diff options
Diffstat (limited to 'src/lib/libcrypto/dsa/dsa_asn1.c')
| -rw-r--r-- | src/lib/libcrypto/dsa/dsa_asn1.c | 86 |
1 files changed, 47 insertions, 39 deletions
diff --git a/src/lib/libcrypto/dsa/dsa_asn1.c b/src/lib/libcrypto/dsa/dsa_asn1.c index 25288a0dda..cc03f29823 100644 --- a/src/lib/libcrypto/dsa/dsa_asn1.c +++ b/src/lib/libcrypto/dsa/dsa_asn1.c | |||
| @@ -1,4 +1,4 @@ | |||
| 1 | /* $OpenBSD: dsa_asn1.c,v 1.10 2014/06/12 15:49:28 deraadt Exp $ */ | 1 | /* $OpenBSD: dsa_asn1.c,v 1.11 2014/07/09 10:16:24 miod Exp $ */ |
| 2 | /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL | 2 | /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
| 3 | * project 2000. | 3 | * project 2000. |
| 4 | */ | 4 | */ |
| @@ -64,17 +64,17 @@ | |||
| 64 | #include <openssl/rand.h> | 64 | #include <openssl/rand.h> |
| 65 | 65 | ||
| 66 | /* Override the default new methods */ | 66 | /* Override the default new methods */ |
| 67 | static int sig_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, | 67 | static int |
| 68 | void *exarg) | 68 | sig_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, void *exarg) |
| 69 | { | 69 | { |
| 70 | if(operation == ASN1_OP_NEW_PRE) { | 70 | if (operation == ASN1_OP_NEW_PRE) { |
| 71 | DSA_SIG *sig; | 71 | DSA_SIG *sig; |
| 72 | |||
| 72 | sig = malloc(sizeof(DSA_SIG)); | 73 | sig = malloc(sizeof(DSA_SIG)); |
| 73 | if (!sig) | 74 | if (!sig) { |
| 74 | { | ||
| 75 | DSAerr(DSA_F_SIG_CB, ERR_R_MALLOC_FAILURE); | 75 | DSAerr(DSA_F_SIG_CB, ERR_R_MALLOC_FAILURE); |
| 76 | return 0; | 76 | return 0; |
| 77 | } | 77 | } |
| 78 | sig->r = NULL; | 78 | sig->r = NULL; |
| 79 | sig->s = NULL; | 79 | sig->s = NULL; |
| 80 | *pval = (ASN1_VALUE *)sig; | 80 | *pval = (ASN1_VALUE *)sig; |
| @@ -91,14 +91,15 @@ ASN1_SEQUENCE_cb(DSA_SIG, sig_cb) = { | |||
| 91 | IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA_SIG, DSA_SIG, DSA_SIG) | 91 | IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA_SIG, DSA_SIG, DSA_SIG) |
| 92 | 92 | ||
| 93 | /* Override the default free and new methods */ | 93 | /* Override the default free and new methods */ |
| 94 | static int dsa_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, | 94 | static int |
| 95 | void *exarg) | 95 | dsa_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, void *exarg) |
| 96 | { | 96 | { |
| 97 | if(operation == ASN1_OP_NEW_PRE) { | 97 | if (operation == ASN1_OP_NEW_PRE) { |
| 98 | *pval = (ASN1_VALUE *)DSA_new(); | 98 | *pval = (ASN1_VALUE *)DSA_new(); |
| 99 | if(*pval) return 2; | 99 | if (*pval) |
| 100 | return 2; | ||
| 100 | return 0; | 101 | return 0; |
| 101 | } else if(operation == ASN1_OP_FREE_PRE) { | 102 | } else if (operation == ASN1_OP_FREE_PRE) { |
| 102 | DSA_free((DSA *)*pval); | 103 | DSA_free((DSA *)*pval); |
| 103 | *pval = NULL; | 104 | *pval = NULL; |
| 104 | return 2; | 105 | return 2; |
| @@ -125,7 +126,8 @@ ASN1_SEQUENCE_cb(DSAparams, dsa_cb) = { | |||
| 125 | 126 | ||
| 126 | IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAparams, DSAparams) | 127 | IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAparams, DSAparams) |
| 127 | 128 | ||
| 128 | /* DSA public key is a bit trickier... its effectively a CHOICE type | 129 | /* |
