+/* Written by Ben Laurie, 2001 */
/*
- * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved.
+ * Copyright (c) 2001 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
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
+#include <openssl/evp.h>
+#include <openssl/objects.h>
+#include <openssl/rsa.h>
+#include "evp_locl.h"
+
+/* This stuff should now all be supported through
+ * crypto/engine/hw_openbsd_dev_crypto.c unless I botched it up */
+static void *dummy=&dummy;
+
+#if 0
+
+/* check flag after OpenSSL headers to ensure make depend works */
#ifdef OPENSSL_OPENBSD_DEV_CRYPTO
#include <fcntl.h>
#include <sys/ioctl.h>
#include <crypto/cryptodev.h>
#include <unistd.h>
-#include <openssl/evp.h>
-#include <openssl/objects.h>
-#include "evp_locl.h"
#include <assert.h>
/* longest key supported in hardware */
#define MAX_HW_KEY 24
+#define MAX_HW_IV 8
+
+#define MD5_DIGEST_LENGTH 16
+#define MD5_CBLOCK 64
static int fd;
static int dev_failed;
typedef struct session_op session_op;
-#define data(ctx) EVP_C_DATA(session_op,ctx)
+#define CDATA(ctx) EVP_C_DATA(session_op,ctx)
static void err(const char *str)
{
fprintf(stderr,"%s: errno %d\n",str,errno);
}
-static int dev_crypto_init(EVP_CIPHER_CTX *ctx)
+static int dev_crypto_init(session_op *ses)
{
if(dev_failed)
return 0;
}
close(cryptodev_fd);
}
- assert(data(ctx));
- memset(data(ctx),'\0',sizeof *data(ctx));
- data(ctx)->key=OPENSSL_malloc(MAX_HW_KEY);
+ assert(ses);
+ memset(ses,'\0',sizeof *ses);
return 1;
}
static int dev_crypto_cleanup(EVP_CIPHER_CTX *ctx)
{
- if(ioctl(fd,CIOCFSESSION,&data(ctx)->ses) == -1)
+ if(ioctl(fd,CIOCFSESSION,&CDATA(ctx)->ses) == -1)
err("CIOCFSESSION failed");
- OPENSSL_free(data(ctx)->key);
+ OPENSSL_free(CDATA(ctx)->key);
return 1;
}
-/* FIXME: there should be some non-fatal way to report we fell back to s/w? */
-static int dev_crypto_des_ede3_init_key(EVP_CIPHER_CTX *ctx,
- const unsigned char *key,
- const unsigned char *iv, int enc)
+static int dev_crypto_init_key(EVP_CIPHER_CTX *ctx,int cipher,
+ const unsigned char *key,int klen)
{
- if(!dev_crypto_init(ctx))
- {
- /* fall back to using software... */
- ctx->cipher=EVP_des_ede3_cbc();
- return ctx->cipher->init(ctx,key,iv,enc);
- }
- memcpy(data(ctx)->key,key,24);
+ if(!dev_crypto_init(CDATA(ctx)))
+ return 0;
+
+ CDATA(ctx)->key=OPENSSL_malloc(MAX_HW_KEY);
+ if (CDATA(ctx)->key == NULL)
+ return 0;
+
+ assert(ctx->cipher->iv_len <= MAX_HW_IV);
+
+ memcpy(CDATA(ctx)->key,key,klen);
- data(ctx)->cipher=CRYPTO_3DES_CBC;
- data(ctx)->mac=0;
- data(ctx)->keylen=24;
+ CDATA(ctx)->cipher=cipher;
+ CDATA(ctx)->keylen=klen;
- if (ioctl(fd,CIOCGSESSION,data(ctx)) == -1)
+ if (ioctl(fd,CIOCGSESSION,CDATA(ctx)) == -1)
{
err("CIOCGSESSION failed");
- /* fall back to using software... */
- dev_crypto_cleanup(ctx);
- ctx->cipher=EVP_des_ede3_cbc();
- return ctx->cipher->init(ctx,key,iv,enc);
+ return 0;
}
return 1;
}
-static int dev_crypto_des_ede3_cbc_cipher(EVP_CIPHER_CTX *ctx,
- unsigned char *out,
- const unsigned char *in,
- unsigned int inl)
+static int dev_crypto_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
+ const unsigned char *in,unsigned int inl)
{
struct crypt_op cryp;
- unsigned char lb[8];
+ unsigned char lb[MAX_HW_IV];
- assert(data(ctx));
+ if(!inl)
+ return 1;
+
+ assert(CDATA(ctx));
assert(!dev_failed);
memset(&cryp,'\0',sizeof cryp);
- cryp.ses=data(ctx)->ses;
+ cryp.ses=CDATA(ctx)->ses;
cryp.op=ctx->encrypt ? COP_ENCRYPT : COP_DECRYPT;
cryp.flags=0;
-#if 0
- cryp.len=((inl+7)/8)*8;
-#endif
cryp.len=inl;
- assert((inl&7) == 0);
+ assert((inl&(ctx->cipher->block_size-1)) == 0);
cryp.src=(caddr_t)in;
cryp.dst=(caddr_t)out;
cryp.mac=0;
- cryp.iv=(caddr_t)ctx->iv;
+ if(ctx->cipher->iv_len)
