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authorDr. Stephen Henson <steve@openssl.org>2009-07-24 13:02:55 +0000
committerDr. Stephen Henson <steve@openssl.org>2009-07-24 13:02:55 +0000
commitf1ad8fb627f4ab0c02fb71e17ec449e62a932aab (patch)
treed7c7252ba174c62230e0c138e22f394a15c38b26 /doc
parentd7406b1528ab639349ea13dece383799972deb71 (diff)
downloadopenssl-new-f1ad8fb627f4ab0c02fb71e17ec449e62a932aab.tar.gz
Doc update from HEAD.
Diffstat (limited to 'doc')
-rw-r--r--doc/crypto/EVP_DigestInit.pod17
1 files changed, 10 insertions, 7 deletions
diff --git a/doc/crypto/EVP_DigestInit.pod b/doc/crypto/EVP_DigestInit.pod
index 130cd7f60a..d83363bb80 100644
--- a/doc/crypto/EVP_DigestInit.pod
+++ b/doc/crypto/EVP_DigestInit.pod
@@ -132,7 +132,9 @@ return B<EVP_MD> structures for the MD2, MD5, SHA, SHA1, MDC2 and RIPEMD160 dige
algorithms respectively. The associated signature algorithm is RSA in each case.
EVP_dss() and EVP_dss1() return B<EVP_MD> structures for SHA and SHA1 digest
-algorithms but using DSS (DSA) for the signature algorithm.
+algorithms but using DSS (DSA) for the signature algorithm. Note: there is
+no need to use these pseudo-digests in OpenSSL 1.0.0 and later, they are
+however retained for compatibility.
EVP_md_null() is a "null" message digest that does nothing: i.e. the hash it
returns is of zero length.
@@ -228,12 +230,6 @@ digest name passed on the command line.
printf("\n");
}
-=head1 BUGS
-
-The link between digests and signing algorithms results in a situation where
-EVP_sha1() must be used with RSA and EVP_dss1() must be used with DSS
-even though they are identical digests.
-
=head1 SEE ALSO
L<evp(3)|evp(3)>, L<hmac(3)|hmac(3)>, L<md2(3)|md2(3)>,
@@ -253,4 +249,11 @@ EVP_md_null(), EVP_md2(), EVP_md5(), EVP_sha(), EVP_sha1(),
EVP_dss(), EVP_dss1(), EVP_mdc2() and EVP_ripemd160() were
changed to return truely const EVP_MD * in OpenSSL 0.9.7.
+The link between digests and signing algorithms was fixed in OpenSSL 1.0 and
+later, so now EVP_sha1() can be used with RSA and DSA, there is no need to
+use EVP_dss1() any more.
+
+OpenSSL 1.0 and later does not include the MD2 digest algorithm in the
+default configuration due to its security weaknesses.
+
=cut