n_pkey.c
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- /* crypto/asn1/n_pkey.c */
- /* 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 <stdio.h>
- #include "cryptlib.h"
- #ifndef OPENSSL_NO_RSA
- #include <openssl/rsa.h>
- #include <openssl/objects.h>
- #include <openssl/asn1t.h>
- #include <openssl/asn1_mac.h>
- #include <openssl/evp.h>
- #include <openssl/x509.h>
- #ifndef OPENSSL_NO_RC4
- typedef struct netscape_pkey_st
- {
- long version;
- X509_ALGOR *algor;
- ASN1_OCTET_STRING *private_key;
- } NETSCAPE_PKEY;
- typedef struct netscape_encrypted_pkey_st
- {
- ASN1_OCTET_STRING *os;
- /* This is the same structure as DigestInfo so use it:
- * although this isn't really anything to do with
- * digests.
- */
- X509_SIG *enckey;
- } NETSCAPE_ENCRYPTED_PKEY;
- ASN1_BROKEN_SEQUENCE(NETSCAPE_ENCRYPTED_PKEY) = {
- ASN1_SIMPLE(NETSCAPE_ENCRYPTED_PKEY, os, ASN1_OCTET_STRING),
- ASN1_SIMPLE(NETSCAPE_ENCRYPTED_PKEY, enckey, X509_SIG)
- } ASN1_BROKEN_SEQUENCE_END(NETSCAPE_ENCRYPTED_PKEY)
- DECLARE_ASN1_FUNCTIONS_const(NETSCAPE_ENCRYPTED_PKEY)
- DECLARE_ASN1_ENCODE_FUNCTIONS_const(NETSCAPE_ENCRYPTED_PKEY,NETSCAPE_ENCRYPTED_PKEY)
- IMPLEMENT_ASN1_FUNCTIONS_const(NETSCAPE_ENCRYPTED_PKEY)
- ASN1_SEQUENCE(NETSCAPE_PKEY) = {
- ASN1_SIMPLE(NETSCAPE_PKEY, version, LONG),
- ASN1_SIMPLE(NETSCAPE_PKEY, algor, X509_ALGOR),
- ASN1_SIMPLE(NETSCAPE_PKEY, private_key, ASN1_OCTET_STRING)
- } ASN1_SEQUENCE_END(NETSCAPE_PKEY)
- DECLARE_ASN1_FUNCTIONS_const(NETSCAPE_PKEY)
- DECLARE_ASN1_ENCODE_FUNCTIONS_const(NETSCAPE_PKEY,NETSCAPE_PKEY)
- IMPLEMENT_ASN1_FUNCTIONS_const(NETSCAPE_PKEY)
- static RSA *d2i_RSA_NET_2(RSA **a, ASN1_OCTET_STRING *os,
- int (*cb)(char *buf, int len, const char *prompt,
- int verify),
- int sgckey);
- int i2d_Netscape_RSA(const RSA *a, unsigned char **pp,
- int (*cb)(char *buf, int len, const char *prompt,
- int verify))
- {
- return i2d_RSA_NET(a, pp, cb, 0);
- }
- int i2d_RSA_NET(const RSA *a, unsigned char **pp,
- int (*cb)(char *buf, int len, const char *prompt, int verify),
- int sgckey)
- {
- int i, j, ret = 0;
- int rsalen, pkeylen, olen;
- NETSCAPE_PKEY *pkey = NULL;
- NETSCAPE_ENCRYPTED_PKEY *enckey = NULL;
- unsigned char buf[256],*zz;
- unsigned char key[EVP_MAX_KEY_LENGTH];
- EVP_CIPHER_CTX ctx;
- if (a == NULL) return(0);
- if ((pkey=NETSCAPE_PKEY_new()) == NULL) goto err;
- if ((enckey=NETSCAPE_ENCRYPTED_PKEY_new()) == NULL) goto err;
- pkey->version = 0;
- pkey->algor->algorithm=OBJ_nid2obj(NID_rsaEncryption);
- if ((pkey->algor->parameter=ASN1_TYPE_new()) == NULL) goto err;
- pkey->algor->parameter->type=V_ASN1_NULL;
- rsalen = i2d_RSAPrivateKey(a, NULL);
- /* Fake some octet strings just for the initial length
- * calculation.