+ cryp.iv=(caddr_t)ctx->iv;
if(!ctx->encrypt)
- memcpy(lb,&in[cryp.len-8],8);
+ memcpy(lb,&in[cryp.len-ctx->cipher->iv_len],ctx->cipher->iv_len);
- if (ioctl(fd, CIOCCRYPT, &cryp) == -1)
+ if(ioctl(fd, CIOCCRYPT, &cryp) == -1)
{
- err("CIOCCRYPT failed");
- abort();
- return 0;
+ if(errno == EINVAL) /* buffers are misaligned */
+ {
+ unsigned int cinl=0;
+ char *cin=NULL;
+ char *cout=NULL;
+
+ /* NB: this can only make cinl != inl with stream ciphers */
+ cinl=(inl+3)/4*4;
+
+ if(((unsigned long)in&3) || cinl != inl)
+ {
+ cin=OPENSSL_malloc(cinl);
+ if (cin == NULL)
+ return 0;
+ memcpy(cin,in,inl);
+ cryp.src=cin;
+ }
+
+ if(((unsigned long)out&3) || cinl != inl)
+ {
+ cout=OPENSSL_malloc(cinl);
+ if (cout == NULL)
+ {
+ if (cin != NULL)
+ OPENSSL_free(cin);
+ return 0;
+ }
+ cryp.dst=cout;
+ }
+
+ cryp.len=cinl;
+
+ if(ioctl(fd, CIOCCRYPT, &cryp) == -1)
+ {
+ err("CIOCCRYPT(2) failed");
+ printf("src=%p dst=%p\n",cryp.src,cryp.dst);
+ abort();
+ return 0;
+ }
+
+ if(cout)
+ {
+ memcpy(out,cout,inl);
+ OPENSSL_free(cout);
+ }
+ if(cin)
+ OPENSSL_free(cin);
+ }
+ else
+ {
+ err("CIOCCRYPT failed");
+ abort();
+ return 0;
+ }
}
if(ctx->encrypt)
- memcpy(ctx->iv,&out[cryp.len-8],8);
+ memcpy(ctx->iv,&out[cryp.len-ctx->cipher->iv_len],ctx->cipher->iv_len);
else
- memcpy(ctx->iv,lb,8);
+ memcpy(ctx->iv,lb,ctx->cipher->iv_len);
return 1;
}
+static int dev_crypto_des_ede3_init_key(EVP_CIPHER_CTX *ctx,
+ const unsigned char *key,
+ const unsigned char *iv, int enc)
+ { return dev_crypto_init_key(ctx,CRYPTO_3DES_CBC,key,24); }
+
+#define dev_crypto_des_ede3_cbc_cipher dev_crypto_cipher
+
BLOCK_CIPHER_def_cbc(dev_crypto_des_ede3, session_op, NID_des_ede3, 8, 24, 8,
0, dev_crypto_des_ede3_init_key,
dev_crypto_cleanup,
EVP_CIPHER_set_asn1_iv,
EVP_CIPHER_get_asn1_iv,
NULL)
-#else
-static void *dummy=&dummy;
+
+static int dev_crypto_rc4_init_key(EVP_CIPHER_CTX *ctx,
+ const unsigned char *key,
+ const unsigned char *iv, int enc)
+ { return dev_crypto_init_key(ctx,CRYPTO_ARC4,key,16); }
+
+static const EVP_CIPHER r4_cipher=
+ {
+ NID_rc4,
+ 1,16,0, /* FIXME: key should be up to 256 bytes */
+ EVP_CIPH_VARIABLE_LENGTH,
+ dev_crypto_rc4_init_key,
+ dev_crypto_cipher,
+ dev_crypto_cleanup,
+ sizeof(session_op),
+ NULL,
+ NULL,
+ NULL
+ };
+
+const EVP_CIPHER *EVP_dev_crypto_rc4(void)
+ { return &r4_cipher; }
+
+typedef struct
+ {
+ session_op sess;
+ char *data;
+ int len;
+ unsigned char md[EVP_MAX_MD_SIZE];
+ } MD_DATA;
+
+static int dev_crypto_init_digest(MD_DATA *md_data,int mac)
+ {
+ if(!dev_crypto_init(&md_data->sess))
+ return 0;
+
+ md_data->len=0;
+ md_data->data=NULL;
+
+ md_data->sess.mac=mac;
+
+ if (ioctl(fd,CIOCGSESSION,&md_data->sess) == -1)
+ {
+ err("CIOCGSESSION failed");
+ return 0;
+ }
+ return 1;
+ }
+
+static int dev_crypto_cleanup_digest(MD_DATA *md_data)
+ {
+ if (ioctl(fd,CIOCFSESSION,&md_data->sess.ses) == -1)
+ {
+ err("CIOCFSESSION failed");
+ return 0;
+ }
+
+ return 1;
+ }
+
+/* FIXME: if device can do chained MACs, then don't accumulate */
+/* FIXME: move accumulation to the framework */
+static int dev_crypto_md5_init(EVP_MD_CTX *ctx)
+ { return dev_crypto_init_digest(ctx->md_data,CRYPTO_MD5); }
+
+static int do_digest(int ses,unsigned char *md,const void *data,int len)
+ {
+ struct crypt_op cryp;
+ static unsigned char md5zero[16]=
+ {
+ 0xd4,0x1d,0x8c,0xd9,0x8f,0x00,0xb2,0x04,
+ 0xe9,0x80,0x09,0x98,0xec,0xf8,0x42,0x7e
+ };
+
+ /* some cards can't do zero length */
+ if(!len)
+ {
+ memcpy(md,md5zero,16);
+ return 1;
+ }
+
+ memset(&cryp,'\0',sizeof cryp);
+ cryp.ses=ses;
+ cryp.op=COP_ENCRYPT;/* required to do the MAC rather than check it */
+ cryp.len=len;
+ cryp.src=(caddr_t)data;
+ cryp.dst=(caddr_t)data; // FIXME!!!
