New function to add dynamic alias.

crypto/asn1/ameth_lib.c

@@ -172,7 +172,7 @@ const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(const char *str, int len)
 	return NULL;
 	}
 
-int EVP_PKEY_asn1_add(const EVP_PKEY_ASN1_METHOD *ameth)
+int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth)
 	{
 	if (app_methods == NULL)
 		{
@@ -186,6 +186,17 @@ int EVP_PKEY_asn1_add(const EVP_PKEY_ASN1_METHOD *ameth)
 	return 1;
 	}
 
+int EVP_PKEY_asn1_add_alias(int to, int from)
+	{
+	EVP_PKEY_ASN1_METHOD *ameth;
+	ameth = EVP_PKEY_asn1_new(from, NULL, NULL);
+	if (!ameth)
+		return 0;
+	ameth->pkey_base_id = to;
+	ameth->pkey_flags |= ASN1_PKEY_ALIAS;
+	return EVP_PKEY_asn1_add0(ameth);
+	}
+
 int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *ppkey_base_id, int *ppkey_flags,
 				const char **pinfo, const char **ppem_str,
 					const EVP_PKEY_ASN1_METHOD *ameth)

crypto/evp/evp.h

@@ -863,7 +863,8 @@ int EVP_PKEY_asn1_get_count(void);
 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx);
 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(int type);
 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(const char *str, int len);
-int EVP_PKEY_asn1_add(const EVP_PKEY_ASN1_METHOD *ameth);
+int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth);
+int EVP_PKEY_asn1_add_alias(int to, int from);
 int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *pkey_base_id, int *ppkey_flags,
 				const char **pinfo, const char **ppem_str,
 					const EVP_PKEY_ASN1_METHOD *ameth);