/*
- * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
static int dh_test(void)
{
+ DH *dh = NULL;
+ BIGNUM *p = NULL, *q = NULL, *g = NULL;
+ const BIGNUM *p2, *q2, *g2;
+ BIGNUM *priv_key = NULL;
+ const BIGNUM *pub_key2, *priv_key2;
BN_GENCB *_cb = NULL;
DH *a = NULL;
DH *b = NULL;
+ DH *c = NULL;
const BIGNUM *ap = NULL, *ag = NULL, *apub_key = NULL;
- const BIGNUM *bpub_key = NULL;
- BIGNUM *bp = NULL, *bg = NULL;
+ const BIGNUM *bpub_key = NULL, *bpriv_key = NULL;
+ BIGNUM *bp = NULL, *bg = NULL, *cpriv_key = NULL;
unsigned char *abuf = NULL;
unsigned char *bbuf = NULL;
- int i, alen, blen, aout, bout;
+ unsigned char *cbuf = NULL;
+ int i, alen, blen, clen, aout, bout, cout;
int ret = 0;
+ if (!TEST_ptr(dh = DH_new())
+ || !TEST_ptr(p = BN_new())
+ || !TEST_ptr(q = BN_new())
+ || !TEST_ptr(g = BN_new())
+ || !TEST_ptr(priv_key = BN_new()))
+ goto err1;
+
+ /*
+ * I) basic tests
+ */
+
+ /* using a small predefined Sophie Germain DH group with generator 3 */
+ if (!TEST_true(BN_set_word(p, 4079L))
+ || !TEST_true(BN_set_word(q, 2039L))
+ || !TEST_true(BN_set_word(g, 3L))
+ || !TEST_true(DH_set0_pqg(dh, p, q, g)))
+ goto err1;
+
+ /* test the combined getter for p, q, and g */
+ DH_get0_pqg(dh, &p2, &q2, &g2);
+ if (!TEST_ptr_eq(p2, p)
+ || !TEST_ptr_eq(q2, q)
+ || !TEST_ptr_eq(g2, g))
+ goto err2;
+
+ /* test the simple getters for p, q, and g */
+ if (!TEST_ptr_eq(DH_get0_p(dh), p2)
+ || !TEST_ptr_eq(DH_get0_q(dh), q2)
+ || !TEST_ptr_eq(DH_get0_g(dh), g2))
+ goto err2;
+
+ /* set the private key only*/
+ if (!TEST_true(BN_set_word(priv_key, 1234L))
+ || !TEST_true(DH_set0_key(dh, NULL, priv_key)))
+ goto err2;
+
+ /* test the combined getter for pub_key and priv_key */
+ DH_get0_key(dh, &pub_key2, &priv_key2);
+ if (!TEST_ptr_eq(pub_key2, NULL)
+ || !TEST_ptr_eq(priv_key2, priv_key))
+ goto err3;
+
+ /* test the simple getters for pub_key and priv_key */
+ if (!TEST_ptr_eq(DH_get0_pub_key(dh), pub_key2)
+ || !TEST_ptr_eq(DH_get0_priv_key(dh), priv_key2))
+ goto err3;
+
+ /* now generate a key pair ... */
+ if (!DH_generate_key(dh))
+ goto err3;
+
+ /* ... and check whether the private key was reused: */
+
+ /* test it with the combined getter for pub_key and priv_key */
+ DH_get0_key(dh, &pub_key2, &priv_key2);
+ if (!TEST_ptr(pub_key2)
+ || !TEST_ptr_eq(priv_key2, priv_key))
+ goto err3;
+
+ /* test it the simple getters for pub_key and priv_key */
+ if (!TEST_ptr_eq(DH_get0_pub_key(dh), pub_key2)
+ || !TEST_ptr_eq(DH_get0_priv_key(dh), priv_key2))
+ goto err3;
+
