First pass addition of driver wrappers

Transparent driver test functions not yet implemented.

Signed-off-by: Paul Elliott <paul.elliott@arm.com>

include/psa/crypto_struct.h

@@ -156,6 +156,14 @@ struct psa_aead_operation_s
     psa_algorithm_t alg;
     psa_key_type_t key_type;
 
+    /** Unique ID indicating which driver got assigned to do the
+     * operation. Since driver contexts are driver-specific, swapping
+     * drivers halfway through the operation is not supported.
+     * ID values are auto-generated in psa_crypto_driver_wrappers.h
+     * ID value zero means the context is not valid or not assigned to
+     * any driver (i.e. none of the driver contexts are active). */
+    unsigned int id;
+
     unsigned int key_set : 1;
     unsigned int nonce_set : 1;
     unsigned int lengths_set : 1;
@@ -197,7 +205,7 @@ struct psa_aead_operation_s
     } ctx;
 };
 
-#define PSA_AEAD_OPERATION_INIT {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0}, {0}}
+#define PSA_AEAD_OPERATION_INIT {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0}, {0}}
 static inline struct psa_aead_operation_s psa_aead_operation_init( void )
 {
     const struct psa_aead_operation_s v = PSA_AEAD_OPERATION_INIT;

library/psa_crypto_driver_wrappers.c

@@ -1292,6 +1292,377 @@ psa_status_t psa_driver_wrapper_aead_decrypt(
     }
 }
 
+psa_status_t psa_driver_wrapper_aead_encrypt_setup(
+   psa_aead_operation_t *operation,
+   const psa_key_attributes_t *attributes,
+   const uint8_t *key_buffer, size_t key_buffer_size,
+   psa_algorithm_t alg )
+{
+    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+    psa_key_location_t location =
+        PSA_KEY_LIFETIME_GET_LOCATION( attributes->core.lifetime );
+
+    switch( location )
+    {
+        case PSA_KEY_LOCATION_LOCAL_STORAGE:
+            /* Key is stored in the slot in export representation, so
+             * cycle through all known transparent accelerators */
+
+#if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
+#if defined(PSA_CRYPTO_DRIVER_TEST)
+//          status = test_transparent_aead_encrypt_setup(
+//                      operation, attributes,
+//                      key_buffer, key_buffer_size,
+//                      alg );
+            /* Declared with fallback == true */
+            if( status == PSA_SUCCESS )
+                operation->id = PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID;
+
+            if( status != PSA_ERROR_NOT_SUPPORTED )
+                return( status );
+#endif /* PSA_CRYPTO_DRIVER_TEST */
+#endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
+
+            /* Fell through, meaning no accelerator supports this operation */
+            status = mbedtls_psa_aead_encrypt_setup(
+                        operation, attributes,
+                        key_buffer, key_buffer_size,
+                        alg );
+
+            if( status == PSA_SUCCESS )
+                operation->id = PSA_CRYPTO_MBED_TLS_DRIVER_ID;
+
+            return( status );
+
+        /* Add cases for opaque driver here */
+
+        default:
+            /* Key is declared with a lifetime not known to us */
+            (void)status;
+            return( PSA_ERROR_INVALID_ARGUMENT );
+    }
+}
+
+psa_status_t psa_driver_wrapper_aead_decrypt_setup(
+   psa_aead_operation_t *operation,
+   const psa_key_attributes_t *attributes,
+   const uint8_t *key_buffer, size_t key_buffer_size,
+   psa_algorithm_t alg )
+{
+    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+    psa_key_location_t location =
+        PSA_KEY_LIFETIME_GET_LOCATION( attributes->core.lifetime );
+
+    switch( location )
+    {
+        case PSA_KEY_LOCATION_LOCAL_STORAGE:
+            /* Key is stored in the slot in export representation, so
+             * cycle through all known transparent accelerators */
+
+#if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
+#if defined(PSA_CRYPTO_DRIVER_TEST)
+//          status = test_transparent_aead_decrypt_setup(
+//                      operation, attributes,
+//                      key_buffer, key_buffer_size,
+//                      alg );
+            /* Declared with fallback == true */
+            if( status == PSA_SUCCESS )
+                operation->id = PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID;
+
+            if( status != PSA_ERROR_NOT_SUPPORTED )
+                return( status );
+#endif /* PSA_CRYPTO_DRIVER_TEST */
+#endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
