X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fevp%2Fopenbsd_hw.c;h=e5252e2e937a6accbc602d601872ce2df0ae0fab;hp=dfee5ca2bbf554c8744de9dbf28e505de16c86d7;hb=f756fb430eb8f5f70696f174460eb90740b318f7;hpb=dbfc0f8c2b2d9f122acc246c67cf1150bf3d144f

diff --git a/crypto/evp/openbsd_hw.c b/crypto/evp/openbsd_hw.c
index dfee5ca2bb..e5252e2e93 100644
--- a/crypto/evp/openbsd_hw.c
+++ b/crypto/evp/openbsd_hw.c
@@ -1,5 +1,6 @@
+/* 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
@@ -46,6 +47,18 @@
  * 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>
@@ -54,23 +67,28 @@
 #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 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;
@@ -93,105 +111,352 @@ static int dev_crypto_init(EVP_CIPHER_CTX *ctx)
 	    }
 	close(cryptodev_fd);
 	}
-    if(!ctx->c.dev_crypto)
-	{
-	ctx->c.dev_crypto=OPENSSL_malloc(sizeof *ctx->c.dev_crypto);
-	memset(ctx->c.dev_crypto,'\0',sizeof *ctx->c.dev_crypto);
-	ctx->c.dev_crypto->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,ctx->c.dev_crypto->ses) == -1)
+    if(ioctl(fd,CIOCFSESSION,&CDATA(ctx)->ses) == -1)
 	err("CIOCFSESSION failed");
 
-    OPENSSL_free(ctx->c.dev_crypto->key);
-    OPENSSL_free(ctx->c.dev_crypto);
-    ctx->c.dev_crypto=NULL;
+    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(ctx->c.dev_crypto->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);
     
-    ctx->c.dev_crypto->cipher=CRYPTO_3DES_CBC;
-    ctx->c.dev_crypto->mac=0;
-    ctx->c.dev_crypto->keylen=24;
+    CDATA(ctx)->cipher=cipher;
+    CDATA(ctx)->keylen=klen;
 
-    if (ioctl(fd,CIOCGSESSION,ctx->c.dev_crypto) == -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];
+
+    if(!inl)
+	return 1;
 
-    assert(ctx->c.dev_crypto);
+    assert(CDATA(ctx));
     assert(!dev_failed);
 
     memset(&cryp,'\0',sizeof cryp);
-    cryp.ses=ctx->c.dev_crypto->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;
     }
 
-BLOCK_CIPHER_def_cbc(dev_crypto_des_ede3, des_ede,NID_des_ede3, 8, 24, 8,
+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 const 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);
+    if (to_md->data == NULL)
+	return 0;
+    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