clarify.

[openssl.git] / doc / crypto / DH_set_method.pod

diff --git a/doc/crypto/DH_set_method.pod b/doc/crypto/DH_set_method.pod
index dca41d8..a8f75bd 100644 (file)
--- a/doc/crypto/DH_set_method.pod
+++ b/doc/crypto/DH_set_method.pod
@@ -56,7 +56,7 @@ the default method is used.
      /* compute shared secret */
         int (*compute_key)(unsigned char *key, BIGNUM *pub_key, DH *dh);
 
-     /* compute r = a ^ p mod m. May be NULL */
+     /* compute r = a ^ p mod m (May be NULL for some implementations) */
         int (*bn_mod_exp)(DH *dh, BIGNUM *r, BIGNUM *a, const BIGNUM *p,
                                 const BIGNUM *m, BN_CTX *ctx,
                                 BN_MONT_CTX *m_ctx);