PR: 2813
[openssl.git] / crypto / asn1 / x_pubkey.c
index 227b0ce046bc94b9da4f8a0cd1bbbb808dca1127..b649e1fcf96ce322d5a1422cd5ae58b8ae1715fe 100644 (file)
 #include "cryptlib.h"
 #include <openssl/asn1t.h>
 #include <openssl/x509.h>
+#include "asn1_locl.h"
+#ifndef OPENSSL_NO_RSA
+#include <openssl/rsa.h>
+#endif
+#ifndef OPENSSL_NO_DSA
+#include <openssl/dsa.h>
+#endif
 
 /* Minor tweak to operation: free up EVP_PKEY */
-static int pubkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it)
+static int pubkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                       void *exarg)
        {
        if (operation == ASN1_OP_FREE_POST)
                {
@@ -81,220 +89,106 @@ IMPLEMENT_ASN1_FUNCTIONS(X509_PUBKEY)
 
 int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey)
        {
-       int ok=0;
-       X509_PUBKEY *pk;
-       X509_ALGOR *a;
-       ASN1_OBJECT *o;
-       unsigned char *s,*p;
-       int i;
+       X509_PUBKEY *pk=NULL;
 
        if (x == NULL) return(0);
 
-       if ((pk=X509_PUBKEY_new()) == NULL) goto err;
-       a=pk->algor;
+       if ((pk=X509_PUBKEY_new()) == NULL) goto error;
 
-       /* set the algorithm id */
-       if ((o=OBJ_nid2obj(pkey->type)) == NULL) goto err;
-       ASN1_OBJECT_free(a->algorithm);
-       a->algorithm=o;
-
-       /* Set the parameter list */
-       if (!pkey->save_parameters || (pkey->type == EVP_PKEY_RSA))
-               {
-               if ((a->parameter == NULL) ||
-                       (a->parameter->type != V_ASN1_NULL))
-                       {
-                       ASN1_TYPE_free(a->parameter);
-                       a->parameter=ASN1_TYPE_new();
-                       a->parameter->type=V_ASN1_NULL;
-                       }
-               }
-#ifndef OPENSSL_NO_DSA
-       else if (pkey->type == EVP_PKEY_DSA)
-               {
-               unsigned char *pp;
-               DSA *dsa;
-               
-               dsa=pkey->pkey.dsa;
-               dsa->write_params=0;
-               ASN1_TYPE_free(a->parameter);
-               i=i2d_DSAparams(dsa,NULL);
-               p=(unsigned char *)OPENSSL_malloc(i);
-               pp=p;
-               i2d_DSAparams(dsa,&pp);
-               a->parameter=ASN1_TYPE_new();
-               a->parameter->type=V_ASN1_SEQUENCE;
-               a->parameter->value.sequence=ASN1_STRING_new();
-               ASN1_STRING_set(a->parameter->value.sequence,p,i);
-               OPENSSL_free(p);
-               }
-#endif
-#ifndef OPENSSL_NO_ECDSA
-       else if (pkey->type == EVP_PKEY_ECDSA)
+       if (pkey->ameth)
                {
-               unsigned char *pp;
-               ECDSA *ecdsa;
-               
-               ecdsa = pkey->pkey.ecdsa;
-               ecdsa->write_params=0;
-               ASN1_TYPE_free(a->parameter);
-               if ((i = i2d_ECDSAParameters(ecdsa, NULL)) == 0)
-                       {
-                       X509err(X509_F_X509_PUBKEY_SET, ERR_R_ECDSA_LIB);
-                       goto err;
-                       }
-               if ((p = (unsigned char *) OPENSSL_malloc(i)) == NULL)
-                       {
-                       X509err(X509_F_X509_PUBKEY_SET, ERR_R_MALLOC_FAILURE);
-                       goto err;
-                       }       
-               pp = p;
-               if (!i2d_ECDSAParameters(ecdsa, &pp))
+               if (pkey->ameth->pub_encode)
                        {
-                       X509err(X509_F_X509_PUBKEY_SET, ERR_R_ECDSA_LIB);
-                       OPENSSL_free(p);
-                       goto err;
-                       }
-               if ((a->parameter = ASN1_TYPE_new()) == NULL)
-                       {
-                       X509err(X509_F_X509_PUBKEY_SET, ERR_R_ASN1_LIB);
-                       OPENSSL_free(p);
-                       goto err;
+                       if (!pkey->ameth->pub_encode(pk, pkey))
+                               {
+                               X509err(X509_F_X509_PUBKEY_SET,
+                                       X509_R_PUBLIC_KEY_ENCODE_ERROR);
+                               goto error;
+                               }
                        }
-               a->parameter->type = V_ASN1_SEQUENCE;
-               if ((a->parameter->value.sequence = ASN1_STRING_new()) == NULL)
+               else
                        {
-                       X509err(X509_F_X509_PUBKEY_SET, ERR_R_ASN1_LIB);
-                       OPENSSL_free(p);
-                       goto err;
+                       X509err(X509_F_X509_PUBKEY_SET,
+                               X509_R_METHOD_NOT_SUPPORTED);
+                       goto error;
                        }
-               ASN1_STRING_set(a->parameter->value.sequence, p, i);
-               OPENSSL_free(p);
                }
-#endif
-       else if (1)
+       else
                {
                X509err(X509_F_X509_PUBKEY_SET,X509_R_UNSUPPORTED_ALGORITHM);
-               goto err;
+               goto error;
                }
 
