/src/openssl/providers/implementations/ciphers/cipher_chacha20_poly1305.c

Source (jump to first uncovered line)
/*
 * Copyright 2019-2023 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
 */

/* Dispatch functions for chacha20_poly1305 cipher */

#include <openssl/proverr.h>
#include "cipher_chacha20_poly1305.h"
#include "prov/implementations.h"
#include "prov/providercommon.h"

#define CHACHA20_POLY1305_KEYLEN CHACHA_KEY_SIZE
#define CHACHA20_POLY1305_BLKLEN 1
#define CHACHA20_POLY1305_MAX_IVLEN 12
#define CHACHA20_POLY1305_MODE 0
#define CHACHA20_POLY1305_FLAGS (PROV_CIPHER_FLAG_AEAD                         \
                                 | PROV_CIPHER_FLAG_CUSTOM_IV)

static OSSL_FUNC_cipher_newctx_fn chacha20_poly1305_newctx;
static OSSL_FUNC_cipher_freectx_fn chacha20_poly1305_freectx;
static OSSL_FUNC_cipher_dupctx_fn chacha20_poly1305_dupctx;
static OSSL_FUNC_cipher_encrypt_init_fn chacha20_poly1305_einit;
static OSSL_FUNC_cipher_decrypt_init_fn chacha20_poly1305_dinit;
static OSSL_FUNC_cipher_get_params_fn chacha20_poly1305_get_params;
static OSSL_FUNC_cipher_get_ctx_params_fn chacha20_poly1305_get_ctx_params;
static OSSL_FUNC_cipher_set_ctx_params_fn chacha20_poly1305_set_ctx_params;
static OSSL_FUNC_cipher_cipher_fn chacha20_poly1305_cipher;
static OSSL_FUNC_cipher_final_fn chacha20_poly1305_final;
static OSSL_FUNC_cipher_gettable_ctx_params_fn chacha20_poly1305_gettable_ctx_params;
#define chacha20_poly1305_settable_ctx_params ossl_cipher_aead_settable_ctx_params
#define chacha20_poly1305_gettable_params ossl_cipher_generic_gettable_params
#define chacha20_poly1305_update chacha20_poly1305_cipher

static void *chacha20_poly1305_newctx(void *provctx)
{
    PROV_CHACHA20_POLY1305_CTX *ctx;

    if (!ossl_prov_is_running())
        return NULL;

    ctx = OPENSSL_zalloc(sizeof(*ctx));
    if (ctx != NULL) {
        ossl_cipher_generic_initkey(&ctx->base, CHACHA20_POLY1305_KEYLEN * 8,
                                    CHACHA20_POLY1305_BLKLEN * 8,
                                    CHACHA20_POLY1305_IVLEN * 8,
                                    CHACHA20_POLY1305_MODE,
                                    CHACHA20_POLY1305_FLAGS,
                                    ossl_prov_cipher_hw_chacha20_poly1305(
                                        CHACHA20_POLY1305_KEYLEN * 8),
                                    NULL);
        ctx->tls_payload_length = NO_TLS_PAYLOAD_LENGTH;
        ossl_chacha20_initctx(&ctx->chacha);
    }
    return ctx;
}

static void *chacha20_poly1305_dupctx(void *provctx)
{
    PROV_CHACHA20_POLY1305_CTX *ctx = provctx;
    PROV_CHACHA20_POLY1305_CTX *dctx = NULL;

    if (ctx == NULL)
        return NULL;
    dctx = OPENSSL_memdup(ctx, sizeof(*ctx));
    if (dctx != NULL && dctx->base.tlsmac != NULL && dctx->base.alloced) {
        dctx->base.tlsmac = OPENSSL_memdup(dctx->base.tlsmac,
                                           dctx->base.tlsmacsize);
        if (dctx->base.tlsmac == NULL) {
            OPENSSL_free(dctx);
            dctx = NULL;
        }
    }
    return dctx;
}

static void chacha20_poly1305_freectx(void *vctx)
{
    PROV_CHACHA20_POLY1305_CTX *ctx = (PROV_CHACHA20_POLY1305_CTX *)vctx;

    if (ctx != NULL) {
        ossl_cipher_generic_reset_ctx((PROV_CIPHER_CTX *)vctx);
        OPENSSL_clear_free(ctx, sizeof(*ctx));
    }
}

