mirror of
https://github.com/openssl/openssl.git
synced 2024-12-15 06:01:37 +08:00
7dd6de9fdd
Reviewed-by: Rich Salz <rsalz@openssl.org> (Merged from https://github.com/openssl/openssl/pull/3503)
233 lines
6.9 KiB
C
233 lines
6.9 KiB
C
/*
|
|
* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
|
|
*
|
|
* Licensed under the OpenSSL license (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <time.h>
|
|
|
|
#include "internal/cryptlib.h"
|
|
|
|
#ifndef NO_SYS_TYPES_H
|
|
# include <sys/types.h>
|
|
#endif
|
|
|
|
#include <openssl/bn.h>
|
|
#include <openssl/evp.h>
|
|
#include <openssl/x509.h>
|
|
#include <openssl/objects.h>
|
|
#include <openssl/buffer.h>
|
|
#include "internal/asn1_int.h"
|
|
#include "internal/evp_int.h"
|
|
|
|
#ifndef NO_ASN1_OLD
|
|
|
|
int ASN1_sign(i2d_of_void *i2d, X509_ALGOR *algor1, X509_ALGOR *algor2,
|
|
ASN1_BIT_STRING *signature, char *data, EVP_PKEY *pkey,
|
|
const EVP_MD *type)
|
|
{
|
|
EVP_MD_CTX *ctx = EVP_MD_CTX_new();
|
|
unsigned char *p, *buf_in = NULL, *buf_out = NULL;
|
|
int i, inl = 0, outl = 0, outll = 0;
|
|
X509_ALGOR *a;
|
|
|
|
if (ctx == NULL) {
|
|
ASN1err(ASN1_F_ASN1_SIGN, ERR_R_MALLOC_FAILURE);
|
|
goto err;
|
|
}
|
|
for (i = 0; i < 2; i++) {
|
|
if (i == 0)
|
|
a = algor1;
|
|
else
|
|
a = algor2;
|
|
if (a == NULL)
|
|
continue;
|
|
if (type->pkey_type == NID_dsaWithSHA1) {
|
|
/*
|
|
* special case: RFC 2459 tells us to omit 'parameters' with
|
|
* id-dsa-with-sha1
|
|
*/
|
|
ASN1_TYPE_free(a->parameter);
|
|
a->parameter = NULL;
|
|
} else if ((a->parameter == NULL) ||
|
|
(a->parameter->type != V_ASN1_NULL)) {
|
|
ASN1_TYPE_free(a->parameter);
|
|
if ((a->parameter = ASN1_TYPE_new()) == NULL)
|
|
goto err;
|
|
a->parameter->type = V_ASN1_NULL;
|
|
}
|
|
ASN1_OBJECT_free(a->algorithm);
|
|
a->algorithm = OBJ_nid2obj(type->pkey_type);
|
|
if (a->algorithm == NULL) {
|
|
ASN1err(ASN1_F_ASN1_SIGN, ASN1_R_UNKNOWN_OBJECT_TYPE);
|
|
goto err;
|
|
}
|
|
if (a->algorithm->length == 0) {
|
|
ASN1err(ASN1_F_ASN1_SIGN,
|
|
ASN1_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD);
|
|
goto err;
|
|
}
|
|
}
|
|
inl = i2d(data, NULL);
|
|
buf_in = OPENSSL_malloc((unsigned int)inl);
|
|
outll = outl = EVP_PKEY_size(pkey);
|
|
buf_out = OPENSSL_malloc((unsigned int)outl);
|
|
if ((buf_in == NULL) || (buf_out == NULL)) {
|
|
outl = 0;
|
|
ASN1err(ASN1_F_ASN1_SIGN, ERR_R_MALLOC_FAILURE);
|
|
goto err;
|
|
}
|
|
p = buf_in;
|
|
|
|
i2d(data, &p);
|
|
if (!EVP_SignInit_ex(ctx, type, NULL)
|
|
|| !EVP_SignUpdate(ctx, (unsigned char *)buf_in, inl)
|
|
|| !EVP_SignFinal(ctx, (unsigned char *)buf_out,
|
|
(unsigned int *)&outl, pkey)) {
|
|
outl = 0;
|
|
ASN1err(ASN1_F_ASN1_SIGN, ERR_R_EVP_LIB);
|
|
goto err;
|
|
}
|
|
OPENSSL_free(signature->data);
|
|
signature->data = buf_out;
|
|
buf_out = NULL;
|
|
signature->length = outl;
|
|
/*
|
|
* In the interests of compatibility, I'll make sure that the bit string
|
|
* has a 'not-used bits' value of 0
|
|
*/
|
|
signature->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
|
|
signature->flags |= ASN1_STRING_FLAG_BITS_LEFT;
|
|
err:
|
|
EVP_MD_CTX_free(ctx);
|
|
OPENSSL_clear_free((char *)buf_in, (unsigned int)inl);
|
|
OPENSSL_clear_free((char *)buf_out, outll);
|
|
return (outl);
|
|
}
|
|
|
|
#endif
|
|
|
|
int ASN1_item_sign(const ASN1_ITEM *it, X509_ALGOR *algor1,
|
|
X509_ALGOR *algor2, ASN1_BIT_STRING *signature, void *asn,