+ cryp.mac=(caddr_t)md;
+
+ if(ioctl(fd, CIOCCRYPT, &cryp) == -1)
+ {
+ if(errno == EINVAL) /* buffer is misaligned */
+ {
+ char *dcopy;
+
+ dcopy=OPENSSL_malloc(len);
+ memcpy(dcopy,data,len);
+ cryp.src=dcopy;
+ cryp.dst=cryp.src; // FIXME!!!
+
+ if(ioctl(fd, CIOCCRYPT, &cryp) == -1)
+ {
+ err("CIOCCRYPT(MAC2) failed");
+ abort();
+ return 0;
+ }
+ OPENSSL_free(dcopy);
+ }
+ else
+ {
+ err("CIOCCRYPT(MAC) failed");
+ abort();
+ return 0;
+ }
+ }
+ // printf("done\n");
+
+ return 1;
+ }
+
+static int dev_crypto_md5_update(EVP_MD_CTX *ctx,const void *data,
+ unsigned long len)
+ {
+ MD_DATA *md_data=ctx->md_data;
+ char *tmp_md_data;
+
+ if(ctx->flags&EVP_MD_CTX_FLAG_ONESHOT)
+ return do_digest(md_data->sess.ses,md_data->md,data,len);
+
+ tmp_md_data=OPENSSL_realloc(md_data->data,md_data->len+len);
+ if (tmp_md_data == NULL)
+ return 0;
+ md_data->data=tmp_md_data;
+ memcpy(md_data->data+md_data->len,data,len);
+ md_data->len+=len;
+
+ return 1;
+ }
+
+static int dev_crypto_md5_final(EVP_MD_CTX *ctx,unsigned char *md)
+ {
+ int ret;
+ MD_DATA *md_data=ctx->md_data;
+
+ if(ctx->flags&EVP_MD_CTX_FLAG_ONESHOT)
+ {
+ memcpy(md,md_data->md,MD5_DIGEST_LENGTH);
+ ret=1;
+ }
+ else
+ {
+ ret=do_digest(md_data->sess.ses,md,md_data->data,md_data->len);
+ OPENSSL_free(md_data->data);
+ md_data->data=NULL;
+ md_data->len=0;
+ }
+
+ return ret;
+ }
+
+static int dev_crypto_md5_copy(EVP_MD_CTX *to,const EVP_MD_CTX *from)
+ {
+ const MD_DATA *from_md=from->md_data;
+ MD_DATA *to_md=to->md_data;
+
+ // How do we copy sessions?
+ assert(from->digest->flags&EVP_MD_FLAG_ONESHOT);
+
+ to_md->data=OPENSSL_malloc(from_md->len);
+ memcpy(to_md->data,from_md->data,from_md->len);
+
+ return 1;
+ }
+
+static int dev_crypto_md5_cleanup(EVP_MD_CTX *ctx)
+ {
+ return dev_crypto_cleanup_digest(ctx->md_data);
+ }
+
+static const EVP_MD md5_md=
+ {
+ NID_md5,
+ NID_md5WithRSAEncryption,
+ MD5_DIGEST_LENGTH,
+ EVP_MD_FLAG_ONESHOT, // XXX: set according to device info...
+ dev_crypto_md5_init,
+ dev_crypto_md5_update,
+ dev_crypto_md5_final,
+ dev_crypto_md5_copy,
+ dev_crypto_md5_cleanup,
+ EVP_PKEY_RSA_method,
+ MD5_CBLOCK,
+ sizeof(MD_DATA),
+ };
+
+const EVP_MD *EVP_dev_crypto_md5(void)
+ { return &md5_md; }
+
+#endif
#endif
projects / openssl.git / blobdiff