/* m_sigver.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
- * project 2006.
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2006.
*/
/* ====================================================================
* Copyright (c) 2006,2007 The OpenSSL Project. All rights reserved.
* are met:
*
* 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
+ * notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
#include "evp_locl.h"
static int do_sigver_init(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
- const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey,
- int ver)
- {
- int r = 0;
- if (ctx->pctx == NULL)
- ctx->pctx = EVP_PKEY_CTX_new(pkey, e);
- if (ctx->pctx == NULL)
- return 0;
- if (ver)
- {
- if (ctx->pctx->pmeth->verifyctx_init)
- {
- r = ctx->pctx->pmeth->verifyctx_init(ctx->pctx, ctx);
- if (r <= 0)
- return 0;
- }
- else if (EVP_PKEY_verify_init(ctx->pctx) <= 0)
- return 0;
- }
- else
- {
- if (ctx->pctx->pmeth->signctx_init)
- {
- r = ctx->pctx->pmeth->signctx_init(ctx->pctx, ctx);
- if (r <= 0)
- return 0;
- }
- if (EVP_PKEY_sign_init(ctx->pctx) <= 0)
- return 0;
- }
- if (EVP_PKEY_CTX_set_signature_md(ctx->pctx, type) <= 0)
- return 0;
- if (pctx)
- *pctx = ctx->pctx;
- if ((r != 2) && !EVP_DigestInit_ex(ctx, type, e))
- return 0;
- return 1;
- }
+ const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey,
+ int ver)
+{
+ if (ctx->pctx == NULL)
+ ctx->pctx = EVP_PKEY_CTX_new(pkey, e);
+ if (ctx->pctx == NULL)
+ return 0;
+
+ if (!(ctx->pctx->pmeth->flags & EVP_PKEY_FLAG_SIGCTX_CUSTOM)) {
+
+ if (type == NULL) {
+ int def_nid;
+ if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) > 0)
+ type = EVP_get_digestbynid(def_nid);
+ }
+
+ if (type == NULL) {
+ EVPerr(EVP_F_DO_SIGVER_INIT, EVP_R_NO_DEFAULT_DIGEST);
+ return 0;
+ }
+ }
+
+ if (ver) {
+ if (ctx->pctx->pmeth->verifyctx_init) {
+ if (ctx->pctx->pmeth->verifyctx_init(ctx->pctx, ctx) <= 0)
+ return 0;
+ ctx->pctx->operation = EVP_PKEY_OP_VERIFYCTX;
+ } else if (EVP_PKEY_verify_init(ctx->pctx) <= 0)
+ return 0;
+ } else {
+ if (ctx->pctx->pmeth->signctx_init) {
+ if (ctx->pctx->pmeth->signctx_init(ctx->pctx, ctx) <= 0)
+ return 0;
+ ctx->pctx->operation = EVP_PKEY_OP_SIGNCTX;
+ } else if (EVP_PKEY_sign_init(ctx->pctx) <= 0)
+ return 0;
+ }
+ if (EVP_PKEY_CTX_set_signature_md(ctx->pctx, type) <= 0)
+ return 0;
+ if (pctx)
+ *pctx = ctx->pctx;
+ if (ctx->pctx->pmeth->flags & EVP_PKEY_FLAG_SIGCTX_CUSTOM)
+ return 1;
+ if (!EVP_DigestInit_ex(ctx, type, e))
+ return 0;
+ return 1;
+}
int EVP_DigestSignInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
- const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey)
- {
- return do_sigver_init(ctx, pctx, type, e, pkey, 0);
- }
+ const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey)
+{
+ return do_sigver_init(ctx, pctx, type, e, pkey, 0);
+}
int EVP_DigestVerifyInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
- const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey)
- {
- return do_sigver_init(ctx, pctx, type, e, pkey, 1);
- }
+ const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey)
+{
+ return do_sigver_init(ctx, pctx, type, e, pkey, 1);
+}
+int EVP_DigestSignFinal(EVP_MD_CTX *ctx, unsigned char *sigret,
+ size_t *siglen)
+{
+ int sctx, r = 0;
+ EVP_PKEY_CTX *pctx = ctx->pctx;
+ if (pctx->pmeth->flags & EVP_PKEY_FLAG_SIGCTX_CUSTOM) {
+ if (!sigret)
+ return pctx->pmeth->signctx(pctx, sigret, siglen, ctx);
