Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

bn_ctx_new(3ssl) [minix man page]

BN_CTX_new(3SSL)						      OpenSSL							  BN_CTX_new(3SSL)

NAME
BN_CTX_new, BN_CTX_init, BN_CTX_free - allocate and free BN_CTX structures SYNOPSIS
#include <openssl/bn.h> BN_CTX *BN_CTX_new(void); void BN_CTX_init(BN_CTX *c); void BN_CTX_free(BN_CTX *c); DESCRIPTION
A BN_CTX is a structure that holds BIGNUM temporary variables used by library functions. Since dynamic memory allocation to create BIGNUMs is rather expensive when used in conjunction with repeated subroutine calls, the BN_CTX structure is used. BN_CTX_new() allocates and initializes a BN_CTX structure. BN_CTX_init() initializes an existing uninitialized BN_CTX. BN_CTX_free() frees the components of the BN_CTX, and if it was created by BN_CTX_new(), also the structure itself. If BN_CTX_start(3) has been used on the BN_CTX, BN_CTX_end(3) must be called before the BN_CTX may be freed by BN_CTX_free(). RETURN VALUES
BN_CTX_new() returns a pointer to the BN_CTX. If the allocation fails, it returns NULL and sets an error code that can be obtained by ERR_get_error(3). BN_CTX_init() and BN_CTX_free() have no return values. SEE ALSO
bn(3), ERR_get_error(3), BN_add(3), BN_CTX_start(3) HISTORY
BN_CTX_new() and BN_CTX_free() are available in all versions on SSLeay and OpenSSL. BN_CTX_init() was added in SSLeay 0.9.1b. 1.0.1e 2013-02-11 BN_CTX_new(3SSL)

Check Out this Related Man Page

BN_CTX_new(3SSL)						      OpenSSL							  BN_CTX_new(3SSL)

NAME
BN_CTX_new, BN_CTX_init, BN_CTX_free - allocate and free BN_CTX structures SYNOPSIS
#include <openssl/bn.h> BN_CTX *BN_CTX_new(void); void BN_CTX_init(BN_CTX *c); void BN_CTX_free(BN_CTX *c); DESCRIPTION
A BN_CTX is a structure that holds BIGNUM temporary variables used by library functions. Since dynamic memory allocation to create BIGNUMs is rather expensive when used in conjunction with repeated subroutine calls, the BN_CTX structure is used. BN_CTX_new() allocates and initializes a BN_CTX structure. BN_CTX_init() initializes an existing uninitialized BN_CTX. BN_CTX_free() frees the components of the BN_CTX, and if it was created by BN_CTX_new(), also the structure itself. If BN_CTX_start(3) has been used on the BN_CTX, BN_CTX_end(3) must be called before the BN_CTX may be freed by BN_CTX_free(). RETURN VALUES
BN_CTX_new() returns a pointer to the BN_CTX. If the allocation fails, it returns NULL and sets an error code that can be obtained by ERR_get_error(3). BN_CTX_init() and BN_CTX_free() have no return values. SEE ALSO
bn(3), ERR_get_error(3), BN_add(3), BN_CTX_start(3) HISTORY
BN_CTX_new() and BN_CTX_free() are available in all versions on SSLeay and OpenSSL. BN_CTX_init() was added in SSLeay 0.9.1b. 1.0.1e 2013-02-11 BN_CTX_new(3SSL)
Man Page

9 More Discussions You Might Find Interesting

1. Programming

help with write-read locks inter-process

I need help!Many Thanks! Now,I try to manage the shared memory inter-process . Inevitably,I have to deal with the synchronous. I know the pthread_rwlock in posix,and I compile ,then run successfully in Red Hat Enterprise 4. I have a doubt about whether the Posix supports the system such as... (1 Reply)
Discussion started by: weizh
1 Replies

2. Programming

Trying to understand kernel

Hi all, I'm a user and a programmer of UNIX based systems (mainly FreeBSD and Linux). I have never programmed or tried to fully understand the kernel layer. I haven't a special propouse for learning it, but I'd like to. Can anyone suggest me books, documentation or examples that may help me... (2 Replies)
Discussion started by: mghis
2 Replies

3. Programming

Learning OS design, Linux Vs. Minix???

Hi friends, I hope everybody is fine. I have been studing operating system concepts at college, and I find this subject very interesting. I've decided that I must go into this field no matter what, hopefully someday I would design my own operating system. I have two choices infront of me, studying... (9 Replies)
Discussion started by: gabam
9 Replies

4. Android

Basic Android platform information.

I am thinking of developing an app' for Android mobile devices... Two questions here:- 1) Does anyone _develop_ for the Android _mobile_ platform? If so do you use OSX 10.7.5 or greater as your _development_platform_? 2) I know ********* is gonna say that the Android terminal/shell is... (13 Replies)
Discussion started by: wisecracker
13 Replies

5. Fedora

Is UNIX an open source OS ?

Hi everyone, I know the following questions are noobish questions but I am asking them because I am confused about the basics of history behind UNIX and LINUX. Ok onto business, my questions are-: Was/Is UNIX ever an open source operating system ? If UNIX was... (21 Replies)
Discussion started by: sreyan32
21 Replies

6. SCO

Study UNIX Kernel

Hi all, I hope you are fine, I'd like study Os I tried a book like Silberschatz it's a good book but like other books it talks about the concepts abstractly and that's due to it try to encompass many concepts from many operating systems in GENERAL. i am not too much comfortable from these... (20 Replies)
Discussion started by: Abdo_8008
20 Replies

7. UNIX for Dummies Questions & Answers

New to Unix

I'm new on the site and do not write very well in English, I am now using osx platform and was attracted to her. For several searches on random websites for Unix content yours was the best and most interesting, I registered and already visualized some very interesting content. But I wonder where... (3 Replies)
Discussion started by: mmmrugby
3 Replies

8. What is on Your Mind?

Just getting started with UNIX programming and administration

Hi everyone, I am new to this forum and this is my very first post, one i think i will look back at many years from now and have nothing to regret about. This is simply because i recently installed Linux (Ubuntu) on my system and downloaded a book titled, The Unix Programming Environment. I... (7 Replies)
Discussion started by: despiragado
7 Replies

9. UNIX for Advanced & Expert Users

Shopt -s histappend

What is the point of this? Whenever I close my shell it appends to the history file without adding this. I have never seen it overwrite my history file. # When the shell exits, append to the history file instead of overwriting it shopt -s histappend (3 Replies)
Discussion started by: cokedude
3 Replies