Fix mismatch of function prototype and document

[openssl.git] / demos / evp / aesgcm.c

diff --git a/demos/evp/aesgcm.c b/demos/evp/aesgcm.c
index 9159c5c00f7a388ed4ca44575f7516f2b2aba5db..46d9a5639bc0dad93171a0738c91ffd021db1bfe 100644 (file)
--- a/demos/evp/aesgcm.c
+++ b/demos/evp/aesgcm.c
@@ -1,3 +1,12 @@
+/*
+ * Copyright 2012-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
 /*
  * Simple AES GCM test program, uses the same NIST data used for the FIPS
  * self test but uses the application level EVP APIs.
@@ -85,13 +94,6 @@ void aes_gcm_decrypt(void)
     EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, sizeof(gcm_iv), NULL);
     /* Specify key and IV */
     EVP_DecryptInit_ex(ctx, NULL, NULL, gcm_key, gcm_iv);
-#if 0
-    /*
-     * Set expected tag value. A restriction in OpenSSL 1.0.1c and earlier
-     * required the tag before any AAD or ciphertext
-     */
-    EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, sizeof(gcm_tag), gcm_tag);
-#endif
     /* Zero or more calls to specify any AAD */
     EVP_DecryptUpdate(ctx, NULL, &outlen, gcm_aad, sizeof(gcm_aad));
     /* Decrypt plaintext */
@@ -99,11 +101,9 @@ void aes_gcm_decrypt(void)
     /* Output decrypted block */
     printf("Plaintext:\n");
     BIO_dump_fp(stdout, outbuf, outlen);
-    /*
-     * Set expected tag value. Works in OpenSSL 1.0.1d and later
-     * In versions prior to OpenSSL 1.1.0 you should use EVP_CTRL_GCM_SET_TAG
-     */
-    EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, sizeof(gcm_tag), gcm_tag);
+    /* Set expected tag value. */
+    EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, sizeof(gcm_tag),
+                        (void *)gcm_tag);
     /* Finalise: note get no output for GCM */
     rv = EVP_DecryptFinal_ex(ctx, outbuf, &outlen);
     /*