X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fdh%2Fdh_key.c;h=6c7a45726706de542aa6117a0011b82e9b8f798c;hp=bba83be312cf4fe3bd27387c94737593308927c0;hb=bc91494e064ebdcff68f987947f97e404fbca0b5;hpb=a1e7883edb9041aff44700fc9817891c800ac703

diff --git a/crypto/dh/dh_key.c b/crypto/dh/dh_key.c
index bba83be312..6c7a457267 100644
--- a/crypto/dh/dh_key.c
+++ b/crypto/dh/dh_key.c
@@ -86,6 +86,21 @@ int DH_compute_key(unsigned char *key, const BIGNUM *pub_key, DH *dh)
 	return dh->meth->compute_key(key, pub_key, dh);
 	}
 
+int DH_compute_key_padded(unsigned char *key, const BIGNUM *pub_key, DH *dh)
+	{
+	int rv, pad;
+	rv = dh->meth->compute_key(key, pub_key, dh);
+	if (rv <= 0)
+		return rv;
+	pad = BN_num_bytes(dh->p) - rv;
+	if (pad > 0)
+		{
+		memmove(key + pad, key, rv);
+		memset(key, 0, pad);
+		}
+	return rv + pad;
+	}
+
 static DH_METHOD dh_ossl = {
 "OpenSSL DH Method",
 generate_key,