Extend x509write_crt suite by RSA_ALT signing test
diff --git a/tests/data_files/server1.cert_type_noauthid.crt b/tests/data_files/server1.cert_type_noauthid.crt
new file mode 100644
index 0000000..3c0f237
--- /dev/null
+++ b/tests/data_files/server1.cert_type_noauthid.crt
@@ -0,0 +1,20 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
\ No newline at end of file
diff --git a/tests/data_files/server1.key_usage_noauthid.crt b/tests/data_files/server1.key_usage_noauthid.crt
new file mode 100644
index 0000000..2223807
--- /dev/null
+++ b/tests/data_files/server1.key_usage_noauthid.crt
@@ -0,0 +1,20 @@
+-----BEGIN CERTIFICATE-----
+MIIDLjCCAhagAwIBAgIBATANBgkqhkiG9w0BAQUFADA7MQswCQYDVQQGEwJOTDER
+MA8GA1UEChMIUG9sYXJTU0wxGTAXBgNVBAMTEFBvbGFyU1NMIFRlc3QgQ0EwHhcN
+MTEwMjEyMTQ0NDA2WhcNMjEwMjEyMTQ0NDA2WjA8MQswCQYDVQQGEwJOTDERMA8G
+A1UEChMIUG9sYXJTU0wxGjAYBgNVBAMTEVBvbGFyU1NMIFNlcnZlciAxMIIBIjAN
+BgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqQIfPUBq1VVTi/027oJlLhVhXom/
+uOhFkNvuiBZS0/FDUEeWEllkh2v9K+BG+XO+3c+S4ZFb7Wagb4kpeUWA0INq1UFD
+d185fAkER4KwVzlw7aPsFRkeqDMIR8EFQqn9TMO0390GH00QUUBncxMPQPhtgSVf
+CrFTxjB+FTms+Vruf5KepgVb5xOXhbUjktnUJAbVCSWJdQfdphqPPwkZvq1lLGTr
+lZvc/kFeF6babFtpzAK6FCwWJJxK3M3Q91Jnc/EtoCP9fvQxyi1wyokLBNsupk9w
+bp7OvViJ4lNZnm5akmXiiD8MlBmj3eXonZUT7Snbq3AS3FrKaxerUoJUsQIDAQAB
+ozwwOjAJBgNVHRMEAjAAMB0GA1UdDgQWBBQfdNY/KcF0dEU7BRIsPai9Q1kCpjAO
+BgNVHQ8BAf8EBAMCAeAwDQYJKoZIhvcNAQEFBQADggEBAJZRIISo4+rDvHXXaS43
+shfSkyJyur588mNJFzty1WVfhaIkwjMIGHeGlHS29fwgPsBUgelZ3Qv3J7wsm42+
+3BwQet0l36FIBIJtFhcrTGlaCFUo/5bZJUPGgiOFB9ec/8lOszVlX8cH34UimWqg
+q2wXRGoXWPbuRnUWlJhI2bAv5ri9Mt7Rs4nK4wyS1ZjC8ByXMn4tk3yMjkUEqu0o
+37zoQiF+FJApu0eTKK5goA2hisyfCX9eJMppAbcyvJwoj/AmiBkXW8J3kEMJtLmZ
+VoxXYknnXumxBLxUrGuamR/3cmbaJHIHE1Dqox7hB+9miyp4lue1/uXHCocGAIeF
+JTo=
+-----END CERTIFICATE-----
\ No newline at end of file
diff --git a/tests/data_files/server1.noauthid.crt b/tests/data_files/server1.noauthid.crt
new file mode 100644
index 0000000..99c004f
--- /dev/null
+++ b/tests/data_files/server1.noauthid.crt
@@ -0,0 +1,19 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/tests/suites/test_suite_x509write.data b/tests/suites/test_suite_x509write.data
index 66f0993..a8e7f25 100644
--- a/tests/suites/test_suite_x509write.data
+++ b/tests/suites/test_suite_x509write.data
@@ -44,19 +44,35 @@
 
