/src/openssl34/providers/implementations/ciphers/cipher_chacha20_poly1305.c

Source
/*
 * Copyright 2019-2025 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
 */

/* 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;
static OSSL_FUNC_cipher_settable_ctx_params_fn chacha20_poly1305_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 const OSSL_PARAM chacha20_poly1305_known_settable_ctx_params[] = {
    OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_KEYLEN, NULL),
    OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_IVLEN, NULL),
    OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_AEAD_TAG, NULL, 0),
    OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD, NULL, 0),
    OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_AEAD_TLS1_IV_FIXED, NULL, 0),
    OSSL_PARAM_END
};
static const OSSL_PARAM *chacha20_poly1305_settable_ctx_params(
    ossl_unused void *cctx, ossl_unused void *provctx)
{
    return chacha20_poly1305_known_settable_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 (params == NULL)
        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;
        }
    }
    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: 2025-12-31 06:58

Line	Count	Source
1		/*
2		* Copyright 2019-2025 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
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	143k	#define CHACHA20_POLY1305_KEYLEN CHACHA_KEY_SIZE
18	129k	#define CHACHA20_POLY1305_BLKLEN 1
19	2.22k	#define CHACHA20_POLY1305_MAX_IVLEN 12
20	8.79k	#define CHACHA20_POLY1305_MODE 0
21	129k	#define CHACHA20_POLY1305_FLAGS (PROV_CIPHER_FLAG_AEAD \
22	129k	\| 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		static OSSL_FUNC_cipher_settable_ctx_params_fn chacha20_poly1305_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	8.79k	{
41	8.79k	PROV_CHACHA20_POLY1305_CTX *ctx;
42
43	8.79k	if (!ossl_prov_is_running())
44	0	return NULL;
45
46	8.79k	ctx = OPENSSL_zalloc(sizeof(*ctx));
47	8.79k	if (ctx != NULL) {
48	8.79k	ossl_cipher_generic_initkey(&ctx->base, CHACHA20_POLY1305_KEYLEN * 8,
49	8.79k	CHACHA20_POLY1305_BLKLEN * 8,
50	8.79k	CHACHA20_POLY1305_IVLEN * 8,
51	8.79k	CHACHA20_POLY1305_MODE,
52	8.79k	CHACHA20_POLY1305_FLAGS,
53	8.79k	ossl_prov_cipher_hw_chacha20_poly1305(
54	8.79k	CHACHA20_POLY1305_KEYLEN * 8),
55	8.79k	NULL);
56	8.79k	ctx->tls_payload_length = NO_TLS_PAYLOAD_LENGTH;
57	8.79k	ossl_chacha20_initctx(&ctx->chacha);
58	8.79k	}
59	8.79k	return ctx;
60	8.79k	}
61
62		static void chacha20_poly1305_dupctx(void provctx)
63	0	{
64	0	PROV_CHACHA20_POLY1305_CTX *ctx = provctx;
65	0	PROV_CHACHA20_POLY1305_CTX *dctx = NULL;
66
67	0	if (ctx == NULL)
68	0	return NULL;
69	0	dctx = OPENSSL_memdup(ctx, sizeof(*ctx));
70	0	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	0	return dctx;
79	0	}
80
81		static void chacha20_poly1305_freectx(void *vctx)
82	8.79k	{
83	8.79k	PROV_CHACHA20_POLY1305_CTX ctx = (PROV_CHACHA20_POLY1305_CTX )vctx;
84
85	8.79k	if (ctx != NULL) {
86	8.79k	ossl_cipher_generic_reset_ctx((PROV_CIPHER_CTX *)vctx);
87	8.79k	OPENSSL_clear_free(ctx, sizeof(*ctx));
88	8.79k	}
89	8.79k	}
90
91		static int chacha20_poly1305_get_params(OSSL_PARAM params[])
92	120k	{
93	120k	return ossl_cipher_generic_get_params(params, 0, CHACHA20_POLY1305_FLAGS,
94	120k	CHACHA20_POLY1305_KEYLEN * 8,
95	120k	CHACHA20_POLY1305_BLKLEN * 8,
96	120k	CHACHA20_POLY1305_IVLEN * 8);
97	120k	}
98
99		static int chacha20_poly1305_get_ctx_params(void *vctx, OSSL_PARAM params[])
100	83.8k	{
101	83.8k	PROV_CHACHA20_POLY1305_CTX ctx = (PROV_CHACHA20_POLY1305_CTX )vctx;
102	83.8k	OSSL_PARAM *p;
103
104	83.8k	p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_IVLEN);
105	83.8k	if (p != NULL) {
106	14.0k	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	14.0k	}
111	83.8k	p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_KEYLEN);
112	83.8k	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	83.8k	p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_AEAD_TAGLEN);
117	83.8k	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	83.8k	p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_AEAD_TLS1_AAD_PAD);
