1 files changed, 254 insertions, 0 deletions

diff --git a/src/lib/libcrypto/dh/dh_pmeth.c b/src/lib/libcrypto/dh/dh_pmeth.c
new file mode 100644
index 0000000000..5ae72b7d4c
--- /dev/null
+++ b/src/lib/libcrypto/dh/dh_pmeth.c
@@ -0,0 +1,254 @@
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2006.
+ */
+/* ====================================================================
+ * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/asn1t.h>
+#include <openssl/x509.h>
+#include <openssl/evp.h>
+#include <openssl/dh.h>
+#include <openssl/bn.h>
+#include "evp_locl.h"
+
+/* DH pkey context structure */
+
+typedef struct
+        {
+        /* Parameter gen parameters */
+        int prime_len;
+        int generator;
+        int use_dsa;
+        /* Keygen callback info */
+        int gentmp[2];
+        /* message digest */
+        } DH_PKEY_CTX;
+
+static int pkey_dh_init(EVP_PKEY_CTX *ctx)
+        {
+        DH_PKEY_CTX *dctx;
+        dctx = OPENSSL_malloc(sizeof(DH_PKEY_CTX));
+        if (!dctx)
+                return 0;
+        dctx->prime_len = 1024;
+        dctx->generator = 2;
+        dctx->use_dsa = 0;
+
+        ctx->data = dctx;
+        ctx->keygen_info = dctx->gentmp;
+        ctx->keygen_info_count = 2;
+        
+        return 1;
+        }
+
+static int pkey_dh_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
+        {
+        DH_PKEY_CTX *dctx, *sctx;
+        if (!pkey_dh_init(dst))
+                return 0;
+        sctx = src->data;
+        dctx = dst->data;
+        dctx->prime_len = sctx->prime_len;
+        dctx->generator = sctx->generator;
+        dctx->use_dsa = sctx->use_dsa;
+        return 1;
+        }
+
+static void pkey_dh_cleanup(EVP_PKEY_CTX *ctx)
+        {
+        DH_PKEY_CTX *dctx = ctx->data;
+        if (dctx)
+                OPENSSL_free(dctx);
+        }
+
+static int pkey_dh_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
+        {
+        DH_PKEY_CTX *dctx = ctx->data;
+        switch (type)
+                {
+                case EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN:
+                if (p1 < 256)
+                        return -2;
+                dctx->prime_len = p1;
+                return 1;
+
+                case EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR:
+                dctx->generator = p1;
+                return 1;
+
+                case EVP_PKEY_CTRL_PEER_KEY:
+                /* Default behaviour is OK */
+                return 1;
+
+                default:
+                return -2;
+
+                }
+        }
+
+                        
+static int pkey_dh_ctrl_str(EVP_PKEY_CTX *ctx,
+                        const char *type, const char *value)
+        {
+        if (!strcmp(type, "dh_paramgen_prime_len"))
+                {
+                int len;
+                len = atoi(value);
+                return EVP_PKEY_CTX_set_dh_paramgen_prime_len(ctx, len);
+                }
+        if (!strcmp(type, "dh_paramgen_generator"))
+                {
+                int len;
+                len = atoi(value);
+                return EVP_PKEY_CTX_set_dh_paramgen_generator(ctx, len);
+                }
+        return -2;
+        }
+
+static int pkey_dh_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
+        {
+        DH *dh = NULL;
+        DH_PKEY_CTX *dctx = ctx->data;
+        BN_GENCB *pcb, cb;
+        int ret;
+        if (ctx->pkey_gencb)
+                {
+                pcb = &cb;
+                evp_pkey_set_cb_translate(pcb, ctx);
+                }
+        else
+                pcb = NULL;
+        dh = DH_new();
+        if (!dh)
+                return 0;
+        ret = DH_generate_parameters_ex(dh,
+                                        dctx->prime_len, dctx->generator, pcb);
+        if (ret)
+                EVP_PKEY_assign_DH(pkey, dh);
+        else
+                DH_free(dh);
+        return ret;
+        }
+
+static int pkey_dh_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
+        {
+        DH *dh = NULL;
+        if (ctx->pkey == NULL)
+                {
+                DHerr(DH_F_PKEY_DH_KEYGEN, DH_R_NO_PARAMETERS_SET);
+                return 0;
+                }
+        dh = DH_new();
+        if (!dh)
+                return 0;
+        EVP_PKEY_assign_DH(pkey, dh);
+        /* Note: if error return, pkey is freed by parent routine */
+        if (!EVP_PKEY_copy_parameters(pkey, ctx->pkey))
+                return 0;
+        return DH_generate_key(pkey->pkey.dh);
+        }
+
+static int pkey_dh_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen)
+        {
+        int ret;
+        if (!ctx->pkey || !ctx->peerkey)
+                {
+                DHerr(DH_F_PKEY_DH_DERIVE, DH_R_KEYS_NOT_SET);
+                return 0;
+                }
+        ret = DH_compute_key(key, ctx->peerkey->pkey.dh->pub_key,
+                                                        ctx->pkey->pkey.dh);
+        if (ret < 0)
+                return ret;
+        *keylen = ret;
+        return 1;
+        }
+
+const EVP_PKEY_METHOD dh_pkey_meth = 
+        {
+        EVP_PKEY_DH,
+        EVP_PKEY_FLAG_AUTOARGLEN,
+        pkey_dh_init,
+        pkey_dh_copy,
+        pkey_dh_cleanup,
+
+        0,
+        pkey_dh_paramgen,
+
+        0,
+        pkey_dh_keygen,
+
+        0,
+        0,
+
+        0,
+        0,
+
+        0,0,
+
+        0,0,0,0,
+
+        0,0,
+
+        0,0,
+
+        0,
+        pkey_dh_derive,
+
+        pkey_dh_ctrl,
+        pkey_dh_ctrl_str
+
+        };