 Certificate write check Server1 SHA1
 depends_on:POLARSSL_SHA1_C:POLARSSL_RSA_C:POLARSSL_PKCS1_V15:POLARSSL_DES_C:POLARSSL_CIPHER_MODE_CBC:POLARSSL_MD5_C
-x509_crt_check:"data_files/server1.key":"":"C=NL,O=PolarSSL,CN=PolarSSL Server 1":"data_files/test-ca.key":"PolarSSLTest":"C=NL,O=PolarSSL,CN=PolarSSL Test CA":"1":"20110212144406":"20210212144406":POLARSSL_MD_SHA1:0:0:-1:"data_files/server1.crt"
+x509_crt_check:"data_files/server1.key":"":"C=NL,O=PolarSSL,CN=PolarSSL Server 1":"data_files/test-ca.key":"PolarSSLTest":"C=NL,O=PolarSSL,CN=PolarSSL Test CA":"1":"20110212144406":"20210212144406":POLARSSL_MD_SHA1:0:0:1:-1:"data_files/server1.crt":0
 
 Certificate write check Server1 SHA1, key_usage
 depends_on:POLARSSL_SHA1_C:POLARSSL_RSA_C:POLARSSL_PKCS1_V15:POLARSSL_DES_C:POLARSSL_CIPHER_MODE_CBC:POLARSSL_MD5_C
-x509_crt_check:"data_files/server1.key":"":"C=NL,O=PolarSSL,CN=PolarSSL Server 1":"data_files/test-ca.key":"PolarSSLTest":"C=NL,O=PolarSSL,CN=PolarSSL Test CA":"1":"20110212144406":"20210212144406":POLARSSL_MD_SHA1:KU_DIGITAL_SIGNATURE | KU_NON_REPUDIATION | KU_KEY_ENCIPHERMENT:0:-1:"data_files/server1.key_usage.crt"
+x509_crt_check:"data_files/server1.key":"":"C=NL,O=PolarSSL,CN=PolarSSL Server 1":"data_files/test-ca.key":"PolarSSLTest":"C=NL,O=PolarSSL,CN=PolarSSL Test CA":"1":"20110212144406":"20210212144406":POLARSSL_MD_SHA1:KU_DIGITAL_SIGNATURE | KU_NON_REPUDIATION | KU_KEY_ENCIPHERMENT:0:1:-1:"data_files/server1.key_usage.crt":0
 
 Certificate write check Server1 SHA1, ns_cert_type
 depends_on:POLARSSL_SHA1_C:POLARSSL_RSA_C:POLARSSL_PKCS1_V15:POLARSSL_DES_C:POLARSSL_CIPHER_MODE_CBC:POLARSSL_MD5_C
-x509_crt_check:"data_files/server1.key":"":"C=NL,O=PolarSSL,CN=PolarSSL Server 1":"data_files/test-ca.key":"PolarSSLTest":"C=NL,O=PolarSSL,CN=PolarSSL Test CA":"1":"20110212144406":"20210212144406":POLARSSL_MD_SHA1:0:NS_CERT_TYPE_SSL_SERVER:-1:"data_files/server1.cert_type.crt"
+x509_crt_check:"data_files/server1.key":"":"C=NL,O=PolarSSL,CN=PolarSSL Server 1":"data_files/test-ca.key":"PolarSSLTest":"C=NL,O=PolarSSL,CN=PolarSSL Test CA":"1":"20110212144406":"20210212144406":POLARSSL_MD_SHA1:0:NS_CERT_TYPE_SSL_SERVER:1:-1:"data_files/server1.cert_type.crt":0
 