- */
- pkey->private_key->length=rsalen;
- pkeylen=i2d_NETSCAPE_PKEY(pkey,NULL);
- enckey->enckey->digest->length = pkeylen;
- enckey->os->length = 11; /* "private-key" */
- enckey->enckey->algor->algorithm=OBJ_nid2obj(NID_rc4);
- if ((enckey->enckey->algor->parameter=ASN1_TYPE_new()) == NULL) goto err;
- enckey->enckey->algor->parameter->type=V_ASN1_NULL;
- if (pp == NULL)
- {
- olen = i2d_NETSCAPE_ENCRYPTED_PKEY(enckey, NULL);
- NETSCAPE_PKEY_free(pkey);
- NETSCAPE_ENCRYPTED_PKEY_free(enckey);
- return olen;
- }
- /* Since its RC4 encrypted length is actual length */
- if ((zz=(unsigned char *)OPENSSL_malloc(rsalen)) == NULL)
- {
- ASN1err(ASN1_F_I2D_RSA_NET,ERR_R_MALLOC_FAILURE);
- goto err;
- }
- pkey->private_key->data = zz;
- /* Write out private key encoding */
- i2d_RSAPrivateKey(a,&zz);
- if ((zz=OPENSSL_malloc(pkeylen)) == NULL)
- {
- ASN1err(ASN1_F_I2D_RSA_NET,ERR_R_MALLOC_FAILURE);
- goto err;
- }
- if (!ASN1_STRING_set(enckey->os, "private-key", -1))
- {
- ASN1err(ASN1_F_I2D_RSA_NET,ERR_R_MALLOC_FAILURE);
- goto err;
- }
- enckey->enckey->digest->data = zz;
- i2d_NETSCAPE_PKEY(pkey,&zz);
- /* Wipe the private key encoding */
- OPENSSL_cleanse(pkey->private_key->data, rsalen);
-
- if (cb == NULL)
- cb=EVP_read_pw_string;
- i=cb((char *)buf,256,"Enter Private Key password:",1);
- if (i != 0)
- {
- ASN1err(ASN1_F_I2D_RSA_NET,ASN1_R_BAD_PASSWORD_READ);
- goto err;
- }
- i = strlen((char *)buf);
- /* If the key is used for SGC the algorithm is modified a little. */
- if(sgckey) {
- EVP_Digest(buf, i, buf, NULL, EVP_md5(), NULL);
- memcpy(buf + 16, "SGCKEYSALT", 10);
- i = 26;
- }
- EVP_BytesToKey(EVP_rc4(),EVP_md5(),NULL,buf,i,1,key,NULL);
- OPENSSL_cleanse(buf,256);
- /* Encrypt private key in place */
- zz = enckey->enckey->digest->data;
- EVP_CIPHER_CTX_init(&ctx);
- EVP_EncryptInit_ex(&ctx,EVP_rc4(),NULL,key,NULL);
- EVP_EncryptUpdate(&ctx,zz,&i,zz,pkeylen);
- EVP_EncryptFinal_ex(&ctx,zz + i,&j);
- EVP_CIPHER_CTX_cleanup(&ctx);
- ret = i2d_NETSCAPE_ENCRYPTED_PKEY(enckey, pp);
- err:
- NETSCAPE_ENCRYPTED_PKEY_free(enckey);
- NETSCAPE_PKEY_free(pkey);
- return(ret);
- }
- RSA *d2i_Netscape_RSA(RSA **a, const unsigned char **pp, long length,
- int (*cb)(char *buf, int len, const char *prompt,
- int verify))
- {
- return d2i_RSA_NET(a, pp, length, cb, 0);
- }
- RSA *d2i_RSA_NET(RSA **a, const unsigned char **pp, long length,
