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author | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
commit | 3562e78743202e43aec8727005182a2558117eca (patch) | |
tree | 8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /openssl/doc/crypto/BN_new.pod | |
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Diffstat (limited to 'openssl/doc/crypto/BN_new.pod')
-rw-r--r-- | openssl/doc/crypto/BN_new.pod | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/openssl/doc/crypto/BN_new.pod b/openssl/doc/crypto/BN_new.pod new file mode 100644 index 000000000..ab7a105e3 --- /dev/null +++ b/openssl/doc/crypto/BN_new.pod @@ -0,0 +1,53 @@ +=pod + +=head1 NAME + +BN_new, BN_init, BN_clear, BN_free, BN_clear_free - allocate and free BIGNUMs + +=head1 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); + +=head1 DESCRIPTION + +BN_new() allocates and initializes a B<BIGNUM> structure. BN_init() +initializes an existing uninitialized B<BIGNUM>. + +BN_clear() is used to destroy sensitive data such as keys when they +are no longer needed. It erases the memory used by B<a> and sets it +to the value 0. + +BN_free() frees the components of the B<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. + +=head1 RETURN VALUES + +BN_new() returns a pointer to the B<BIGNUM>. If the allocation fails, +it returns B<NULL> and sets an error code that can be obtained +by L<ERR_get_error(3)|ERR_get_error(3)>. + +BN_init(), BN_clear(), BN_free() and BN_clear_free() have no return +values. + +=head1 SEE ALSO + +L<bn(3)|bn(3)>, L<ERR_get_error(3)|ERR_get_error(3)> + +=head1 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. + +=cut |