+
+            /* Fell through, meaning no accelerator supports this operation */
+            status = mbedtls_psa_aead_decrypt_setup(
+                        operation, attributes,
+                        key_buffer, key_buffer_size,
+                        alg );
+
+            if( status == PSA_SUCCESS )
+                operation->id = PSA_CRYPTO_MBED_TLS_DRIVER_ID;
+
+            return( status );
+
+        /* Add cases for opaque driver here */
+
+        default:
+            /* Key is declared with a lifetime not known to us */
+            (void)status;
+            return( PSA_ERROR_INVALID_ARGUMENT );
+    }
+}
+
+psa_status_t psa_driver_wrapper_aead_generate_nonce(
+   psa_aead_operation_t *operation,
+   uint8_t *nonce,
+   size_t nonce_size,
+   size_t *nonce_length )
+{
+    switch( operation->id )
+    {
+#if defined(MBEDTLS_PSA_BUILTIN_CIPHER)
+        case PSA_CRYPTO_MBED_TLS_DRIVER_ID:
+            return( mbedtls_psa_aead_generate_nonce( operation, nonce, nonce_size,
+                                                     nonce_length ) );
+#endif /* MBEDTLS_PSA_BUILTIN_CIPHER */
+
+#if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
+#if defined(PSA_CRYPTO_DRIVER_TEST)
+        case PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID:
+//          return( test_transparent_aead_generate_nonce(
+//                      operation, nonce, nonce_size, nonce_length ) );
+
+        /* Add cases for opaque driver here */
+
+#endif /* PSA_CRYPTO_DRIVER_TEST */
+#endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
+    }
+
+    (void)nonce;
+    (void)nonce_size;
+    (void)nonce_length;
+
+    return( PSA_ERROR_INVALID_ARGUMENT );
+}
+
+psa_status_t psa_driver_wrapper_aead_set_nonce(
+   psa_aead_operation_t *operation,
+   const uint8_t *nonce,
+   size_t nonce_length )
+{
+    switch( operation->id )
+    {
+#if defined(MBEDTLS_PSA_BUILTIN_CIPHER)
+        case PSA_CRYPTO_MBED_TLS_DRIVER_ID:
+            return( mbedtls_psa_aead_set_nonce( operation, nonce, nonce_length ) );
+
+#endif /* MBEDTLS_PSA_BUILTIN_CIPHER */
+
+#if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
+#if defined(PSA_CRYPTO_DRIVER_TEST)
+        case PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID:
+//          return( test_transparent_aead_set_nonce(
+//                      operation, nonce, nonce_length ) );
+
+        /* Add cases for opaque driver here */
+
+#endif /* PSA_CRYPTO_DRIVER_TEST */
+#endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
+    }
+
+    (void)nonce;
+    (void)nonce_length;
+
+    return( PSA_ERROR_INVALID_ARGUMENT );
+}
+
+psa_status_t psa_driver_wrapper_aead_set_lengths(
+   psa_aead_operation_t *operation,
+   size_t ad_length,
+   size_t plaintext_length )
+{
+    switch( operation->id )
+    {
+#if defined(MBEDTLS_PSA_BUILTIN_CIPHER)
+        case PSA_CRYPTO_MBED_TLS_DRIVER_ID:
+            return( mbedtls_psa_aead_set_lengths( operation, ad_length, plaintext_length ) );
+
+#endif /* MBEDTLS_PSA_BUILTIN_CIPHER */
+
+#if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
+#if defined(PSA_CRYPTO_DRIVER_TEST)
+        case PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID:
+//          return( test_transparent_aead_set_lengths(
+//                      operation, ad_length, plaintext_length ) );
+
+        /* Add cases for opaque driver here */
+
+#endif /* PSA_CRYPTO_DRIVER_TEST */
+#endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
+    }
+
+    (void)ad_length;
+    (void)plaintext_length;
+
+    return( PSA_ERROR_INVALID_ARGUMENT );
+}
+
+psa_status_t psa_driver_wrapper_aead_update_ad(
+   psa_aead_operation_t *operation,
+   const uint8_t *input,
+   size_t input_length )
+{
+    switch( operation->id )
+    {
+#if defined(MBEDTLS_PSA_BUILTIN_CIPHER)
+        case PSA_CRYPTO_MBED_TLS_DRIVER_ID:
+            return( mbedtls_psa_aead_update_ad( operation, input, input_length ) );
+
+#endif /* MBEDTLS_PSA_BUILTIN_CIPHER */
+
+#if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
+#if defined(PSA_CRYPTO_DRIVER_TEST)
+        case PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID:
+//          return( test_transparent_aead_update_ad(
+//                      operation, input, input_length ) );
+
+        /* Add cases for opaque driver here */
+
+#endif /* PSA_CRYPTO_DRIVER_TEST */
+#endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
+    }
+
+    (void)input;
+    (void)input_length;
+
+    return( PSA_ERROR_INVALID_ARGUMENT );
