test/Makefile: allow emulated test (e.g. under wine).

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

diff --git a/doc/crypto/BIO_f_md.pod b/doc/crypto/BIO_f_md.pod
index ebca9440654bc20c2e191417c8d108cf6890bc7b..2cc41f89d2fda1624b927844356ea31057189ffe 100644 (file)
--- a/doc/crypto/BIO_f_md.pod
+++ b/doc/crypto/BIO_f_md.pod
@@ -28,7 +28,7 @@ BIO_gets(), if its B<size> parameter is large enough finishes the
 digest calculation and returns the digest value. BIO_puts() is
 not supported.
 
-BIO_reset() reinitializes a digest BIO.
+BIO_reset() reinitialises a digest BIO.
 
 BIO_set_md() sets the message digest of BIO B<b> to B<md>: this
 must be called to initialize a digest BIO before any data is
@@ -58,6 +58,12 @@ If an application needs to call BIO_gets() or BIO_puts() through
 a chain containing digest BIOs then this can be done by prepending
 a buffering BIO.
 
+Before OpenSSL 1.0.0 the call to BIO_get_md_ctx() would only work if the BIO
+had been initialized for example by calling BIO_set_md() ). In OpenSSL
+1.0.0 and later the context is always returned and the BIO is state is set
+to initialized. This allows applications to initialize the context externally
+if the standard calls such as BIO_set_md() are not sufficiently flexible.
+
 =head1 RETURN VALUES
 
 BIO_f_md() returns the digest BIO method.
@@ -127,7 +133,7 @@ outputs them. This could be used with the examples above.
 
 =head1 BUGS
 
-The lack of support for BIO_puts() and the non standard behavior of
+The lack of support for BIO_puts() and the non standard behaviour of
 BIO_gets() could be regarded as anomalous. It could be argued that BIO_gets()
 and BIO_puts() should be passed to the next BIO in the chain and digest
 the data passed through and that digests should be retrieved using a