/src/openssl36/providers/implementations/macs/gmac_prov.c

Source
/*
 * Copyright 2018-2025 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
 */
/* clang-format off */

/* clang-format on */

#include <stdlib.h>
#include <string.h>
#include <openssl/core_dispatch.h>
#include <openssl/core_names.h>
#include <openssl/params.h>
#include <openssl/evp.h>
#include <openssl/err.h>
#include <openssl/proverr.h>

#include "internal/cryptlib.h"
#include "prov/implementations.h"
#include "prov/provider_ctx.h"
#include "prov/provider_util.h"
#include "prov/providercommon.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_FUNC_mac_newctx_fn gmac_new;
static OSSL_FUNC_mac_dupctx_fn gmac_dup;
static OSSL_FUNC_mac_freectx_fn gmac_free;
static OSSL_FUNC_mac_gettable_params_fn gmac_gettable_params;
static OSSL_FUNC_mac_get_params_fn gmac_get_params;
static OSSL_FUNC_mac_settable_ctx_params_fn gmac_settable_ctx_params;
static OSSL_FUNC_mac_set_ctx_params_fn gmac_set_ctx_params;
static OSSL_FUNC_mac_init_fn gmac_init;
static OSSL_FUNC_mac_update_fn gmac_update;
static OSSL_FUNC_mac_final_fn gmac_final;

/* local GMAC pkey structure */

struct gmac_data_st {
    void *provctx;
    EVP_CIPHER_CTX *ctx; /* Cipher context */
    PROV_CIPHER cipher;
};

static void gmac_free(void *vmacctx)
{
    struct gmac_data_st *macctx = vmacctx;

    if (macctx != NULL) {
        EVP_CIPHER_CTX_free(macctx->ctx);
        ossl_prov_cipher_reset(&macctx->cipher);
        OPENSSL_free(macctx);
    }
}

static void *gmac_new(void *provctx)
{
    struct gmac_data_st *macctx;

    if (!ossl_prov_is_running())
        return NULL;

    if ((macctx = OPENSSL_zalloc(sizeof(*macctx))) == NULL
        || (macctx->ctx = EVP_CIPHER_CTX_new()) == NULL) {
        gmac_free(macctx);
        return NULL;
    }
    macctx->provctx = provctx;

    return macctx;
}

static void *gmac_dup(void *vsrc)
{
    struct gmac_data_st *src = vsrc;
    struct gmac_data_st *dst;

    if (!ossl_prov_is_running())
        return NULL;

    dst = gmac_new(src->provctx);
    if (dst == NULL)
        return NULL;

    if (!EVP_CIPHER_CTX_copy(dst->ctx, src->ctx)
        || !ossl_prov_cipher_copy(&dst->cipher, &src->cipher)) {
        gmac_free(dst);
        return NULL;
    }
    return dst;
}

static size_t gmac_size(void)
{
    return EVP_GCM_TLS_TAG_LEN;
}

static int gmac_setkey(struct gmac_data_st *macctx,
    const unsigned char *key, size_t keylen)
{
    EVP_CIPHER_CTX *ctx = macctx->ctx;

    if (keylen != (size_t)EVP_CIPHER_CTX_get_key_length(ctx)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY_LENGTH);
        return 0;
    }
    if (!EVP_EncryptInit_ex(ctx, NULL, NULL, key, NULL))
        return 0;
    return 1;
}

static int gmac_init(void *vmacctx, const unsigned char *key,
    size_t keylen, const OSSL_PARAM params[])
{
    struct gmac_data_st *macctx = vmacctx;

    if (!ossl_prov_is_running() || !gmac_set_ctx_params(macctx, params))
        return 0;
    if (key != NULL)
        return gmac_setkey(macctx, key, keylen);
    return EVP_EncryptInit_ex(macctx->ctx, NULL, NULL, NULL, NULL);
}

static int gmac_update(void *vmacctx, const unsigned char *data,
    size_t datalen)
{
    struct gmac_data_st *macctx = vmacctx;
    EVP_CIPHER_CTX *ctx = macctx->ctx;
    int outlen;

    if (datalen == 0)
        return 1;

