mirrors/openssl
0
0
Fork 0
mirror of https://github.com/openssl/openssl.git synced 2025-01-21 09:23:33 +08:00
Code Issues Packages Projects Releases Wiki Activity

Indent some of the code examples.

Browse Source
This commit is contained in:
Dr. Stephen Henson 2004-03-02 13:39:23 +00:00
parent f82bb9cb9c
commit ec7c9ee8b8
1 changed files with 11 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
FAQ
View File

@ -646,26 +646,26 @@ built OpenSSL with /MD your application must use /MD and cannot use /MDd.
* How do I read or write a DER encoded buffer using the ASN1 functions?
You have two options. You can either use a memory BIO in conjunction
with the i2d_XXX_bio() or d2i_XXX_bio() functions or you can use the
i2d_XXX(), d2i_XXX() functions directly. Since these are often the
with the i2d_*_bio() or d2i_*_bio() functions or you can use the
i2d_*(), d2i_*() functions directly. Since these are often the
cause of grief here are some code fragments using PKCS7 as an example:
unsigned char *buf, *p;
int len;
unsigned char *buf, *p;
int len;
len = i2d_PKCS7(p7, NULL);
buf = OPENSSL_malloc(len); /* or Malloc, error checking omitted */
p = buf;
i2d_PKCS7(p7, &p);
len = i2d_PKCS7(p7, NULL);
buf = OPENSSL_malloc(len); /* or Malloc, error checking omitted */
p = buf;
i2d_PKCS7(p7, &p);
At this point buf contains the len bytes of the DER encoding of
p7.
The opposite assumes we already have len bytes in buf:
unsigned char *p;
p = buf;
p7 = d2i_PKCS7(NULL, &p, len);
unsigned char *p;
p = buf;
p7 = d2i_PKCS7(NULL, &p, len);
At this point p7 contains a valid PKCS7 structure of NULL if an error
occurred. If an error occurred ERR_print_errors(bio) should give more