-/* $OpenBSD: m_sigver.c,v 1.21 2024/03/27 01:55:40 joshua Exp $ */
+/* $OpenBSD: m_sigver.c,v 1.22 2024/03/27 03:05:59 jsing Exp $ */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
* project 2006.
*/
EVP_DigestSignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, size_t *siglen)
{
EVP_PKEY_CTX *pctx = ctx->pctx;
- EVP_MD_CTX *md_ctx = NULL;
- unsigned char md[EVP_MAX_MD_SIZE];
- unsigned int mdlen = 0;
- int s;
- int ret = 0;
+ int r = 0;
if (pctx->pmeth->flags & EVP_PKEY_FLAG_SIGCTX_CUSTOM)
return evp_digestsignfinal_sigctx_custom(ctx, sigret, siglen);
- if (sigret == NULL) {
+ if (sigret) {
+ EVP_MD_CTX tmp_ctx;
+ unsigned char md[EVP_MAX_MD_SIZE];
+ unsigned int mdlen = 0;
+ EVP_MD_CTX_legacy_clear(&tmp_ctx);
+ if (!EVP_MD_CTX_copy_ex(&tmp_ctx, ctx))
+ return 0;
+ if (ctx->pctx->pmeth->signctx != NULL) {
+ r = tmp_ctx.pctx->pmeth->signctx(tmp_ctx.pctx,
+ sigret, siglen, &tmp_ctx);
+ EVP_MD_CTX_cleanup(&tmp_ctx);
+ return r;
+ }
+ r = EVP_DigestFinal_ex(&tmp_ctx, md, &mdlen);
+ EVP_MD_CTX_cleanup(&tmp_ctx);
+ if (!r)
+ return r;
+ if (EVP_PKEY_sign(ctx->pctx, sigret, siglen, md, mdlen) <= 0)
+ return 0;
+ } else {
if (ctx->pctx->pmeth->signctx != NULL) {
- if (ctx->pctx->pmeth->signctx(ctx->pctx, NULL,
+ if (ctx->pctx->pmeth->signctx(ctx->pctx, sigret,
siglen, ctx) <= 0)
return 0;
- return 1;
+ } else {
+ int s = EVP_MD_size(ctx->digest);
+ if (s < 0 || EVP_PKEY_sign(ctx->pctx, sigret, siglen,
+ NULL, s) <= 0)
+ return 0;
}
-
- if ((s = EVP_MD_size(ctx->digest)) < 0)
- return 0;
- if (EVP_PKEY_sign(ctx->pctx, NULL, siglen, NULL, s) <= 0)
- return 0;
-
- return 1;
}
-
-
- if ((md_ctx = EVP_MD_CTX_new()) == NULL)
- goto err;
- if (!EVP_MD_CTX_copy_ex(md_ctx, ctx))
- goto err;
- if (md_ctx->pctx->pmeth->signctx != NULL) {
- if(md_ctx->pctx->pmeth->signctx(md_ctx->pctx,
- sigret, siglen, md_ctx) <= 0)
- goto err;
- }
- if (!EVP_DigestFinal_ex(md_ctx, md, &mdlen))
- goto err;
- if (EVP_PKEY_sign(ctx->pctx, sigret, siglen, md, mdlen) <= 0)
- goto err;
-
- ret = 1;
-
- err:
- EVP_MD_CTX_free(md_ctx);
-
- return ret;
+ return 1;
}
int