Add support for md4WithRSAEncryption.

apps/req.c

diff --git a/apps/req.c b/apps/req.c
index 6fac16f..9611431 100644
--- a/apps/req.c
+++ b/apps/req.c
@@ -420,7 +420,7 @@
 		BIO_printf(bio_err,"                the random number generator\n");
 		BIO_printf(bio_err," -newkey rsa:bits generate a new RSA key of 'bits' in size\n");
 		BIO_printf(bio_err," -newkey dsa:file generate a new DSA key, parameters taken from CA in 'file'\n");
-		BIO_printf(bio_err," -[digest]      Digest to sign with (md5, sha1, md2, mdc2)\n");
+		BIO_printf(bio_err," -[digest]      Digest to sign with (md5, sha1, md2, mdc2, md4)\n");
 		BIO_printf(bio_err," -config file   request template file.\n");
 		BIO_printf(bio_err," -subj arg      set or modify request subject\n");
 		BIO_printf(bio_err," -new           new request.\n");

crypto/evp/m_md4.c

diff --git a/crypto/evp/m_md4.c b/crypto/evp/m_md4.c
index 8565e5d..e19b663 100644
--- a/crypto/evp/m_md4.c
+++ b/crypto/evp/m_md4.c
@@ -76,7 +76,7 @@
 static const EVP_MD md4_md=
 	{
 	NID_md4,
-	0,
+	NID_md4WithRSAEncryption,
 	MD4_DIGEST_LENGTH,
 	0,
 	init,

crypto/objects/objects.txt

diff --git a/crypto/objects/objects.txt b/crypto/objects/objects.txt
index d0a4dc4..fa520bd 100644
--- a/crypto/objects/objects.txt
+++ b/crypto/objects/objects.txt
@@ -60,6 +60,7 @@
 pkcs 1			: pkcs1
 pkcs1 1			:			: rsaEncryption
 pkcs1 2			: RSA-MD2		: md2WithRSAEncryption
+pkcs1 3			: RSA-MD4		: md4WithRSAEncryption
 pkcs1 4			: RSA-MD5		: md5WithRSAEncryption
 pkcs1 5			: RSA-SHA1		: sha1WithRSAEncryption