa_sign_pss.c
@@ -60,6 +60,18 @@
 #include <stdio.h>
 #include <string.h>
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/pkey/rsa_verify.c b/programs/pkey/rsa_verify.c
index 94f0ef9..73f5473 100644
--- a/programs/pkey/rsa_verify.c
+++ b/programs/pkey/rsa_verify.c
@@ -55,6 +55,18 @@
 #include <stdio.h>
 #include <string.h>
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/pkey/rsa_verify_pss.c b/programs/pkey/rsa_verify_pss.c
index 148cd51..27533a8 100644
--- a/programs/pkey/rsa_verify_pss.c
+++ b/programs/pkey/rsa_verify_pss.c
@@ -60,6 +60,18 @@
 #include <stdio.h>
 #include <string.h>
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/random/gen_entropy.c b/programs/random/gen_entropy.c
index 6ae63b7..f2596f9 100644
--- a/programs/random/gen_entropy.c
+++ b/programs/random/gen_entropy.c
@@ -51,6 +51,18 @@
 }
 #else
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/random/gen_random_ctr_drbg.c b/programs/random/gen_random_ctr_drbg.c
index 59df34b..4fc8086 100644
--- a/programs/random/gen_random_ctr_drbg.c
+++ b/programs/random/gen_random_ctr_drbg.c
@@ -54,6 +54,18 @@
 }
 #else
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/ssl/dtls_client.c b/programs/ssl/dtls_client.c
index b31090f..336d695 100644
--- a/programs/ssl/dtls_client.c
+++ b/programs/ssl/dtls_client.c
@@ -109,6 +109,19 @@
 }
 #endif /* MBEDTLS_SSL_CONF_RNG */
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
+
 int main( int argc, char *argv[] )
 {
     int ret, len;
diff --git a/programs/ssl/dtls_server.c b/programs/ssl/dtls_server.c
index 1dddf8e..8190f1e 100644
--- a/programs/ssl/dtls_server.c
+++ b/programs/ssl/dtls_server.c
@@ -118,6 +118,19 @@
 }
 #endif /* MBEDTLS_SSL_CONF_RNG */
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
+
 int main( void )
 {
     int ret, len;
diff --git a/programs/ssl/mini_client.c b/programs/ssl/mini_client.c
index 7d86854..3d15c60 100644
--- a/programs/ssl/mini_client.c
+++ b/programs/ssl/mini_client.c
@@ -180,6 +180,19 @@
 }
 #endif /* MBEDTLS_SSL_CONF_RNG */
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
+
 int main( void )
 {
     int ret = exit_ok;
diff --git a/programs/ssl/ssl_client1.c b/programs/ssl/ssl_client1.c
index 9922a7e..1ab2e10 100644
--- a/programs/ssl/ssl_client1.c
+++ b/programs/ssl/ssl_client1.c
@@ -99,6 +99,19 @@
 }
 #endif /* MBEDTLS_SSL_CONF_RNG */
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
+
 int main( void )
 {
     int ret = 1, len;
diff --git a/programs/ssl/ssl_client2.c b/programs/ssl/ssl_client2.c
index 1a07c9d..e470f3b 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -925,6 +925,19 @@
 }
 #endif /* MBEDTLS_SSL_CONF_RNG */
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
+
 int main( int argc, char *argv[] )
 {
     int ret = 0, len, tail_len, i, written, frags, retry_left;
diff --git a/programs/ssl/ssl_fork_server.c b/programs/ssl/ssl_fork_server.c
index 7033b86..e9c220c 100644
--- a/programs/ssl/ssl_fork_server.c
+++ b/programs/ssl/ssl_fork_server.c
@@ -116,6 +116,19 @@
 }
 #endif /* MBEDTLS_SSL_CONF_RNG */
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
+
 int main( void )
 {
     int ret = 1, len, cnt = 0, pid;
diff --git a/programs/ssl/ssl_mail_client.c b/programs/ssl/ssl_mail_client.c
index 24000a2..6e728dc 100644
--- a/programs/ssl/ssl_mail_client.c
+++ b/programs/ssl/ssl_mail_client.c
@@ -375,6 +375,19 @@
 }
 #endif /* MBEDTLS_SSL_CONF_RNG */
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
+
 int main( int argc, char *argv[] )
 {
     int ret = 1, len;
diff --git a/programs/ssl/ssl_server.c b/programs/ssl/ssl_server.c