|
|
EVP_PKEY *pkey, const EVP_MD *type)
|
|
{
|
|
int rv;
|
|
EVP_MD_CTX *ctx = EVP_MD_CTX_new();
|
|
|
|
if (ctx == NULL) {
|
|
ASN1err(ASN1_F_ASN1_ITEM_SIGN, ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
if (!EVP_DigestSignInit(ctx, NULL, type, NULL, pkey)) {
|
|
EVP_MD_CTX_free(ctx);
|
|
return 0;
|
|
}
|
|
|
|
rv = ASN1_item_sign_ctx(it, algor1, algor2, signature, asn, ctx);
|
|
|
|
EVP_MD_CTX_free(ctx);
|
|
return rv;
|
|
}
|
|
|
|
int ASN1_item_sign_ctx(const ASN1_ITEM *it,
|
|
X509_ALGOR *algor1, X509_ALGOR *algor2,
|
|
ASN1_BIT_STRING *signature, void *asn, EVP_MD_CTX *ctx)
|
|
{
|
|
const EVP_MD *type;
|
|
EVP_PKEY *pkey;
|
|
unsigned char *buf_in = NULL, *buf_out = NULL;
|
|
size_t inl = 0, outl = 0, outll = 0;
|
|
int signid, paramtype;
|
|
int rv;
|
|
|
|
type = EVP_MD_CTX_md(ctx);
|
|
pkey = EVP_PKEY_CTX_get0_pkey(EVP_MD_CTX_pkey_ctx(ctx));
|
|
|
|
if (pkey == NULL) {
|
|
ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ASN1_R_CONTEXT_NOT_INITIALISED);
|
|
goto err;
|
|
}
|
|
|
|
if (pkey->ameth == NULL) {
|
|
ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ASN1_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED);
|
|
goto err;
|
|
}
|
|
|
|
if (pkey->ameth->item_sign) {
|
|
rv = pkey->ameth->item_sign(ctx, it, asn, algor1, algor2, signature);
|
|
if (rv == 1)
|
|
outl = signature->length;
|
|
/*-
|
|
* Return value meanings:
|
|
* <=0: error.
|
|
* 1: method does everything.
|
|
* 2: carry on as normal.
|
|
* 3: ASN1 method sets algorithm identifiers: just sign.
|
|
*/
|
|
if (rv <= 0)
|
|
ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ERR_R_EVP_LIB);
|
|
if (rv <= 1)
|
|
goto err;
|
|
} else {
|
|
rv = 2;
|
|
}
|
|
|
|
if (rv == 2) {
|
|
if (type == NULL) {
|
|
ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ASN1_R_CONTEXT_NOT_INITIALISED);
|
|
goto err;
|
|
}
|
|
if (!OBJ_find_sigid_by_algs(&signid,
|
|
EVP_MD_nid(type),
|
|
pkey->ameth->pkey_id)) {
|
|
ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX,
|
|
ASN1_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED);
|
|
goto err;
|
|
}
|
|
|
|
if (pkey->ameth->pkey_flags & ASN1_PKEY_SIGPARAM_NULL)
|
|
paramtype = V_ASN1_NULL;
|
|
else
|
|
paramtype = V_ASN1_UNDEF;
|
|
|
|
if (algor1)
|
|
X509_ALGOR_set0(algor1, OBJ_nid2obj(signid), paramtype, NULL);
|
|
if (algor2)
|
|
X509_ALGOR_set0(algor2, OBJ_nid2obj(signid), paramtype, NULL);
|
|
|
|
}
|
|
|
|
inl = ASN1_item_i2d(asn, &buf_in, it);
|
|
outll = outl = EVP_PKEY_size(pkey);
|
|
buf_out = OPENSSL_malloc((unsigned int)outl);
|
|
if ((buf_in == NULL) || (buf_out == NULL)) {
|
|
outl = 0;
|
|
ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ERR_R_MALLOC_FAILURE);
|
|
goto err;
|
|
}
|
|
|
|
if (!EVP_DigestSign(ctx, buf_out, &outl, buf_in, inl)) {
|
|
outl = 0;
|
|
ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ERR_R_EVP_LIB);
|
|
goto err;
|
|
}
|
|
OPENSSL_free(signature->data);
|
|
signature->data = buf_out;
|
|
buf_out = NULL;
|
|
signature->length = outl;
|
|
/*
|
|
* In the interests of compatibility, I'll make sure that the bit string
|
|
* has a 'not-used bits' value of 0
|
|
*/
|
|
signature->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
|
|
signature->flags |= ASN1_STRING_FLAG_BITS_LEFT;
|
|
err:
|
|
OPENSSL_clear_free((char *)buf_in, (unsigned int)inl);
|
|
OPENSSL_clear_free((char *)buf_out, outll);
|
|
return (outl);
|
|
}
|