-       if ((i=i2d_PublicKey(pkey,NULL)) <= 0) goto err;
-       if ((s=(unsigned char *)OPENSSL_malloc(i+1)) == NULL) goto err;
-       p=s;
-       i2d_PublicKey(pkey,&p);
-       if (!M_ASN1_BIT_STRING_set(pk->public_key,s,i)) goto err;
-       /* Set number of unused bits to zero */
-       pk->public_key->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07);
-       pk->public_key->flags|=ASN1_STRING_FLAG_BITS_LEFT;
-
-       OPENSSL_free(s);
-
-#if 0
-       CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
-       pk->pkey=pkey;
-#endif
-
        if (*x != NULL)
                X509_PUBKEY_free(*x);
 
        *x=pk;
-       pk=NULL;
 
-       ok=1;
-err:
+       return 1;
+error:
        if (pk != NULL) X509_PUBKEY_free(pk);
-       return(ok);
+       return 0;
        }
 
 EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key)
        {
        EVP_PKEY *ret=NULL;
-       long j;
-       int type;
-       unsigned char *p;
-#ifndef OPENSSL_NO_DSA
-       const unsigned char *cp;
-       X509_ALGOR *a;
-#endif
 
-       if (key == NULL) goto err;
+       if (key == NULL) goto error;
 
        if (key->pkey != NULL)
                {
                CRYPTO_add(&key->pkey->references, 1, CRYPTO_LOCK_EVP_PKEY);
-               return(key->pkey);
+               return key->pkey;
                }
 
-       if (key->public_key == NULL) goto err;
+       if (key->public_key == NULL) goto error;
 
-       type=OBJ_obj2nid(key->algor->algorithm);
        if ((ret = EVP_PKEY_new()) == NULL)
                {
                X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
-               goto err;
+               goto error;
                }
-       ret->type = EVP_PKEY_type(type);
 
-       /* the parameters must be extracted before the public key (ECDSA!) */
-       
-       a=key->algor;
+       if (!EVP_PKEY_set_type(ret, OBJ_obj2nid(key->algor->algorithm)))
+               {
+               X509err(X509_F_X509_PUBKEY_GET,X509_R_UNSUPPORTED_ALGORITHM);
+               goto error;
+               }
 