 Certificate write check Server1 SHA1, version 1
 depends_on:POLARSSL_SHA1_C:POLARSSL_RSA_C:POLARSSL_PKCS1_V15:POLARSSL_DES_C:POLARSSL_CIPHER_MODE_CBC:POLARSSL_MD5_C
-x509_crt_check:"data_files/server1.key":"":"C=NL,O=PolarSSL,CN=PolarSSL Server 1":"data_files/test-ca.key":"PolarSSLTest":"C=NL,O=PolarSSL,CN=PolarSSL Test CA":"1":"20110212144406":"20210212144406":POLARSSL_MD_SHA1:0:0:X509_CRT_VERSION_1:"data_files/server1.v1.crt"
+x509_crt_check:"data_files/server1.key":"":"C=NL,O=PolarSSL,CN=PolarSSL Server 1":"data_files/test-ca.key":"PolarSSLTest":"C=NL,O=PolarSSL,CN=PolarSSL Test CA":"1":"20110212144406":"20210212144406":POLARSSL_MD_SHA1:0:0:1:X509_CRT_VERSION_1:"data_files/server1.v1.crt":0
+
+Certificate write check Server1 SHA1, RSA_ALT
+depends_on:POLARSSL_SHA1_C:POLARSSL_RSA_C:POLARSSL_PKCS1_V15:POLARSSL_DES_C:POLARSSL_CIPHER_MODE_CBC:POLARSSL_MD5_C
+x509_crt_check:"data_files/server1.key":"":"C=NL,O=PolarSSL,CN=PolarSSL Server 1":"data_files/test-ca.key":"PolarSSLTest":"C=NL,O=PolarSSL,CN=PolarSSL Test CA":"1":"20110212144406":"20210212144406":POLARSSL_MD_SHA1:0:0:0:-1:"data_files/server1.noauthid.crt":0
+
+Certificate write check Server1 SHA1, RSA_ALT, key_usage
+depends_on:POLARSSL_SHA1_C:POLARSSL_RSA_C:POLARSSL_PKCS1_V15:POLARSSL_DES_C:POLARSSL_CIPHER_MODE_CBC:POLARSSL_MD5_C
+x509_crt_check:"data_files/server1.key":"":"C=NL,O=PolarSSL,CN=PolarSSL Server 1":"data_files/test-ca.key":"PolarSSLTest":"C=NL,O=PolarSSL,CN=PolarSSL Test CA":"1":"20110212144406":"20210212144406":POLARSSL_MD_SHA1:KU_DIGITAL_SIGNATURE | KU_NON_REPUDIATION | KU_KEY_ENCIPHERMENT:0:0:-1:"data_files/server1.key_usage_noauthid.crt":0
+
+Certificate write check Server1 SHA1, RSA_ALT, ns_cert_type
+depends_on:POLARSSL_SHA1_C:POLARSSL_RSA_C:POLARSSL_PKCS1_V15:POLARSSL_DES_C:POLARSSL_CIPHER_MODE_CBC:POLARSSL_MD5_C
+x509_crt_check:"data_files/server1.key":"":"C=NL,O=PolarSSL,CN=PolarSSL Server 1":"data_files/test-ca.key":"PolarSSLTest":"C=NL,O=PolarSSL,CN=PolarSSL Test CA":"1":"20110212144406":"20210212144406":POLARSSL_MD_SHA1:0:NS_CERT_TYPE_SSL_SERVER:0:-1:"data_files/server1.cert_type_noauthid.crt":0
+
+Certificate write check Server1 SHA1, RSA_ALT, version 1
+depends_on:POLARSSL_SHA1_C:POLARSSL_RSA_C:POLARSSL_PKCS1_V15:POLARSSL_DES_C:POLARSSL_CIPHER_MODE_CBC:POLARSSL_MD5_C
+x509_crt_check:"data_files/server1.key":"":"C=NL,O=PolarSSL,CN=PolarSSL Server 1":"data_files/test-ca.key":"PolarSSLTest":"C=NL,O=PolarSSL,CN=PolarSSL Test CA":"1":"20110212144406":"20210212144406":POLARSSL_MD_SHA1:0:0:0:X509_CRT_VERSION_1:"data_files/server1.v1.crt":0
 
 X509 String to Names #1
 x509_string_to_names:"C=NL,O=Offspark\, Inc., OU=PolarSSL":"C=NL, O=Offspark, Inc., OU=PolarSSL":0
diff --git a/tests/suites/test_suite_x509write.function b/tests/suites/test_suite_x509write.function
index 825a593..1ab43c5 100644
--- a/tests/suites/test_suite_x509write.function
+++ b/tests/suites/test_suite_x509write.function
@@ -3,6 +3,30 @@
 #include "polarssl/x509_csr.h"
 #include "polarssl/pem.h"
 #include "polarssl/oid.h"
+#include "polarssl/rsa.h"
+
+#if defined(POLARSSL_RSA_C)
+int rsa_decrypt_func( void *ctx, int mode, size_t *olen,
+                       const unsigned char *input, unsigned char *output,
+                       size_t output_max_len )
+{
+    return( rsa_pkcs1_decrypt( (rsa_context *) ctx, NULL, NULL, mode, olen,
+                               input, output, output_max_len ) );
+}
+int rsa_sign_func( void *ctx,
+                   int (*f_rng)(void *, unsigned char *, size_t), void *p_rng,
+                   int mode, md_type_t md_alg, unsigned int hashlen,
+                   const unsigned char *hash, unsigned char *sig )
+{
+    return( rsa_pkcs1_sign( (rsa_context *) ctx, f_rng, p_rng, mode,
+                            md_alg, hashlen, hash, sig ) );
+}
+size_t rsa_key_len_func( void *ctx )
+{
+    return( ((const rsa_context *) ctx)->len );
+}
+#endif /* POLARSSL_RSA_C */
+
 /* END_HEADER */
 