122	83.8k	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	83.8k	p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_AEAD_TAG);
128	83.8k	if (p != NULL) {
129	58.5k	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	58.5k	if (!ctx->base.enc) {
134	0	ERR_raise(ERR_LIB_PROV, PROV_R_TAG_NOT_SET);
135	0	return 0;
136	0	}
137	58.5k	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	58.5k	memcpy(p->data, ctx->tag, p->data_size);
142	58.5k	}
143
144	83.8k	return 1;
145	83.8k	}
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(ossl_unused void cctx, ossl_unused void *provctx)
156	64	{
157	64	return chacha20_poly1305_known_gettable_ctx_params;
158	64	}
159
160		static const OSSL_PARAM chacha20_poly1305_known_settable_ctx_params[] = {
161		OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_KEYLEN, NULL),
162		OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_IVLEN, NULL),
163		OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_AEAD_TAG, NULL, 0),
164		OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD, NULL, 0),
165		OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_AEAD_TLS1_IV_FIXED, NULL, 0),
166		OSSL_PARAM_END
167		};
168		static const OSSL_PARAM *chacha20_poly1305_settable_ctx_params(
169		ossl_unused void cctx, ossl_unused void provctx)
170	4	{
171	4	return chacha20_poly1305_known_settable_ctx_params;
172	4	}
173
174		static int chacha20_poly1305_set_ctx_params(void *vctx,
175		const OSSL_PARAM params[])
176	136k	{
177	136k	const OSSL_PARAM *p;
178	136k	size_t len;
179	136k	PROV_CHACHA20_POLY1305_CTX ctx = (PROV_CHACHA20_POLY1305_CTX )vctx;
180	136k	PROV_CIPHER_HW_CHACHA20_POLY1305 hw = (PROV_CIPHER_HW_CHACHA20_POLY1305 )ctx->base.hw;
181
182	136k	if (params == NULL)
183	90.0k	return 1;
184
185	46.1k	p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_KEYLEN);
186	46.1k	if (p != NULL) {
187	0	if (!OSSL_PARAM_get_size_t(p, &len)) {
188	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
189	0	return 0;
190	0	}
191	0	if (len != CHACHA20_POLY1305_KEYLEN) {
192	0	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY_LENGTH);
193	0	return 0;
194	0	}
195	0	}
196	46.1k	p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_IVLEN);
197	46.1k	if (p != NULL) {
198	2.22k	if (!OSSL_PARAM_get_size_t(p, &len)) {
199	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
200	0	return 0;
201	0	}
202	2.22k	if (len != CHACHA20_POLY1305_MAX_IVLEN) {
203	0	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IV_LENGTH);
204	0	return 0;
205	0	}
206	2.22k	}
207
208	46.1k	p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_AEAD_TAG);
209	46.1k	if (p != NULL) {
210	38.2k	if (p->data_type != OSSL_PARAM_OCTET_STRING) {
211	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
212	0	return 0;
213	0	}
214	38.2k	if (p->data_size == 0 \|\| p->data_size > POLY1305_BLOCK_SIZE) {
215	0	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_TAG_LENGTH);
216	0	return 0;
217	0	}
218	38.2k	if (p->data != NULL) {
219	38.2k	if (ctx->base.enc) {
220	0	ERR_raise(ERR_LIB_PROV, PROV_R_TAG_NOT_NEEDED);
221	0	return 0;
222	0	}
223	38.2k	memcpy(ctx->tag, p->data, p->data_size);
224	38.2k	}
225	38.2k	ctx->tag_len = p->data_size;
226	38.2k	}
227
228	46.1k	p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_AEAD_TLS1_AAD);
229	46.1k	if (p != NULL) {
230	5.45k	if (p->data_type != OSSL_PARAM_OCTET_STRING) {
231	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
232	0	return 0;
233	0	}
234	5.45k	len = hw->tls_init(&ctx->base, p->data, p->data_size);
235	5.45k	if (len == 0) {
236	9	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_DATA);
237	9	return 0;
238	9	}
239	5.44k	ctx->tls_aad_pad_sz = len;
240	5.44k	}
241
242	46.1k	p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_AEAD_TLS1_IV_FIXED);
243	46.1k	if (p != NULL) {
244	0	if (p->data_type != OSSL_PARAM_OCTET_STRING) {
245	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
246	0	return 0;
247	0	}
248	0	if (hw->tls_iv_set_fixed(&ctx->base, p->data, p->data_size) == 0) {
249	0	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IV_LENGTH);
