Update documentation following BN opaquify

Reviewed-by: Tim Hudson <tjh@openssl.org>

1 files changed, 22 insertions, 14 deletions

diff --git a/doc/crypto/BN_mod_mul_reciprocal.pod b/doc/crypto/BN_mod_mul_reciprocal.pod
index 74a216ddc2..cd4b728f47 100644
--- a/doc/crypto/BN_mod_mul_reciprocal.pod
+++ b/doc/crypto/BN_mod_mul_reciprocal.pod
@@ -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);
@@ -44,18 +43,7 @@ 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
 
@@ -67,6 +55,26 @@ 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)>.
 
+=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_get_error(3)|ERR_get_error(3)>, L<BN_add(3)|BN_add(3)>,
@@ -76,6 +84,6 @@ L<BN_CTX_new(3)|BN_CTX_new(3)>
 
 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.
+arguments were different. BN_RECP_CTX_init was removed in OpenSSL 1.1.0
 
 =cut