X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=doc%2Fcrypto%2FBN_mod_mul_reciprocal.pod;h=f03feb2d9635574c4358edfb14133f317afd82cc;hp=42a3c0db7e28f878de1dab57d7ea18c03cd01a65;hb=a528d4f0a9a71405f3ca06e20cbd27aa1b8c0df9;hpb=cae55bfc68bed0a2d562891f11a75bf2145eb81e

diff --git a/doc/crypto/BN_mod_mul_reciprocal.pod b/doc/crypto/BN_mod_mul_reciprocal.pod
index 42a3c0db7e..f03feb2d96 100644
--- a/doc/crypto/BN_mod_mul_reciprocal.pod
+++ b/doc/crypto/BN_mod_mul_reciprocal.pod
@@ -2,8 +2,8 @@
 
 =head1 NAME
 
-BN_mod_mul_reciprocal, BN_RECP_CTX_new, BN_RECP_CTX_init,
-BN_RECP_CTX_free, BN_RECP_CTX_set - Modular multiplication using
+BN_mod_mul_reciprocal,  BN_div_recp, BN_RECP_CTX_new, BN_RECP_CTX_init,
+BN_RECP_CTX_free, BN_RECP_CTX_set - modular multiplication using
 reciprocal
 
 =head1 SYNOPSIS
@@ -11,7 +11,6 @@ reciprocal
  #include <openssl/bn.h>
 
  BN_RECP_CTX *BN_RECP_CTX_new(void);
- void BN_RECP_CTX_init(BN_RECP_CTX *recp);
  void BN_RECP_CTX_free(BN_RECP_CTX *recp);
 
  int BN_RECP_CTX_set(BN_RECP_CTX *recp, const BIGNUM *m, BN_CTX *ctx);
@@ -25,7 +24,7 @@ reciprocal
 =head1 DESCRIPTION
 
 BN_mod_mul_reciprocal() can be used to perform an efficient
-L<BN_mod_mul(3)|BN_mod_mul(3)> operation when the operation will be performed
+L<BN_mod_mul(3)> operation when the operation will be performed
 repeatedly with the same modulus. It computes B<r>=(B<a>*B<b>)%B<m>
 using B<recp>=1/B<m>, which is set as described below.  B<ctx> is a
 previously allocated B<BN_CTX> used for temporary variables.
@@ -35,6 +34,7 @@ BN_RECP_CTX_init() initializes an existing uninitialized B<BN_RECP>.
 
 BN_RECP_CTX_free() frees the components of the B<BN_RECP>, and, if it
 was created by BN_RECP_CTX_new(), also the structure itself.
+If B<recp> is NULL, nothing is done.
 
 BN_RECP_CTX_set() stores B<m> in B<recp> and sets it up for computing
 1/B<m> and shifting it left by BN_num_bits(B<m>)+1 to make it an
@@ -44,18 +44,7 @@ later be stored in B<recp>.
 BN_div_recp() divides B<a> by B<m> using B<recp>. It places the quotient
 in B<dv> and the remainder in B<rem>.
 
-The B<BN_RECP_CTX> structure is defined as follows:
-
- typedef struct bn_recp_ctx_st
-	{
-	BIGNUM N;	/* the divisor */
-	BIGNUM Nr;	/* the reciprocal */
-	int num_bits;
-	int shift;
-	int flags;
-	} BN_RECP_CTX;
-
-It cannot be shared between threads.
+The B<BN_RECP_CTX> structure cannot be shared between threads.
 
 =head1 RETURN VALUES
 
@@ -65,17 +54,35 @@ on error.
 BN_RECP_CTX_init() and BN_RECP_CTX_free() have no return values.
 
 For the other functions, 1 is returned for success, 0 on error.
-The error codes can be obtained by L<ERR_get_error(3)|ERR_get_error(3)>.
+The error codes can be obtained by L<ERR_get_error(3)>.
+
+=head1 REMOVED FUNCTIONALITY
+
+ void BN_RECP_CTX_init(BN_RECP_CTX *recp);
+
+BN_RECP_CTX_init() is no longer available as of OpenSSL 1.1.0. It was used to
+initialize an existing uninitialized B<BN_RECP_CTX>. Typically this would be
+done as follows:
+
+ BN_RECP_CTX ctx;
+ BN_RECP_CTX_init(&ctx);
+
+Applications should replace use of BN_RECP_CTX_init with BN_RECP_CTX_new
+instead:
+
+ BN_RECP_CTX *ctx;
+ ctx = BN_RECP_CTX_new();
+ if(!ctx) /* Handle error */
+ ...
+ BN_RECP_CTX_free(ctx);
 
 =head1 SEE ALSO
 
-L<bn(3)|bn(3)>, L<err(3)|err(3)>, L<BN_add(3)|BN_add(3)>,
-L<BN_CTX_new(3)|BN_CTX_new(3)>
+L<bn(3)>, L<ERR_get_error(3)>, L<BN_add(3)>,
+L<BN_CTX_new(3)>
 
 =head1 HISTORY
 
-B<BN_RECP_CTX> was added in SSLeay 0.9.0. Before that, the function
-BN_reciprocal() was used instead, and the BN_mod_mul_reciprocal()
-arguments were different.
+BN_RECP_CTX_init was removed in OpenSSL 1.1.0
 
 =cut