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-rw-r--r--test/openssl/test_pkey_dh.rb13
1 files changed, 13 insertions, 0 deletions
diff --git a/test/openssl/test_pkey_dh.rb b/test/openssl/test_pkey_dh.rb
index 4a05626a..9efc3ba6 100644
--- a/test/openssl/test_pkey_dh.rb
+++ b/test/openssl/test_pkey_dh.rb
@@ -18,6 +18,19 @@ class OpenSSL::TestPKeyDH < OpenSSL::PKeyTestCase
end
end
+ def test_derive_key
+ dh1 = Fixtures.pkey("dh1024").generate_key!
+ dh2 = Fixtures.pkey("dh1024").generate_key!
+ dh1_pub = OpenSSL::PKey.read(dh1.public_to_der)
+ dh2_pub = OpenSSL::PKey.read(dh2.public_to_der)
+ z = dh1.g.mod_exp(dh1.priv_key, dh1.p).mod_exp(dh2.priv_key, dh1.p).to_s(2)
+ assert_equal z, dh1.derive(dh2_pub)
+ assert_equal z, dh2.derive(dh1_pub)
+
+ assert_equal z, dh1.compute_key(dh2.pub_key)
+ assert_equal z, dh2.compute_key(dh1.pub_key)
+ end
+
def test_DHparams
dh1024 = Fixtures.pkey("dh1024")
asn1 = OpenSSL::ASN1::Sequence([