trace: add PROVIDER_CONF trace category

[openssl.git] / doc / man3 / BIO_f_md.pod

diff --git a/doc/man3/BIO_f_md.pod b/doc/man3/BIO_f_md.pod
index d7ad04d9d0c751df8eb7def56038fe72b3464514..cd45730ac5568b4ba8ffdec5138cfdbaa7a67786 100644 (file)
--- a/doc/man3/BIO_f_md.pod
+++ b/doc/man3/BIO_f_md.pod
@@ -4,10 +4,10 @@
 
 BIO_f_md, BIO_set_md, BIO_get_md, BIO_get_md_ctx - message digest BIO filter
 
-=for comment multiple includes
-
 =head1 SYNOPSIS
 
+=for comment multiple includes
+
  #include <openssl/bio.h>
  #include <openssl/evp.h>
 
@@ -79,10 +79,12 @@ checking has been omitted for clarity.
 
  BIO *bio, *mdtmp;
  char message[] = "Hello World";
+
  bio = BIO_new(BIO_s_null());
  mdtmp = BIO_new(BIO_f_md());
  BIO_set_md(mdtmp, EVP_sha1());
- /* For BIO_push() we want to append the sink BIO and keep a note of
+ /*
+  * For BIO_push() we want to append the sink BIO and keep a note of
   * the start of the chain.
   */
  bio = BIO_push(mdtmp, bio);
@@ -97,6 +99,7 @@ The next example digests data by reading through a chain instead:
  BIO *bio, *mdtmp;
  char buf[1024];
  int rdlen;
+
  bio = BIO_new_file(file, "rb");
  mdtmp = BIO_new(BIO_f_md());
  BIO_set_md(mdtmp, EVP_sha1());
@@ -105,8 +108,8 @@ The next example digests data by reading through a chain instead:
  BIO_set_md(mdtmp, EVP_md5());
  bio = BIO_push(mdtmp, bio);
  do {
-        rdlen = BIO_read(bio, buf, sizeof(buf));
-        /* Might want to do something with the data here */
+     rdlen = BIO_read(bio, buf, sizeof(buf));
+     /* Might want to do something with the data here */
  } while (rdlen > 0);
 
 This next example retrieves the message digests from a BIO chain and
@@ -116,17 +119,20 @@ outputs them. This could be used with the examples above.
  unsigned char mdbuf[EVP_MAX_MD_SIZE];
  int mdlen;
  int i;
+
  mdtmp = bio;   /* Assume bio has previously been set up */
  do {
-        EVP_MD *md;
-        mdtmp = BIO_find_type(mdtmp, BIO_TYPE_MD);
-        if (!mdtmp) break;
-        BIO_get_md(mdtmp, &md);
-        printf("%s digest", OBJ_nid2sn(EVP_MD_type(md)));
-        mdlen = BIO_gets(mdtmp, mdbuf, EVP_MAX_MD_SIZE);
-        for (i = 0; i < mdlen; i++) printf(":%02X", mdbuf[i]);
-        printf("\n");
-        mdtmp = BIO_next(mdtmp);
+     EVP_MD *md;
+
+     mdtmp = BIO_find_type(mdtmp, BIO_TYPE_MD);
+     if (!mdtmp)
+         break;
+     BIO_get_md(mdtmp, &md);
+     printf("%s digest", OBJ_nid2sn(EVP_MD_type(md)));
+     mdlen = BIO_gets(mdtmp, mdbuf, EVP_MAX_MD_SIZE);
+     for (i = 0; i < mdlen; i++) printf(":%02X", mdbuf[i]);
+     printf("\n");
+     mdtmp = BIO_next(mdtmp);
  } while (mdtmp);
 
  BIO_free_all(bio);
@@ -148,7 +154,7 @@ BIO was initialized first.
 
 Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
 
-Licensed under the OpenSSL license (the "License").  You may not use
+Licensed under the Apache License 2.0 (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
 L<https://www.openssl.org/source/license.html>.