+ /* check whether the public key was calculated correctly */
+ TEST_uint_eq(BN_get_word(pub_key2), 3331L);
+
+ /*
+ * II) key generation
+ */
+
+ /* generate a DH group ... */
if (!TEST_ptr(_cb = BN_GENCB_new()))
- goto err;
+ goto err3;
BN_GENCB_set(_cb, &cb, NULL);
if (!TEST_ptr(a = DH_new())
|| !TEST_true(DH_generate_parameters_ex(a, 64,
DH_GENERATOR_5, _cb)))
- goto err;
+ goto err3;
+ /* ... and check whether it is valid */
if (!DH_check(a, &i))
- goto err;
+ goto err3;
if (!TEST_false(i & DH_CHECK_P_NOT_PRIME)
|| !TEST_false(i & DH_CHECK_P_NOT_SAFE_PRIME)
|| !TEST_false(i & DH_UNABLE_TO_CHECK_GENERATOR)
|| !TEST_false(i & DH_NOT_SUITABLE_GENERATOR))
- goto err;
+ goto err3;
DH_get0_pqg(a, &ap, NULL, &ag);
+ /* now create another copy of the DH group for the peer */
if (!TEST_ptr(b = DH_new()))
- goto err;
+ goto err3;
if (!TEST_ptr(bp = BN_dup(ap))
|| !TEST_ptr(bg = BN_dup(ag))
|| !TEST_true(DH_set0_pqg(b, bp, NULL, bg)))
- goto err;
+ goto err3;
bp = bg = NULL;
+ /*
+ * III) simulate a key exchange
+ */
+
if (!DH_generate_key(a))
- goto err;
+ goto err3;
DH_get0_key(a, &apub_key, NULL);
if (!DH_generate_key(b))
- goto err;
- DH_get0_key(b, &bpub_key, NULL);
+ goto err3;
+ DH_get0_key(b, &bpub_key, &bpriv_key);
+
+ /* Also test with a private-key-only copy of |b|. */
+ if (!TEST_ptr(c = DHparams_dup(b))
+ || !TEST_ptr(cpriv_key = BN_dup(bpriv_key))
+ || !TEST_true(DH_set0_key(c, NULL, cpriv_key)))
+ goto err3;
+ cpriv_key = NULL;
alen = DH_size(a);
if (!TEST_ptr(abuf = OPENSSL_malloc(alen))
|| !TEST_true((aout = DH_compute_key(abuf, bpub_key, a)) != -1))
- goto err;
+ goto err3;
blen = DH_size(b);
if (!TEST_ptr(bbuf = OPENSSL_malloc(blen))
|| !TEST_true((bout = DH_compute_key(bbuf, apub_key, b)) != -1))
- goto err;
+ goto err3;
+
+ clen = DH_size(c);
+ if (!TEST_ptr(cbuf = OPENSSL_malloc(clen))
+ || !TEST_true((cout = DH_compute_key(cbuf, apub_key, c)) != -1))
+ goto err3;
if (!TEST_true(aout >= 4)
- || !TEST_mem_eq(abuf, aout, bbuf, bout))
- goto err;
+ || !TEST_mem_eq(abuf, aout, bbuf, bout)
+ || !TEST_mem_eq(abuf, aout, cbuf, cout))
+ goto err3;
ret = 1;
-
- err:
+ goto success;
+
+ err1:
+ /* an error occurred before p,q,g were assigned to dh */
+ BN_free(p);
+ BN_free(q);
+ BN_free(g);
+ err2:
+ /* an error occured before priv_key was assigned to dh */
+ BN_free(priv_key);
+ err3:
+ success:
OPENSSL_free(abuf);
OPENSSL_free(bbuf);
+ OPENSSL_free(cbuf);
DH_free(b);
DH_free(a);
+ DH_free(c);
BN_free(bp);
BN_free(bg);
+ BN_free(cpriv_key);
BN_GENCB_free(_cb);
+ DH_free(dh);
+
return ret;
}
projects / openssl.git / blobdiff