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chacha20: convert to using genreated param name decoders 

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/28616)
This commit is contained in:
Pauli 2025-09-19 11:25:19 +10:00 committed by Tomas Mraz
parent 47d8dd2397
commit f4b535f1a0
1 changed files with 35 additions and 30 deletions
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65
providers/implementations/ciphers/cipher_chacha20.c.in
View File

@ -6,6 +6,9 @@
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
{-
use OpenSSL::paramnames qw(produce_param_decoder);
-}
/* Dispatch functions for chacha20 cipher */
@ -100,29 +103,37 @@ static int chacha20_get_params(OSSL_PARAM params[])
CHACHA20_IVLEN * 8);
}
{- produce_param_decoder('chacha20_get_ctx_params',
(['OSSL_CIPHER_PARAM_KEYLEN', 'keylen', 'size_t'],
['OSSL_CIPHER_PARAM_IVLEN', 'ivlen', 'size_t'],
['OSSL_CIPHER_PARAM_UPDATED_IV', 'upd_iv', 'octet_string'],
)); -}
static int chacha20_get_ctx_params(void *vctx, OSSL_PARAM params[])
{
PROV_CHACHA20_CTX *ctx = (PROV_CHACHA20_CTX *)vctx;
unsigned char ivbuf[CHACHA20_IVLEN];
OSSL_PARAM *p;
struct chacha20_get_ctx_params_st p;
p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_IVLEN);
if (p != NULL && !OSSL_PARAM_set_size_t(p, CHACHA20_IVLEN)) {
if (ctx == NULL || !chacha20_get_ctx_params_decoder(params, &p))
return 0;
if (p.ivlen != NULL && !OSSL_PARAM_set_size_t(p.ivlen, CHACHA20_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_KEYLEN)) {
if (p.keylen != NULL && !OSSL_PARAM_set_size_t(p.keylen, CHACHA20_KEYLEN)) {
ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
return 0;
}
p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_UPDATED_IV);
if (p != NULL) {
if (p.upd_iv != NULL) {
CHACHA_U32TOU8(ivbuf, ctx->counter[0]);
CHACHA_U32TOU8(ivbuf + 4, ctx->counter[1]);
CHACHA_U32TOU8(ivbuf + 8, ctx->counter[2]);
CHACHA_U32TOU8(ivbuf + 12, ctx->counter[3]);
if (!OSSL_PARAM_set_octet_string(p, ivbuf, CHACHA20_IVLEN)) {
if (!OSSL_PARAM_set_octet_string(p.upd_iv, ivbuf, CHACHA20_IVLEN)) {
ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
return 0;
}
@ -130,29 +141,28 @@ static int chacha20_get_ctx_params(void *vctx, OSSL_PARAM params[])
return 1;
}
static const OSSL_PARAM chacha20_known_gettable_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_UPDATED_IV, NULL, 0),
OSSL_PARAM_END
};
const OSSL_PARAM *chacha20_gettable_ctx_params(ossl_unused void *cctx,
ossl_unused void *provctx)
{
return chacha20_known_gettable_ctx_params;
return chacha20_get_ctx_params_list;
}
{- produce_param_decoder('chacha20_set_ctx_params',
(['OSSL_CIPHER_PARAM_KEYLEN', 'keylen', 'size_t'],
['OSSL_CIPHER_PARAM_IVLEN', 'ivlen', 'size_t'],
)); -}
static int chacha20_set_ctx_params(void *vctx, const OSSL_PARAM params[])
{
const OSSL_PARAM *p;
PROV_CHACHA20_CTX *ctx = (PROV_CHACHA20_CTX *)vctx;
struct chacha20_set_ctx_params_st p;
size_t len;
if (ossl_param_is_empty(params))
return 1;
if (ctx == NULL || !chacha20_set_ctx_params_decoder(params, &p))
return 0;
p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_KEYLEN);
if (p != NULL) {
if (!OSSL_PARAM_get_size_t(p, &len)) {
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;
}
@ -161,9 +171,9 @@ static int chacha20_set_ctx_params(void *vctx, const OSSL_PARAM params[])
return 0;
}
}
p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_IVLEN);
if (p != NULL) {
if (!OSSL_PARAM_get_size_t(p, &len)) {
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;
}
@ -175,15 +185,10 @@ static int chacha20_set_ctx_params(void *vctx, const OSSL_PARAM params[])
return 1;
}
static const OSSL_PARAM chacha20_known_settable_ctx_params[] = {
OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_KEYLEN, NULL),
OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_IVLEN, NULL),
OSSL_PARAM_END
};
const OSSL_PARAM *chacha20_settable_ctx_params(ossl_unused void *cctx,
ossl_unused void *provctx)
{
return chacha20_known_settable_ctx_params;
return chacha20_set_ctx_params_list;
}
int ossl_chacha20_einit(void *vctx, const unsigned char *key, size_t keylen,