| Index: openssl/crypto/evp/m_sigver.c
|
| ===================================================================
|
| --- openssl/crypto/evp/m_sigver.c (revision 0)
|
| +++ openssl/crypto/evp/m_sigver.c (revision 0)
|
| @@ -0,0 +1,200 @@
|
| +/* m_sigver.c */
|
| +/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
|
| + * project 2006.
|
| + */
|
| +/* ====================================================================
|
| + * 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
|
| + * are met:
|
| + *
|
| + * 1. Redistributions of source code must retain the above copyright
|
| + * 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
|
| + * the documentation and/or other materials provided with the
|
| + * distribution.
|
| + *
|
| + * 3. All advertising materials mentioning features or use of this
|
| + * software must display the following acknowledgment:
|
| + * "This product includes software developed by the OpenSSL Project
|
| + * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
|
| + *
|
| + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
|
| + * endorse or promote products derived from this software without
|
| + * prior written permission. For written permission, please contact
|
| + * licensing@OpenSSL.org.
|
| + *
|
| + * 5. Products derived from this software may not be called "OpenSSL"
|
| + * nor may "OpenSSL" appear in their names without prior written
|
| + * permission of the OpenSSL Project.
|
| + *
|
| + * 6. Redistributions of any form whatsoever must retain the following
|
| + * acknowledgment:
|
| + * "This product includes software developed by the OpenSSL Project
|
| + * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
|
| + *
|
| + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
|
| + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
| + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
| + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
|
| + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
| + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
| + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
| + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
| + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
| + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
| + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
| + * OF THE POSSIBILITY OF SUCH DAMAGE.
|
| + * ====================================================================
|
| + *
|
| + * This product includes cryptographic software written by Eric Young
|
| + * (eay@cryptsoft.com). This product includes software written by Tim
|
| + * Hudson (tjh@cryptsoft.com).
|
| + *
|
| + */
|
| +
|
| +#include <stdio.h>
|
| +#include "cryptlib.h"
|
| +#include <openssl/evp.h>
|
| +#include <openssl/objects.h>
|
| +#include <openssl/x509.h>
|
| +#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)
|
| + {
|
| + if (ctx->pctx == NULL)
|
| + ctx->pctx = EVP_PKEY_CTX_new(pkey, e);
|
| + if (ctx->pctx == NULL)
|
| + return 0;
|
| +
|
| + 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 (!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);
|
| + }
|
| +
|
| +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);
|
| + }
|
| +
|
| +int EVP_DigestSignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, size_t *siglen)
|
| + {
|
| + int sctx, r = 0;
|
| + if (ctx->pctx->pmeth->signctx)
|
| + sctx = 1;
|
| + else
|
| + sctx = 0;
|
| + if (sigret)
|
| + {
|
| + 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 (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 (ctx->pctx->pmeth->signctx(ctx->pctx, sigret, siglen, ctx) <= 0)
|
| + return 0;
|
| + }
|
| + else
|
| + {
|
| + int s = EVP_MD_size(ctx->digest);
|
| + if (s < 0 || EVP_PKEY_sign(ctx->pctx, sigret, siglen, NULL, s) <= 0)
|
| + return 0;
|
| + }
|
| + }
|
| + return 1;
|
| + }
|
| +
|
| +int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, unsigned char *sig, size_t siglen)
|
| + {
|
| + EVP_MD_CTX tmp_ctx;
|
| + unsigned char md[EVP_MAX_MD_SIZE];
|
| + int r;
|
| + unsigned int mdlen;
|
| + int vctx;
|
| +
|
| + if (ctx->pctx->pmeth->verifyctx)
|
| + vctx = 1;
|
| + else
|
| + vctx = 0;
|
| + 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);
|
| + }
|
|
|