| 130 | * DSA public key is a bit trickier... its effectively a CHOICE type | ||
| 129 | * decided by a field called write_params which can either write out | 131 | * decided by a field called write_params which can either write out |
| 130 | * just the public key as an INTEGER or the parameters and public key | 132 | * just the public key as an INTEGER or the parameters and public key |
| 131 | * in a SEQUENCE | 133 | * in a SEQUENCE |
| @@ -145,43 +147,49 @@ ASN1_CHOICE_cb(DSAPublicKey, dsa_cb) = { | |||
| 145 | 147 | ||
| 146 | IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPublicKey, DSAPublicKey) | 148 | IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DSA, DSAPublicKey, DSAPublicKey) |
| 147 | 149 | ||
| 148 | DSA *DSAparams_dup(DSA *dsa) | 150 | DSA * |
| 149 | { | 151 | DSAparams_dup(DSA *dsa) |
| 152 | { | ||
| 150 | return ASN1_item_dup(ASN1_ITEM_rptr(DSAparams), dsa); | 153 | return ASN1_item_dup(ASN1_ITEM_rptr(DSAparams), dsa); |
| 151 | } | 154 | } |
| 152 | 155 | ||
| 153 | int DSA_sign(int type, const unsigned char *dgst, int dlen, unsigned char *sig, | 156 | int |
| 154 | unsigned int *siglen, DSA *dsa) | 157 | DSA_sign(int type, const unsigned char *dgst, int dlen, unsigned char *sig, |
| 155 | { | 158 | unsigned int *siglen, DSA *dsa) |
| 159 | { | ||
| 156 | DSA_SIG *s; | 160 | DSA_SIG *s; |
| 157 | s=DSA_do_sign(dgst,dlen,dsa); | 161 | |
| 158 | if (s == NULL) | 162 | s = DSA_do_sign(dgst, dlen, dsa); |
| 159 | { | 163 | if (s == NULL) { |
| 160 | *siglen=0; | 164 | *siglen = 0; |
| 161 | return(0); | 165 | return 0; |
| 162 | } | ||
| 163 | *siglen=i2d_DSA_SIG(s,&sig); | ||
| 164 | DSA_SIG_free(s); | ||
| 165 | return(1); | ||
| 166 | } | 166 | } |
| 167 | *siglen = i2d_DSA_SIG(s,&sig); | ||
| 168 | DSA_SIG_free(s); | ||
| 169 | return 1; | ||
| 170 | } | ||
| 167 | 171 | ||
| 168 | /* data has already been hashed (probably with SHA or SHA-1). */ | 172 | /* |
| 169 | /* returns | 173 | * data has already been hashed (probably with SHA or SHA-1). |
| 174 | * returns | ||
| 170 | * 1: correct signature | 175 | * 1: correct signature |
| 171 | * 0: incorrect signature | 176 | * 0: incorrect signature |
| 172 | * -1: error | 177 | * -1: error |
| 173 | */ | 178 | */ |
| 174 | int DSA_verify(int type, const unsigned char *dgst, int dgst_len, | 179 | int |
| 175 | const unsigned char *sigbuf, int siglen, DSA *dsa) | 180 | DSA_verify(int type, const unsigned char *dgst, int dgst_len, |
| 176 | { | 181 | const unsigned char *sigbuf, int siglen, DSA *dsa) |
| 182 | { | ||
| 177 | DSA_SIG *s; | 183 | DSA_SIG *s; |
| 178 | int ret=-1; | 184 | int ret = -1; |
| 179 | 185 | ||
| 180 | s = DSA_SIG_new(); | 186 | s = DSA_SIG_new(); |
| 181 | if (s == NULL) return(ret); | 187 | if (s == NULL) |
| 182 | if (d2i_DSA_SIG(&s,&sigbuf,siglen) == NULL) goto err; | 188 | return ret; |
| 183 | ret=DSA_do_verify(dgst,dgst_len,s,dsa); | 189 | if (d2i_DSA_SIG(&s, &sigbuf, siglen) == NULL) |
| 190 | goto err; | ||
| 191 | ret = DSA_do_verify(dgst, dgst_len, s, dsa); | ||
| 184 | err: | 192 | err: |
| 185 | DSA_SIG_free(s); | 193 | DSA_SIG_free(s); |
| 186 | return(ret); | 194 | return ret; |
| 187 | } | 195 | } |