static int chacha20_poly1305_get_params(OSSL_PARAM params[])
{
    return ossl_cipher_generic_get_params(params, 0, CHACHA20_POLY1305_FLAGS,
                                          CHACHA20_POLY1305_KEYLEN * 8,
                                          CHACHA20_POLY1305_BLKLEN * 8,
                                          CHACHA20_POLY1305_IVLEN * 8);
}

static int chacha20_poly1305_get_ctx_params(void *vctx, OSSL_PARAM params[])
{
    PROV_CHACHA20_POLY1305_CTX *ctx = (PROV_CHACHA20_POLY1305_CTX *)vctx;
    OSSL_PARAM *p;

    p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_IVLEN);
    if (p != NULL) {
        if (!OSSL_PARAM_set_size_t(p, CHACHA20_POLY1305_IVLEN)) {
            ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
            return 0;
        }
    }
    p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_KEYLEN);
    if (p != NULL && !OSSL_PARAM_set_size_t(p, CHACHA20_POLY1305_KEYLEN)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }
    p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_AEAD_TAGLEN);
    if (p != NULL && !OSSL_PARAM_set_size_t(p, ctx->tag_len)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }
    p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_AEAD_TLS1_AAD_PAD);
    if (p != NULL && !OSSL_PARAM_set_size_t(p, ctx->tls_aad_pad_sz)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }

    p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_AEAD_TAG);
    if (p != NULL) {
        if (p->data_type != OSSL_PARAM_OCTET_STRING) {
            ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
            return 0;
        }
        if (!ctx->base.enc) {
            ERR_raise(ERR_LIB_PROV, PROV_R_TAG_NOT_SET);
            return 0;
        }
        if (p->data_size == 0 || p->data_size > POLY1305_BLOCK_SIZE) {
            ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_TAG_LENGTH);
            return 0;
        }
        memcpy(p->data, ctx->tag, p->data_size);
    }

    return 1;
}

static const OSSL_PARAM chacha20_poly1305_known_gettable_ctx_params[] = {
    OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_KEYLEN, NULL),
    OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_IVLEN, NULL),
    OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_AEAD_TAGLEN, NULL),
    OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_AEAD_TAG, NULL, 0),
    OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD_PAD, NULL),
    OSSL_PARAM_END
};
static const OSSL_PARAM *chacha20_poly1305_gettable_ctx_params
    (ossl_unused void *cctx, ossl_unused void *provctx)
{
    return chacha20_poly1305_known_gettable_ctx_params;
}

static int chacha20_poly1305_set_ctx_params(void *vctx,
                                            const OSSL_PARAM params[])
{
    const OSSL_PARAM *p;
    size_t len;
    PROV_CHACHA20_POLY1305_CTX *ctx = (PROV_CHACHA20_POLY1305_CTX *)vctx;
    PROV_CIPHER_HW_CHACHA20_POLY1305 *hw =
        (PROV_CIPHER_HW_CHACHA20_POLY1305 *)ctx->base.hw;

    if (ossl_param_is_empty(params))
        return 1;

    p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_KEYLEN);
    if (p != NULL) {
        if (!OSSL_PARAM_get_size_t(p, &len)) {
            ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
            return 0;
        }
        if (len != CHACHA20_POLY1305_KEYLEN) {
            ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY_LENGTH);
            return 0;
        }
    }
    p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_IVLEN);
    if (p != NULL) {
        if (!OSSL_PARAM_get_size_t(p, &len)) {
            ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
            return 0;
        }
        if (len != CHACHA20_POLY1305_MAX_IVLEN) {
            ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IV_LENGTH);
            return 0;
        }
    }

    p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_AEAD_TAG);
    if (p != NULL) {
        if (p->data_type != OSSL_PARAM_OCTET_STRING) {
            ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
            return 0;
        }
        if (p->data_size == 0 || p->data_size > POLY1305_BLOCK_SIZE) {
            ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_TAG_LENGTH);
            return 0;
        }
        if (p->data != NULL) {
            if (ctx->base.enc) {
                ERR_raise(ERR_LIB_PROV, PROV_R_TAG_NOT_NEEDED);
                return 0;
            }
            memcpy(ctx->tag, p->data, p->data_size);
        }
        ctx->tag_len = p->data_size;
    }

