diff options
Diffstat (limited to 'crypto/pkcs7/example.c')
| -rw-r--r-- | crypto/pkcs7/example.c | 357 |
1 files changed, 357 insertions, 0 deletions
diff --git a/crypto/pkcs7/example.c b/crypto/pkcs7/example.c new file mode 100644 index 0000000000..9309e1d5ef --- /dev/null +++ b/crypto/pkcs7/example.c @@ -0,0 +1,357 @@ +#include <stdio.h> +#include <stdlib.h> +#include <malloc.h> +#include "pkcs7.h" + +int add_signed_time(si) +PKCS7_SIGNER_INFO *si; + { + ASN1_UTCTIME *sign_time; + + /* The last parameter is the amount to add/subtract from the current + * time (in seconds) */ + sign_time=X509_gmtime_adj(NULL,0); + PKCS7_add_signed_attribute(si,NID_pkcs9_signingTime, + V_ASN1_UTCTIME,(char *)sign_time); + return(1); + } + +ASN1_UTCTIME *get_signed_time(si) +PKCS7_SIGNER_INFO *si; + { + ASN1_TYPE *so; + ASN1_UTCTIME *ut; + + so=PKCS7_get_signed_attribute(si,NID_pkcs9_signingTime); + if (so->type == V_ASN1_UTCTIME) + { + ut=so->value.utctime; + } + return(ut); + } + +static int signed_string_nid= -1; + +int add_signed_string(si,str) +PKCS7_SIGNER_INFO *si; +char *str; + { + ASN1_OCTET_STRING *os; + + /* To a an object of OID 1.2.3.4.5, which is an octet string */ + if (signed_string_nid == -1) + signed_string_nid= + OBJ_create("1.2.3.4.5","OID_example","Our example OID"); + os=ASN1_OCTET_STRING_new(); + ASN1_OCTET_STRING_set(os,str,strlen(str)); + /* When we add, we do not free */ + PKCS7_add_signed_attribute(si,signed_string_nid, + V_ASN1_OCTET_STRING,(char *)os); + } + +int get_signed_string(si,buf,len) +PKCS7_SIGNER_INFO *si; +char *buf; +int len; + { + ASN1_TYPE *so; + ASN1_OCTET_STRING *os; + int i; + + if (signed_string_nid == -1) + signed_string_nid= + OBJ_create("1.2.3.4.5","OID_example","Our example OID"); + /* To retrieve */ + so=PKCS7_get_signed_attribute(si,signed_string_nid); + if (so != NULL) + { + if (so->type == V_ASN1_OCTET_STRING) + { + os=so->value.octet_string; + i=os->length; + if ((i+1) > len) + i=len-1; + memcpy(buf,os->data,i); + return(i); + } + } + return(0); + } + +static signed_seq2string_nid= -1; +/* ########################################### */ +int add_signed_seq2string(si,str1,str2) +PKCS7_SIGNER_INFO *si; +char *str1; +char *str2; + /* To add an object of OID 1.9.999, which is a sequence containing + * 2 octet strings */ + { + unsigned char *p; + ASN1_OCTET_STRING *os1,*os2; + ASN1_STRING *seq; + char *data; + int i,total; + + if (signed_seq2string_nid == -1) + signed_seq2string_nid= + OBJ_create("1.9.9999","OID_example","Our example OID"); + + os1=ASN1_OCTET_STRING_new(); + os2=ASN1_OCTET_STRING_new(); + ASN1_OCTET_STRING_set(os1,str1,strlen(str1)); + ASN1_OCTET_STRING_set(os2,str1,strlen(str1)); + i =i2d_ASN1_OCTET_STRING(os1,NULL); + i+=i2d_ASN1_OCTET_STRING(os2,NULL); + total=ASN1_object_size(1,i,V_ASN1_SEQUENCE); + + data=malloc(total); + p=data; + ASN1_put_object(&p,1,i,V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL); + i2d_ASN1_OCTET_STRING(os1,&p); + i2d_ASN1_OCTET_STRING(os2,&p); + + seq=ASN1_STRING_new(); + ASN1_STRING_set(seq,data,total); + free(data); + ASN1_OCTET_STRING_free(os1); + ASN1_OCTET_STRING_free(os2); + + PKCS7_add_signed_attribute(si,signed_seq2string_nid, + V_ASN1_SEQUENCE,(char *)seq); + return(1); + } + +/* For this case, I will malloc the return strings */ +int get_signed_seq2string(si,str1,str2) +PKCS7_SIGNER_INFO *si; +char **str1; +char **str2; + { + ASN1_TYPE *so; + + if (signed_seq2string_nid == -1) + signed_seq2string_nid= + OBJ_create("1.9.9999","OID_example","Our example OID"); + /* To retrieve */ + so=PKCS7_get_signed_attribute(si,signed_seq2string_nid); + if (so->type == V_ASN1_SEQUENCE) + { + ASN1_CTX c; + ASN1_STRING *s; + long length; + ASN1_OCTET_STRING *os1,*os2; + + s=so->value.sequence; + c.p=ASN1_STRING_data(s); + c.max=c.p+ASN1_STRING_length(s); + if (!asn1_GetSequence(&c,&length)) goto err; + /* Length is the length of the seqence */ + + c.q=c.p; + if ((os1=d2i_ASN1_OCTET_STRING(NULL,&c.p,c.slen)) == NULL) + goto err; + c.slen-=(c.p-c.q); + + c.q=c.p; + if ((os2=d2i_ASN1_OCTET_STRING(NULL,&c.p,c.slen)) == NULL) + goto err; + c.slen-=(c.p-c.q); + + if (!asn1_Finish(&c)) goto err; + *str1=malloc(os1->length+1); + *str2=malloc(os2->length+1); + memcpy(*str1,os1->data,os1->length); + memcpy(*str2,os2->data,os2->length); + (*str1)[os1->length]='\0'; + (*str2)[os2->length]='\0'; + ASN1_OCTET_STRING_free(os1); + ASN1_OCTET_STRING_free(os2); + return(1); + } +err: + return(0); + } + + +/* ####################################### + * THE OTHER WAY TO DO THINGS + * ####################################### + */ +X509_ATTRIBUTE *create_time() + { + ASN1_UTCTIME *sign_time; + X509_ATTRIBUTE *ret; + + /* The last parameter is the amount to add/subtract from the current + * time (in seconds) */ + sign_time=X509_gmtime_adj(NULL,0); + ret=X509_ATTRIBUTE_create(NID_pkcs9_signingTime, + V_ASN1_UTCTIME,(char *)sign_time); + return(ret); + } + +ASN1_UTCTIME *sk_get_time(sk) +STACK *sk; + { + ASN1_TYPE *so; + ASN1_UTCTIME *ut; + PKCS7_SIGNER_INFO si; + + si.auth_attr=sk; + so=PKCS7_get_signed_attribute(&si,NID_pkcs9_signingTime); + if (so->type == V_ASN1_UTCTIME) + { + ut=so->value.utctime; + } + return(ut); + } + +X509_ATTRIBUTE *create_string(si,str) +char *str; + { + ASN1_OCTET_STRING *os; + X509_ATTRIBUTE *ret; + + /* To a an object of OID 1.2.3.4.5, which is an octet string */ + if (signed_string_nid == -1) + signed_string_nid= + OBJ_create("1.2.3.4.5","OID_example","Our example OID"); + os=ASN1_OCTET_STRING_new(); + ASN1_OCTET_STRING_set(os,str,strlen(str)); + /* When we add, we do not free */ + ret=X509_ATTRIBUTE_create(signed_string_nid, + V_ASN1_OCTET_STRING,(char *)os); + return(ret); + } + +int sk_get_string(sk,buf,len) +STACK *sk; +char *buf; +int len; + { + ASN1_TYPE *so; + ASN1_OCTET_STRING *os; + int i; + PKCS7_SIGNER_INFO si; + + si.auth_attr=sk; + + if (signed_string_nid == -1) + signed_string_nid= + OBJ_create("1.2.3.4.5","OID_example","Our example OID"); + /* To retrieve */ + so=PKCS7_get_signed_attribute(&si,signed_string_nid); + if (so != NULL) + { + if (so->type == V_ASN1_OCTET_STRING) + { + os=so->value.octet_string; + i=os->length; + if ((i+1) > len) + i=len-1; + memcpy(buf,os->data,i); + return(i); + } + } + return(0); + } + +X509_ATTRIBUTE *add_seq2string(si,str1,str2) +PKCS7_SIGNER_INFO *si; +char *str1; +char *str2; + /* To add an object of OID 1.9.999, which is a sequence containing + * 2 octet strings */ + { + unsigned char *p; + ASN1_OCTET_STRING *os1,*os2; + ASN1_STRING *seq; + X509_ATTRIBUTE *ret; + char *data; + int i,total; + + if (signed_seq2string_nid == -1) + signed_seq2string_nid= + OBJ_create("1.9.9999","OID_example","Our example OID"); + + os1=ASN1_OCTET_STRING_new(); + os2=ASN1_OCTET_STRING_new(); + ASN1_OCTET_STRING_set(os1,str1,strlen(str1)); + ASN1_OCTET_STRING_set(os2,str1,strlen(str1)); + i =i2d_ASN1_OCTET_STRING(os1,NULL); + i+=i2d_ASN1_OCTET_STRING(os2,NULL); + total=ASN1_object_size(1,i,V_ASN1_SEQUENCE); + + data=malloc(total); + p=data; + ASN1_put_object(&p,1,i,V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL); + i2d_ASN1_OCTET_STRING(os1,&p); + i2d_ASN1_OCTET_STRING(os2,&p); + + seq=ASN1_STRING_new(); + ASN1_STRING_set(seq,data,total); + free(data); + ASN1_OCTET_STRING_free(os1); + ASN1_OCTET_STRING_free(os2); + + ret=X509_ATTRIBUTE_create(signed_seq2string_nid, + V_ASN1_SEQUENCE,(char *)seq); + return(ret); + } + +/* For this case, I will malloc the return strings */ +int sk_get_seq2string(sk,str1,str2) +STACK *sk; +char **str1; +char **str2; + { + ASN1_TYPE *so; + PKCS7_SIGNER_INFO si; + + if (signed_seq2string_nid == -1) + signed_seq2string_nid= + OBJ_create("1.9.9999","OID_example","Our example OID"); + + si.auth_attr=sk; + /* To retrieve */ + so=PKCS7_get_signed_attribute(&si,signed_seq2string_nid); + if (so->type == V_ASN1_SEQUENCE) + { + ASN1_CTX c; + ASN1_STRING *s; + long length; + ASN1_OCTET_STRING *os1,*os2; + + s=so->value.sequence; + c.p=ASN1_STRING_data(s); + c.max=c.p+ASN1_STRING_length(s); + if (!asn1_GetSequence(&c,&length)) goto err; + /* Length is the length of the seqence */ + + c.q=c.p; + if ((os1=d2i_ASN1_OCTET_STRING(NULL,&c.p,c.slen)) == NULL) + goto err; + c.slen-=(c.p-c.q); + + c.q=c.p; + if ((os2=d2i_ASN1_OCTET_STRING(NULL,&c.p,c.slen)) == NULL) + goto err; + c.slen-=(c.p-c.q); + + if (!asn1_Finish(&c)) goto err; + *str1=malloc(os1->length+1); + *str2=malloc(os2->length+1); + memcpy(*str1,os1->data,os1->length); + memcpy(*str2,os2->data,os2->length); + (*str1)[os1->length]='\0'; + (*str2)[os2->length]='\0'; + ASN1_OCTET_STRING_free(os1); + ASN1_OCTET_STRING_free(os2); + return(1); + } +err: + return(0); + } + + |