| /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
| * All rights reserved. |
| * |
| * This package is an SSL implementation written |
| * by Eric Young (eay@cryptsoft.com). |
| * The implementation was written so as to conform with Netscapes SSL. |
| * |
| * This library is free for commercial and non-commercial use as long as |
| * the following conditions are aheared to. The following conditions |
| * apply to all code found in this distribution, be it the RC4, RSA, |
| * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
| * included with this distribution is covered by the same copyright terms |
| * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
| * |
| * Copyright remains Eric Young's, and as such any Copyright notices in |
| * the code are not to be removed. |
| * If this package is used in a product, Eric Young should be given attribution |
| * as the author of the parts of the library used. |
| * This can be in the form of a textual message at program startup or |
| * in documentation (online or textual) provided with the package. |
| * |
| * 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 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 acknowledgement: |
| * "This product includes cryptographic software written by |
| * Eric Young (eay@cryptsoft.com)" |
| * The word 'cryptographic' can be left out if the rouines from the library |
| * being used are not cryptographic related :-). |
| * 4. If you include any Windows specific code (or a derivative thereof) from |
| * the apps directory (application code) you must include an acknowledgement: |
| * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
| * ANY EXPRESS 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 AUTHOR OR 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. |
| * |
| * The licence and distribution terms for any publically available version or |
| * derivative of this code cannot be changed. i.e. this code cannot simply be |
| * copied and put under another distribution licence |
| * [including the GNU Public Licence.] */ |
| |
| #include <openssl/asn1.h> |
| #include <openssl/digest.h> |
| #include <openssl/err.h> |
| #include <openssl/evp.h> |
| #include <openssl/mem.h> |
| #include <openssl/obj.h> |
| #include <openssl/x509.h> |
| |
| #include "../evp/internal.h" |
| |
| |
| /* TODO(fork): this code appears to be dead. */ |
| #if 0 |
| #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; |
| unsigned char *p,*buf_in=NULL,*buf_out=NULL; |
| int i,inl=0,outl=0,outll=0; |
| X509_ALGOR *a; |
| |
| EVP_MD_CTX_init(&ctx); |
| 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) |
| { |
| OPENSSL_PUT_ERROR(ASN1, XXX, ASN1_R_UNKNOWN_OBJECT_TYPE); |
| goto err; |
| } |
| if (a->algorithm->length == 0) |
| { |
| OPENSSL_PUT_ERROR(ASN1, XXX, ASN1_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD); |
| goto err; |
| } |
| } |
| inl=i2d(data,NULL); |
| buf_in=(unsigned char *)OPENSSL_malloc((unsigned int)inl); |
| outll=outl=EVP_PKEY_size(pkey); |
| buf_out=(unsigned char *)OPENSSL_malloc((unsigned int)outl); |
| if ((buf_in == NULL) || (buf_out == NULL)) |
| { |
| outl=0; |
| OPENSSL_PUT_ERROR(ASN1, XXX, 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; |
| OPENSSL_PUT_ERROR(ASN1, XXX, ERR_R_EVP_LIB); |
| goto err; |
| } |
| if (signature->data != NULL) 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_cleanup(&ctx); |
| if (buf_in != NULL) |
| { OPENSSL_cleanse((char *)buf_in,(unsigned int)inl); OPENSSL_free(buf_in); } |
| if (buf_out != NULL) |
| { OPENSSL_cleanse((char *)buf_out,outll); OPENSSL_free(buf_out); } |
| return(outl); |
| } |
| |
| #endif |
| #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) |
| { |
| EVP_MD_CTX ctx; |
| EVP_MD_CTX_init(&ctx); |
| if (!EVP_DigestSignInit(&ctx, NULL, type, NULL, pkey)) |
| { |
| EVP_MD_CTX_cleanup(&ctx); |
| return 0; |
| } |
| return ASN1_item_sign_ctx(it, algor1, algor2, signature, asn, &ctx); |
| } |
| |
| |
| 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(ctx->pctx); |
| |
| if (!type || !pkey) |
| { |
| OPENSSL_PUT_ERROR(X509, ASN1_item_sign_ctx, X509_R_CONTEXT_NOT_INITIALISED); |
| return 0; |
| } |
| |
| 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) |
| OPENSSL_PUT_ERROR(X509, ASN1_item_sign_ctx, ERR_R_EVP_LIB); |
| if (rv <= 1) |
| goto err; |
| } |
| else |
| rv = 2; |
| |
| if (rv == 2) |
| { |
| /* TODO(fork): EVP_MD_FLAG_PKEY_METHOD_SIGNATURE seems to mean |
| * "is SHA". */ |
| if (!pkey->ameth || |
| !OBJ_find_sigid_by_algs(&signid, |
| EVP_MD_type(type), |
| pkey->ameth->pkey_id)) |
| { |
| OPENSSL_PUT_ERROR(X509, ASN1_item_sign_ctx, X509_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED); |
| return 0; |
| } |
| |
| 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; |
| OPENSSL_PUT_ERROR(X509, ASN1_item_sign_ctx, ERR_R_MALLOC_FAILURE); |
| goto err; |
| } |
| |
| if (!EVP_DigestSignUpdate(ctx, buf_in, inl) |
| || !EVP_DigestSignFinal(ctx, buf_out, &outl)) |
| { |
| outl=0; |
| OPENSSL_PUT_ERROR(X509, ASN1_item_sign_ctx, ERR_R_EVP_LIB); |
| goto err; |
| } |
| if (signature->data != NULL) 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_cleanup(ctx); |
| if (buf_in != NULL) |
| { OPENSSL_cleanse((char *)buf_in,(unsigned int)inl); OPENSSL_free(buf_in); } |
| if (buf_out != NULL) |
| { OPENSSL_cleanse((char *)buf_out,outll); OPENSSL_free(buf_out); } |
| return(outl); |
| } |