    p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_AEAD_TLS1_AAD);
    if (p != NULL) {
        if (p->data_type != OSSL_PARAM_OCTET_STRING) {
            ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
            return 0;
        }
        len = hw->tls_init(&ctx->base, p->data, p->data_size);
        if (len == 0) {
            ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_DATA);
            return 0;
        }
        ctx->tls_aad_pad_sz = len;
    }

    p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_AEAD_TLS1_IV_FIXED);
    if (p != NULL) {
        if (p->data_type != OSSL_PARAM_OCTET_STRING) {
            ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
            return 0;
        }
        if (hw->tls_iv_set_fixed(&ctx->base, p->data, p->data_size) == 0) {
            ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IV_LENGTH);
            return 0;
        }
    }
    /* ignore OSSL_CIPHER_PARAM_AEAD_MAC_KEY */
    return 1;
}

static int chacha20_poly1305_einit(void *vctx, const unsigned char *key,
                                  size_t keylen, const unsigned char *iv,
                                  size_t ivlen, const OSSL_PARAM params[])
{
    int ret;

    /* The generic function checks for ossl_prov_is_running() */
    ret = ossl_cipher_generic_einit(vctx, key, keylen, iv, ivlen, NULL);
    if (ret && iv != NULL) {
        PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
        PROV_CIPHER_HW_CHACHA20_POLY1305 *hw =
            (PROV_CIPHER_HW_CHACHA20_POLY1305 *)ctx->hw;

        hw->initiv(ctx);
    }
    if (ret && !chacha20_poly1305_set_ctx_params(vctx, params))
        ret = 0;
    return ret;
}

static int chacha20_poly1305_dinit(void *vctx, const unsigned char *key,
                                  size_t keylen, const unsigned char *iv,
                                  size_t ivlen, const OSSL_PARAM params[])
{
    int ret;

    /* The generic function checks for ossl_prov_is_running() */
    ret = ossl_cipher_generic_dinit(vctx, key, keylen, iv, ivlen, NULL);
    if (ret && iv != NULL) {
        PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
        PROV_CIPHER_HW_CHACHA20_POLY1305 *hw =
            (PROV_CIPHER_HW_CHACHA20_POLY1305 *)ctx->hw;

        hw->initiv(ctx);
    }
    if (ret && !chacha20_poly1305_set_ctx_params(vctx, params))
        ret = 0;
    return ret;
}

static int chacha20_poly1305_cipher(void *vctx, unsigned char *out,
                                    size_t *outl, size_t outsize,
                                    const unsigned char *in, size_t inl)
{
    PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
    PROV_CIPHER_HW_CHACHA20_POLY1305 *hw =
        (PROV_CIPHER_HW_CHACHA20_POLY1305 *)ctx->hw;

    if (!ossl_prov_is_running())
        return 0;

    if (inl == 0) {
        *outl = 0;
        return 1;
    }

    if (outsize < inl) {
        ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
        return 0;
    }

    if (!hw->aead_cipher(ctx, out, outl, in, inl))
        return 0;

    return 1;
}

static int chacha20_poly1305_final(void *vctx, unsigned char *out, size_t *outl,
                                   size_t outsize)
{
    PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
    PROV_CIPHER_HW_CHACHA20_POLY1305 *hw =
        (PROV_CIPHER_HW_CHACHA20_POLY1305 *)ctx->hw;

    if (!ossl_prov_is_running())
        return 0;

    if (hw->aead_cipher(ctx, out, outl, NULL, 0) <= 0)
        return 0;