+}
+
+psa_status_t psa_driver_wrapper_aead_update(
+   psa_aead_operation_t *operation,
+   const uint8_t *input,
+   size_t input_length,
+   uint8_t *output,
+   size_t output_size,
+   size_t *output_length )
+{
+    switch( operation->id )
+    {
+#if defined(MBEDTLS_PSA_BUILTIN_CIPHER)
+        case PSA_CRYPTO_MBED_TLS_DRIVER_ID:
+            return( mbedtls_psa_aead_update( operation, input, input_length, output,
+                                             output_size, output_length ) );
+
+#endif /* MBEDTLS_PSA_BUILTIN_CIPHER */
+
+#if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
+#if defined(PSA_CRYPTO_DRIVER_TEST)
+        case PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID:
+//          return( test_transparent_aead_update(
+//                      operation, input, input_length, ouput, output_size,
+//                      output_length ) );
+
+        /* Add cases for opaque driver here */
+
+#endif /* PSA_CRYPTO_DRIVER_TEST */
+#endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
+    }
+
+    (void)input;
+    (void)input_length;
+    (void)output;
+    (void)output_size;
+    (void)output_length;
+
+    return( PSA_ERROR_INVALID_ARGUMENT );
+}
+
+psa_status_t psa_driver_wrapper_aead_finish(
+   psa_aead_operation_t *operation,
+   uint8_t *ciphertext,
+   size_t ciphertext_size,
+   size_t *ciphertext_length,
+   uint8_t *tag,
+   size_t tag_size,
+   size_t *tag_length )
+{
+    switch( operation->id )
+    {
+#if defined(MBEDTLS_PSA_BUILTIN_CIPHER)
+        case PSA_CRYPTO_MBED_TLS_DRIVER_ID:
+            return( mbedtls_psa_aead_finish( operation, ciphertext, ciphertext_size,
+                                             ciphertext_length, tag, tag_size, tag_length ) );
+
+#endif /* MBEDTLS_PSA_BUILTIN_CIPHER */
+
+#if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
+#if defined(PSA_CRYPTO_DRIVER_TEST)
+        case PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID:
+//          return( test_transparent_aead_finish(
+//                      operation, ciphertext, ciphertext_size,
+//                      ciphertext_length, tag, tag_size, tag_length ) );
+
+        /* Add cases for opaque driver here */
+
+#endif /* PSA_CRYPTO_DRIVER_TEST */
+#endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
+    }
+
+    (void)ciphertext;
+    (void)ciphertext_size;
+    (void)ciphertext_length;
+    (void)tag;
+    (void)tag_size;
+    (void)tag_length;
+
+    return( PSA_ERROR_INVALID_ARGUMENT );
+}
+
+psa_status_t psa_driver_wrapper_aead_verify(
+   psa_aead_operation_t *operation,
+   uint8_t *plaintext,
+   size_t plaintext_size,
+   size_t *plaintext_length,
+   const uint8_t *tag,
+   size_t tag_length )
+{
+    switch( operation->id )
+    {
+#if defined(MBEDTLS_PSA_BUILTIN_CIPHER)
+        case PSA_CRYPTO_MBED_TLS_DRIVER_ID:
+            return( mbedtls_psa_aead_verify( operation, plaintext, plaintext_size,
+                                             plaintext_length, tag, tag_length ) );
+
+#endif /* MBEDTLS_PSA_BUILTIN_CIPHER */
+
+#if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
+#if defined(PSA_CRYPTO_DRIVER_TEST)
+        case PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID:
+//          return( test_transparent_aead_verify(
+//                      operation, ciphertext, ciphertext_size,
+//                      ciphertext_length, tag, tag_length ) );
+
+        /* Add cases for opaque driver here */
+
+#endif /* PSA_CRYPTO_DRIVER_TEST */
+#endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
+    }
+
+    (void)plaintext;
+    (void)plaintext_size;
+    (void)plaintext_length;
+    (void)tag;
+    (void)tag_length;
+
+    return( PSA_ERROR_INVALID_ARGUMENT );
+}
+
+psa_status_t psa_driver_wrapper_aead_abort(
+   psa_aead_operation_t *operation )
+{
+    switch( operation->id )
+    {
+#if defined(MBEDTLS_PSA_BUILTIN_CIPHER)
+        case PSA_CRYPTO_MBED_TLS_DRIVER_ID:
+            return( mbedtls_psa_aead_abort( operation ) );
+
+#endif /* MBEDTLS_PSA_BUILTIN_CIPHER */
+
+#if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
+#if defined(PSA_CRYPTO_DRIVER_TEST)
+        case PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID:
+//          return( test_transparent_aead_abort( operation ) );
+
+        /* Add cases for opaque driver here */
+
+#endif /* PSA_CRYPTO_DRIVER_TEST */
+#endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
+    }
+
+    return( PSA_ERROR_INVALID_ARGUMENT );
+}
 
