File openssl-add_rfc3526_rfc7919.patch of Package openssl-1_0_0.27670
diff --git a/crypto/dh/dh.h b/crypto/dh/dh.h
index 2ff8f56..8e82976 100644
--- a/crypto/dh/dh.h
+++ b/crypto/dh/dh.h
@@ -261,6 +261,21 @@ DH *DH_get_1024_160(void);
DH *DH_get_2048_224(void);
DH *DH_get_2048_256(void);
+/* RFC 3526 parameters */
+DH *DH_rfc3526_get_1536(void);
+DH *DH_rfc3526_get_2048(void);
+DH *DH_rfc3526_get_3072(void);
+DH *DH_rfc3526_get_4096(void);
+DH *DH_rfc3526_get_6144(void);
+DH *DH_rfc3526_get_8192(void);
+
+/* RFC 7919 parameters */
+DH *DH_rfc7919_get_2048(void);
+DH *DH_rfc7919_get_3072(void);
+DH *DH_rfc7919_get_4096(void);
+DH *DH_rfc7919_get_6144(void);
+DH *DH_rfc7919_get_8192(void);
+
# ifndef OPENSSL_NO_CMS
/* RFC2631 KDF */
int DH_KDF_X9_42(unsigned char *out, size_t outlen,
@@ -293,6 +308,11 @@ int DH_KDF_X9_42(unsigned char *out, size_t outlen,
EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, EVP_PKEY_OP_PARAMGEN, \
EVP_PKEY_CTRL_DH_RFC5114, gen, NULL)
+# define EVP_PKEY_CTX_set_dh_nid(ctx, nid) \
+ EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, \
+ EVP_PKEY_OP_PARAMGEN | EVP_PKEY_OP_KEYGEN, \
+ EVP_PKEY_CTRL_DH_NID, nid, NULL)
+
# define EVP_PKEY_CTX_set_dh_kdf_type(ctx, kdf) \
EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DHX, \
EVP_PKEY_OP_DERIVE, \
@@ -357,6 +377,7 @@ int DH_KDF_X9_42(unsigned char *out, size_t outlen,
# define EVP_PKEY_CTRL_GET_DH_KDF_UKM (EVP_PKEY_ALG_CTRL + 12)
# define EVP_PKEY_CTRL_DH_KDF_OID (EVP_PKEY_ALG_CTRL + 13)
# define EVP_PKEY_CTRL_GET_DH_KDF_OID (EVP_PKEY_ALG_CTRL + 14)
+# define EVP_PKEY_CTRL_DH_NID (EVP_PKEY_ALG_CTRL + 15)
/* KDF types */
# define EVP_PKEY_DH_KDF_NONE 1
diff --git a/crypto/dh/dh_pmeth.c b/crypto/dh/dh_pmeth.c
index 162753a..2290c3b 100644
--- a/crypto/dh/dh_pmeth.c
+++ b/crypto/dh/dh_pmeth.c
@@ -80,6 +80,7 @@ typedef struct {
/* message digest used for parameter generation */
const EVP_MD *md;
int rfc5114_param;
+ int param_nid;
/* Keygen callback info */
int gentmp[2];
/* KDF (if any) to use for DH */
@@ -107,6 +108,7 @@ static int pkey_dh_init(EVP_PKEY_CTX *ctx)
dctx->use_dsa = 0;
dctx->md = NULL;
dctx->rfc5114_param = 0;
+ dctx->param_nid = NID_undef;
dctx->kdf_type = EVP_PKEY_DH_KDF_NONE;
dctx->kdf_oid = NULL;
@@ -135,6 +137,7 @@ static int pkey_dh_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
dctx->use_dsa = sctx->use_dsa;
dctx->md = sctx->md;
dctx->rfc5114_param = sctx->rfc5114_param;
+ dctx->param_nid = sctx->param_nid;
dctx->kdf_type = sctx->kdf_type;
dctx->kdf_oid = OBJ_dup(sctx->kdf_oid);
@@ -195,11 +198,17 @@ static int pkey_dh_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
return 1;
case EVP_PKEY_CTRL_DH_RFC5114:
- if (p1 < 1 || p1 > 3)
+ if (p1 < 1 || p1 > 3 || dctx->param_nid != NID_undef)
return -2;
dctx->rfc5114_param = p1;
return 1;
+ case EVP_PKEY_CTRL_DH_NID:
+ if (p1 <= 0 || dctx->rfc5114_param != 0)
+ return -2;
+ dctx->param_nid = p1;
+ return 1;
+
case EVP_PKEY_CTRL_PEER_KEY:
/* Default behaviour is OK */
return 1;
@@ -281,6 +290,16 @@ static int pkey_dh_ctrl_str(EVP_PKEY_CTX *ctx,
dctx->rfc5114_param = len;
return 1;
}
+ if (strcmp(type, "dh_param") == 0) {
+ DH_PKEY_CTX *dctx = ctx->data;
+ int nid = OBJ_sn2nid(value);
+
+ if (nid == NID_undef) {
+ return -2;
+ }
+ dctx->param_nid = nid;
+ return 1;
+ }
if (!strcmp(type, "dh_paramgen_generator")) {
int len;
len = atoi(value);
@@ -380,6 +399,53 @@ static int pkey_dh_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
return 1;
}
+ /*
+ * Look for a safe prime group for key establishment. Which uses
+ * either RFC_3526 (modp_XXXX) or RFC_7919 (ffdheXXXX).
