diff options
Diffstat (limited to 'openssl/crypto/asn1/evp_asn1.c')
| -rw-r--r-- | openssl/crypto/asn1/evp_asn1.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/openssl/crypto/asn1/evp_asn1.c b/openssl/crypto/asn1/evp_asn1.c new file mode 100644 index 000000000..f3d980486 --- /dev/null +++ b/openssl/crypto/asn1/evp_asn1.c @@ -0,0 +1,189 @@ +/* crypto/asn1/evp_asn1.c */ +/* Copyright (C) 1995-1998 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 <openssl/asn1.h> +#include <openssl/asn1_mac.h> + +int ASN1_TYPE_set_octetstring(ASN1_TYPE *a, unsigned char *data, int len) + { + ASN1_STRING *os; + + if ((os=M_ASN1_OCTET_STRING_new()) == NULL) return(0); + if (!M_ASN1_OCTET_STRING_set(os,data,len)) return(0); + ASN1_TYPE_set(a,V_ASN1_OCTET_STRING,os); + return(1); + } + +/* int max_len: for returned value */ +int ASN1_TYPE_get_octetstring(ASN1_TYPE *a, unsigned char *data, + int max_len) + { + int ret,num; + unsigned char *p; + + if ((a->type != V_ASN1_OCTET_STRING) || (a->value.octet_string == NULL)) + { + ASN1err(ASN1_F_ASN1_TYPE_GET_OCTETSTRING,ASN1_R_DATA_IS_WRONG); + return(-1); + } + p=M_ASN1_STRING_data(a->value.octet_string); + ret=M_ASN1_STRING_length(a->value.octet_string); + if (ret < max_len) + num=ret; + else + num=max_len; + memcpy(data,p,num); + return(ret); + } + +int ASN1_TYPE_set_int_octetstring(ASN1_TYPE *a, long num, unsigned char *data, + int len) + { + int n,size; + ASN1_OCTET_STRING os,*osp; + ASN1_INTEGER in; + unsigned char *p; + unsigned char buf[32]; /* when they have 256bit longs, + * I'll be in trouble */ + in.data=buf; + in.length=32; + os.data=data; + os.type=V_ASN1_OCTET_STRING; + os.length=len; + ASN1_INTEGER_set(&in,num); + n = i2d_ASN1_INTEGER(&in,NULL); + n+=M_i2d_ASN1_OCTET_STRING(&os,NULL); + + size=ASN1_object_size(1,n,V_ASN1_SEQUENCE); + + if ((osp=ASN1_STRING_new()) == NULL) return(0); + /* Grow the 'string' */ + if (!ASN1_STRING_set(osp,NULL,size)) + { + ASN1_STRING_free(osp); + return(0); + } + + M_ASN1_STRING_length_set(osp, size); + p=M_ASN1_STRING_data(osp); + + ASN1_put_object(&p,1,n,V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL); + i2d_ASN1_INTEGER(&in,&p); + M_i2d_ASN1_OCTET_STRING(&os,&p); + + ASN1_TYPE_set(a,V_ASN1_SEQUENCE,osp); + return(1); + } + +/* we return the actual length..., num may be missing, in which + * case, set it to zero */ +/* int max_len: for returned value */ +int ASN1_TYPE_get_int_octetstring(ASN1_TYPE *a, long *num, unsigned char *data, + int max_len) + { + int ret= -1,n; + ASN1_INTEGER *ai=NULL; + ASN1_OCTET_STRING *os=NULL; + const unsigned char *p; + long length; + ASN1_const_CTX c; + + if ((a->type != V_ASN1_SEQUENCE) || (a->value.sequence == NULL)) + { + goto err; + } + p=M_ASN1_STRING_data(a->value.sequence); + length=M_ASN1_STRING_length(a->value.sequence); + + c.pp= &p; + c.p=p; + c.max=p+length; + c.error=ASN1_R_DATA_IS_WRONG; + + M_ASN1_D2I_start_sequence(); + c.q=c.p; + if ((ai=d2i_ASN1_INTEGER(NULL,&c.p,c.slen)) == NULL) goto err; + c.slen-=(c.p-c.q); + c.q=c.p; + if ((os=d2i_ASN1_OCTET_STRING(NULL,&c.p,c.slen)) == NULL) goto err; + c.slen-=(c.p-c.q); + if (!M_ASN1_D2I_end_sequence()) goto err; + + if (num != NULL) + *num=ASN1_INTEGER_get(ai); + + ret=M_ASN1_STRING_length(os); + if (max_len > ret) + n=ret; + else + n=max_len; + + if (data != NULL) + memcpy(data,M_ASN1_STRING_data(os),n); + if (0) + { +err: + ASN1err(ASN1_F_ASN1_TYPE_GET_INT_OCTETSTRING,ASN1_R_DATA_IS_WRONG); + } + if (os != NULL) M_ASN1_OCTET_STRING_free(os); + if (ai != NULL) M_ASN1_INTEGER_free(ai); + return(ret); + } + |