+/* 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
* 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
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-#ifdef OPENSSL_OPENBSD_DEV_CRYPTO
-
-#include <fcntl.h>
-#include <stdio.h>
-#include <errno.h>
-#include <sys/ioctl.h>
-#include <crypto/cryptodev.h>
-#include <unistd.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
+#include <openssl/rsa.h>
#include "evp_locl.h"
-#include <assert.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 <stdio.h>
+# include <errno.h>
+# include <sys/ioctl.h>
+# include <crypto/cryptodev.h>
+# include <unistd.h>
+# include <assert.h>
/* longest key supported in hardware */
-#define MAX_HW_KEY 24
+# 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);
+{
+ fprintf(stderr, "%s: errno %d\n", str, errno);
+}
+
+static int dev_crypto_init(session_op *ses)
+{
+ if (dev_failed)
+ return 0;
+ if (!fd) {
+ int cryptodev_fd;
+
+ if ((cryptodev_fd = open("/dev/crypto", O_RDWR, 0)) < 0) {
+ err("/dev/crypto");
+ dev_failed = 1;
+ return 0;
+ }
+ if (ioctl(cryptodev_fd, CRIOGET, &fd) == -1) {
+ err("CRIOGET failed");
+ close(cryptodev_fd);
+ dev_failed = 1;
+ return 0;
+ }
+ close(cryptodev_fd);
}
+ assert(ses);
+ memset(ses, '\0', sizeof *ses);
-static int dev_crypto_init(EVP_CIPHER_CTX *ctx)
- {
- if(dev_failed)
- return 0;
- if(!fd)
- {
- int cryptodev_fd;
-
- if ((cryptodev_fd=open("/dev/crypto",O_RDWR,0)) < 0)
- {
- err("/dev/crypto");
- dev_failed=1;
- return 0;
- }
- if (ioctl(cryptodev_fd,CRIOGET,&fd) == -1)
- {
- err("CRIOGET failed");
- close(cryptodev_fd);
- dev_failed=1;
- return 0;
- }
- 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);
- }
-
return 1;
- }
+}
static int dev_crypto_cleanup(EVP_CIPHER_CTX *ctx)
- {
- if(ioctl(fd,CIOCFSESSION,ctx->c.dev_crypto->ses) == -1)
- err("CIOCFSESSION failed");
+{
+ if (ioctl(fd, CIOCFSESSION, &CDATA(ctx)->ses) == -1)
+ err("CIOCFSESSION failed");
+
+ OPENSSL_free(CDATA(ctx)->key);
+
+ return 1;
+}
+
+static int dev_crypto_init_key(EVP_CIPHER_CTX *ctx, int cipher,
+ const unsigned char *key, int klen)
+{
+ 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);
- OPENSSL_free(ctx->c.dev_crypto->key);
- OPENSSL_free(ctx->c.dev_crypto);
- ctx->c.dev_crypto=NULL;
+ memcpy(CDATA(ctx)->key, key, klen);
+ CDATA(ctx)->cipher = cipher;
+ CDATA(ctx)->keylen = klen;
+
+ if (ioctl(fd, CIOCGSESSION, CDATA(ctx)) == -1) {
+ err("CIOCGSESSION failed");
+ return 0;
+ }
return 1;
+}
+
+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[MAX_HW_IV];
+
+ if (!inl)
+ return 1;
+
+ assert(CDATA(ctx));
+ assert(!dev_failed);
+
+ memset(&cryp, '\0', sizeof cryp);
+ cryp.ses = CDATA(ctx)->ses;
+ cryp.op = ctx->encrypt ? COP_ENCRYPT : COP_DECRYPT;
+ cryp.flags = 0;
+ cryp.len = inl;
+ assert((inl & (ctx->cipher->block_size - 1)) == 0);
+ cryp.src = (caddr_t) in;
+ cryp.dst = (caddr_t) out;
+ cryp.mac = 0;
+ if (ctx->cipher->iv_len)
+ cryp.iv = (caddr_t) ctx->iv;
+
+ if (!ctx->encrypt)
+ memcpy(lb, &in[cryp.len - ctx->cipher->iv_len], ctx->cipher->iv_len);
+
+ if (ioctl(fd, CIOCCRYPT, &cryp) == -1) {
+ 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;
+ }
}
-/* FIXME: there should be some non-fatal way to report we fell back to s/w? */
+ if (ctx->encrypt)
+ memcpy(ctx->iv, &out[cryp.len - ctx->cipher->iv_len],
+ ctx->cipher->iv_len);
+ else
+ 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)
- {
- 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);
-
- ctx->c.dev_crypto->cipher=CRYPTO_3DES_CBC;
- ctx->c.dev_crypto->mac=0;
- ctx->c.dev_crypto->keylen=24;
-
- if (ioctl(fd,CIOCGSESSION,ctx->c.dev_crypto) == -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);
- }
+ 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)
+
+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;
}
-static int dev_crypto_des_ede3_cbc_cipher(EVP_CIPHER_CTX *ctx,
- unsigned char *out,
- const unsigned char *in,
- unsigned int inl)
- {
+ 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;
- unsigned char lb[8];
+ static const unsigned char md5zero[16] = {
+ 0xd4, 0x1d, 0x8c, 0xd9, 0x8f, 0x00, 0xb2, 0x04,
+ 0xe9, 0x80, 0x09, 0x98, 0xec, 0xf8, 0x42, 0x7e
+ };
- assert(ctx->c.dev_crypto);
- assert(!dev_failed);
+ /* some cards can't do zero length */
+ if (!len) {
+ memcpy(md, md5zero, 16);
+ return 1;
+ }
- memset(&cryp,'\0',sizeof cryp);
- cryp.ses=ctx->c.dev_crypto->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);
- cryp.src=(caddr_t)in;
- cryp.dst=(caddr_t)out;
- cryp.mac=0;
- cryp.iv=(caddr_t)ctx->iv;
-
- if(!ctx->encrypt)
- memcpy(lb,&in[cryp.len-8],8);
-
- if (ioctl(fd, CIOCCRYPT, &cryp) == -1)
- {
- err("CIOCCRYPT failed");
- abort();
- return 0;
- }
-
- if(ctx->encrypt)
- memcpy(ctx->iv,&out[cryp.len-8],8);
- else
- memcpy(ctx->iv,lb,8);
+ 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;
}
-BLOCK_CIPHER_def_cbc(dev_crypto_des_ede3, des_ede,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;
+ 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
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