/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 <string.h>
#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);
}

/* Machine generated by util/perl/OpenSSL/paramnames.pm */
#ifndef chacha20_poly1305_get_ctx_params_list
static const OSSL_PARAM chacha20_poly1305_get_ctx_params_list[] = {
    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
};
#endif

#ifndef chacha20_poly1305_get_ctx_params_st
struct chacha20_poly1305_get_ctx_params_st {
    OSSL_PARAM *ivlen;
    OSSL_PARAM *keylen;
    OSSL_PARAM *pad;
    OSSL_PARAM *tag;
    OSSL_PARAM *taglen;
};
#endif

#ifndef chacha20_poly1305_get_ctx_params_decoder
static struct chacha20_poly1305_get_ctx_params_st chacha20_poly1305_get_ctx_params_decoder(const OSSL_PARAM params[]) {
    struct chacha20_poly1305_get_ctx_params_st r;
    const OSSL_PARAM *p;
    const char *s;

    memset(&r, 0, sizeof(r));
    for (p = params; (s = p->key) != NULL; p++)
        switch(s[0]) {
        default:
            break;
        case 'i':
            if (ossl_likely(r.ivlen == NULL && strcmp("vlen", s + 1) == 0))
                r.ivlen = (OSSL_PARAM *)p;
            break;
        case 'k':
            if (ossl_likely(r.keylen == NULL && strcmp("eylen", s + 1) == 0))
                r.keylen = (OSSL_PARAM *)p;
            break;
        case 't':
            switch(s[1]) {
            default:
                break;
            case 'a':
                switch(s[2]) {
                default:
                    break;
                case 'g':
                    switch(s[3]) {
                    default:
                        break;
                    case 'l':
                        if (ossl_likely(r.taglen == NULL && strcmp("en", s + 4) == 0))
                            r.taglen = (OSSL_PARAM *)p;
                        break;
                    case '\0':
                        r.tag = ossl_likely(r.tag == NULL) ? (OSSL_PARAM *)p : r.tag;
                    }
                }
                break;
            case 'l':
                if (ossl_likely(r.pad == NULL && strcmp("saadpad", s + 2) == 0))
                    r.pad = (OSSL_PARAM *)p;
            }
        }
    return r;
}
#endif
/* End of machine generated */

static int chacha20_poly1305_get_ctx_params(void *vctx, OSSL_PARAM params[])
{
    PROV_CHACHA20_POLY1305_CTX *ctx = (PROV_CHACHA20_POLY1305_CTX *)vctx;
    struct chacha20_poly1305_get_ctx_params_st p;

    p = chacha20_poly1305_get_ctx_params_decoder(params);

    if (p.ivlen != NULL
            && !OSSL_PARAM_set_size_t(p.ivlen, CHACHA20_POLY1305_IVLEN)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }

    if (p.keylen != NULL
            && !OSSL_PARAM_set_size_t(p.keylen, CHACHA20_POLY1305_KEYLEN)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }

    if (p.taglen != NULL
            && !OSSL_PARAM_set_size_t(p.taglen, ctx->tag_len)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }

    if (p.pad != NULL
            && !OSSL_PARAM_set_size_t(p.pad, ctx->tls_aad_pad_sz)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
        return 0;
    }

    if (p.tag != NULL) {
        if (p.tag->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.tag->data_size == 0 || p.tag->data_size > POLY1305_BLOCK_SIZE) {
            ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_TAG_LENGTH);
            return 0;
        }
        memcpy(p.tag->data, ctx->tag, p.tag->data_size);
    }
    return 1;
}

static const OSSL_PARAM *chacha20_poly1305_gettable_ctx_params
    (ossl_unused void *cctx, ossl_unused void *provctx)
{
    return chacha20_poly1305_get_ctx_params_list;
}

/* Machine generated by util/perl/OpenSSL/paramnames.pm */
#ifndef chacha20_poly1305_set_ctx_params_list
static const OSSL_PARAM chacha20_poly1305_set_ctx_params_list[] = {
    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
};
#endif