    *outl = 0;
    return 1;
}

/* ossl_chacha20_ossl_poly1305_functions */
const OSSL_DISPATCH ossl_chacha20_ossl_poly1305_functions[] = {
    { OSSL_FUNC_CIPHER_NEWCTX, (void (*)(void))chacha20_poly1305_newctx },
    { OSSL_FUNC_CIPHER_FREECTX, (void (*)(void))chacha20_poly1305_freectx },
    { OSSL_FUNC_CIPHER_DUPCTX, (void (*)(void))chacha20_poly1305_dupctx },
    { OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void))chacha20_poly1305_einit },
    { OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void))chacha20_poly1305_dinit },
    { OSSL_FUNC_CIPHER_UPDATE, (void (*)(void))chacha20_poly1305_update },
    { OSSL_FUNC_CIPHER_FINAL, (void (*)(void))chacha20_poly1305_final },
    { OSSL_FUNC_CIPHER_CIPHER, (void (*)(void))chacha20_poly1305_cipher },
    { OSSL_FUNC_CIPHER_GET_PARAMS,
        (void (*)(void))chacha20_poly1305_get_params },
    { OSSL_FUNC_CIPHER_GETTABLE_PARAMS,
        (void (*)(void))chacha20_poly1305_gettable_params },
    { OSSL_FUNC_CIPHER_GET_CTX_PARAMS,
         (void (*)(void))chacha20_poly1305_get_ctx_params },
    { OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS,
        (void (*)(void))chacha20_poly1305_gettable_ctx_params },
    { OSSL_FUNC_CIPHER_SET_CTX_PARAMS,
        (void (*)(void))chacha20_poly1305_set_ctx_params },
    { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,
        (void (*)(void))chacha20_poly1305_settable_ctx_params },
    OSSL_DISPATCH_END
};