+ */
+ if (dctx->param_nid != 0) {
+ switch (dctx->param_nid) {
+ case NID_ffdhe2048:
+ dh = DH_rfc7919_get_2048();
+ break;
+ case NID_ffdhe3072:
+ dh = DH_rfc7919_get_3072();
+ break;
+ case NID_ffdhe4096:
+ dh = DH_rfc7919_get_4096();
+ break;
+ case NID_ffdhe6144:
+ dh = DH_rfc7919_get_6144();
+ break;
+ case NID_ffdhe8192:
+ dh = DH_rfc7919_get_8192();
+ break;
+ case NID_modp_2048:
+ dh = DH_rfc3526_get_2048();
+ break;
+ case NID_modp_3072:
+ dh = DH_rfc3526_get_3072();
+ break;
+ case NID_modp_4096:
+ dh = DH_rfc3526_get_4096();
+ break;
+ case NID_modp_6144:
+ dh = DH_rfc3526_get_6144();
+ break;
+ case NID_modp_8192:
+ dh = DH_rfc3526_get_8192();
+ break;
+ case NID_modp_1536:
+ dh = DH_rfc3526_get_1536();
+ break;
+ default:
+ return NULL;
+ }
+ EVP_PKEY_assign(pkey, EVP_PKEY_DH, dh);
+ return 1;
+ }
+
+
if (ctx->pkey_gencb) {
pcb = &cb;
evp_pkey_set_cb_translate(pcb, ctx);
@@ -415,16 +481,22 @@ static int pkey_dh_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
static int pkey_dh_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
{
DH *dh = NULL;
- if (ctx->pkey == NULL) {
+ DH_PKEY_CTX *dctx = ctx->data;
+
+ if (ctx->pkey == NULL && dctx->param_nid == 0) {
DHerr(DH_F_PKEY_DH_KEYGEN, DH_R_NO_PARAMETERS_SET);
return 0;
}
- dh = DH_new();
+ if (dctx->param_nid != 0)
+ dh = DH_new_by_nid(dctx->param_nid);
+ else
+ dh = DH_new();
+
if (!dh)
return 0;
EVP_PKEY_assign(pkey, ctx->pmeth->pkey_id, dh);
/* Note: if error return, pkey is freed by parent routine */
- if (!EVP_PKEY_copy_parameters(pkey, ctx->pkey))
+ if (ctx->pkey != NULL && !EVP_PKEY_copy_parameters(pkey, ctx->pkey))
return 0;
return DH_generate_key(pkey->pkey.dh);
}
diff --git a/crypto/dh/dh_rfc5114.c b/crypto/dh/dh_rfc5114.c
index 3f05bb0..eb2fbf2 100644
--- a/crypto/dh/dh_rfc5114.c
+++ b/crypto/dh/dh_rfc5114.c
@@ -1098,6 +1098,64 @@ const BIGNUM _bignum_const_2 = {
(BN_ULONG *)&value_2, 1, 1, 0, BN_FLG_STATIC_DATA
};
+/* Similar macro to make a DH structure for rfc3526 */
+
+#define make_rfc3526_dh(x) \
+DH * DH_rfc3526_get_##x(void) \
+ { \
+ DH *dh; \
+ make_dh_bn(modp_##x##_p); \
+ make_dh_bn(modp_##x##_q); \
+ dh = DH_new(); \
+ if (!dh) \
+ return NULL; \
+ dh->p = BN_dup(&_bignum_modp_##x##_p); \
+ dh->q = BN_dup(&_bignum_modp_##x##_q); \
+ dh->g = BN_dup(&_bignum_const_2); \
+ if (!dh->p || !dh->q || !dh->g) \
+ { \
+ DH_free(dh); \
+ return NULL; \
+ } \
+ return dh; \
+ }
+
+make_rfc3526_dh(1536)
+make_rfc3526_dh(2048)
+make_rfc3526_dh(3072)
+make_rfc3526_dh(4096)
+make_rfc3526_dh(6144)
+make_rfc3526_dh(8192)
+
+
+/* Similar macro to make a DH structure for rfc7919 */
+
+#define make_rfc7919_dh(x) \
+DH * DH_rfc7919_get_##x(void) \
+ { \
+ DH *dh; \
+ make_dh_bn(ffdhe##x##_p); \
+ make_dh_bn(ffdhe##x##_q); \
+ dh = DH_new(); \
+ if (!dh) \
+ return NULL; \
+ dh->p = BN_dup(&_bignum_ffdhe##x##_p); \
+ dh->q = BN_dup(&_bignum_ffdhe##x##_q); \
+ dh->g = BN_dup(&_bignum_const_2); \
+ if (!dh->p || !dh->q || !dh->g) \
+ { \
+ DH_free(dh); \
+ return NULL; \
+ } \
+ return dh; \
+ }
+
+make_rfc7919_dh(2048)
+make_rfc7919_dh(3072)
+make_rfc7919_dh(4096)
+make_rfc7919_dh(6144)
+make_rfc7919_dh(8192)
+
make_dh_bn(dh1024_160_p)
make_dh_bn(dh1024_160_q)
make_dh_bn(dh1024_160_g)
diff --git a/doc/apps/genpkey.pod b/doc/apps/genpkey.pod
index 2e24400..4da1dd2 100644
--- a/doc/apps/genpkey.pod
+++ b/doc/apps/genpkey.pod
@@ -190,6 +190,15 @@ The value to use for the generator B<g>. The default is 2.
The type of DH parameters to generate. Use 0 for PKCS#3 DH and 1 for X9.42 DH.
The default is 0.
+=item B<dh_param>:I<name>
+
+Use a named DH group to select constant values for the DH parameters.
+All other options will be ignored if this value is set.
+
+Valid values are:
+"ffdhe2048", "ffdhe3072", "ffdhe4096", "ffdhe6144", "ffdhe8192",
+"modp_1536", "modp_2048", "modp_3072", "modp_4096", "modp_6144", "modp_8192".
+
=item B<dh_rfc5114:num>
If this option is set, then the appropriate RFC5114 parameters are used