 /*
  * MAC functions

library/psa_crypto_driver_wrappers.h

@@ -183,6 +183,67 @@ psa_status_t psa_driver_wrapper_aead_decrypt(
     const uint8_t *ciphertext, size_t ciphertext_length,
     uint8_t *plaintext, size_t plaintext_size, size_t *plaintext_length );
 
+psa_status_t psa_driver_wrapper_aead_encrypt_setup(
+    psa_aead_operation_t *operation,
+    const psa_key_attributes_t *attributes,
+    const uint8_t *key_buffer, size_t key_buffer_size,
+    psa_algorithm_t alg );
+
+psa_status_t psa_driver_wrapper_aead_decrypt_setup(
+    psa_aead_operation_t *operation,
+    const psa_key_attributes_t *attributes,
+    const uint8_t *key_buffer, size_t key_buffer_size,
+    psa_algorithm_t alg );
+
+psa_status_t psa_driver_wrapper_aead_generate_nonce(
+    psa_aead_operation_t *operation,
+    uint8_t *nonce,
+    size_t nonce_size,
+    size_t *nonce_length );
+
+psa_status_t psa_driver_wrapper_aead_set_nonce(
+    psa_aead_operation_t *operation,
+    const uint8_t *nonce,
+    size_t nonce_length );
+
+psa_status_t psa_driver_wrapper_aead_set_lengths(
+    psa_aead_operation_t *operation,
+    size_t ad_length,
+    size_t plaintext_length );
+
+psa_status_t psa_driver_wrapper_aead_update_ad(
+    psa_aead_operation_t *operation,
+    const uint8_t *input,
+    size_t input_length );
+
+psa_status_t psa_driver_wrapper_aead_update(
+    psa_aead_operation_t *operation,
+    const uint8_t *input,
+    size_t input_length,
+    uint8_t *output,
+    size_t output_size,
+    size_t *output_length );
+
+psa_status_t psa_driver_wrapper_aead_finish(
+    psa_aead_operation_t *operation,
+    uint8_t *ciphertext,
+    size_t ciphertext_size,
+    size_t *ciphertext_length,
+    uint8_t *tag,
+    size_t tag_size,
+    size_t *tag_length );
+
+psa_status_t psa_driver_wrapper_aead_verify(
+    psa_aead_operation_t *operation,
+    uint8_t *plaintext,
+    size_t plaintext_size,
+    size_t *plaintext_length,
+    const uint8_t *tag,
+    size_t tag_length );
+
+psa_status_t psa_driver_wrapper_aead_abort(
+    psa_aead_operation_t *operation );
+
 /*
  * MAC functions
  */