Coverage Report

Created: 2024-11-21 07:03

Line	Count	Source (jump to first uncovered line)
1		/*
2		* Copyright 2019-2023 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
10		/* Dispatch functions for chacha20_poly1305 cipher */
11
12		#include <openssl/proverr.h>
13		#include "cipher_chacha20_poly1305.h"
14		#include "prov/implementations.h"
15		#include "prov/providercommon.h"
16
17	424	#define CHACHA20_POLY1305_KEYLEN CHACHA_KEY_SIZE
18	147	#define CHACHA20_POLY1305_BLKLEN 1
19	11	#define CHACHA20_POLY1305_MAX_IVLEN 12
20	145	#define CHACHA20_POLY1305_MODE 0
21	147	#define CHACHA20_POLY1305_FLAGS (PROV_CIPHER_FLAG_AEAD \
22	147	\| PROV_CIPHER_FLAG_CUSTOM_IV)
23
24		static OSSL_FUNC_cipher_newctx_fn chacha20_poly1305_newctx;
25		static OSSL_FUNC_cipher_freectx_fn chacha20_poly1305_freectx;
26		static OSSL_FUNC_cipher_dupctx_fn chacha20_poly1305_dupctx;
27		static OSSL_FUNC_cipher_encrypt_init_fn chacha20_poly1305_einit;
28		static OSSL_FUNC_cipher_decrypt_init_fn chacha20_poly1305_dinit;
29		static OSSL_FUNC_cipher_get_params_fn chacha20_poly1305_get_params;
30		static OSSL_FUNC_cipher_get_ctx_params_fn chacha20_poly1305_get_ctx_params;
31		static OSSL_FUNC_cipher_set_ctx_params_fn chacha20_poly1305_set_ctx_params;
32		static OSSL_FUNC_cipher_cipher_fn chacha20_poly1305_cipher;
33		static OSSL_FUNC_cipher_final_fn chacha20_poly1305_final;
34		static OSSL_FUNC_cipher_gettable_ctx_params_fn chacha20_poly1305_gettable_ctx_params;
35		#define chacha20_poly1305_settable_ctx_params ossl_cipher_aead_settable_ctx_params
36		#define chacha20_poly1305_gettable_params ossl_cipher_generic_gettable_params
37		#define chacha20_poly1305_update chacha20_poly1305_cipher
38
39		static void chacha20_poly1305_newctx(void provctx)
40	145	{
41	145	PROV_CHACHA20_POLY1305_CTX *ctx;
42
43	145	if (!ossl_prov_is_running())
44	0	return NULL;
45
46	145	ctx = OPENSSL_zalloc(sizeof(*ctx));
47	145	if (ctx != NULL) {
48	145	ossl_cipher_generic_initkey(&ctx->base, CHACHA20_POLY1305_KEYLEN * 8,
49	145	CHACHA20_POLY1305_BLKLEN * 8,
50	145	CHACHA20_POLY1305_IVLEN * 8,
51	145	CHACHA20_POLY1305_MODE,
52	145	CHACHA20_POLY1305_FLAGS,
53	145	ossl_prov_cipher_hw_chacha20_poly1305(
54	145	CHACHA20_POLY1305_KEYLEN * 8),
55	145	NULL);
56	145	ctx->tls_payload_length = NO_TLS_PAYLOAD_LENGTH;
57	145	ossl_chacha20_initctx(&ctx->chacha);
58	145	}
59	145	return ctx;
60	145	}
61
62		static void chacha20_poly1305_dupctx(void provctx)
63	4.97k	{
64	4.97k	PROV_CHACHA20_POLY1305_CTX *ctx = provctx;
65	4.97k	PROV_CHACHA20_POLY1305_CTX *dctx = NULL;
66
67	4.97k	if (ctx == NULL)
68	0	return NULL;
69	4.97k	dctx = OPENSSL_memdup(ctx, sizeof(*ctx));
70	4.97k	if (dctx != NULL && dctx->base.tlsmac != NULL && dctx->base.alloced) {
71	0	dctx->base.tlsmac = OPENSSL_memdup(dctx->base.tlsmac,
72	0	dctx->base.tlsmacsize);
73	0	if (dctx->base.tlsmac == NULL) {
74	0	OPENSSL_free(dctx);
75	0	dctx = NULL;
76	0	}
77	0	}
78	4.97k	return dctx;
79	4.97k	}
80
81		static void chacha20_poly1305_freectx(void *vctx)
82	5.12k	{
83	5.12k	PROV_CHACHA20_POLY1305_CTX ctx = (PROV_CHACHA20_POLY1305_CTX )vctx;
84
85	5.12k	if (ctx != NULL) {
86	5.12k	ossl_cipher_generic_reset_ctx((PROV_CIPHER_CTX *)vctx);
87	5.12k	OPENSSL_clear_free(ctx, sizeof(*ctx));
88	5.12k	}
89	5.12k	}
90
91		static int chacha20_poly1305_get_params(OSSL_PARAM params[])
92	2	{
93	2	return ossl_cipher_generic_get_params(params, 0, CHACHA20_POLY1305_FLAGS,
94	2	CHACHA20_POLY1305_KEYLEN * 8,
95	2	CHACHA20_POLY1305_BLKLEN * 8,
96	2	CHACHA20_POLY1305_IVLEN * 8);
97	2	}
98
99		static int chacha20_poly1305_get_ctx_params(void *vctx, OSSL_PARAM params[])
100	260	{
101	260	PROV_CHACHA20_POLY1305_CTX ctx = (PROV_CHACHA20_POLY1305_CTX )vctx;
102	260	OSSL_PARAM *p;
103
104	260	p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_IVLEN);
105	260	if (p != NULL) {
106	128	if (!OSSL_PARAM_set_size_t(p, CHACHA20_POLY1305_IVLEN)) {
107	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
108	0	return 0;
109	0	}
110	128	}
111	260	p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_KEYLEN);
112	260	if (p != NULL && !OSSL_PARAM_set_size_t(p, CHACHA20_POLY1305_KEYLEN)) {
113	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
114	0	return 0;
115	0	}
