+/* Now two pseudo ASN1 routines that take an EVP_PKEY structure
+ * and encode or decode as X509_PUBKEY
+ */
+
+EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, unsigned char **pp,
+ long length)
+ {
+ X509_PUBKEY *xpk;
+ EVP_PKEY *pktmp;
+ xpk = d2i_X509_PUBKEY(NULL, pp, length);
+ if(!xpk) return NULL;
+ pktmp = X509_PUBKEY_get(xpk);
+ X509_PUBKEY_free(xpk);
+ if(!pktmp) return NULL;
+ if(a)
+ {
+ EVP_PKEY_free(*a);
+ *a = pktmp;
+ }
+ return pktmp;
+ }
+
+int i2d_PUBKEY(EVP_PKEY *a, unsigned char **pp)
+ {
+ X509_PUBKEY *xpk=NULL;
+ int ret;
+ if(!a) return 0;
+ if(!X509_PUBKEY_set(&xpk, a)) return 0;
+ ret = i2d_X509_PUBKEY(xpk, pp);
+ X509_PUBKEY_free(xpk);
+ return ret;
+ }
+
+/* The following are equivalents but which return RSA and DSA
+ * keys
+ */
+#ifndef OPENSSL_NO_RSA
+RSA *d2i_RSA_PUBKEY(RSA **a, unsigned char **pp,
+ long length)
+ {
+ EVP_PKEY *pkey;
+ RSA *key;
+ unsigned char *q;
+ q = *pp;
+ pkey = d2i_PUBKEY(NULL, &q, length);
+ if (!pkey) return NULL;
+ key = EVP_PKEY_get1_RSA(pkey);
+ EVP_PKEY_free(pkey);
+ if (!key) return NULL;
+ *pp = q;
+ if (a)
+ {
+ RSA_free(*a);
+ *a = key;
+ }
+ return key;
+ }
+
+int i2d_RSA_PUBKEY(RSA *a, unsigned char **pp)
+ {
+ EVP_PKEY *pktmp;
+ int ret;
+ if (!a) return 0;
+ pktmp = EVP_PKEY_new();
+ if (!pktmp)
+ {
+ ASN1err(ASN1_F_I2D_RSA_PUBKEY, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ EVP_PKEY_set1_RSA(pktmp, a);
+ ret = i2d_PUBKEY(pktmp, pp);
+ EVP_PKEY_free(pktmp);
+ return ret;
+ }
+#endif
+
+#ifndef OPENSSL_NO_DSA
+DSA *d2i_DSA_PUBKEY(DSA **a, unsigned char **pp,
+ long length)
+ {
+ EVP_PKEY *pkey;
+ DSA *key;
+ unsigned char *q;
+ q = *pp;
+ pkey = d2i_PUBKEY(NULL, &q, length);
+ if (!pkey) return NULL;
+ key = EVP_PKEY_get1_DSA(pkey);
+ EVP_PKEY_free(pkey);
+ if (!key) return NULL;
+ *pp = q;
+ if (a)
+ {
+ DSA_free(*a);
+ *a = key;
+ }
+ return key;
+ }
+
+int i2d_DSA_PUBKEY(DSA *a, unsigned char **pp)
+ {
+ EVP_PKEY *pktmp;
+ int ret;
+ if(!a) return 0;
+ pktmp = EVP_PKEY_new();
+ if(!pktmp)
+ {
+ ASN1err(ASN1_F_I2D_DSA_PUBKEY, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ EVP_PKEY_set1_DSA(pktmp, a);
+ ret = i2d_PUBKEY(pktmp, pp);
+ EVP_PKEY_free(pktmp);
+ return ret;
+ }
+#endif
+
+#ifndef OPENSSL_NO_ECDSA
+ECDSA *d2i_ECDSA_PUBKEY(ECDSA **a, unsigned char **pp, long length)
+ {
+ EVP_PKEY *pkey;
+ ECDSA *key;
+ unsigned char *q;
+ q = *pp;
+ pkey = d2i_PUBKEY(NULL, &q, length);
+ if (!pkey) return(NULL);
+ key = EVP_PKEY_get1_ECDSA(pkey);
+ EVP_PKEY_free(pkey);
+ if (!key) return(NULL);
+ *pp = q;
+ if (a)
+ {
+ ECDSA_free(*a);
+ *a = key;
+ }
+ return(key);
+ }
+
+int i2d_ECDSA_PUBKEY(ECDSA *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);
+ return(0);
+ }
+ EVP_PKEY_set1_ECDSA(pktmp, a);
+ ret = i2d_PUBKEY(pktmp, pp);
+ EVP_PKEY_free(pktmp);
+ return(ret);
+ }
+#endif