Add error checking to publickey_from_privatekey().
git-svn-id: svn+ssh://svn.berlios.de/svnroot/repos/libssh/trunk@433 7dcaeef0-15fb-0310-b436-a5af3365683c
Этот коммит содержится в:
родитель
89670904c0
Коммит
8333393470
219
libssh/keys.c
219
libssh/keys.c
@ -299,81 +299,166 @@ error:
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* \returns the public key
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* \returns the public key
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* \see publickey_to_string()
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* \see publickey_to_string()
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*/
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*/
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PUBLIC_KEY *publickey_from_privatekey(PRIVATE_KEY *prv){
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PUBLIC_KEY *publickey_from_privatekey(PRIVATE_KEY *prv) {
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PUBLIC_KEY *key;
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PUBLIC_KEY *key = NULL;
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#ifdef HAVE_LIBGCRYPT
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#ifdef HAVE_LIBGCRYPT
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gcry_sexp_t sexp;
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gcry_sexp_t sexp;
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const char *tmp;
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const char *tmp = NULL;
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size_t size;
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size_t size;
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STRING *p,*q,*g,*y,*e,*n;
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STRING *p = NULL;
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STRING *q = NULL;
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STRING *g = NULL;
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STRING *y = NULL;
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STRING *e = NULL;
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STRING *n = NULL;
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#endif /* HAVE_LIBGCRYPT */
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#endif /* HAVE_LIBGCRYPT */
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key=malloc(sizeof(PUBLIC_KEY));
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key = malloc(sizeof(PUBLIC_KEY));
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if (key == NULL) {
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if (key == NULL) {
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return NULL;
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return NULL;
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}
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}
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key->type=prv->type;
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switch(key->type){
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key->type = prv->type;
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case TYPE_DSS:
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switch(key->type) {
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case TYPE_DSS:
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#ifdef HAVE_LIBGCRYPT
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#ifdef HAVE_LIBGCRYPT
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sexp=gcry_sexp_find_token(prv->dsa_priv,"p",0);
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sexp = gcry_sexp_find_token(prv->dsa_priv, "p", 0);
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tmp=gcry_sexp_nth_data(sexp,1,&size);
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tmp = gcry_sexp_nth_data(sexp, 1, &size);
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p=string_new(size);
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p = string_new(size);
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string_fill(p,(char *)tmp,size);
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if (p == NULL) {
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gcry_sexp_release(sexp);
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goto error;
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sexp=gcry_sexp_find_token(prv->dsa_priv,"q",0);
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}
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tmp=gcry_sexp_nth_data(sexp,1,&size);
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string_fill(p,(char *) tmp, size);
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q=string_new(size);
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gcry_sexp_release(sexp);
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string_fill(q,(char *)tmp,size);
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gcry_sexp_release(sexp);
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sexp = gcry_sexp_find_token(prv->dsa_priv,"q",0);
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sexp=gcry_sexp_find_token(prv->dsa_priv,"g",0);
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tmp = gcry_sexp_nth_data(sexp,1,&size);
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tmp=gcry_sexp_nth_data(sexp,1,&size);
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q = string_new(size);
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g=string_new(size);
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if (q == NULL) {
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string_fill(g,(char *)tmp,size);
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goto error;
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gcry_sexp_release(sexp);
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}
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sexp=gcry_sexp_find_token(prv->dsa_priv,"y",0);
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string_fill(q,(char *) tmp,size);
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tmp=gcry_sexp_nth_data(sexp,1,&size);
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gcry_sexp_release(sexp);
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y=string_new(size);
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string_fill(y,(char *)tmp,size);
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sexp = gcry_sexp_find_token(prv->dsa_priv, "g", 0);
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gcry_sexp_release(sexp);
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tmp = gcry_sexp_nth_data(sexp,1,&size);
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gcry_sexp_build(&key->dsa_pub,NULL,"(public-key(dsa(p %b)(q %b)(g %b)(y %b)))",string_len(p),p->string,string_len(q),q->string,string_len(g),g->string,string_len(y),y->string);
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g = string_new(size);
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free(p);
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if (g == NULL) {
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free(q);
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goto error;
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free(g);
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}
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free(y);
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string_fill(g,(char *) tmp,size);
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gcry_sexp_release(sexp);
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sexp=gcry_sexp_find_token(prv->dsa_priv,"y",0);
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tmp=gcry_sexp_nth_data(sexp,1,&size);
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y = string_new(size);
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if (y == NULL) {
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goto error;
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}
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string_fill(y,(char *) tmp,size);
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gcry_sexp_release(sexp);
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gcry_sexp_build(&key->dsa_pub, NULL,
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"(public-key(dsa(p %b)(q %b)(g %b)(y %b)))",
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string_len(p), p->string,
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string_len(q), q->string,
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string_len(g), g->string,
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string_len(y), y->string);
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string_burn(p);
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string_free(p);
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string_burn(q);
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string_free(q);
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string_burn(g);
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string_free(g);