+ if (ctx->flags & EVP_MD_CTX_FLAG_FINALISE)
+ r = pctx->pmeth->signctx(pctx, sigret, siglen, ctx);
+ else {
+ EVP_PKEY_CTX *dctx = EVP_PKEY_CTX_dup(ctx->pctx);
+ if (!dctx)
+ return 0;
+ r = dctx->pmeth->signctx(dctx, sigret, siglen, ctx);
+ EVP_PKEY_CTX_free(dctx);
+ }
+ return r;
+ }
+ if (pctx->pmeth->signctx)
+ sctx = 1;
+ else
+ sctx = 0;
+ if (sigret) {
+ unsigned char md[EVP_MAX_MD_SIZE];
+ unsigned int mdlen;
+ if (ctx->flags & EVP_MD_CTX_FLAG_FINALISE) {
+ if (sctx)
+ r = ctx->pctx->pmeth->signctx(ctx->pctx, sigret, siglen, ctx);
+ else
+ r = EVP_DigestFinal_ex(ctx, md, &mdlen);
+ } else {
+ EVP_MD_CTX tmp_ctx;
+ EVP_MD_CTX_init(&tmp_ctx);
+ if (!EVP_MD_CTX_copy_ex(&tmp_ctx, ctx))
+ return 0;
+ if (sctx)
+ r = tmp_ctx.pctx->pmeth->signctx(tmp_ctx.pctx,
+ sigret, siglen, &tmp_ctx);
+ else
+ r = EVP_DigestFinal_ex(&tmp_ctx, md, &mdlen);
+ EVP_MD_CTX_cleanup(&tmp_ctx);
+ }
+ if (sctx || !r)
+ return r;
+ if (EVP_PKEY_sign(ctx->pctx, sigret, siglen, md, mdlen) <= 0)
+ return 0;
+ } else {
+ if (sctx) {
+ if (pctx->pmeth->signctx(pctx, sigret, siglen, ctx) <= 0)
+ return 0;
+ } else {
+ int s = EVP_MD_size(ctx->digest);
+ if (s < 0 || EVP_PKEY_sign(pctx, sigret, siglen, NULL, s) <= 0)
+ return 0;
+ }
+ }
+ return 1;
+}
-int EVP_DigestSignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, size_t *siglen)
- {
- int r;
- if (sigret)
- {
- MS_STATIC EVP_MD_CTX tmp_ctx;
- unsigned char md[EVP_MAX_MD_SIZE];
- unsigned int mdlen;
- EVP_MD_CTX_init(&tmp_ctx);
- if (!EVP_MD_CTX_copy_ex(&tmp_ctx,ctx))
- return 0;
- if (tmp_ctx.pctx->pmeth->signctx)
- r = tmp_ctx.pctx->pmeth->signctx(tmp_ctx.pctx,
- sigret, siglen, &tmp_ctx);
- else
- r = EVP_DigestFinal_ex(&tmp_ctx,md,&mdlen);
- EVP_MD_CTX_cleanup(&tmp_ctx);
- if (!r)
- return 0;
- if (EVP_PKEY_sign(ctx->pctx, sigret, siglen, md, mdlen) <= 0)
- return 0;
- }
- else
- {
- if (EVP_PKEY_sign(ctx->pctx, sigret, siglen, NULL,
- EVP_MD_size(ctx->digest)) <= 0)
- return 0;
- }
- return 1;
- }
+int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, const unsigned char *sig,
+ size_t siglen)
+{
+ unsigned char md[EVP_MAX_MD_SIZE];
+ int r;
+ unsigned int mdlen;
+ int vctx;
-int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, unsigned char *sig, size_t siglen)
- {
- MS_STATIC EVP_MD_CTX tmp_ctx;
- unsigned char md[EVP_MAX_MD_SIZE];
- int r;
- unsigned int mdlen;
- EVP_MD_CTX_init(&tmp_ctx);
- if (!EVP_MD_CTX_copy_ex(&tmp_ctx,ctx))
- return -1;
- if (tmp_ctx.pctx->pmeth->verifyctx)
- {
- r = tmp_ctx.pctx->pmeth->verifyctx(tmp_ctx.pctx,
- sig, siglen, &tmp_ctx);
- }
- else
- r = EVP_DigestFinal_ex(&tmp_ctx,md,&mdlen);
- EVP_MD_CTX_cleanup(&tmp_ctx);
- if (!r)
- return -1;
- return EVP_PKEY_verify(ctx->pctx, sig, siglen, md, mdlen);
- }
+ if (ctx->pctx->pmeth->verifyctx)
+ vctx = 1;
+ else
+ vctx = 0;
+ if (ctx->flags & EVP_MD_CTX_FLAG_FINALISE) {
+ if (vctx) {
+ r = ctx->pctx->pmeth->verifyctx(ctx->pctx, sig, siglen, ctx);
+ } else
+ r = EVP_DigestFinal_ex(ctx, md, &mdlen);
+ } else {
+ EVP_MD_CTX tmp_ctx;
+ EVP_MD_CTX_init(&tmp_ctx);
+ if (!EVP_MD_CTX_copy_ex(&tmp_ctx, ctx))
+ return -1;
+ if (vctx) {
+ r = tmp_ctx.pctx->pmeth->verifyctx(tmp_ctx.pctx,
+ sig, siglen, &tmp_ctx);
+ } else
+ r = EVP_DigestFinal_ex(&tmp_ctx, md, &mdlen);
+ EVP_MD_CTX_cleanup(&tmp_ctx);
+ }
+ if (vctx || !r)
+ return r;
+ return EVP_PKEY_verify(ctx->pctx, sig, siglen, md, mdlen);
+}
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