/* m_sigver.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
* project 2006.
*/
/* ====================================================================
- * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
+ * Copyright (c) 2006,2007 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/x509.h>
+#include "evp_locl.h"
-int do_sigver_init(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
- const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey, int ver)
+static int do_sigver_init(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
+ const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey,
+ int ver)
{
- if (!EVP_DigestInit_ex(ctx, type, e))
- return 0;
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 (EVP_PKEY_verify_init(ctx->pctx) <= 0)
+ 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 (EVP_PKEY_sign_init(ctx->pctx) <= 0)
+ 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;
}
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)
{
- 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 (!EVP_DigestFinal_ex(&tmp_ctx,md,&mdlen))
- return 0;
- EVP_MD_CTX_cleanup(&tmp_ctx);
+ 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 (EVP_PKEY_sign(ctx->pctx, sigret, siglen, NULL,
- EVP_MD_size(ctx->digest)) <= 0)
- return 0;
+ 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_DigestVerifyFinal(EVP_MD_CTX *ctx, unsigned char *sig, size_t siglen)
+int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, const 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 (!EVP_DigestFinal_ex(&tmp_ctx,md,&mdlen))
- return -1;
- EVP_MD_CTX_cleanup(&tmp_ctx);
+ int vctx;
+
+ 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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