116	260	p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_AEAD_TAGLEN);
117	260	if (p != NULL && !OSSL_PARAM_set_size_t(p, ctx->tag_len)) {
118	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
119	0	return 0;
120	0	}
121	260	p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_AEAD_TLS1_AAD_PAD);
122	260	if (p != NULL && !OSSL_PARAM_set_size_t(p, ctx->tls_aad_pad_sz)) {
123	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
124	0	return 0;
125	0	}
126
127	260	p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_AEAD_TAG);
128	260	if (p != NULL) {
129	0	if (p->data_type != OSSL_PARAM_OCTET_STRING) {
130	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
131	0	return 0;
132	0	}
133	0	if (!ctx->base.enc) {
134	0	ERR_raise(ERR_LIB_PROV, PROV_R_TAG_NOT_SET);
135	0	return 0;
136	0	}
137	0	if (p->data_size == 0 \|\| p->data_size > POLY1305_BLOCK_SIZE) {
138	0	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_TAG_LENGTH);
139	0	return 0;
140	0	}
141	0	memcpy(p->data, ctx->tag, p->data_size);
142	0	}
143
144	260	return 1;
145	260	}
146
147		static const OSSL_PARAM chacha20_poly1305_known_gettable_ctx_params[] = {
148		OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_KEYLEN, NULL),
149		OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_IVLEN, NULL),
150		OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_AEAD_TAGLEN, NULL),
151		OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_AEAD_TAG, NULL, 0),
152		OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD_PAD, NULL),
153		OSSL_PARAM_END
154		};
155		static const OSSL_PARAM *chacha20_poly1305_gettable_ctx_params
156		(ossl_unused void cctx, ossl_unused void provctx)
157	2	{
158	2	return chacha20_poly1305_known_gettable_ctx_params;
159	2	}
160
161		static int chacha20_poly1305_set_ctx_params(void *vctx,
162		const OSSL_PARAM params[])
163	412	{
164	412	const OSSL_PARAM *p;
165	412	size_t len;
166	412	PROV_CHACHA20_POLY1305_CTX ctx = (PROV_CHACHA20_POLY1305_CTX )vctx;
167	412	PROV_CIPHER_HW_CHACHA20_POLY1305 *hw =
168	412	(PROV_CIPHER_HW_CHACHA20_POLY1305 *)ctx->base.hw;
169
170	412	if (ossl_param_is_empty(params))
171	401	return 1;
172
173	11	p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_KEYLEN);
174	11	if (p != NULL) {
175	0	if (!OSSL_PARAM_get_size_t(p, &len)) {
176	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
177	0	return 0;
178	0	}
179	0	if (len != CHACHA20_POLY1305_KEYLEN) {
180	0	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY_LENGTH);
181	0	return 0;
182	0	}
183	0	}
184	11	p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_IVLEN);
185	11	if (p != NULL) {
186	11	if (!OSSL_PARAM_get_size_t(p, &len)) {
187	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
188	0	return 0;
189	0	}
190	11	if (len != CHACHA20_POLY1305_MAX_IVLEN) {
191	11	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IV_LENGTH);
192	11	return 0;
193	11	}
194	11	}
195
196	0	p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_AEAD_TAG);
197	0	if (p != NULL) {
198	0	if (p->data_type != OSSL_PARAM_OCTET_STRING) {
199	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
200	0	return 0;
201	0	}
202	0	if (p->data_size == 0 \|\| p->data_size > POLY1305_BLOCK_SIZE) {
203	0	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_TAG_LENGTH);
204	0	return 0;
205	0	}
206	0	if (p->data != NULL) {
207	0	if (ctx->base.enc) {
208	0	ERR_raise(ERR_LIB_PROV, PROV_R_TAG_NOT_NEEDED);
209	0	return 0;
210	0	}
211	0	memcpy(ctx->tag, p->data, p->data_size);
212	0	}
213	0	ctx->tag_len = p->data_size;
214	0	}
215
216	0	p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_AEAD_TLS1_AAD);
217	0	if (p != NULL) {
218	0	if (p->data_type != OSSL_PARAM_OCTET_STRING) {
219	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
220	0	return 0;
221	0	}
222	0	len = hw->tls_init(&ctx->base, p->data, p->data_size);
223	0	if (len == 0) {
224	0	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_DATA);
225	0	return 0;
226	0	}
227	0	ctx->tls_aad_pad_sz = len;
228	0	}
229
230	0	p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_AEAD_TLS1_IV_FIXED);
231	0	if (p != NULL) {
232	0	if (p->data_type != OSSL_PARAM_OCTET_STRING) {
233	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
