projects / thirdparty / openssl.git / blame
| Commit | Line | Data |
|---|---|---|
| a8da8918 UM |
1 | /* crypto/dsa/dsa_asn1.c */ |
| 2 | ||
| 3 | #include <stdio.h> | |
| 4 | #include "cryptlib.h" | |
| 5 | #include "dsa.h" | |
| 6 | #include "asn1.h" | |
| 7 | #include "asn1_mac.h" | |
| 8 | ||
| 9 | DSA_SIG *DSA_SIG_new(void) | |
| 10 | { | |
| 11 | DSA_SIG *ret; | |
| 12 | ||
| 13 | ret = Malloc(sizeof(DSA_SIG)); | |
| 14 | if (ret == NULL) | |
| 15 | { | |
| 16 | DSAerr(DSA_F_DSA_SIG_NEW,ERR_R_MALLOC_FAILURE); | |
| 17 | return(NULL); | |
| 18 | } | |
| 19 | ret->r = NULL; | |
| 20 | ret->s = NULL; | |
| 21 | return(ret); | |
| 22 | } | |
| 23 | ||
| 24 | void DSA_SIG_free(r) | |
| 25 | DSA_SIG *r; | |
| 26 | { | |
| 27 | if (r == NULL) return; | |
| 28 | if (r->r) BN_clear_free(r->r); | |
| 29 | if (r->s) BN_clear_free(r->s); | |
| 30 | Free(r); | |
| 31 | } | |
| 32 | ||
| 33 | int i2d_DSA_SIG(v,pp) | |
| 34 | DSA_SIG *v; | |
| 35 | unsigned char **pp; | |
| 36 | { | |
| 37 | int t=0,len; | |
| 38 | ASN1_INTEGER rbs,sbs; | |
| 39 | unsigned char *p; | |
| 40 | ||
| 41 | rbs.data=Malloc(BN_num_bits(v->r)/8+1); | |
| 42 | if (rbs.data == NULL) | |
| 43 | { | |
| 44 | DSAerr(DSA_F_I2D_DSA_SIG, ERR_R_MALLOC_FAILURE); | |
| 45 | return(0); | |
| 46 | } | |
| 47 | rbs.type=V_ASN1_INTEGER; | |
| 48 | rbs.length=BN_bn2bin(v->r,rbs.data); | |
| 49 | sbs.data=Malloc(BN_num_bits(v->s)/8+1); | |
| 50 | if (sbs.data == NULL) | |
| 51 | { | |
| 52 | Free(rbs.data); | |
| 53 | DSAerr(DSA_F_I2D_DSA_SIG, ERR_R_MALLOC_FAILURE); | |
| 54 | return(0); | |
| 55 | } | |
| 56 | sbs.type=V_ASN1_INTEGER; | |
| 57 | sbs.length=BN_bn2bin(v->s,sbs.data); | |
| 58 | ||
| 59 | len=i2d_ASN1_INTEGER(&rbs,NULL); | |
| 60 | len+=i2d_ASN1_INTEGER(&sbs,NULL); | |
| 61 | ||
| 62 | if (pp) | |
| 63 | { | |
| 64 | p=*pp; | |
| 65 | ASN1_put_object(&p,1,len,V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL); | |
| 66 | i2d_ASN1_INTEGER(&rbs,&p); | |
| 67 | i2d_ASN1_INTEGER(&sbs,&p); | |
| 68 | } | |
| 69 | t=ASN1_object_size(1,len,V_ASN1_SEQUENCE); | |
| 70 | Free(rbs.data); | |
| 71 | Free(sbs.data); | |
| 72 | return(t); | |
| 73 | } | |
| 74 | ||
| 75 | DSA_SIG *d2i_DSA_SIG(a,pp,length) | |
| 76 | DSA_SIG **a; | |
| 77 | unsigned char **pp; | |
| 78 | long length; | |
| 79 | { | |
| 80 | int i=ERR_R_NESTED_ASN1_ERROR; | |
| 81 | ASN1_INTEGER *bs=NULL; | |
| 82 | M_ASN1_D2I_vars(a,DSA_SIG *,DSA_SIG_new); | |
| 83 | ||
| 84 | M_ASN1_D2I_Init(); | |
| 85 | M_ASN1_D2I_start_sequence(); | |
| 86 | M_ASN1_D2I_get(bs,d2i_ASN1_INTEGER); | |
| 87 | if ((ret->r=BN_bin2bn(bs->data,bs->length,ret->r)) == NULL) | |
| 88 | goto err_bn; | |
| 89 | M_ASN1_D2I_get(bs,d2i_ASN1_INTEGER); | |
| 90 | if ((ret->s=BN_bin2bn(bs->data,bs->length,ret->s)) == NULL) | |
| 91 | goto err_bn; | |
| 92 | ASN1_BIT_STRING_free(bs); | |
| 93 | M_ASN1_D2I_Finish_2(a); | |
| 94 | ||
| 95 | err_bn: | |
| 96 | i=ERR_R_BN_LIB; | |
| 97 | err: | |
| 98 | DSAerr(DSA_F_D2I_DSA_SIG,i); | |
| 99 | if ((ret != NULL) && ((a == NULL) || (*a != ret))) DSA_SIG_free(ret); | |
| 100 | if (bs != NULL) ASN1_BIT_STRING_free(bs); | |
| 101 | return(NULL); | |
| 102 | } |