    while (datalen > INT_MAX) {
        if (!EVP_EncryptUpdate(ctx, NULL, &outlen, data, INT_MAX))
            return 0;
        data += INT_MAX;
        datalen -= INT_MAX;
    }
    return EVP_EncryptUpdate(ctx, NULL, &outlen, data, (int)datalen);
}

static int gmac_final(void *vmacctx, unsigned char *out, size_t *outl,
    size_t outsize)
{
    OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
    struct gmac_data_st *macctx = vmacctx;
    int hlen = 0;

    if (!ossl_prov_is_running())
        return 0;

    if (!EVP_EncryptFinal_ex(macctx->ctx, out, &hlen))
        return 0;

    hlen = (int)gmac_size();
    params[0] = OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_AEAD_TAG,
        out, (size_t)hlen);
    if (!EVP_CIPHER_CTX_get_params(macctx->ctx, params))
        return 0;

    *outl = hlen;
    return 1;
}

/* clang-format off */
/* Machine generated by util/perl/OpenSSL/paramnames.pm */
#ifndef gmac_get_params_list
static const OSSL_PARAM gmac_get_params_list[] = {
    OSSL_PARAM_size_t(OSSL_MAC_PARAM_SIZE, NULL),
    OSSL_PARAM_END
};
#endif

#ifndef gmac_get_params_st
struct gmac_get_params_st {
    OSSL_PARAM *size;
};
#endif

#ifndef gmac_get_params_decoder
static int gmac_get_params_decoder
    (const OSSL_PARAM *p, struct gmac_get_params_st *r)
{
    const char *s;

    memset(r, 0, sizeof(*r));
    if (p != NULL)
        for (; (s = p->key) != NULL; p++)
            if (ossl_likely(strcmp("size", s + 0) == 0)) {
                /* OSSL_MAC_PARAM_SIZE */
                if (ossl_unlikely(r->size != NULL)) {
                    ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,
                                   "param %s is repeated", s);
                    return 0;
                }
                r->size = (OSSL_PARAM *)p;
            }
    return 1;
}
#endif
/* End of machine generated */
/* clang-format on */

static const OSSL_PARAM *gmac_gettable_params(void *provctx)
{
    return gmac_get_params_list;
}

static int gmac_get_params(OSSL_PARAM params[])
{
    struct gmac_get_params_st p;

    if (!gmac_get_params_decoder(params, &p))
        return 0;

    if (p.size != NULL && !OSSL_PARAM_set_size_t(p.size, gmac_size()))
        return 0;

    return 1;
}

/* clang-format off */
/* Machine generated by util/perl/OpenSSL/paramnames.pm */
#ifndef gmac_set_ctx_params_list
static const OSSL_PARAM gmac_set_ctx_params_list[] = {
    OSSL_PARAM_utf8_string(OSSL_MAC_PARAM_CIPHER, NULL, 0),
    OSSL_PARAM_utf8_string(OSSL_MAC_PARAM_PROPERTIES, NULL, 0),
    OSSL_PARAM_octet_string(OSSL_MAC_PARAM_KEY, NULL, 0),
    OSSL_PARAM_octet_string(OSSL_MAC_PARAM_IV, NULL, 0),
    OSSL_PARAM_END
};
#endif

#ifndef gmac_set_ctx_params_st
struct gmac_set_ctx_params_st {
    OSSL_PARAM *cipher;
    OSSL_PARAM *engine;
    OSSL_PARAM *iv;
    OSSL_PARAM *key;
    OSSL_PARAM *propq;
};
#endif

#ifndef gmac_set_ctx_params_decoder
static int gmac_set_ctx_params_decoder
    (const OSSL_PARAM *p, struct gmac_set_ctx_params_st *r)
{
    const char *s;

