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BN_free (3)
  • >> BN_free (3) ( Разные man: Библиотечные вызовы )
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    NAME

    BN_new, BN_init, BN_clear, BN_free, BN_clear_free - allocate and free BIGNUMs
     
    

    SYNOPSIS

     #include <openssl/bn.h>
    
    

     BIGNUM *BN_new(void);
    
    

     void BN_init(BIGNUM *);
    
    

     void BN_clear(BIGNUM *a);
    
    

     void BN_free(BIGNUM *a);
    
    

     void BN_clear_free(BIGNUM *a);
    
    
     

    DESCRIPTION

    BN_new() allocates and initializes a BIGNUM structure. BN_init() initializes an existing uninitialized BIGNUM.

    BN_clear() is used to destroy sensitive data such as keys when they are no longer needed. It erases the memory used by a and sets it to the value 0.

    BN_free() frees the components of the BIGNUM, and if it was created by BN_new(), also the structure itself. BN_clear_free() additionally overwrites the data before the memory is returned to the system.  

    RETURN VALUES

    BN_new() returns a pointer to the BIGNUM. If the allocation fails, it returns NULL and sets an error code that can be obtained by ERR_get_error(3).

    BN_init(), BN_clear(), BN_free() and BN_clear_free() have no return values.  

    SEE ALSO

    bn(3), ERR_get_error(3)  

    HISTORY

    BN_new(), BN_clear(), BN_free() and BN_clear_free() are available in all versions on SSLeay and OpenSSL. BN_init() was added in SSLeay 0.9.1b.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    SEE ALSO
    HISTORY


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