Latest update

crypto/evp/evp_utils.c

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+/*
+ * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+/* Internal EVP utility functions */
+
+#include <openssl/core.h>
+#include <openssl/evp.h>
+#include <openssl/err.h>
+#include <openssl/asn1.h>        /* evp_locl.h needs it */
+#include <openssl/safestack.h>   /* evp_locl.h needs it */
+#include "internal/evp_int.h"    /* evp_locl.h needs it */
+#include "evp_locl.h"
+
+int evp_do_ciph_getparams(const void *vciph, void *ignored,
+                          OSSL_PARAM params[])
+{
+    const EVP_CIPHER *ciph = vciph;
+
+    if (ciph->prov == NULL)
+        return -2;
+    if (ciph->get_params == NULL)
+        return -1;
+    return ciph->get_params(params);
+}
+
+int evp_do_ciph_ctx_getparams(const void *vciph, void *provctx,
+                              OSSL_PARAM params[])
+{
+    const EVP_CIPHER *ciph = vciph;
+
+    if (ciph->prov == NULL)
+        return -2;
+    if (ciph->ctx_get_params == NULL)
+        return -1;
+    return ciph->ctx_get_params(provctx, params);
+}
+
+int evp_do_ciph_ctx_setparams(const void *vciph, void *provctx,
+                              OSSL_PARAM params[])
+{
+    const EVP_CIPHER *ciph = vciph;
+
+    if (ciph->prov == NULL)
+        return -2;
+    if (ciph->ctx_set_params == NULL)
+        return -1;
+    return ciph->ctx_set_params(provctx, params);
+}
+
+int evp_do_param(const void *method, void *ptr, size_t sz, const char *key,
+                 int datatype,
+                 int (*cb)(const void *method, void *ctx, OSSL_PARAM params[]),
+                 void *cb_ctx)
+{
+    OSSL_PARAM params[2] = {
+        OSSL_PARAM_END,
+        OSSL_PARAM_END
+    };
+    int ret;
+
+    params[0].key = key;
+    params[0].data_type = datatype;
+    params[0].data = ptr;
+    params[0].data_size = sz;
+
+    ret = cb(method, cb_ctx, params);
+    if (ret == -1) {
+        EVPerr(0, EVP_R_CTRL_NOT_IMPLEMENTED);
+        ret = 0;
+    }
+    return ret;
+}