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Diffstat (limited to 'crypto/asn1/d2i_dhp.c')
| -rw-r--r-- | crypto/asn1/d2i_dhp.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/crypto/asn1/d2i_dhp.c b/crypto/asn1/d2i_dhp.c new file mode 100644 index 0000000000..6ae3e0efa3 --- /dev/null +++ b/crypto/asn1/d2i_dhp.c @@ -0,0 +1,108 @@ +/* crypto/asn1/d2i_dhp.c */ +/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@cryptsoft.com). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * 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 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 acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@cryptsoft.com)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS 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 AUTHOR OR 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. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] + */ + +#include <stdio.h> +#include "cryptlib.h" +#include "bn.h" +#include "dh.h" +#include "objects.h" +#include "asn1_mac.h" + +/* + * ASN1err(ASN1_F_D2I_DHPARAMS,ASN1_R_LENGTH_MISMATCH); + * ASN1err(ASN1_F_I2D_DHPARAMS,ASN1_R_UNKNOWN_ATTRIBUTE_TYPE); + */ + +DH *d2i_DHparams(a,pp,length) +DH **a; +unsigned char **pp; +long length; + { + int i=ASN1_R_ERROR_STACK; + ASN1_INTEGER *bs=NULL; + long v=0; + M_ASN1_D2I_vars(a,DH *,DH_new); + + M_ASN1_D2I_Init(); + M_ASN1_D2I_start_sequence(); + M_ASN1_D2I_get(bs,d2i_ASN1_INTEGER); + if ((ret->p=BN_bin2bn(bs->data,bs->length,ret->p)) == NULL) goto err_bn; + M_ASN1_D2I_get(bs,d2i_ASN1_INTEGER); + if ((ret->g=BN_bin2bn(bs->data,bs->length,ret->g)) == NULL) goto err_bn; + + if (!M_ASN1_D2I_end_sequence()) + { + M_ASN1_D2I_get(bs,d2i_ASN1_INTEGER); + for (i=0; i<bs->length; i++) + v=(v<<8)|(bs->data[i]); + ret->length=(int)v; + } + + ASN1_BIT_STRING_free(bs); + + M_ASN1_D2I_Finish_2(a); + +err_bn: + i=ERR_R_BN_LIB; +err: + ASN1err(ASN1_F_D2I_DHPARAMS,i); + if ((ret != NULL) && ((a == NULL) || (*a != ret))) DH_free(ret); + if (bs != NULL) ASN1_BIT_STRING_free(bs); + return(NULL); + } + |