    memset(r, 0, sizeof(*r));
    if (p != NULL)
        for (; (s = p->key) != NULL; p++)
            switch(s[0]) {
            default:
                break;
            case 'c':
                if (ossl_likely(strcmp("ipher", s + 1) == 0)) {
                    /* OSSL_MAC_PARAM_CIPHER */
                    if (ossl_unlikely(r->cipher != NULL)) {
                        ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,
                                       "param %s is repeated", s);
                        return 0;
                    }
                    r->cipher = (OSSL_PARAM *)p;
                }
                break;
            case 'e':
                if (ossl_likely(strcmp("ngine", s + 1) == 0)) {
                    /* OSSL_ALG_PARAM_ENGINE */
                    if (ossl_unlikely(r->engine != NULL)) {
                        ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,
                                       "param %s is repeated", s);
                        return 0;
                    }
                    r->engine = (OSSL_PARAM *)p;
                }
                break;
            case 'i':
                if (ossl_likely(strcmp("v", s + 1) == 0)) {
                    /* OSSL_MAC_PARAM_IV */
                    if (ossl_unlikely(r->iv != NULL)) {
                        ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,
                                       "param %s is repeated", s);
                        return 0;
                    }
                    r->iv = (OSSL_PARAM *)p;
                }
                break;
            case 'k':
                if (ossl_likely(strcmp("ey", s + 1) == 0)) {
                    /* OSSL_MAC_PARAM_KEY */
                    if (ossl_unlikely(r->key != NULL)) {
                        ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,
                                       "param %s is repeated", s);
                        return 0;
                    }
                    r->key = (OSSL_PARAM *)p;
                }
                break;
            case 'p':
                if (ossl_likely(strcmp("roperties", s + 1) == 0)) {
                    /* OSSL_MAC_PARAM_PROPERTIES */
                    if (ossl_unlikely(r->propq != NULL)) {
                        ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,
                                       "param %s is repeated", s);
                        return 0;
                    }
                    r->propq = (OSSL_PARAM *)p;
                }
            }
    return 1;
}
#endif
/* End of machine generated */
/* clang-format on */

static const OSSL_PARAM *gmac_settable_ctx_params(ossl_unused void *ctx,
    ossl_unused void *provctx)
{
    return gmac_set_ctx_params_list;
}

/*
 * ALL parameters should be set before init().
 */
static int gmac_set_ctx_params(void *vmacctx, const OSSL_PARAM params[])
{
    struct gmac_data_st *macctx = vmacctx;
    EVP_CIPHER_CTX *ctx;
    OSSL_LIB_CTX *provctx;
    struct gmac_set_ctx_params_st p;

    if (macctx == NULL || !gmac_set_ctx_params_decoder(params, &p))
        return 0;

    if ((ctx = macctx->ctx) == NULL)
        return 0;
    provctx = PROV_LIBCTX_OF(macctx->provctx);

    if (p.cipher != NULL) {
        if (!ossl_prov_cipher_load(&macctx->cipher, p.cipher, p.propq,
                p.engine, provctx))
            return 0;
        if (EVP_CIPHER_get_mode(ossl_prov_cipher_cipher(&macctx->cipher))
            != EVP_CIPH_GCM_MODE) {
            ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_MODE);
            return 0;
        }
        if (!EVP_EncryptInit_ex(ctx, ossl_prov_cipher_cipher(&macctx->cipher),
                ossl_prov_cipher_engine(&macctx->cipher), NULL,
                NULL))
            return 0;
    }

    if (p.key != NULL)
        if (p.key->data_type != OSSL_PARAM_OCTET_STRING
            || !gmac_setkey(macctx, p.key->data, p.key->data_size))
            return 0;

    if (p.iv != NULL) {
        if (p.iv->data_type != OSSL_PARAM_OCTET_STRING)
            return 0;

        if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN,
                (int)p.iv->data_size, NULL)
                <= 0
            || !EVP_EncryptInit_ex(ctx, NULL, NULL, NULL, p.iv->data))
            return 0;
    }
    return 1;
}

const OSSL_DISPATCH ossl_gmac_functions[] = {
    { OSSL_FUNC_MAC_NEWCTX, (void (*)(void))gmac_new },
    { OSSL_FUNC_MAC_DUPCTX, (void (*)(void))gmac_dup },
    { OSSL_FUNC_MAC_FREECTX, (void (*)(void))gmac_free },
    { OSSL_FUNC_MAC_INIT, (void (*)(void))gmac_init },
    { OSSL_FUNC_MAC_UPDATE, (void (*)(void))gmac_update },
    { OSSL_FUNC_MAC_FINAL, (void (*)(void))gmac_final },
    { OSSL_FUNC_MAC_GETTABLE_PARAMS, (void (*)(void))gmac_gettable_params },
    { OSSL_FUNC_MAC_GET_PARAMS, (void (*)(void))gmac_get_params },
    { OSSL_FUNC_MAC_SETTABLE_CTX_PARAMS,
        (void (*)(void))gmac_settable_ctx_params },
    { OSSL_FUNC_MAC_SET_CTX_PARAMS, (void (*)(void))gmac_set_ctx_params },
    OSSL_DISPATCH_END
};

