diff --git a/ChangeLog b/ChangeLog
index 2886e0f..84324f2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -30,6 +30,7 @@
      RSA implementations. Raised by J.B. in the Mbed TLS forum. Fixes #1011.
    * Don't print X.509 version tag for v1 CRT's, and omit extensions for
      non-v3 CRT's.
+   * Fix bugs in RSA test suite under MBEDTLS_NO_PLATFORM_ENTROPY. #1023 #1024
 
 Changes
    * Extend cert_write example program by options to set the CRT version
diff --git a/library/entropy.c b/library/entropy.c
index c6f44df..edd5721 100644
--- a/library/entropy.c
+++ b/library/entropy.c
@@ -61,6 +61,9 @@
 {
     memset( ctx, 0, sizeof(entropy_context) );
 
+    /* Reminder: Update ENTROPY_HAVE_DEFAULT in the test files
+      * when adding more strong entropy sources here. */
+
 #if defined(POLARSSL_THREADING_C)
     polarssl_mutex_init( &ctx->mutex );
 #endif
diff --git a/tests/scripts/generate_code.pl b/tests/scripts/generate_code.pl
index e13a2d0..5d7d219 100755
--- a/tests/scripts/generate_code.pl
+++ b/tests/scripts/generate_code.pl
@@ -194,7 +194,7 @@
 # and make check code
 my $dep_check_code;
 
-my @res = $test_data =~ /^depends_on:([\w:]+)/msg;
+my @res = $test_data =~ /^depends_on:([!:\w]+)/msg;
 my %case_deps;
 foreach my $deps (@res)
 {
@@ -205,7 +205,23 @@
 }
 while( my ($key, $value) = each(%case_deps) )
 {
-    $dep_check_code .= << "END";
+    if( substr($key, 0, 1) eq "!" )
+    {
+        my $key = substr($key, 1);
+        $dep_check_code .= << "END";
+    if( strcmp( str, "!$key" ) == 0 )
+    {
+#if !defined($key)
+        return( 0 );
+#else
+        return( 1 );
+#endif
+    }
+END
+    }
+    else
+    {
+        $dep_check_code .= << "END";
     if( strcmp( str, "$key" ) == 0 )
     {
 #if defined($key)
@@ -215,6 +231,7 @@
 #endif
     }
 END
+    }
 }
 
 # Make mapping code
diff --git a/tests/suites/helpers.function b/tests/suites/helpers.function
index 1dc6e09..82847ff 100644
--- a/tests/suites/helpers.function
+++ b/tests/suites/helpers.function
@@ -55,6 +55,17 @@
 }
 #endif
 
+/* Helper flags for complex dependencies */
+
+/* Indicates whether we expect mbedtls_entropy_init
+ * to initialize some strong entropy source. */
+#if !defined(POLARSSL_NO_DEFAULT_ENTROPY_SOURCES) &&   \
+      ( !defined(POLARSSL_NO_PLATFORM_ENTROPY)  ||     \
+         defined(POLARSSL_HAVEGE_C)             ||     \
+         defined(POLARSSL_TIMING_C) )
+#define ENTROPY_HAVE_DEFAULT
+#endif
+
 static int unhexify( unsigned char *obuf, const char *ibuf )
 {
     unsigned char c, c2;
@@ -214,7 +225,7 @@
  * This function returns random based on a buffer it receives.
  *
  * rng_state shall be a pointer to a rnd_buf_info structure.
- * 
+ *
  * The number of bytes released from the buffer on each call to
  * the random function is specified by per_call. (Can be between
  * 1 and 4)
diff --git a/tests/suites/test_suite_entropy.data b/tests/suites/test_suite_entropy.data
index d81061c..4a2c137 100644
--- a/tests/suites/test_suite_entropy.data
+++ b/tests/suites/test_suite_entropy.data
@@ -31,10 +31,10 @@
 Entropy threshold #2
 entropy_threshold:32:1:32
 
-Entropy thershold #3
+Entropy threshold #3
 entropy_threshold:16:0:POLARSSL_ERR_ENTROPY_SOURCE_FAILED
 
-Entropy thershold #4
+Entropy threshold #4
 entropy_threshold:1024:1:POLARSSL_ERR_ENTROPY_SOURCE_FAILED
 
 Entropy self test
diff --git a/tests/suites/test_suite_entropy.function b/tests/suites/test_suite_entropy.function
index c46246c..50f7830 100644
--- a/tests/suites/test_suite_entropy.function
+++ b/tests/suites/test_suite_entropy.function
@@ -40,7 +40,7 @@
  * END_DEPENDENCIES
  */
 
-/* BEGIN_CASE depends_on:POLARSSL_FS_IO */
+/* BEGIN_CASE depends_on:POLARSSL_FS_IO:ENTROPY_HAVE_DEFAULT */
 void entropy_seed_file( char *path, int ret )
 {
     entropy_context ctx;
@@ -78,7 +78,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE */
+/* BEGIN_CASE depends_on:ENTROPY_HAVE_DEFAULT */
 void entropy_func_len( int len, int ret )
 {
     entropy_context ctx;
@@ -137,7 +137,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE */
+/* BEGIN_CASE depends_on:ENTROPY_HAVE_DEFAULT */
 void entropy_threshold( int threshold, int chunk_size, int result )
 {
     entropy_context ctx;
@@ -167,7 +167,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:POLARSSL_SELF_TEST */
+/* BEGIN_CASEdepends_on:ENTROPY_HAVE_DEFAULT:POLARSSL_SELF_TEST */
 void entropy_selftest( )
 {
     TEST_ASSERT( entropy_self_test( 0 ) == 0 );
diff --git a/tests/suites/test_suite_rsa.function b/tests/suites/test_suite_rsa.function
index d4f3308..3d13edd 100644
--- a/tests/suites/test_suite_rsa.function
+++ b/tests/suites/test_suite_rsa.function
@@ -658,7 +658,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:POLARSSL_CTR_DRBG_C:POLARSSL_ENTROPY_C */
+/* BEGIN_CASE depends_on:POLARSSL_CTR_DRBG_C:POLARSSL_ENTROPY_C:ENTROPY_HAVE_DEFAULT */
 void rsa_gen_key( int nrbits, int exponent, int result)
 {
     rsa_context ctx;
@@ -667,12 +667,12 @@
     const char *pers = "test_suite_rsa";
 
     entropy_init( &entropy );
+    rsa_init( &ctx, 0, 0 );
+
     TEST_ASSERT( ctr_drbg_init( &ctr_drbg, entropy_func, &entropy,
                                 (const unsigned char *) pers,
                                 strlen( pers ) ) == 0 );
 
-    rsa_init( &ctx, 0, 0 );
-
     TEST_ASSERT( rsa_gen_key( &ctx, ctr_drbg_random, &ctr_drbg, nrbits,
                  exponent ) == result );
     if( result == 0 )