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string_burn(y);
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string_free(y);
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#elif defined HAVE_LIBCRYPTO
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#elif defined HAVE_LIBCRYPTO
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key->dsa_pub=DSA_new();
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key->dsa_pub = DSA_new();
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key->dsa_pub->p=BN_dup(prv->dsa_priv->p);
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if (key->dsa_pub == NULL) {
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key->dsa_pub->q=BN_dup(prv->dsa_priv->q);
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goto error;
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key->dsa_pub->pub_key=BN_dup(prv->dsa_priv->pub_key);
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}
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key->dsa_pub->g=BN_dup(prv->dsa_priv->g);
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key->dsa_pub->p = BN_dup(prv->dsa_priv->p);
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#endif
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key->dsa_pub->q = BN_dup(prv->dsa_priv->q);
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break;
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key->dsa_pub->g = BN_dup(prv->dsa_priv->g);
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case TYPE_RSA:
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key->dsa_pub->pub_key = BN_dup(prv->dsa_priv->pub_key);
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case TYPE_RSA1:
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if (key->dsa_pub->p == NULL ||
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key->dsa_pub->q == NULL ||
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key->dsa_pub->g == NULL ||
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key->dsa_pub->pub_key == NULL) {
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goto error;
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}
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#endif /* HAVE_LIBCRYPTO */
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break;
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case TYPE_RSA:
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case TYPE_RSA1:
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#ifdef HAVE_LIBGCRYPT
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#ifdef HAVE_LIBGCRYPT
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sexp=gcry_sexp_find_token(prv->rsa_priv,"n",0);
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sexp = gcry_sexp_find_token(prv->rsa_priv, "n", 0);
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tmp=gcry_sexp_nth_data(sexp,1,&size);
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tmp = gcry_sexp_nth_data(sexp, 1, &size);
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n=string_new(size);
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n = string_new(size);
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string_fill(n,(char *)tmp,size);
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if (n == NULL) {
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gcry_sexp_release(sexp);
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goto error;
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sexp=gcry_sexp_find_token(prv->rsa_priv,"e",0);
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}
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tmp=gcry_sexp_nth_data(sexp,1,&size);
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string_fill(n, (char *) tmp, size);
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e=string_new(size);
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gcry_sexp_release(sexp);
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string_fill(e,(char *)tmp,size);
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gcry_sexp_release(sexp);
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sexp = gcry_sexp_find_token(prv->rsa_priv, "e", 0);
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gcry_sexp_build(&key->rsa_pub,NULL,"(public-key(rsa(n %b)(e %b)))",string_len(n),n->string,string_len(e),e->string);
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tmp = gcry_sexp_nth_data(sexp, 1, &size);
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free(e);
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e = string_new(size);
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free(n);
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if (e == NULL) {
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goto error;
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}
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string_fill(e, (char *) tmp, size);
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gcry_sexp_release(sexp);
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gcry_sexp_build(&key->rsa_pub, NULL,
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"(public-key(rsa(n %b)(e %b)))",
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string_len(n), n->string,
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string_len(e), e->string);
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if (key->rsa_pub == NULL) {
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goto error;
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}
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string_burn(e);
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string_free(e);
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string_burn(n);
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string_free(n);
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#elif defined HAVE_LIBCRYPTO
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#elif defined HAVE_LIBCRYPTO
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key->rsa_pub=RSA_new();
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key->rsa_pub = RSA_new();
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key->rsa_pub->e=BN_dup(prv->rsa_priv->e);
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if (key->rsa_pub == NULL) {
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key->rsa_pub->n=BN_dup(prv->rsa_priv->n);
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goto error;
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}
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key->rsa_pub->e = BN_dup(prv->rsa_priv->e);
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key->rsa_pub->n = BN_dup(prv->rsa_priv->n);
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if (key->rsa_pub->e == NULL ||
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key->rsa_pub->n == NULL) {
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goto error;
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}
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#endif
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#endif
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break;
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break;
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}
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}
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key->type_c=ssh_type_to_char(prv->type);
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key->type_c = ssh_type_to_char(prv->type);
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return key;
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return key;
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error:
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#ifdef HAVE_LIBGCRYPT
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string_burn(p);
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string_free(p);
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string_burn(q);
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string_free(q);
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string_burn(g);
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string_free(g);
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string_burn(y);
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string_free(y);
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string_burn(e);
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string_free(e);
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string_burn(n);
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string_free(n);
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#endif
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publickey_free(key);
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return NULL;
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}
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}
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#ifdef HAVE_LIBGCRYPT
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#ifdef HAVE_LIBGCRYPT
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