Coverage Report

Created: 2025-12-31 06:58

Line	Count	Source
1		/*
2		* Copyright 2018-2025 The OpenSSL Project Authors. All Rights Reserved.
3		*
4		* Licensed under the Apache License 2.0 (the "License"). You may not use
5		* this file except in compliance with the License. You can obtain a copy
6		* in the file LICENSE in the source distribution or at
7		* https://www.openssl.org/source/license.html
8		*/
9		/* clang-format off */
10
11		/* clang-format on */
12
13		#include <stdlib.h>
14		#include <string.h>
15		#include <openssl/core_dispatch.h>
16		#include <openssl/core_names.h>
17		#include <openssl/params.h>
18		#include <openssl/evp.h>
19		#include <openssl/err.h>
20		#include <openssl/proverr.h>
21
22		#include "internal/cryptlib.h"
23		#include "prov/implementations.h"
24		#include "prov/provider_ctx.h"
25		#include "prov/provider_util.h"
26		#include "prov/providercommon.h"
27
28		/*
29		* Forward declaration of everything implemented here. This is not strictly
30		* necessary for the compiler, but provides an assurance that the signatures
31		* of the functions in the dispatch table are correct.
32		*/
33		static OSSL_FUNC_mac_newctx_fn gmac_new;
34		static OSSL_FUNC_mac_dupctx_fn gmac_dup;
35		static OSSL_FUNC_mac_freectx_fn gmac_free;
36		static OSSL_FUNC_mac_gettable_params_fn gmac_gettable_params;
37		static OSSL_FUNC_mac_get_params_fn gmac_get_params;
38		static OSSL_FUNC_mac_settable_ctx_params_fn gmac_settable_ctx_params;
39		static OSSL_FUNC_mac_set_ctx_params_fn gmac_set_ctx_params;
40		static OSSL_FUNC_mac_init_fn gmac_init;
41		static OSSL_FUNC_mac_update_fn gmac_update;
42		static OSSL_FUNC_mac_final_fn gmac_final;
43
44		/* local GMAC pkey structure */
45
46		struct gmac_data_st {
47		void *provctx;
48		EVP_CIPHER_CTX ctx; / Cipher context */
49		PROV_CIPHER cipher;
50		};
51
52		static void gmac_free(void *vmacctx)
53	212	{
54	212	struct gmac_data_st *macctx = vmacctx;
55
56	212	if (macctx != NULL) {
57	212	EVP_CIPHER_CTX_free(macctx->ctx);
58	212	ossl_prov_cipher_reset(&macctx->cipher);
59	212	OPENSSL_free(macctx);
60	212	}
61	212	}
62
63		static void gmac_new(void provctx)
64	212	{
65	212	struct gmac_data_st *macctx;
66
67	212	if (!ossl_prov_is_running())
68	0	return NULL;
69
70	212	if ((macctx = OPENSSL_zalloc(sizeof(*macctx))) == NULL
71	212	\|\| (macctx->ctx = EVP_CIPHER_CTX_new()) == NULL) {
72	0	gmac_free(macctx);
73	0	return NULL;
74	0	}
75	212	macctx->provctx = provctx;
76
77	212	return macctx;
78	212	}
79
80		static void gmac_dup(void vsrc)
81	0	{
82	0	struct gmac_data_st *src = vsrc;
83	0	struct gmac_data_st *dst;
84
85	0	if (!ossl_prov_is_running())
86	0	return NULL;
87
88	0	dst = gmac_new(src->provctx);
89	0	if (dst == NULL)
90	0	return NULL;
91
92	0	if (!EVP_CIPHER_CTX_copy(dst->ctx, src->ctx)
93	0	\|\| !ossl_prov_cipher_copy(&dst->cipher, &src->cipher)) {
94	0	gmac_free(dst);
95	0	return NULL;
96	0	}
97	0	return dst;
