mirror of
https://github.com/openssl/openssl.git
synced 2024-11-28 12:35:22 +08:00
f336f98dbf
Reviewed-by: Shane Lontis <shane.lontis@oracle.com> (Merged from https://github.com/openssl/openssl/pull/14383)
336 lines
12 KiB
C
336 lines
12 KiB
C
/*
|
|
* Copyright 2019-2021 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_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->nonce_len = CHACHA20_POLY1305_IVLEN;
|
|
ctx->tls_payload_length = NO_TLS_PAYLOAD_LENGTH;
|
|
ossl_chacha20_initctx(&ctx->chacha);
|
|
}
|
|
return ctx;
|
|
}
|
|
|
|
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, ctx->nonce_len)) {
|
|
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 (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 == 0 || len > CHACHA20_POLY1305_MAX_IVLEN) {
|
|
ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IV_LENGTH);
|
|
return 0;
|
|
}
|
|
ctx->nonce_len = len;
|
|
}
|
|
|
|
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_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 },
|
|
{ 0, NULL }
|
|
};
|
|
|