diff options
Diffstat (limited to 'src/crypto/dsa/dsa_asn1.c')
-rw-r--r-- | src/crypto/dsa/dsa_asn1.c | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/src/crypto/dsa/dsa_asn1.c b/src/crypto/dsa/dsa_asn1.c new file mode 100644 index 0000000..933fba7 --- /dev/null +++ b/src/crypto/dsa/dsa_asn1.c @@ -0,0 +1,150 @@ +/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL + * project 2000. */ +/* ==================================================================== + * Copyright (c) 2000-2005 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 <openssl/dsa.h> + +#include <string.h> + +#include <openssl/asn1.h> +#include <openssl/asn1t.h> +#include <openssl/err.h> +#include <openssl/mem.h> + +#include "internal.h" + + +static int dsa_sig_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, + void *exarg) { + if (operation != ASN1_OP_NEW_PRE) { + return 1; + } + + DSA_SIG *sig; + sig = OPENSSL_malloc(sizeof(DSA_SIG)); + if (!sig) { + OPENSSL_PUT_ERROR(DSA, dsa_sig_cb, ERR_R_MALLOC_FAILURE); + return 0; + } + + memset(sig, 0, sizeof(DSA_SIG)); + *pval = (ASN1_VALUE *)sig; + return 2; +} + +ASN1_SEQUENCE_cb(DSA_SIG, dsa_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); + + +static int dsa_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, + void *exarg) { + switch (operation) { + case ASN1_OP_NEW_PRE: + *pval = (ASN1_VALUE *)DSA_new(); + if (*pval) { + return 2; + } + return 0; + + case ASN1_OP_FREE_PRE: + DSA_free((DSA *)*pval); + *pval = NULL; + return 2; + + default: + 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); + +DSA *DSAparams_dup(const DSA *dsa) { + return ASN1_item_dup(ASN1_ITEM_rptr(DSAparams), (DSA*) dsa); +} |