Move Poly1305 to providers

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/8877)

1 files changed, 169 insertions, 0 deletions

diff --git a/providers/default/macs/poly1305_prov.c b/providers/default/macs/poly1305_prov.c
new file mode 100644
index 0000000000..c64c2b9e9a
--- /dev/null
+++ b/providers/default/macs/poly1305_prov.c
@@ -0,0 +1,169 @@
+/*
+ * Copyright 2018 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
+ */
+
+#include <openssl/opensslconf.h>
+#ifndef OPENSSL_NO_POLY1305
+
+# include <openssl/core_numbers.h>
+# include <openssl/core_names.h>
+# include <openssl/params.h>
+# include <openssl/evp.h>
+# include <openssl/err.h>
+
+# include "internal/poly1305.h"
+/*
+ * TODO(3.0) when poly1305 has moved entirely to our providers, this
+ * header should be moved to the provider include directory.  For the
+ * moment, crypto/poly1305/poly1305_ameth.c has us stuck.
+ */
+# include "../../../crypto/poly1305/poly1305_local.h"
+
+# include "internal/providercommonerr.h"
+# include "internal/provider_algs.h"
+
+/*
+ * Forward declaration of everything implemented here.  This is not strictly
+ * necessary for the compiler, but provides an assurance that the signatures
+ * of the functions in the dispatch table are correct.
+ */
+static OSSL_OP_mac_newctx_fn poly1305_new;
+static OSSL_OP_mac_dupctx_fn poly1305_dup;
+static OSSL_OP_mac_freectx_fn poly1305_free;
+static OSSL_OP_mac_gettable_params_fn poly1305_gettable_params;
+static OSSL_OP_mac_get_params_fn poly1305_get_params;
+static OSSL_OP_mac_settable_ctx_params_fn poly1305_settable_ctx_params;
+static OSSL_OP_mac_ctx_set_params_fn poly1305_ctx_set_params;
+static OSSL_OP_mac_init_fn poly1305_init;
+static OSSL_OP_mac_update_fn poly1305_update;
+static OSSL_OP_mac_final_fn poly1305_final;
+
+struct poly1305_data_st {
+    void *provctx;
+    POLY1305 poly1305;           /* Poly1305 data */
+};
+
+static size_t poly1305_size(void);
+
+static void *poly1305_new(void *provctx)
+{
+    struct poly1305_data_st *ctx = OPENSSL_zalloc(sizeof(*ctx));
+
+    ctx->provctx = provctx;
+    return ctx;
+}
+
+static void poly1305_free(void *vmacctx)
+{
+    OPENSSL_free(vmacctx);
+}
+
+static void *poly1305_dup(void *vsrc)
+{
+    struct poly1305_data_st *src = vsrc;
+    struct poly1305_data_st *dst = poly1305_new(src->provctx);
+
+    if (dst == NULL)
+        return NULL;
+
+    dst->poly1305 = src->poly1305;
+    return dst;
+}
+
+static size_t poly1305_size(void)
+{
+    return POLY1305_DIGEST_SIZE;
+}
+
+static int poly1305_init(void *vmacctx)
+{
+    /* initialize the context in MAC_ctrl function */
+    return 1;
+}
+
+static int poly1305_update(void *vmacctx, const unsigned char *data,
+                       size_t datalen)
+{
+    struct poly1305_data_st *ctx = vmacctx;
+
+    /* poly1305 has nothing to return in its update function */
+    Poly1305_Update(&ctx->poly1305, data, datalen);
+    return 1;
+}
+
+static int poly1305_final(void *vmacctx, unsigned char *out, size_t *outl,
+                          size_t outsize)
+{
+    struct poly1305_data_st *ctx = vmacctx;
+
+    Poly1305_Final(&ctx->poly1305, out);
+    return 1;
+}
+
+static const OSSL_PARAM known_gettable_params[] = {
+    OSSL_PARAM_size_t(OSSL_MAC_PARAM_OUTLEN, NULL),
+    OSSL_PARAM_size_t(OSSL_MAC_PARAM_SIZE, NULL), /* Same as "outlen" */
+    OSSL_PARAM_END
+};
+static const OSSL_PARAM *poly1305_gettable_params(void)
+{
+    return known_gettable_params;
+}
+
+static int poly1305_get_params(OSSL_PARAM params[])
+{
+    OSSL_PARAM *p;
+
+    if ((p = OSSL_PARAM_locate(params, OSSL_MAC_PARAM_OUTLEN)) != NULL
+        || (p = OSSL_PARAM_locate(params, OSSL_MAC_PARAM_SIZE)) != NULL)
+        return OSSL_PARAM_set_size_t(p, poly1305_size());
+
+    return 1;
+}
+
+static const OSSL_PARAM known_settable_ctx_params[] = {
+    OSSL_PARAM_octet_string(OSSL_MAC_PARAM_KEY, NULL, 0),
+    OSSL_PARAM_END
+};
+static const OSSL_PARAM *poly1305_settable_ctx_params(void)
+{
+    return known_settable_ctx_params;
+}
+
+static int poly1305_ctx_set_params(void *vmacctx, const OSSL_PARAM *params)
+{
+    struct poly1305_data_st *ctx = vmacctx;
+    const OSSL_PARAM *p = NULL;
+
+    if ((p = OSSL_PARAM_locate_const(params, OSSL_MAC_PARAM_KEY)) != NULL) {
+        if (p->data_type != OSSL_PARAM_OCTET_STRING
+            || p->data_size != POLY1305_KEY_SIZE) {
+            ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY_LENGTH);
+            return 0;
+        }
+        Poly1305_Init(&ctx->poly1305, p->data);
+    }
+    return 1;
+}
+
+const OSSL_DISPATCH poly1305_functions[] = {
+    { OSSL_FUNC_MAC_NEWCTX, (void (*)(void))poly1305_new },
+    { OSSL_FUNC_MAC_DUPCTX, (void (*)(void))poly1305_dup },
+    { OSSL_FUNC_MAC_FREECTX, (void (*)(void))poly1305_free },
+    { OSSL_FUNC_MAC_INIT, (void (*)(void))poly1305_init },
+    { OSSL_FUNC_MAC_UPDATE, (void (*)(void))poly1305_update },
+    { OSSL_FUNC_MAC_FINAL, (void (*)(void))poly1305_final },
+    { OSSL_FUNC_MAC_GETTABLE_PARAMS, (void (*)(void))poly1305_gettable_params },
+    { OSSL_FUNC_MAC_GET_PARAMS, (void (*)(void))poly1305_get_params },
+    { OSSL_FUNC_MAC_SETTABLE_CTX_PARAMS,
+      (void (*)(void))poly1305_settable_ctx_params },
+    { OSSL_FUNC_MAC_CTX_SET_PARAMS, (void (*)(void))poly1305_ctx_set_params },
+    { 0, NULL }
+};
+
+#endif