Add inclusion of internal/evp_int.h to all crypto/ files that need it
[openssl.git] / crypto / asn1 / a_sign.c
index 37e1e84..ee9f66c 100644 (file)
@@ -5,21 +5,21 @@
  * 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:
  *     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 
+ * 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
@@ -49,7 +49,7 @@
  * 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
@@ -63,7 +63,7 @@
  * 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 <stdio.h>
 #include <time.h>
 
-#include "cryptlib.h"
+#include "internal/cryptlib.h"
 
 #ifndef NO_SYS_TYPES_H
 # include <sys/types.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(int (*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;
+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_create();
+    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)
-                       {
-                       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=(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;
-               ASN1err(ASN1_F_ASN1_SIGN,ERR_R_MALLOC_FAILURE);
-               goto err;
-               }
-       p=buf_in;
+    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);
-       EVP_SignInit_ex(&ctx,type, NULL);
-       EVP_SignUpdate(&ctx,(unsigned char *)buf_in,inl);
-       if (!EVP_SignFinal(&ctx,(unsigned char *)buf_out,
-                       (unsigned int *)&outl,pkey))
-               {
-               outl=0;
-               ASN1err(ASN1_F_ASN1_SIGN,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);
-       }
+    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_destroy(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)
-       {
-       EVP_MD_CTX ctx;
-       unsigned char *buf_in=NULL,*buf_out=NULL;
-       int i,inl=0,outl=0,outll=0;
-       X509_ALGOR *a;
+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_create();
+
+    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_destroy(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(EVP_MD_CTX_pkey_ctx(ctx));
+
+    if (!type || !pkey) {
+        ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ASN1_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)
+            ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ERR_R_EVP_LIB);
+        if (rv <= 1)
+            goto err;
+    } else
+        rv = 2;
+
+    if (rv == 2) {
+        if (!pkey->ameth ||
+            !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);
+            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);
+
+    }
 
-       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 ||
-                       type->pkey_type == NID_ecdsa_with_SHA1)
-                       {
-                       /* special case: RFC 3279 tells us to omit 'parameters'
-                        * with id-dsa-with-sha1 and ecdsa-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=ASN1_item_i2d(asn,&buf_in, it);
-       outll=outl=EVP_PKEY_size(pkey);
-       buf_out=(unsigned char *)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;
-               }
+    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;
+    }
 
-       EVP_SignInit_ex(&ctx,type, NULL);
-       EVP_SignUpdate(&ctx,(unsigned char *)buf_in,inl);
-       if (!EVP_SignFinal(&ctx,(unsigned char *)buf_out,
-                       (unsigned int *)&outl,pkey))
-               {
-               outl=0;
-               ASN1err(ASN1_F_ASN1_SIGN,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);
-       }
+    if (!EVP_DigestSignUpdate(ctx, buf_in, inl)
+        || !EVP_DigestSignFinal(ctx, buf_out, &outl)) {
+        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:
+    EVP_MD_CTX_destroy(ctx);
+    OPENSSL_clear_free((char *)buf_in, (unsigned int)inl);
+    OPENSSL_clear_free((char *)buf_out, outll);
+    return (outl);
+}