-       if (0)
-               ;
-#ifndef OPENSSL_NO_DSA
-       else if (ret->type == EVP_PKEY_DSA)
+       if (ret->ameth->pub_decode)
                {
-               if (a->parameter && (a->parameter->type == V_ASN1_SEQUENCE))
+               if (!ret->ameth->pub_decode(ret, key))
                        {
-                       if ((ret->pkey.dsa = DSA_new()) == NULL)
-                               {
-                               X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
-                               goto err;
-                               }
-                       ret->pkey.dsa->write_params=0;
-                       cp=p=a->parameter->value.sequence->data;
-                       j=a->parameter->value.sequence->length;
-                       if (!d2i_DSAparams(&ret->pkey.dsa, &cp, (long)j))
-                               goto err;
+                       X509err(X509_F_X509_PUBKEY_GET,
+                                               X509_R_PUBLIC_KEY_DECODE_ERROR);
+                       goto error;
                        }
-               ret->save_parameters=1;
                }
-#endif
-#ifndef OPENSSL_NO_ECDSA
-       else if (ret->type == EVP_PKEY_ECDSA)
+       else
                {
-               if (a->parameter && (a->parameter->type == V_ASN1_SEQUENCE))
-                       {
-                       if ((ret->pkey.ecdsa= ECDSA_new()) == NULL)
-                               {
-                               X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE);
-                               goto err;
-                               }
-                       ret->pkey.ecdsa->write_params = 0;
-                       cp = p = a->parameter->value.sequence->data;
-                       j = a->parameter->value.sequence->length;
-                       if (!d2i_ECDSAParameters(&ret->pkey.ecdsa, &cp, (long)j))
-                               {
-                               X509err(X509_F_X509_PUBKEY_GET, ERR_R_ECDSA_LIB);
-                               goto err;
-                               }
-                       }
-               ret->save_parameters = 1;
+               X509err(X509_F_X509_PUBKEY_GET, X509_R_METHOD_NOT_SUPPORTED);
+               goto error;
                }
-#endif
 
-       p=key->public_key->data;
-        j=key->public_key->length;
-        if ((ret = d2i_PublicKey(type, &ret, &p, (long)j)) == NULL)
+       /* Check to see if another thread set key->pkey first */
+       CRYPTO_w_lock(CRYPTO_LOCK_EVP_PKEY);
+       if (key->pkey)
                {
-               X509err(X509_F_X509_PUBKEY_GET, X509_R_ERR_ASN1_LIB);
-               goto err;
+               CRYPTO_w_unlock(CRYPTO_LOCK_EVP_PKEY);
+               EVP_PKEY_free(ret);
+               ret = key->pkey;
+               }
+       else
+               {
+               key->pkey = ret;
+               CRYPTO_w_unlock(CRYPTO_LOCK_EVP_PKEY);
                }
-
-       key->pkey = ret;
        CRYPTO_add(&ret->references, 1, CRYPTO_LOCK_EVP_PKEY);
-       return(ret);
-err:
+
+       return ret;
+
+       error:
        if (ret != NULL)
                EVP_PKEY_free(ret);
        return(NULL);
@@ -304,7 +198,7 @@ err:
  * and encode or decode as X509_PUBKEY
  */
 
-EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, unsigned char **pp,
+EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, const unsigned char **pp,
             long length)
        {
        X509_PUBKEY *xpk;
@@ -337,12 +231,12 @@ int i2d_PUBKEY(EVP_PKEY *a, unsigned char **pp)
  * keys
  */
 #ifndef OPENSSL_NO_RSA
-RSA *d2i_RSA_PUBKEY(RSA **a, unsigned char **pp,
+RSA *d2i_RSA_PUBKEY(RSA **a, const unsigned char **pp,
             long length)
        {
        EVP_PKEY *pkey;
        RSA *key;
-       unsigned char *q;
+       const unsigned char *q;
        q = *pp;
        pkey = d2i_PUBKEY(NULL, &q, length);
        if (!pkey) return NULL;
@@ -377,12 +271,12 @@ int i2d_RSA_PUBKEY(RSA *a, unsigned char **pp)
 #endif
 