#ifndef chacha20_poly1305_set_ctx_params_st
struct chacha20_poly1305_set_ctx_params_st {
    OSSL_PARAM *aad;
    OSSL_PARAM *fixed;
    OSSL_PARAM *ivlen;
    OSSL_PARAM *keylen;
    OSSL_PARAM *tag;
};
#endif

#ifndef chacha20_poly1305_set_ctx_params_decoder
static struct chacha20_poly1305_set_ctx_params_st chacha20_poly1305_set_ctx_params_decoder(const OSSL_PARAM params[]) {
    struct chacha20_poly1305_set_ctx_params_st r;
    const OSSL_PARAM *p;
    const char *s;

    memset(&r, 0, sizeof(r));
    for (p = params; (s = p->key) != NULL; p++)
        switch(s[0]) {
        default:
            break;
        case 'i':
            if (ossl_likely(r.ivlen == NULL && strcmp("vlen", s + 1) == 0))
                r.ivlen = (OSSL_PARAM *)p;
            break;
        case 'k':
            if (ossl_likely(r.keylen == NULL && strcmp("eylen", s + 1) == 0))
                r.keylen = (OSSL_PARAM *)p;
            break;
        case 't':
            switch(s[1]) {
            default:
                break;
            case 'a':
                if (ossl_likely(r.tag == NULL && strcmp("g", s + 2) == 0))
                    r.tag = (OSSL_PARAM *)p;
                break;
            case 'l':
                switch(s[2]) {
                default:
                    break;
                case 's':
                    switch(s[3]) {
                    default:
                        break;
                    case 'a':
                        if (ossl_likely(r.aad == NULL && strcmp("ad", s + 4) == 0))
                            r.aad = (OSSL_PARAM *)p;
                        break;
                    case 'i':
                        if (ossl_likely(r.fixed == NULL && strcmp("vfixed", s + 4) == 0))
                            r.fixed = (OSSL_PARAM *)p;
                    }
                }
            }
        }
    return r;
}
#endif
/* End of machine generated */

static const OSSL_PARAM *chacha20_poly1305_settable_ctx_params(
        ossl_unused void *cctx, ossl_unused void *provctx
    )
{
    return chacha20_poly1305_set_ctx_params_list;
}

static int chacha20_poly1305_set_ctx_params(void *vctx,
                                            const OSSL_PARAM params[])
{
    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;
    struct chacha20_poly1305_set_ctx_params_st p;

    if (ossl_param_is_empty(params))
        return 1;

    p = chacha20_poly1305_set_ctx_params_decoder(params);


    if (p.keylen != NULL) {
        if (!OSSL_PARAM_get_size_t(p.keylen, &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;
        }
    }

    if (p.ivlen != NULL) {
        if (!OSSL_PARAM_get_size_t(p.ivlen, &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;
        }
    }

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

    if (p.aad != NULL) {
        if (p.aad->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.aad->data, p.aad->data_size);
        if (len == 0) {
            ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_DATA);
            return 0;
        }
        ctx->tls_aad_pad_sz = len;
    }

    if (p.fixed != NULL) {
        if (p.fixed->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.fixed->data,
                                 p.fixed->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: 2025-06-22 06:56