234	0	return 0;
235	0	}
236	0	if (hw->tls_iv_set_fixed(&ctx->base, p->data, p->data_size) == 0) {
237	0	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IV_LENGTH);
238	0	return 0;
239	0	}
240	0	}
241		/* ignore OSSL_CIPHER_PARAM_AEAD_MAC_KEY */
242	0	return 1;
243	0	}
244
245		static int chacha20_poly1305_einit(void vctx, const unsigned char key,
246		size_t keylen, const unsigned char *iv,
247		size_t ivlen, const OSSL_PARAM params[])
248	398	{
249	398	int ret;
250
251		/* The generic function checks for ossl_prov_is_running() */
252	398	ret = ossl_cipher_generic_einit(vctx, key, keylen, iv, ivlen, NULL);
253	398	if (ret && iv != NULL) {
254	256	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
255	256	PROV_CIPHER_HW_CHACHA20_POLY1305 *hw =
256	256	(PROV_CIPHER_HW_CHACHA20_POLY1305 *)ctx->hw;
257
258	256	hw->initiv(ctx);
259	256	}
260	398	if (ret && !chacha20_poly1305_set_ctx_params(vctx, params))
261	0	ret = 0;
262	398	return ret;
263	398	}
264
265		static int chacha20_poly1305_dinit(void vctx, const unsigned char key,
266		size_t keylen, const unsigned char *iv,
267		size_t ivlen, const OSSL_PARAM params[])
268	3	{
269	3	int ret;
270
271		/* The generic function checks for ossl_prov_is_running() */
272	3	ret = ossl_cipher_generic_dinit(vctx, key, keylen, iv, ivlen, NULL);
273	3	if (ret && iv != NULL) {
274	0	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
275	0	PROV_CIPHER_HW_CHACHA20_POLY1305 *hw =
276	0	(PROV_CIPHER_HW_CHACHA20_POLY1305 *)ctx->hw;
277
278	0	hw->initiv(ctx);
279	0	}
280	3	if (ret && !chacha20_poly1305_set_ctx_params(vctx, params))
281	0	ret = 0;
282	3	return ret;
283	3	}
284
285		static int chacha20_poly1305_cipher(void vctx, unsigned char out,
286		size_t *outl, size_t outsize,
287		const unsigned char *in, size_t inl)
288	384	{
289	384	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
290	384	PROV_CIPHER_HW_CHACHA20_POLY1305 *hw =
291	384	(PROV_CIPHER_HW_CHACHA20_POLY1305 *)ctx->hw;
292
293	384	if (!ossl_prov_is_running())
294	0	return 0;
295
296	384	if (inl == 0) {
297	0	*outl = 0;
298	0	return 1;
299	0	}
300
301	384	if (outsize < inl) {
302	0	ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
303	0	return 0;
304	0	}
305
306	384	if (!hw->aead_cipher(ctx, out, outl, in, inl))
307	0	return 0;
308
309	384	return 1;
310	384	}
311
312		static int chacha20_poly1305_final(void vctx, unsigned char out, size_t *outl,
313		size_t outsize)
314	0	{
315	0	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
316	0	PROV_CIPHER_HW_CHACHA20_POLY1305 *hw =
317	0	(PROV_CIPHER_HW_CHACHA20_POLY1305 *)ctx->hw;
318
319	0	if (!ossl_prov_is_running())
320	0	return 0;
321
322	0	if (hw->aead_cipher(ctx, out, outl, NULL, 0) <= 0)
323	0	return 0;
324
325	0	*outl = 0;
326	0	return 1;
327	0	}
328
329		/* ossl_chacha20_ossl_poly1305_functions */
330		const OSSL_DISPATCH ossl_chacha20_ossl_poly1305_functions[] = {
331		{ OSSL_FUNC_CIPHER_NEWCTX, (void (*)(void))chacha20_poly1305_newctx },
332		{ OSSL_FUNC_CIPHER_FREECTX, (void (*)(void))chacha20_poly1305_freectx },
333		{ OSSL_FUNC_CIPHER_DUPCTX, (void (*)(void))chacha20_poly1305_dupctx },
334		{ OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void))chacha20_poly1305_einit },
335		{ OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void))chacha20_poly1305_dinit },
336		{ OSSL_FUNC_CIPHER_UPDATE, (void (*)(void))chacha20_poly1305_update },
337		{ OSSL_FUNC_CIPHER_FINAL, (void (*)(void))chacha20_poly1305_final },
338		{ OSSL_FUNC_CIPHER_CIPHER, (void (*)(void))chacha20_poly1305_cipher },
339		{ OSSL_FUNC_CIPHER_GET_PARAMS,
340		(void (*)(void))chacha20_poly1305_get_params },
341		{ OSSL_FUNC_CIPHER_GETTABLE_PARAMS,
342		(void (*)(void))chacha20_poly1305_gettable_params },
343		{ OSSL_FUNC_CIPHER_GET_CTX_PARAMS,
344		(void (*)(void))chacha20_poly1305_get_ctx_params },
345		{ OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS,
346		(void (*)(void))chacha20_poly1305_gettable_ctx_params },
347		{ OSSL_FUNC_CIPHER_SET_CTX_PARAMS,
348		(void (*)(void))chacha20_poly1305_set_ctx_params },
349		{ OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,
350		(void (*)(void))chacha20_poly1305_settable_ctx_params },
351		OSSL_DISPATCH_END
352		};
353