 /* BEGIN_DEPENDENCIES
@@ -75,10 +99,12 @@
                      char *subject_name, char *issuer_key_file,
                      char *issuer_pwd, char *issuer_name,
                      char *serial_str, char *not_before, char *not_after,
-                     int md_type, int key_usage, int cert_type, int ver,
-                     char *cert_check_file )
+                     int md_type, int key_usage, int cert_type, int auth_ident,
+                     int ver, char *cert_check_file, int rsa_alt )
 {
-    pk_context subject_key, issuer_key;
+    pk_context subject_key, issuer_key, issuer_key_alt;
+    pk_context *key = &issuer_key;
+
     x509write_cert crt;
     unsigned char buf[4096];
     unsigned char check_buf[5000];
@@ -93,14 +119,29 @@
     mpi_init( &serial );
     pk_init( &subject_key );
     pk_init( &issuer_key );
+    pk_init( &issuer_key_alt );
+
+    x509write_crt_init( &crt );
 
     TEST_ASSERT( pk_parse_keyfile( &subject_key, subject_key_file,
                                          subject_pwd ) == 0 );
     TEST_ASSERT( pk_parse_keyfile( &issuer_key, issuer_key_file,
                                          issuer_pwd ) == 0 );
+
+    /* For RSA PK contexts, create a copy as an alternative RSA context. */
+    if( rsa_alt == 1 && pk_get_type( &issuer_key ) == POLARSSL_PK_RSA )
+    {
+        TEST_ASSERT( pk_init_ctx_rsa_alt( &issuer_key_alt,
+                                          pk_rsa( issuer_key ),
+                                          rsa_decrypt_func,
+                                          rsa_sign_func,
+                                          rsa_key_len_func ) == 0 );
+
+        key = &issuer_key_alt;
+    }
+
     TEST_ASSERT( mpi_read_string( &serial, 10, serial_str ) == 0 );
 
-    x509write_crt_init( &crt );
     if( ver != -1 )
         x509write_crt_set_version( &crt, ver );
     TEST_ASSERT( x509write_crt_set_serial( &crt, &serial ) == 0 );
@@ -110,13 +151,14 @@
     TEST_ASSERT( x509write_crt_set_issuer_name( &crt, issuer_name ) == 0 );
     TEST_ASSERT( x509write_crt_set_subject_name( &crt, subject_name ) == 0 );
     x509write_crt_set_subject_key( &crt, &subject_key );
-    x509write_crt_set_issuer_key( &crt, &issuer_key );
+    x509write_crt_set_issuer_key( &crt, key );
 
     if( crt.version >= X509_CRT_VERSION_3 )
     {
         TEST_ASSERT( x509write_crt_set_basic_constraints( &crt, 0, 0 ) == 0 );
         TEST_ASSERT( x509write_crt_set_subject_key_identifier( &crt ) == 0 );
-        TEST_ASSERT( x509write_crt_set_authority_key_identifier( &crt ) == 0 );
+        if( auth_ident != 0 )
+            TEST_ASSERT( x509write_crt_set_authority_key_identifier( &crt ) == 0 );
         if( key_usage != 0 )
             TEST_ASSERT( x509write_crt_set_key_usage( &crt, key_usage ) == 0 );
         if( cert_type != 0 )
@@ -152,6 +194,7 @@
 exit:
     x509write_crt_free( &crt );
     pk_free( &issuer_key );
+    pk_free( &issuer_key_alt );
     pk_free( &subject_key );
     mpi_free( &serial );
 }