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
11		/* Dispatch functions for chacha20_poly1305 cipher */
12
13		#include <string.h>
14		#include <openssl/proverr.h>
15		#include "cipher_chacha20_poly1305.h"
16		#include "prov/implementations.h"
17		#include "prov/providercommon.h"
18
19	1	#define CHACHA20_POLY1305_KEYLEN CHACHA_KEY_SIZE
20	1	#define CHACHA20_POLY1305_BLKLEN 1
21	0	#define CHACHA20_POLY1305_MAX_IVLEN 12
22	0	#define CHACHA20_POLY1305_MODE 0
23	1	#define CHACHA20_POLY1305_FLAGS (PROV_CIPHER_FLAG_AEAD \
24	1	\| PROV_CIPHER_FLAG_CUSTOM_IV)
25
26		static OSSL_FUNC_cipher_newctx_fn chacha20_poly1305_newctx;
27		static OSSL_FUNC_cipher_freectx_fn chacha20_poly1305_freectx;
28		static OSSL_FUNC_cipher_dupctx_fn chacha20_poly1305_dupctx;
29		static OSSL_FUNC_cipher_encrypt_init_fn chacha20_poly1305_einit;
30		static OSSL_FUNC_cipher_decrypt_init_fn chacha20_poly1305_dinit;
31		static OSSL_FUNC_cipher_get_params_fn chacha20_poly1305_get_params;
32		static OSSL_FUNC_cipher_get_ctx_params_fn chacha20_poly1305_get_ctx_params;
33		static OSSL_FUNC_cipher_set_ctx_params_fn chacha20_poly1305_set_ctx_params;
34		static OSSL_FUNC_cipher_cipher_fn chacha20_poly1305_cipher;
35		static OSSL_FUNC_cipher_final_fn chacha20_poly1305_final;
36		static OSSL_FUNC_cipher_gettable_ctx_params_fn chacha20_poly1305_gettable_ctx_params;
37		static OSSL_FUNC_cipher_settable_ctx_params_fn chacha20_poly1305_settable_ctx_params;
38		#define chacha20_poly1305_gettable_params ossl_cipher_generic_gettable_params
39		#define chacha20_poly1305_update chacha20_poly1305_cipher
40
41		static void chacha20_poly1305_newctx(void provctx)
42	0	{
43	0	PROV_CHACHA20_POLY1305_CTX *ctx;
44
45	0	if (!ossl_prov_is_running())
46	0	return NULL;
47
48	0	ctx = OPENSSL_zalloc(sizeof(*ctx));
49	0	if (ctx != NULL) {
50	0	ossl_cipher_generic_initkey(&ctx->base, CHACHA20_POLY1305_KEYLEN * 8,
51	0	CHACHA20_POLY1305_BLKLEN * 8,
52	0	CHACHA20_POLY1305_IVLEN * 8,
53	0	CHACHA20_POLY1305_MODE,
54	0	CHACHA20_POLY1305_FLAGS,
55	0	ossl_prov_cipher_hw_chacha20_poly1305(
56	0	CHACHA20_POLY1305_KEYLEN * 8),
57	0	NULL);
58	0	ctx->tls_payload_length = NO_TLS_PAYLOAD_LENGTH;
59	0	ossl_chacha20_initctx(&ctx->chacha);
60	0	}
61	0	return ctx;
62	0	}
63
64		static void chacha20_poly1305_dupctx(void provctx)
65	0	{
66	0	PROV_CHACHA20_POLY1305_CTX *ctx = provctx;
67	0	PROV_CHACHA20_POLY1305_CTX *dctx = NULL;
68
69	0	if (ctx == NULL)
70	0	return NULL;
71	0	dctx = OPENSSL_memdup(ctx, sizeof(*ctx));
72	0	if (dctx != NULL && dctx->base.tlsmac != NULL && dctx->base.alloced) {
73	0	dctx->base.tlsmac = OPENSSL_memdup(dctx->base.tlsmac,
74	0	dctx->base.tlsmacsize);
75	0	if (dctx->base.tlsmac == NULL) {
76	0	OPENSSL_free(dctx);
77	0	dctx = NULL;
78	0	}
79	0	}
80	0	return dctx;
81	0	}
82
83		static void chacha20_poly1305_freectx(void *vctx)
84	0	{
85	0	PROV_CHACHA20_POLY1305_CTX ctx = (PROV_CHACHA20_POLY1305_CTX )vctx;
86
87	0	if (ctx != NULL) {
88	0	ossl_cipher_generic_reset_ctx((PROV_CIPHER_CTX *)vctx);
89	0	OPENSSL_clear_free(ctx, sizeof(*ctx));
90	0	}
91	0	}
92
93		static int chacha20_poly1305_get_params(OSSL_PARAM params[])
94	1	{
95	1	return ossl_cipher_generic_get_params(params, 0, CHACHA20_POLY1305_FLAGS,