- int (*cb)(char *buf, int len, const char *prompt, int verify),
- int sgckey)
- {
- RSA *ret=NULL;
- const unsigned char *p, *kp;
- NETSCAPE_ENCRYPTED_PKEY *enckey = NULL;
- p = *pp;
- enckey = d2i_NETSCAPE_ENCRYPTED_PKEY(NULL, &p, length);
- if(!enckey) {
- ASN1err(ASN1_F_D2I_RSA_NET,ASN1_R_DECODING_ERROR);
- return NULL;
- }
- if ((enckey->os->length != 11) || (strncmp("private-key",
- (char *)enckey->os->data,11) != 0))
- {
- ASN1err(ASN1_F_D2I_RSA_NET,ASN1_R_PRIVATE_KEY_HEADER_MISSING);
- NETSCAPE_ENCRYPTED_PKEY_free(enckey);
- return NULL;
- }
- if (OBJ_obj2nid(enckey->enckey->algor->algorithm) != NID_rc4)
- {
- ASN1err(ASN1_F_D2I_RSA_NET,ASN1_R_UNSUPPORTED_ENCRYPTION_ALGORITHM);
- goto err;
- }
- kp = enckey->enckey->digest->data;
- if (cb == NULL)
- cb=EVP_read_pw_string;
- if ((ret=d2i_RSA_NET_2(a, enckey->enckey->digest,cb, sgckey)) == NULL) goto err;
- *pp = p;
- err:
- NETSCAPE_ENCRYPTED_PKEY_free(enckey);
- return ret;
- }
- static RSA *d2i_RSA_NET_2(RSA **a, ASN1_OCTET_STRING *os,
- int (*cb)(char *buf, int len, const char *prompt,
- int verify), int sgckey)
- {
- NETSCAPE_PKEY *pkey=NULL;
- RSA *ret=NULL;
- int i,j;
- unsigned char buf[256];
- const unsigned char *zz;
- unsigned char key[EVP_MAX_KEY_LENGTH];
- EVP_CIPHER_CTX ctx;
- i=cb((char *)buf,256,"Enter Private Key password:",0);
- if (i != 0)
- {
- ASN1err(ASN1_F_D2I_RSA_NET_2,ASN1_R_BAD_PASSWORD_READ);
- goto err;
- }
- i = strlen((char *)buf);
- if(sgckey){
- EVP_Digest(buf, i, buf, NULL, EVP_md5(), NULL);
- memcpy(buf + 16, "SGCKEYSALT", 10);
- i = 26;
- }
-
- EVP_BytesToKey(EVP_rc4(),EVP_md5(),NULL,buf,i,1,key,NULL);
- OPENSSL_cleanse(buf,256);
- EVP_CIPHER_CTX_init(&ctx);
- EVP_DecryptInit_ex(&ctx,EVP_rc4(),NULL, key,NULL);
- EVP_DecryptUpdate(&ctx,os->data,&i,os->data,os->length);
- EVP_DecryptFinal_ex(&ctx,&(os->data[i]),&j);
- EVP_CIPHER_CTX_cleanup(&ctx);
- os->length=i+j;
- zz=os->data;
- if ((pkey=d2i_NETSCAPE_PKEY(NULL,&zz,os->length)) == NULL)
- {
- ASN1err(ASN1_F_D2I_RSA_NET_2,ASN1_R_UNABLE_TO_DECODE_RSA_PRIVATE_KEY);
- goto err;
- }
-
- zz=pkey->private_key->data;
- if ((ret=d2i_RSAPrivateKey(a,&zz,pkey->private_key->length)) == NULL)
- {
- ASN1err(ASN1_F_D2I_RSA_NET_2,ASN1_R_UNABLE_TO_DECODE_RSA_KEY);
- goto err;
- }
- err:
- NETSCAPE_PKEY_free(pkey);
- return(ret);
- }
- #endif /* OPENSSL_NO_RC4 */
- #else /* !OPENSSL_NO_RSA */
- # if PEDANTIC
- static void *dummy=&dummy;
- # endif
- #endif