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Third Party Openssl
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d18b993c
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Third Party Openssl
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体验新版 GitCode,发现更多精彩内容 >>
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d18b993c
编写于
11月 07, 2003
作者:
U
Ulf Möller
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电子邮件补丁
差异文件
Geoff suggested a more succinct description for "top".
上级
e6e81c58
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doc/crypto/bn_internal.pod
doc/crypto/bn_internal.pod
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doc/crypto/bn_internal.pod
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d18b993c
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@@ -72,19 +72,19 @@ applications.
...
@@ -72,19 +72,19 @@ applications.
typedef struct bignum_st
typedef struct bignum_st
{
{
int top; /*
index of last used d (most significant word) + 1
*/
int top; /*
number of words used in d
*/
BN_ULONG *d; /* pointer to an array
of 'BITS2' bit chunks
*/
BN_ULONG *d; /* pointer to an array
containing the integer value
*/
int max; /* size of the d array */
int max; /* size of the d array */
int neg; /* sign */
int neg; /* sign */
} BIGNUM;
} BIGNUM;
The
big number is stored in B<d>, a malloc()ed array of B<BN_ULONG>s
,
The
integer value is stored in B<d>, a malloc()ed array of words (B<BN_ULONG>)
,
least significant first. A B<BN_ULONG> can be either 16, 32 or 64 bits
least significant
word
first. A B<BN_ULONG> can be either 16, 32 or 64 bits
in size
(B<BITS2>), depending on the 'number of bits'
specified in
in size
, depending on the 'number of bits' (B<BITS2>)
specified in
C<openssl/bn.h>.
C<openssl/bn.h>.
B<max> is the size of the B<d> array that has been allocated. B<top>
B<max> is the size of the B<d> array that has been allocated. B<top>
is the
'last' entry being used plus one
, so for a value of 4, bn.d[0]=4 and
is the
number of words being used
, so for a value of 4, bn.d[0]=4 and
bn.top=1. B<neg> is 1 if the number is negative. When a B<BIGNUM> is
bn.top=1. B<neg> is 1 if the number is negative. When a B<BIGNUM> is
B<0>, the B<d> field can be B<NULL> and B<top> == B<0>.
B<0>, the B<d> field can be B<NULL> and B<top> == B<0>.
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