250	0	return 0;
251	0	}
252	0	}
253	46.1k	return 1;
254	46.1k	}
255
256		static int chacha20_poly1305_einit(void vctx, const unsigned char key,
257		size_t keylen, const unsigned char *iv,
258		size_t ivlen, const OSSL_PARAM params[])
259	99.4k	{
260	99.4k	int ret;
261
262		/* The generic function checks for ossl_prov_is_running() */
263	99.4k	ret = ossl_cipher_generic_einit(vctx, key, keylen, iv, ivlen, NULL);
264	99.4k	if (ret && iv != NULL) {
265	93.9k	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
266	93.9k	PROV_CIPHER_HW_CHACHA20_POLY1305 hw = (PROV_CIPHER_HW_CHACHA20_POLY1305 )ctx->hw;
267
268	93.9k	hw->initiv(ctx);
269	93.9k	}
270	99.4k	if (ret && !chacha20_poly1305_set_ctx_params(vctx, params))
271	0	ret = 0;
272	99.4k	return ret;
273	99.4k	}
274
275		static int chacha20_poly1305_dinit(void vctx, const unsigned char key,
276		size_t keylen, const unsigned char *iv,
277		size_t ivlen, const OSSL_PARAM params[])
278	84.0k	{
279	84.0k	int ret;
280
281		/* The generic function checks for ossl_prov_is_running() */
282	84.0k	ret = ossl_cipher_generic_dinit(vctx, key, keylen, iv, ivlen, NULL);
283	84.0k	if (ret && iv != NULL) {
284	80.6k	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
285	80.6k	PROV_CIPHER_HW_CHACHA20_POLY1305 hw = (PROV_CIPHER_HW_CHACHA20_POLY1305 )ctx->hw;
286
287	80.6k	hw->initiv(ctx);
288	80.6k	}
289	84.0k	if (ret && !chacha20_poly1305_set_ctx_params(vctx, params))
290	0	ret = 0;
291	84.0k	return ret;
292	84.0k	}
293
294		static int chacha20_poly1305_cipher(void vctx, unsigned char out,
295		size_t *outl, size_t outsize,
296		const unsigned char *in, size_t inl)
297	348k	{
298	348k	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
299	348k	PROV_CIPHER_HW_CHACHA20_POLY1305 hw = (PROV_CIPHER_HW_CHACHA20_POLY1305 )ctx->hw;
300
301	348k	if (!ossl_prov_is_running())
302	0	return 0;
303
304	348k	if (inl == 0) {
305	0	*outl = 0;
306	0	return 1;
307	0	}
308
309	348k	if (outsize < inl) {
310	0	ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
311	0	return 0;
312	0	}
313
314	348k	if (!hw->aead_cipher(ctx, out, outl, in, inl))
315	6.98k	return 0;
316
317	341k	return 1;
318	348k	}
319
320		static int chacha20_poly1305_final(void vctx, unsigned char out, size_t *outl,
321		size_t outsize)
322	131k	{
323	131k	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
324	131k	PROV_CIPHER_HW_CHACHA20_POLY1305 hw = (PROV_CIPHER_HW_CHACHA20_POLY1305 )ctx->hw;
325
326	131k	if (!ossl_prov_is_running())
327	0	return 0;
328
329	131k	if (hw->aead_cipher(ctx, out, outl, NULL, 0) <= 0)
330	66.5k	return 0;
331
332	65.2k	*outl = 0;
333	65.2k	return 1;
334	131k	}
335
336		/* ossl_chacha20_ossl_poly1305_functions */
337		const OSSL_DISPATCH ossl_chacha20_ossl_poly1305_functions[] = {
338		{ OSSL_FUNC_CIPHER_NEWCTX, (void (*)(void))chacha20_poly1305_newctx },
339		{ OSSL_FUNC_CIPHER_FREECTX, (void (*)(void))chacha20_poly1305_freectx },
340		{ OSSL_FUNC_CIPHER_DUPCTX, (void (*)(void))chacha20_poly1305_dupctx },
341		{ OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void))chacha20_poly1305_einit },
342		{ OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void))chacha20_poly1305_dinit },
343		{ OSSL_FUNC_CIPHER_UPDATE, (void (*)(void))chacha20_poly1305_update },
344		{ OSSL_FUNC_CIPHER_FINAL, (void (*)(void))chacha20_poly1305_final },
345		{ OSSL_FUNC_CIPHER_CIPHER, (void (*)(void))chacha20_poly1305_cipher },
346		{ OSSL_FUNC_CIPHER_GET_PARAMS,
347		(void (*)(void))chacha20_poly1305_get_params },
348		{ OSSL_FUNC_CIPHER_GETTABLE_PARAMS,
349		(void (*)(void))chacha20_poly1305_gettable_params },
350		{ OSSL_FUNC_CIPHER_GET_CTX_PARAMS,
351		(void (*)(void))chacha20_poly1305_get_ctx_params },
352		{ OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS,
353		(void (*)(void))chacha20_poly1305_gettable_ctx_params },
354		{ OSSL_FUNC_CIPHER_SET_CTX_PARAMS,
355		(void (*)(void))chacha20_poly1305_set_ctx_params },
356		{ OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,
357		(void (*)(void))chacha20_poly1305_settable_ctx_params },
358		OSSL_DISPATCH_END
359		};