1 files changed, 218 insertions, 0 deletions

diff --git a/src/lib/libcrypto/dsa/dsa_asn1.c b/src/lib/libcrypto/dsa/dsa_asn1.c
new file mode 100644
index 0000000000..0645facb4b
--- /dev/null
+++ b/src/lib/libcrypto/dsa/dsa_asn1.c
@@ -0,0 +1,218 @@
+/* dsa_asn1.c */
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2000.
+ */
+/* ====================================================================
+ * Copyright (c) 2000 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/dsa.h>
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/bn.h>
+#ifdef OPENSSL_FIPS
+#include <openssl/fips.h>
+#endif
+
+
+/* Override the default new methods */
+static int sig_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+        if(operation == ASN1_OP_NEW_PRE) {
+                DSA_SIG *sig;
+                sig = OPENSSL_malloc(sizeof(DSA_SIG));
+                sig->r = NULL;
+                sig->s = NULL;
+                *pval = (ASN1_VALUE *)sig;
+                if(sig) return 2;
+                DSAerr(DSA_F_SIG_CB, ERR_R_MALLOC_FAILURE);
+                return 0;
+        }
+        return 1;
+}
+
+ASN1_SEQUENCE_cb(DSA_SIG, sig_cb) = {
+        ASN1_SIMPLE(DSA_SIG, r, CBIGNUM),
+        ASN1_SIMPLE(DSA_SIG, s, CBIGNUM)
+} ASN1_SEQUENCE_END_cb(DSA_SIG, DSA_SIG)
+
+IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA_SIG,DSA_SIG,DSA_SIG)
+
+/* Override the default free and new methods */
+static int dsa_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+        if(operation == ASN1_OP_NEW_PRE) {
+                *pval = (ASN1_VALUE *)DSA_new();
+                if(*pval) return 2;
+                return 0;
+        } else if(operation == ASN1_OP_FREE_PRE) {
+                DSA_free((DSA *)*pval);
+                *pval = NULL;
+                return 2;
+        }
+        return 1;
+}
+
+ASN1_SEQUENCE_cb(DSAPrivateKey, dsa_cb) = {
+        ASN1_SIMPLE(DSA, version, LONG),
+        ASN1_SIMPLE(DSA, p, BIGNUM),
+        ASN1_SIMPLE(DSA, q, BIGNUM),
+        ASN1_SIMPLE(DSA, g, BIGNUM),
+        ASN1_SIMPLE(DSA, pub_key, BIGNUM),
+        ASN1_SIMPLE(DSA, priv_key, BIGNUM)
+} ASN1_SEQUENCE_END_cb(DSA, DSAPrivateKey)
+
+IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPrivateKey, DSAPrivateKey)
+
+ASN1_SEQUENCE_cb(DSAparams, dsa_cb) = {
+        ASN1_SIMPLE(DSA, p, BIGNUM),
+        ASN1_SIMPLE(DSA, q, BIGNUM),
+        ASN1_SIMPLE(DSA, g, BIGNUM),
+} ASN1_SEQUENCE_END_cb(DSA, DSAparams)
+
+IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAparams, DSAparams)
+
+/* DSA public key is a bit trickier... its effectively a CHOICE type
+ * decided by a field called write_params which can either write out
+ * just the public key as an INTEGER or the parameters and public key
+ * in a SEQUENCE
+ */
+
+ASN1_SEQUENCE(dsa_pub_internal) = {
+        ASN1_SIMPLE(DSA, pub_key, BIGNUM),
+        ASN1_SIMPLE(DSA, p, BIGNUM),
+        ASN1_SIMPLE(DSA, q, BIGNUM),
+        ASN1_SIMPLE(DSA, g, BIGNUM)
+} ASN1_SEQUENCE_END_name(DSA, dsa_pub_internal)
+
+ASN1_CHOICE_cb(DSAPublicKey, dsa_cb) = {
+        ASN1_SIMPLE(DSA, pub_key, BIGNUM),
+        ASN1_EX_COMBINE(0, 0, dsa_pub_internal)
+} ASN1_CHOICE_END_cb(DSA, DSAPublicKey, write_params)
+
+IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPublicKey, DSAPublicKey)
+
+int DSA_sign(int type, const unsigned char *dgst, int dlen, unsigned char *sig,
+             unsigned int *siglen, DSA *dsa)
+        {
+        DSA_SIG *s;
+#ifdef OPENSSL_FIPS
+        if(FIPS_mode() && !(dsa->flags & DSA_FLAG_NON_FIPS_ALLOW))
+                {
+                DSAerr(DSA_F_DSA_SIGN, DSA_R_OPERATION_NOT_ALLOWED_IN_FIPS_MODE);
+                return 0;
+                }
+#endif
+        s=DSA_do_sign(dgst,dlen,dsa);
+        if (s == NULL)
+                {
+                *siglen=0;
+                return(0);
+                }
+        *siglen=i2d_DSA_SIG(s,&sig);
+        DSA_SIG_free(s);
+        return(1);
+        }
+
+int DSA_size(const DSA *r)
+        {
+        int ret,i;
+        ASN1_INTEGER bs;
+        unsigned char buf[4];   /* 4 bytes looks really small.
+                                   However, i2d_ASN1_INTEGER() will not look
+                                   beyond the first byte, as long as the second
+                                   parameter is NULL. */
+
+        i=BN_num_bits(r->q);
+        bs.length=(i+7)/8;
+        bs.data=buf;
+        bs.type=V_ASN1_INTEGER;
+        /* If the top bit is set the asn1 encoding is 1 larger. */
+        buf[0]=0xff;    
+
+        i=i2d_ASN1_INTEGER(&bs,NULL);
+        i+=i; /* r and s */
+        ret=ASN1_object_size(1,i,V_ASN1_SEQUENCE);
+        return(ret);
+        }
+
+/* data has already been hashed (probably with SHA or SHA-1). */
+/* returns
+ *      1: correct signature
+ *      0: incorrect signature
+ *     -1: error
+ */
+int DSA_verify(int type, const unsigned char *dgst, int dgst_len,
+             const unsigned char *sigbuf, int siglen, DSA *dsa)
+        {
+        DSA_SIG *s;
+        int ret=-1;
+#ifdef OPENSSL_FIPS
+        if(FIPS_mode() && !(dsa->flags & DSA_FLAG_NON_FIPS_ALLOW))
+                {
+                DSAerr(DSA_F_DSA_VERIFY, DSA_R_OPERATION_NOT_ALLOWED_IN_FIPS_MODE);
+                return 0;
+                }
+#endif
+
+        s = DSA_SIG_new();
+        if (s == NULL) return(ret);
+        if (d2i_DSA_SIG(&s,&sigbuf,siglen) == NULL) goto err;
+        ret=DSA_do_verify(dgst,dgst_len,s,dsa);
+err:
+        DSA_SIG_free(s);
+        return(ret);
+        }
+