96	1	CHACHA20_POLY1305_KEYLEN * 8,
97	1	CHACHA20_POLY1305_BLKLEN * 8,
98	1	CHACHA20_POLY1305_IVLEN * 8);
99	1	}
100
101		/* Machine generated by util/perl/OpenSSL/paramnames.pm */
102		#ifndef chacha20_poly1305_get_ctx_params_list
103		static const OSSL_PARAM chacha20_poly1305_get_ctx_params_list[] = {
104		OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_KEYLEN, NULL),
105		OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_IVLEN, NULL),
106		OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_AEAD_TAGLEN, NULL),
107		OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_AEAD_TAG, NULL, 0),
108		OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD_PAD, NULL),
109		OSSL_PARAM_END
110		};
111		#endif
112
113		#ifndef chacha20_poly1305_get_ctx_params_st
114		struct chacha20_poly1305_get_ctx_params_st {
115		OSSL_PARAM *ivlen;
116		OSSL_PARAM *keylen;
117		OSSL_PARAM *pad;
118		OSSL_PARAM *tag;
119		OSSL_PARAM *taglen;
120		};
121		#endif
122
123		#ifndef chacha20_poly1305_get_ctx_params_decoder
124	0	static struct chacha20_poly1305_get_ctx_params_st chacha20_poly1305_get_ctx_params_decoder(const OSSL_PARAM params[]) {
125	0	struct chacha20_poly1305_get_ctx_params_st r;
126	0	const OSSL_PARAM *p;
127	0	const char *s;
128
129	0	memset(&r, 0, sizeof(r));
130	0	for (p = params; (s = p->key) != NULL; p++)
131	0	switch(s[0]) {
132	0	default:
133	0	break;
134	0	case 'i':
135	0	if (ossl_likely(r.ivlen == NULL && strcmp("vlen", s + 1) == 0))
136	0	r.ivlen = (OSSL_PARAM *)p;
137	0	break;
138	0	case 'k':
139	0	if (ossl_likely(r.keylen == NULL && strcmp("eylen", s + 1) == 0))
140	0	r.keylen = (OSSL_PARAM *)p;
141	0	break;
142	0	case 't':
143	0	switch(s[1]) {
144	0	default:
145	0	break;
146	0	case 'a':
147	0	switch(s[2]) {
148	0	default:
149	0	break;
150	0	case 'g':
151	0	switch(s[3]) {
152	0	default:
153	0	break;
154	0	case 'l':
155	0	if (ossl_likely(r.taglen == NULL && strcmp("en", s + 4) == 0))
156	0	r.taglen = (OSSL_PARAM *)p;
157	0	break;
158	0	case '\0':
159	0	r.tag = ossl_likely(r.tag == NULL) ? (OSSL_PARAM *)p : r.tag;
160	0	}
161	0	}
162	0	break;
163	0	case 'l':
164	0	if (ossl_likely(r.pad == NULL && strcmp("saadpad", s + 2) == 0))
165	0	r.pad = (OSSL_PARAM *)p;
166	0	}
167	0	}
168	0	return r;
169	0	}
170		#endif
171		/* End of machine generated */
172
173		static int chacha20_poly1305_get_ctx_params(void *vctx, OSSL_PARAM params[])
174	0	{
175	0	PROV_CHACHA20_POLY1305_CTX ctx = (PROV_CHACHA20_POLY1305_CTX )vctx;
176	0	struct chacha20_poly1305_get_ctx_params_st p;
177
178	0	p = chacha20_poly1305_get_ctx_params_decoder(params);
179
180	0	if (p.ivlen != NULL
181	0	&& !OSSL_PARAM_set_size_t(p.ivlen, CHACHA20_POLY1305_IVLEN)) {
182	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
183	0	return 0;
184	0	}
185
186	0	if (p.keylen != NULL
187	0	&& !OSSL_PARAM_set_size_t(p.keylen, CHACHA20_POLY1305_KEYLEN)) {
188	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
189	0	return 0;
190	0	}
191
192	0	if (p.taglen != NULL
193	0	&& !OSSL_PARAM_set_size_t(p.taglen, ctx->tag_len)) {
194	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
195	0	return 0;
196	0	}
197
198	0	if (p.pad != NULL
199	0	&& !OSSL_PARAM_set_size_t(p.pad, ctx->tls_aad_pad_sz)) {