98	0	}
99
100		static size_t gmac_size(void)
101	0	{
102	0	return EVP_GCM_TLS_TAG_LEN;
103	0	}
104
105		static int gmac_setkey(struct gmac_data_st *macctx,
106		const unsigned char *key, size_t keylen)
107	105	{
108	105	EVP_CIPHER_CTX *ctx = macctx->ctx;
109
110	105	if (keylen != (size_t)EVP_CIPHER_CTX_get_key_length(ctx)) {
111	55	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY_LENGTH);
112	55	return 0;
113	55	}
114	50	if (!EVP_EncryptInit_ex(ctx, NULL, NULL, key, NULL))
115	0	return 0;
116	50	return 1;
117	50	}
118
119		static int gmac_init(void vmacctx, const unsigned char key,
120		size_t keylen, const OSSL_PARAM params[])
121	208	{
122	208	struct gmac_data_st *macctx = vmacctx;
123
124	208	if (!ossl_prov_is_running() \|\| !gmac_set_ctx_params(macctx, params))
125	184	return 0;
126	24	if (key != NULL)
127	24	return gmac_setkey(macctx, key, keylen);
128	0	return EVP_EncryptInit_ex(macctx->ctx, NULL, NULL, NULL, NULL);
129	24	}
130
131		static int gmac_update(void vmacctx, const unsigned char data,
132		size_t datalen)
133	0	{
134	0	struct gmac_data_st *macctx = vmacctx;
135	0	EVP_CIPHER_CTX *ctx = macctx->ctx;
136	0	int outlen;
137
138	0	if (datalen == 0)
139	0	return 1;
140
141	0	while (datalen > INT_MAX) {
142	0	if (!EVP_EncryptUpdate(ctx, NULL, &outlen, data, INT_MAX))
143	0	return 0;
144	0	data += INT_MAX;
145	0	datalen -= INT_MAX;
146	0	}
147	0	return EVP_EncryptUpdate(ctx, NULL, &outlen, data, (int)datalen);
148	0	}
149
150		static int gmac_final(void vmacctx, unsigned char out, size_t *outl,
151		size_t outsize)
152	0	{
153	0	OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
154	0	struct gmac_data_st *macctx = vmacctx;
155	0	int hlen = 0;
156
157	0	if (!ossl_prov_is_running())
158	0	return 0;
159
160	0	if (!EVP_EncryptFinal_ex(macctx->ctx, out, &hlen))
161	0	return 0;
162
163	0	hlen = (int)gmac_size();
164	0	params[0] = OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_AEAD_TAG,
165	0	out, (size_t)hlen);
166	0	if (!EVP_CIPHER_CTX_get_params(macctx->ctx, params))
167	0	return 0;
168
169	0	*outl = hlen;
170	0	return 1;
171	0	}
172
173		/* clang-format off */
174		/* Machine generated by util/perl/OpenSSL/paramnames.pm */
175		#ifndef gmac_get_params_list
176		static const OSSL_PARAM gmac_get_params_list[] = {
177		OSSL_PARAM_size_t(OSSL_MAC_PARAM_SIZE, NULL),
178		OSSL_PARAM_END
179		};
180		#endif
181
182		#ifndef gmac_get_params_st
183		struct gmac_get_params_st {
184		OSSL_PARAM *size;
185		};
186		#endif
187
188		#ifndef gmac_get_params_decoder
189		static int gmac_get_params_decoder
190		(const OSSL_PARAM p, struct gmac_get_params_st r)
191	0	{
192	0	const char *s;
193
194	0	memset(r, 0, sizeof(*r));
195	0	if (p != NULL)
196	0	for (; (s = p->key) != NULL; p++)
197	0	if (ossl_likely(strcmp("size", s + 0) == 0)) {
198		/* OSSL_MAC_PARAM_SIZE */
199	0	if (ossl_unlikely(r->size != NULL)) {
200	0	ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,
