1 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
4 /* ====================================================================
5 * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
19 * 3. All advertising materials mentioning features or use of this
20 * software must display the following acknowledgment:
21 * "This product includes software developed by the OpenSSL Project
22 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
25 * endorse or promote products derived from this software without
26 * prior written permission. For written permission, please contact
27 * licensing@OpenSSL.org.
29 * 5. Products derived from this software may not be called "OpenSSL"
30 * nor may "OpenSSL" appear in their names without prior written
31 * permission of the OpenSSL Project.
33 * 6. Redistributions of any form whatsoever must retain the following
35 * "This product includes software developed by the OpenSSL Project
36 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
39 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
40 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
41 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
42 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
43 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
44 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
45 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
46 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
47 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
48 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
49 * OF THE POSSIBILITY OF SUCH DAMAGE.
50 * ====================================================================
52 * This product includes cryptographic software written by Eric Young
53 * (eay@cryptsoft.com). This product includes software written by Tim
54 * Hudson (tjh@cryptsoft.com).
60 #include <openssl/asn1t.h>
61 #include <openssl/x509.h>
62 #include <openssl/rsa.h>
63 #include <openssl/evp.h>
66 /* DSA pkey context structure */
70 /* Parameter gen parameters */
72 /* Keygen callback info */
78 static int pkey_dsa_init(EVP_PKEY_CTX
*ctx
)
81 dctx
= OPENSSL_malloc(sizeof(DSA_PKEY_CTX
));
88 ctx
->keygen_info
= dctx
->gentmp
;
89 ctx
->keygen_info_count
= 2;
94 static void pkey_dsa_cleanup(EVP_PKEY_CTX
*ctx
)
96 DSA_PKEY_CTX
*dctx
= ctx
->data
;
101 static int pkey_dsa_sign(EVP_PKEY_CTX
*ctx
, unsigned char *sig
, int *siglen
,
102 const unsigned char *tbs
, int tbslen
)
106 DSA_PKEY_CTX
*dctx
= ctx
->data
;
107 DSA
*dsa
= ctx
->pkey
->pkey
.dsa
;
110 type
= EVP_MD_type(dctx
->md
);
114 ret
= DSA_sign(type
, tbs
, tbslen
, sig
, &sltmp
, dsa
);
122 static int pkey_dsa_verify(EVP_PKEY_CTX
*ctx
,
123 const unsigned char *sig
, int siglen
,
124 const unsigned char *tbs
, int tbslen
)
127 DSA_PKEY_CTX
*dctx
= ctx
->data
;
128 DSA
*dsa
= ctx
->pkey
->pkey
.dsa
;
131 type
= EVP_MD_type(dctx
->md
);
135 ret
= DSA_verify(type
, tbs
, tbslen
, sig
, siglen
, dsa
);
140 static int pkey_dsa_ctrl(EVP_PKEY_CTX
*ctx
, int type
, int p1
, void *p2
)
142 DSA_PKEY_CTX
*dctx
= ctx
->data
;
145 case EVP_PKEY_CTRL_DSA_PARAMGEN_BITS
:
151 case EVP_PKEY_CTRL_MD
:
152 if (EVP_MD_type((const EVP_MD
*)p2
) != NID_sha1
)
154 DSAerr(DSA_F_PKEY_DSA_CTRL
, DSA_R_INVALID_DIGEST_TYPE
);
166 static int pkey_dsa_ctrl_str(EVP_PKEY_CTX
*ctx
,
167 const char *type
, const char *value
)
169 if (!strcmp(type
, "dsa_paramgen_bits"))
173 return EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx
, nbits
);
178 static int pkey_dsa_paramgen(EVP_PKEY_CTX
*ctx
, EVP_PKEY
*pkey
)
181 DSA_PKEY_CTX
*dctx
= ctx
->data
;
187 evp_pkey_set_cb_translate(pcb
, ctx
);
194 ret
= DSA_generate_parameters_ex(dsa
, dctx
->nbits
, NULL
, 0, NULL
, NULL
,
197 EVP_PKEY_assign_DSA(pkey
, dsa
);
203 const EVP_PKEY_METHOD dsa_pkey_meth
=