[7u80] Request for approval for CR 4963723: Implement SHA-224

[Andrew Hughes]

This is the first of three backports to 7u designed to retain SSL
compatibility with servers implemented in other languages switching
to larger key sizes (notably DH >=2048 in Apache 2.4.7 [0]).

This patch is a per-requisite of the patch which brings NSA Suite B
support to 7. It applies largely unchanged, bar the following:

* Copyright header adjustment
* Removal of change to java.security.spec.MGF1ParameterSpec to avoid
introducing a new public variable. The SHA-224 variant is constructed
directly in com.sun.crypto.provider.OAEPParameters instead.
* A change to OAEPParameters is dropped as it was already incorporated
in the backport of 7180907 & 8049480 (addition of SHA-224 to
convertToStandardName)

Bug: https://bugs.openjdk.java.net/browse/JDK-4963723
Webrev: http://cr.openjdk.java.net/~andrew/jdk7u/4963723/webrev.01/

[0] https://httpd.apache.org/docs/2.4/mod/mod_ssl.html

Ok to push?

Thanks,
-- 
Andrew :)

Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)

PGP Key: 248BDC07 (https://keys.indymedia.org/)
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