201	0	"param %s is repeated", s);
202	0	return 0;
203	0	}
204	0	r->size = (OSSL_PARAM *)p;
205	0	}
206	0	return 1;
207	0	}
208		#endif
209		/* End of machine generated */
210		/* clang-format on */
211
212		static const OSSL_PARAM gmac_gettable_params(void provctx)
213	0	{
214	0	return gmac_get_params_list;
215	0	}
216
217		static int gmac_get_params(OSSL_PARAM params[])
218	0	{
219	0	struct gmac_get_params_st p;
220
221	0	if (!gmac_get_params_decoder(params, &p))
222	0	return 0;
223
224	0	if (p.size != NULL && !OSSL_PARAM_set_size_t(p.size, gmac_size()))
225	0	return 0;
226
227	0	return 1;
228	0	}
229
230		/* clang-format off */
231		/* Machine generated by util/perl/OpenSSL/paramnames.pm */
232		#ifndef gmac_set_ctx_params_list
233		static const OSSL_PARAM gmac_set_ctx_params_list[] = {
234		OSSL_PARAM_utf8_string(OSSL_MAC_PARAM_CIPHER, NULL, 0),
235		OSSL_PARAM_utf8_string(OSSL_MAC_PARAM_PROPERTIES, NULL, 0),
236		OSSL_PARAM_octet_string(OSSL_MAC_PARAM_KEY, NULL, 0),
237		OSSL_PARAM_octet_string(OSSL_MAC_PARAM_IV, NULL, 0),
238		OSSL_PARAM_END
239		};
240		#endif
241
242		#ifndef gmac_set_ctx_params_st
243		struct gmac_set_ctx_params_st {
244		OSSL_PARAM *cipher;
245		OSSL_PARAM *engine;
246		OSSL_PARAM *iv;
247		OSSL_PARAM *key;
248		OSSL_PARAM *propq;
249		};
250		#endif
251
252		#ifndef gmac_set_ctx_params_decoder
253		static int gmac_set_ctx_params_decoder
254		(const OSSL_PARAM p, struct gmac_set_ctx_params_st r)
255	45	{
256	45	const char *s;
257
258	45	memset(r, 0, sizeof(*r));
259	45	if (p != NULL)
260	187	for (; (s = p->key) != NULL; p++)
261	147	switch(s[0]) {
262	7	default:
263	7	break;
264	34	case 'c':
265	34	if (ossl_likely(strcmp("ipher", s + 1) == 0)) {
266		/* OSSL_MAC_PARAM_CIPHER */
267	34	if (ossl_unlikely(r->cipher != NULL)) {
268	0	ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,
269	0	"param %s is repeated", s);
270	0	return 0;
271	0	}
272	34	r->cipher = (OSSL_PARAM *)p;
273	34	}
274	34	break;
275	34	case 'e':
276	0	if (ossl_likely(strcmp("ngine", s + 1) == 0)) {
277		/* OSSL_ALG_PARAM_ENGINE */
278	0	if (ossl_unlikely(r->engine != NULL)) {
279	0	ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,
280	0	"param %s is repeated", s);
281	0	return 0;
282	0	}
283	0	r->engine = (OSSL_PARAM *)p;
284	0	}
285	0	break;
286	33	case 'i':
287	33	if (ossl_likely(strcmp("v", s + 1) == 0)) {
288		/* OSSL_MAC_PARAM_IV */
289	33	if (ossl_unlikely(r->iv != NULL)) {
290	0	ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,
291	0	"param %s is repeated", s);
292	0	return 0;
293	0	}
294	33	r->iv = (OSSL_PARAM *)p;
295	33	}
296	33	break;
297	33	case 'k':
298	33	if (ossl_likely(strcmp("ey", s + 1) == 0)) {
299		/* OSSL_MAC_PARAM_KEY */
300	33	if (ossl_unlikely(r->key != NULL)) {
301	0	ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,
302	0	"param %s is repeated", s);
303	0	return 0;
304	0	}
305	33	r->key = (OSSL_PARAM *)p;