 #ifndef OPENSSL_NO_DSA
-DSA *d2i_DSA_PUBKEY(DSA **a, unsigned char **pp,
+DSA *d2i_DSA_PUBKEY(DSA **a, const unsigned char **pp,
             long length)
        {
        EVP_PKEY *pkey;
        DSA *key;
-       unsigned char *q;
+       const unsigned char *q;
        q = *pp;
        pkey = d2i_PUBKEY(NULL, &q, length);
        if (!pkey) return NULL;
@@ -416,40 +310,76 @@ int i2d_DSA_PUBKEY(DSA *a, unsigned char **pp)
        }
 #endif
 
-#ifndef OPENSSL_NO_ECDSA
-ECDSA *d2i_ECDSA_PUBKEY(ECDSA **a, unsigned char **pp, long length)
+#ifndef OPENSSL_NO_EC
+EC_KEY *d2i_EC_PUBKEY(EC_KEY **a, const unsigned char **pp, long length)
        {
        EVP_PKEY *pkey;
-       ECDSA *key;
-       unsigned char *q;
+       EC_KEY *key;
+       const unsigned char *q;
        q = *pp;
        pkey = d2i_PUBKEY(NULL, &q, length);
        if (!pkey) return(NULL);
-       key = EVP_PKEY_get1_ECDSA(pkey);
+       key = EVP_PKEY_get1_EC_KEY(pkey);
        EVP_PKEY_free(pkey);
        if (!key)  return(NULL);
        *pp = q;
        if (a)
                {
-               ECDSA_free(*a);
+               EC_KEY_free(*a);
                *a = key;
                }
        return(key);
        }
 
-int i2d_ECDSA_PUBKEY(ECDSA *a, unsigned char **pp)
+int i2d_EC_PUBKEY(EC_KEY *a, unsigned char **pp)
        {
        EVP_PKEY *pktmp;
        int ret;
        if (!a) return(0);
        if ((pktmp = EVP_PKEY_new()) == NULL)
                {
-               ASN1err(ASN1_F_I2D_ECDSA_PUBKEY, ERR_R_MALLOC_FAILURE);
+               ASN1err(ASN1_F_I2D_EC_PUBKEY, ERR_R_MALLOC_FAILURE);
                return(0);
                }
-       EVP_PKEY_set1_ECDSA(pktmp, a);
+       EVP_PKEY_set1_EC_KEY(pktmp, a);
        ret = i2d_PUBKEY(pktmp, pp);
        EVP_PKEY_free(pktmp);
        return(ret);
        }
 #endif
+
+int X509_PUBKEY_set0_param(X509_PUBKEY *pub, ASN1_OBJECT *aobj,
+                                       int ptype, void *pval,
+                                       unsigned char *penc, int penclen)
+       {
+       if (!X509_ALGOR_set0(pub->algor, aobj, ptype, pval))
+               return 0;
+       if (penc)
+               {
+               if (pub->public_key->data)
+                       OPENSSL_free(pub->public_key->data);
+               pub->public_key->data = penc;
+               pub->public_key->length = penclen;
+               /* Set number of unused bits to zero */
+               pub->public_key->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07);
+               pub->public_key->flags|=ASN1_STRING_FLAG_BITS_LEFT;
+               }
+       return 1;
+       }
+
+int X509_PUBKEY_get0_param(ASN1_OBJECT **ppkalg,
+               const unsigned char **pk, int *ppklen,
+               X509_ALGOR **pa,
+               X509_PUBKEY *pub)
+       {
+       if (ppkalg)
+               *ppkalg = pub->algor->algorithm;
+       if (pk)
+               {
+               *pk = pub->public_key->data;
+               *ppklen = pub->public_key->length;
+               }
+       if (pa)
+               *pa = pub->algor;
+       return 1;
+       }