200	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
201	0	return 0;
202	0	}
203
204	0	if (p.tag != NULL) {
205	0	if (p.tag->data_type != OSSL_PARAM_OCTET_STRING) {
206	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
207	0	return 0;
208	0	}
209	0	if (!ctx->base.enc) {
210	0	ERR_raise(ERR_LIB_PROV, PROV_R_TAG_NOT_SET);
211	0	return 0;
212	0	}
213	0	if (p.tag->data_size == 0 \|\| p.tag->data_size > POLY1305_BLOCK_SIZE) {
214	0	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_TAG_LENGTH);
215	0	return 0;
216	0	}
217	0	memcpy(p.tag->data, ctx->tag, p.tag->data_size);
218	0	}
219	0	return 1;
220	0	}
221
222		static const OSSL_PARAM *chacha20_poly1305_gettable_ctx_params
223		(ossl_unused void cctx, ossl_unused void provctx)
224	1	{
225	1	return chacha20_poly1305_get_ctx_params_list;
226	1	}
227
228		/* Machine generated by util/perl/OpenSSL/paramnames.pm */
229		#ifndef chacha20_poly1305_set_ctx_params_list
230		static const OSSL_PARAM chacha20_poly1305_set_ctx_params_list[] = {
231		OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_KEYLEN, NULL),
232		OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_IVLEN, NULL),
233		OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_AEAD_TAG, NULL, 0),
234		OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD, NULL, 0),
235		OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_AEAD_TLS1_IV_FIXED, NULL, 0),
236		OSSL_PARAM_END
237		};
238		#endif
239
240		#ifndef chacha20_poly1305_set_ctx_params_st
241		struct chacha20_poly1305_set_ctx_params_st {
242		OSSL_PARAM *aad;
243		OSSL_PARAM *fixed;
244		OSSL_PARAM *ivlen;
245		OSSL_PARAM *keylen;
246		OSSL_PARAM *tag;
247		};
248		#endif
249
250		#ifndef chacha20_poly1305_set_ctx_params_decoder
251	0	static struct chacha20_poly1305_set_ctx_params_st chacha20_poly1305_set_ctx_params_decoder(const OSSL_PARAM params[]) {
252	0	struct chacha20_poly1305_set_ctx_params_st r;
253	0	const OSSL_PARAM *p;
254	0	const char *s;
255
256	0	memset(&r, 0, sizeof(r));
257	0	for (p = params; (s = p->key) != NULL; p++)
258	0	switch(s[0]) {
259	0	default:
260	0	break;
261	0	case 'i':
262	0	if (ossl_likely(r.ivlen == NULL && strcmp("vlen", s + 1) == 0))
263	0	r.ivlen = (OSSL_PARAM *)p;
264	0	break;
265	0	case 'k':
266	0	if (ossl_likely(r.keylen == NULL && strcmp("eylen", s + 1) == 0))
267	0	r.keylen = (OSSL_PARAM *)p;
268	0	break;
269	0	case 't':
270	0	switch(s[1]) {
271	0	default:
272	0	break;
273	0	case 'a':
274	0	if (ossl_likely(r.tag == NULL && strcmp("g", s + 2) == 0))
275	0	r.tag = (OSSL_PARAM *)p;
276	0	break;
277	0	case 'l':
278	0	switch(s[2]) {
279	0	default:
280	0	break;
281	0	case 's':
282	0	switch(s[3]) {
283	0	default:
284	0	break;
285	0	case 'a':
286	0	if (ossl_likely(r.aad == NULL && strcmp("ad", s + 4) == 0))
287	0	r.aad = (OSSL_PARAM *)p;
288	0	break;
289	0	case 'i':
290	0	if (ossl_likely(r.fixed == NULL && strcmp("vfixed", s + 4) == 0))
291	0	r.fixed = (OSSL_PARAM *)p;
292	0	}
293	0	}
294	0	}
295	0	}
296	0	return r;
297	0	}
298		#endif
299		/* End of machine generated */
300
301		static const OSSL_PARAM *chacha20_poly1305_settable_ctx_params(
302		ossl_unused void cctx, ossl_unused void provctx
303		)
304	0	{