306	33	}
307	33	break;
308	40	case 'p':
309	40	if (ossl_likely(strcmp("roperties", s + 1) == 0)) {
310		/* OSSL_MAC_PARAM_PROPERTIES */
311	40	if (ossl_unlikely(r->propq != NULL)) {
312	0	ERR_raise_data(ERR_LIB_PROV, PROV_R_REPEATED_PARAMETER,
313	0	"param %s is repeated", s);
314	0	return 0;
315	0	}
316	40	r->propq = (OSSL_PARAM *)p;
317	40	}
318	147	}
319	45	return 1;
320	45	}
321		#endif
322		/* End of machine generated */
323		/* clang-format on */
324
325		static const OSSL_PARAM gmac_settable_ctx_params(ossl_unused void ctx,
326		ossl_unused void *provctx)
327	198	{
328	198	return gmac_set_ctx_params_list;
329	198	}
330
331		/*
332		* ALL parameters should be set before init().
333		*/
334		static int gmac_set_ctx_params(void *vmacctx, const OSSL_PARAM params[])
335	125	{
336	125	struct gmac_data_st *macctx = vmacctx;
337	125	EVP_CIPHER_CTX *ctx;
338	125	OSSL_LIB_CTX *provctx;
339	125	struct gmac_set_ctx_params_st p;
340
341	125	if (macctx == NULL \|\| !gmac_set_ctx_params_decoder(params, &p))
342	0	return 0;
343
344	125	if ((ctx = macctx->ctx) == NULL)
345	0	return 0;
346	125	provctx = PROV_LIBCTX_OF(macctx->provctx);
347
348	125	if (p.cipher != NULL) {
349	114	if (!ossl_prov_cipher_load(&macctx->cipher, p.cipher, p.propq,
350	114	p.engine, provctx))
351	72	return 0;
352	42	if (EVP_CIPHER_get_mode(ossl_prov_cipher_cipher(&macctx->cipher))
353	42	!= EVP_CIPH_GCM_MODE) {
354	5	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_MODE);
355	5	return 0;
356	5	}
357	37	if (!EVP_EncryptInit_ex(ctx, ossl_prov_cipher_cipher(&macctx->cipher),
358	37	ossl_prov_cipher_engine(&macctx->cipher), NULL,
359	37	NULL))
360	0	return 0;
361	37	}
362
363	48	if (p.key != NULL)
364	37	if (p.key->data_type != OSSL_PARAM_OCTET_STRING
365	37	\|\| !gmac_setkey(macctx, p.key->data, p.key->data_size))
366	13	return 0;
367
368	35	if (p.iv != NULL) {
369	24	if (p.iv->data_type != OSSL_PARAM_OCTET_STRING)
370	0	return 0;
371
372	24	if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN,
373	24	(int)p.iv->data_size, NULL)
374	24	<= 0
375	8	\|\| !EVP_EncryptInit_ex(ctx, NULL, NULL, NULL, p.iv->data))
376	16	return 0;
377	24	}
378	19	return 1;
379	35	}
380
381		const OSSL_DISPATCH ossl_gmac_functions[] = {
382		{ OSSL_FUNC_MAC_NEWCTX, (void (*)(void))gmac_new },
383		{ OSSL_FUNC_MAC_DUPCTX, (void (*)(void))gmac_dup },
384		{ OSSL_FUNC_MAC_FREECTX, (void (*)(void))gmac_free },
385		{ OSSL_FUNC_MAC_INIT, (void (*)(void))gmac_init },
386		{ OSSL_FUNC_MAC_UPDATE, (void (*)(void))gmac_update },
387		{ OSSL_FUNC_MAC_FINAL, (void (*)(void))gmac_final },
388		{ OSSL_FUNC_MAC_GETTABLE_PARAMS, (void (*)(void))gmac_gettable_params },
389		{ OSSL_FUNC_MAC_GET_PARAMS, (void (*)(void))gmac_get_params },
390		{ OSSL_FUNC_MAC_SETTABLE_CTX_PARAMS,
391		(void (*)(void))gmac_settable_ctx_params },
392		{ OSSL_FUNC_MAC_SET_CTX_PARAMS, (void (*)(void))gmac_set_ctx_params },
393		OSSL_DISPATCH_END
394		};