abc/GmSSL
1
0
Fork 0
mirror of https://github.com/guanzhi/GmSSL.git synced 2026-08-11 16:33:40 +08:00
Code Issues Packages Projects Releases Wiki Activity

Merge remote-tracking branch 'origin/master'

Browse Source 
# Conflicts:
#	README.md
This commit is contained in:
Zhi Guan
2017-02-14 16:12:29 +08:00
parent d2254170b8
commit 43fed1108d
3503 changed files with 320546 additions and 408546 deletions
Download Patch File Download Diff File Expand all files Collapse all files

56
doc/crypto/BIO_f_md.pod
View File

@@ -4,15 +4,17 @@
BIO_f_md, BIO_set_md, BIO_get_md, BIO_get_md_ctx - message digest BIO filter
=for comment multiple includes
=head1 SYNOPSIS
#include <openssl/bio.h>
#include <openssl/evp.h>
BIO_METHOD * BIO_f_md(void);
int BIO_set_md(BIO *b,EVP_MD *md);
int BIO_get_md(BIO *b,EVP_MD **mdp);
int BIO_get_md_ctx(BIO *b,EVP_MD_CTX **mdcp);
const BIO_METHOD *BIO_f_md(void);
int BIO_set_md(BIO *b, EVP_MD *md);
int BIO_get_md(BIO *b, EVP_MD **mdp);
int BIO_get_md_ctx(BIO *b, EVP_MD_CTX **mdcp);
=head1 DESCRIPTION
@@ -58,10 +60,8 @@ If an application needs to call BIO_gets() or BIO_puts() through
a chain containing digest BIOs then this can be done by prepending
a buffering BIO.
Before OpenSSL 1.0.0 the call to BIO_get_md_ctx() would only work if the BIO
had been initialized for example by calling BIO_set_md() ). In OpenSSL
1.0.0 and later the context is always returned and the BIO is state is set
to initialized. This allows applications to initialize the context externally
Calling BIO_get_md_ctx() will return the context and initialize the BIO
state. This allows applications to initialize the context externally
if the standard calls such as BIO_set_md() are not sufficiently flexible.
=head1 RETURN VALUES
@@ -105,9 +105,9 @@ 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));
rdlen = BIO_read(bio, buf, sizeof(buf));
/* Might want to do something with the data here */
} while(rdlen > 0);
} while (rdlen > 0);
This next example retrieves the message digests from a BIO chain and
outputs them. This could be used with the examples above.
@@ -116,18 +116,18 @@ 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 */
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);
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);
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);
@@ -139,6 +139,18 @@ and BIO_puts() should be passed to the next BIO in the chain and digest
the data passed through and that digests should be retrieved using a
separate BIO_ctrl() call.
=head1 SEE ALSO
=head1 HISTORY
TBA
Before OpenSSL 1.0.0., the call to BIO_get_md_ctx() would only work if the
BIO was initialized first.
=head1 COPYRIGHT
Copyright 2000-2016 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
L<https://www.openssl.org/source/license.html>.
=cut