305	0	return chacha20_poly1305_set_ctx_params_list;
306	0	}
307
308		static int chacha20_poly1305_set_ctx_params(void *vctx,
309		const OSSL_PARAM params[])
310	0	{
311	0	size_t len;
312	0	PROV_CHACHA20_POLY1305_CTX ctx = (PROV_CHACHA20_POLY1305_CTX )vctx;
313	0	PROV_CIPHER_HW_CHACHA20_POLY1305 *hw =
314	0	(PROV_CIPHER_HW_CHACHA20_POLY1305 *)ctx->base.hw;
315	0	struct chacha20_poly1305_set_ctx_params_st p;
316
317	0	if (ossl_param_is_empty(params))
318	0	return 1;
319
320	0	p = chacha20_poly1305_set_ctx_params_decoder(params);
321
322
323	0	if (p.keylen != NULL) {
324	0	if (!OSSL_PARAM_get_size_t(p.keylen, &len)) {
325	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
326	0	return 0;
327	0	}
328	0	if (len != CHACHA20_POLY1305_KEYLEN) {
329	0	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY_LENGTH);
330	0	return 0;
331	0	}
332	0	}
333
334	0	if (p.ivlen != NULL) {
335	0	if (!OSSL_PARAM_get_size_t(p.ivlen, &len)) {
336	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
337	0	return 0;
338	0	}
339	0	if (len != CHACHA20_POLY1305_MAX_IVLEN) {
340	0	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IV_LENGTH);
341	0	return 0;
342	0	}
343	0	}
344
345	0	if (p.tag != NULL) {
346	0	if (p.tag->data_type != OSSL_PARAM_OCTET_STRING) {
347	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
348	0	return 0;
349	0	}
350	0	if (p.tag->data_size == 0 \|\| p.tag->data_size > POLY1305_BLOCK_SIZE) {
351	0	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_TAG_LENGTH);
352	0	return 0;
353	0	}
354	0	if (p.tag->data != NULL) {
355	0	if (ctx->base.enc) {
356	0	ERR_raise(ERR_LIB_PROV, PROV_R_TAG_NOT_NEEDED);
357	0	return 0;
358	0	}
359	0	memcpy(ctx->tag, p.tag->data, p.tag->data_size);
360	0	}
361	0	ctx->tag_len = p.tag->data_size;
362	0	}
363
364	0	if (p.aad != NULL) {
365	0	if (p.aad->data_type != OSSL_PARAM_OCTET_STRING) {
366	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
367	0	return 0;
368	0	}
369	0	len = hw->tls_init(&ctx->base, p.aad->data, p.aad->data_size);
370	0	if (len == 0) {
371	0	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_DATA);
372	0	return 0;
373	0	}
374	0	ctx->tls_aad_pad_sz = len;
375	0	}
376
377	0	if (p.fixed != NULL) {
378	0	if (p.fixed->data_type != OSSL_PARAM_OCTET_STRING) {
379	0	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
380	0	return 0;
381	0	}
382	0	if (hw->tls_iv_set_fixed(&ctx->base, p.fixed->data,
383	0	p.fixed->data_size) == 0) {
384	0	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IV_LENGTH);
385	0	return 0;
386	0	}
387	0	}
388	0	return 1;
389	0	}
390
391		static int chacha20_poly1305_einit(void vctx, const unsigned char key,
392		size_t keylen, const unsigned char *iv,
393		size_t ivlen, const OSSL_PARAM params[])
394	0	{
395	0	int ret;
396
397		/* The generic function checks for ossl_prov_is_running() */
398	0	ret = ossl_cipher_generic_einit(vctx, key, keylen, iv, ivlen, NULL);
399	0	if (ret && iv != NULL) {
400	0	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
401	0	PROV_CIPHER_HW_CHACHA20_POLY1305 *hw =
402	0	(PROV_CIPHER_HW_CHACHA20_POLY1305 *)ctx->hw;
403
404	0	hw->initiv(ctx);
405	0	}
406	0	if (ret && !chacha20_poly1305_set_ctx_params(vctx, params))
407	0	ret = 0;
408	0	return ret;
409	0	}
410