index e13af91..0ad63b1 100644
--- a/programs/ssl/ssl_server.c
+++ b/programs/ssl/ssl_server.c
@@ -111,6 +111,19 @@
 }
 #endif /* MBEDTLS_SSL_CONF_RNG */
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
+
 int main( void )
 {
     int ret, len;
diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index c0476dc..0470bf3 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -1536,6 +1536,19 @@
 }
 #endif /* MBEDTLS_SSL_CONF_RNG */
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
+
 int main( int argc, char *argv[] )
 {
     int ret = 0, len, written, frags, exchanges_left;
diff --git a/programs/test/benchmark.c b/programs/test/benchmark.c
index 88e3290..9c6aafb 100644
--- a/programs/test/benchmark.c
+++ b/programs/test/benchmark.c
@@ -258,6 +258,18 @@
          rsa, dhm, ecdsa, ecdh;
 } todo_list;
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
 
 int main( int argc, char *argv[] )
 {
diff --git a/programs/test/selftest.c b/programs/test/selftest.c
index 727054e..82f08fa 100644
--- a/programs/test/selftest.c
+++ b/programs/test/selftest.c
@@ -279,6 +279,19 @@
 };
 #endif /* MBEDTLS_SELF_TEST */
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
+
 int main( int argc, char *argv[] )
 {
 #if defined(MBEDTLS_SELF_TEST)
diff --git a/programs/test/zeroize.c b/programs/test/zeroize.c
index 29cc0ac..6e7db4e 100644
--- a/programs/test/zeroize.c
+++ b/programs/test/zeroize.c
@@ -59,6 +59,19 @@
     mbedtls_printf( "       zeroize <FILE>\n" );
 }
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
+
 int main( int argc, char** argv )
 {
     int exit_code = MBEDTLS_EXIT_FAILURE;
diff --git a/programs/x509/cert_app.c b/programs/x509/cert_app.c
index b82f83f..bdc2017 100644
--- a/programs/x509/cert_app.c
+++ b/programs/x509/cert_app.c
@@ -165,6 +165,19 @@
 }
 #endif /* MBEDTLS_SSL_CONF_RNG */
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
+
 int main( int argc, char *argv[] )
 {
     int ret = 1;
diff --git a/programs/x509/cert_req.c b/programs/x509/cert_req.c
index f3d9157..33e4078 100644
--- a/programs/x509/cert_req.c
+++ b/programs/x509/cert_req.c
@@ -154,6 +154,19 @@
     return( 0 );
 }
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
+
 int main( int argc, char *argv[] )
 {
     int ret = 1;
diff --git a/programs/x509/cert_write.c b/programs/x509/cert_write.c
index ef40447..a0ef2dd 100644
--- a/programs/x509/cert_write.c
+++ b/programs/x509/cert_write.c
@@ -214,6 +214,19 @@
     return( 0 );
 }
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
+
 int main( int argc, char *argv[] )
 {
     int ret = 1;
diff --git a/programs/x509/crl_app.c b/programs/x509/crl_app.c
index fc22188..87793f7 100644
--- a/programs/x509/crl_app.c
+++ b/programs/x509/crl_app.c
@@ -72,6 +72,19 @@
     const char *filename;       /* filename of the certificate file     */
 } opt;
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
+
 int main( int argc, char *argv[] )
 {
     int ret = 1;
diff --git a/programs/x509/req_app.c b/programs/x509/req_app.c
index ed80155..ddde3f6 100644
--- a/programs/x509/req_app.c
+++ b/programs/x509/req_app.c
@@ -72,6 +72,19 @@
     const char *filename;       /* filename of the certificate request  */
 } opt;
 
+#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
+int mbedtls_hardware_poll( void *data, unsigned char *output,
+                           size_t len, size_t *olen )
+{
+    size_t i;
+    (void) data;
+    for( i = 0; i < len; ++i )
+        output[i] = rand();
+    *olen = len;
+    return( 0 );
+}
+#endif
+
 int main( int argc, char *argv[] )
 {
     int ret = 1;