411		static int chacha20_poly1305_dinit(void vctx, const unsigned char key,
412		size_t keylen, const unsigned char *iv,
413		size_t ivlen, const OSSL_PARAM params[])
414	0	{
415	0	int ret;
416
417		/* The generic function checks for ossl_prov_is_running() */
418	0	ret = ossl_cipher_generic_dinit(vctx, key, keylen, iv, ivlen, NULL);
419	0	if (ret && iv != NULL) {
420	0	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
421	0	PROV_CIPHER_HW_CHACHA20_POLY1305 *hw =
422	0	(PROV_CIPHER_HW_CHACHA20_POLY1305 *)ctx->hw;
423
424	0	hw->initiv(ctx);
425	0	}
426	0	if (ret && !chacha20_poly1305_set_ctx_params(vctx, params))
427	0	ret = 0;
428	0	return ret;
429	0	}
430
431		static int chacha20_poly1305_cipher(void vctx, unsigned char out,
432		size_t *outl, size_t outsize,
433		const unsigned char *in, size_t inl)
434	0	{
435	0	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
436	0	PROV_CIPHER_HW_CHACHA20_POLY1305 *hw =
437	0	(PROV_CIPHER_HW_CHACHA20_POLY1305 *)ctx->hw;
438
439	0	if (!ossl_prov_is_running())
440	0	return 0;
441
442	0	if (inl == 0) {
443	0	*outl = 0;
444	0	return 1;
445	0	}
446
447	0	if (outsize < inl) {
448	0	ERR_raise(ERR_LIB_PROV, PROV_R_OUTPUT_BUFFER_TOO_SMALL);
449	0	return 0;
450	0	}
451
452	0	if (!hw->aead_cipher(ctx, out, outl, in, inl))
453	0	return 0;
454
455	0	return 1;
456	0	}
457
458		static int chacha20_poly1305_final(void vctx, unsigned char out, size_t *outl,
459		size_t outsize)
460	0	{
461	0	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
462	0	PROV_CIPHER_HW_CHACHA20_POLY1305 *hw =
463	0	(PROV_CIPHER_HW_CHACHA20_POLY1305 *)ctx->hw;
464
465	0	if (!ossl_prov_is_running())
466	0	return 0;
467
468	0	if (hw->aead_cipher(ctx, out, outl, NULL, 0) <= 0)
469	0	return 0;
470
471	0	*outl = 0;
472	0	return 1;
473	0	}
474
475		/* ossl_chacha20_ossl_poly1305_functions */
476		const OSSL_DISPATCH ossl_chacha20_ossl_poly1305_functions[] = {
477		{ OSSL_FUNC_CIPHER_NEWCTX, (void (*)(void))chacha20_poly1305_newctx },
478		{ OSSL_FUNC_CIPHER_FREECTX, (void (*)(void))chacha20_poly1305_freectx },
479		{ OSSL_FUNC_CIPHER_DUPCTX, (void (*)(void))chacha20_poly1305_dupctx },
480		{ OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void))chacha20_poly1305_einit },
481		{ OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void))chacha20_poly1305_dinit },
482		{ OSSL_FUNC_CIPHER_UPDATE, (void (*)(void))chacha20_poly1305_update },
483		{ OSSL_FUNC_CIPHER_FINAL, (void (*)(void))chacha20_poly1305_final },
484		{ OSSL_FUNC_CIPHER_CIPHER, (void (*)(void))chacha20_poly1305_cipher },
485		{ OSSL_FUNC_CIPHER_GET_PARAMS,
486		(void (*)(void))chacha20_poly1305_get_params },
487		{ OSSL_FUNC_CIPHER_GETTABLE_PARAMS,
488		(void (*)(void))chacha20_poly1305_gettable_params },
489		{ OSSL_FUNC_CIPHER_GET_CTX_PARAMS,
490		(void (*)(void))chacha20_poly1305_get_ctx_params },
491		{ OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS,
492		(void (*)(void))chacha20_poly1305_gettable_ctx_params },
493		{ OSSL_FUNC_CIPHER_SET_CTX_PARAMS,
494		(void (*)(void))chacha20_poly1305_set_ctx_params },
495		{ OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,
496		(void (*)(void))chacha20_poly1305_settable_ctx_params },
497		OSSL_DISPATCH_END
498		};
499