Hi,
OpenSSL patch to support Linux CryptoAPI via CryptoDev interface. This patch
needs to be applied after the ocf patch is applied to the OpenSSL source. This
patch is being resubmitted with some changes to support the changes that have
been made to the Linux Cryptodev interface, since the last Openssl patch
submission.
--- /user/spulijala/openssl/openssl-0.9.8g/crypto/cryptodev.h 2008-11-20
17:00:19.511566000 -0800
+++ /user/spulijala/linux/openssl-0.9.8g/crypto/cryptodev.h 2008-11-20
15:07:10.853009000 -0800
@@ -61,6 +61,8 @@
#ifndef _CRYPTO_CRYPTO_H_
#define _CRYPTO_CRYPTO_H_
+#include <linux/types.h>
+
/* Some initial values */
#define CRYPTO_DRIVERS_INITIAL 4
#define CRYPTO_SW_SESSIONS 32
@@ -128,6 +130,7 @@
/* Max size of data that can be processed */
#define CRYPTO_MAX_DATA_LEN 64*1024 - 1
+#define CRYPTO_MAX_ALG_NAME 20
#define CRYPTO_ALGORITHM_MIN 1
@@ -178,16 +181,13 @@
#define CRYPTO_FLAG_SOFTWARE 0x02000000 /* software implementation */
/* NB: deprecated */
-struct session_op {
- u_int32_t cipher; /* ie. CRYPTO_DES_CBC */
- u_int32_t mac; /* ie. CRYPTO_MD5_HMAC */
- u_int32_t keylen; /* cipher key */
- caddr_t key;
- int mackeylen; /* mac key */
- caddr_t mackey;
-
- u_int32_t ses; /* returns: session # */
+struct session_op {
+ __u16 algo_size;
+ __u16 key_size; /* cipher key length */
+ __u16 hmackey_size; /* mac key length */
+ __u16 icv_size; /* authsize (ccm, gcm) */
+ __u8 data[0];
};
struct crypt_op {
- u_int32_t ses;
- u_int16_t op; /* i.e. COP_ENCRYPT */
#define COP_NONE 0
#define COP_ENCRYPT 1
#define COP_DECRYPT 2
- u_int16_t flags;
-#define COP_F_BATCH 0x0008 /* Batch op if possible */
- u_int len;
- caddr_t src, dst; /* become iov[] inside kernel */
- caddr_t mac; /* must be big enough for chosen MAC */
- caddr_t iv;
+ __u16 op; /* i.e. COP_ENCRYPT */
+ __u16 flags;
+ __u16 iv_size;
+ __u16 assoc_size;
+ __u8 data[0]; /* must be big enough for chosen MAC */
};
-
/*
* Parameters for looking up a crypto driver/device by
* device name or by id. The latter are returned for
@@ -267,9 +263,8 @@
#define CRIOFINDDEV CIOCFINDDEV
/* the following are done against the cloned descriptor */
-#define CIOCGSESSION _IOWR('c', 101, struct session_op)
-#define CIOCFSESSION _IOW('c', 102, u_int32_t)
-#define CIOCCRYPT _IOWR('c', 103, struct crypt_op)
+/* create crypto session */
+#define CIOCGSESSION _IOWR('c', 101, struct session_op)
#define CIOCKEY _IOWR('c', 104, struct crypt_kop)
#define CIOCASYMFEAT _IOR('c', 105, u_int32_t)
#define CIOCGSESSION2 _IOWR('c', 106, struct session2_op)
--- /user/spulijala/openssl/openssl-0.9.8g/crypto/engine/eng_cryptodev.c
2008-07-08 13:43:16.643710000 -0700
+++ /user/spulijala/linux/openssl-0.9.8g/crypto/engine/eng_cryptodev.c
2008-11-20 17:10:08.850713000 -0800
@@ -31,6 +31,9 @@
#include <openssl/evp.h>
#include <openssl/bn.h>
+#define CRYPTODEV_LINUX
+#define USE_CRYPTODEV_DIGESTS
+
#if (defined(__unix__) || defined(unix)) && !defined(USG) && \
(defined(OpenBSD) || defined(__FreeBSD_version))
#include <sys/param.h>
@@ -54,6 +57,7 @@
#else
#include <sys/types.h>
+#include <sys/uio.h>
#include <crypto/cryptodev.h>
#include <sys/ioctl.h>
#include <errno.h>
@@ -136,6 +140,43 @@
{ 0, NULL, NULL, 0 }
};
+/*******************************************************************************
+* Table Lookup for Algorithms name(Crypto/hash name)
+* Helper Structure
+*******************************************************************************
+*/
+char *algo_map_tbl[CRYPTO_ALGORITHM_MAX] = {
+ [CRYPTO_DES_CBC] = "cbc(des)",
+ [CRYPTO_3DES_CBC] = "cbc(des3_ede)",
+ [CRYPTO_MD5_HMAC] = "hmac(md5)",
+ [CRYPTO_BLF_CBC] = "cbc(blowfish)",
+ [CRYPTO_CAST_CBC] = "cbc(cast5)",
+ [CRYPTO_SKIPJACK_CBC] = "camellia",
+ [CRYPTO_MD5_HMAC] = "hmac(md5)",
+ [CRYPTO_SHA1_HMAC] = "hmac(sha1)",
+ [CRYPTO_RIPEMD160_HMAC] = "hmac(rmd160)",
+ [CRYPTO_MD5_KPDK] = "",
+ [CRYPTO_SHA1_KPDK] = "",
+ [CRYPTO_RIJNDAEL128_CBC] = "cbc(aes)",
+ [CRYPTO_AES_CBC] = "cbc(aes)",
+ [CRYPTO_ARC4] = "ecb(arc4)",
+ [CRYPTO_MD5] = "md5",
+ [CRYPTO_SHA1] = "sha1",
+ [CRYPTO_NULL_HMAC] = "",
+ [CRYPTO_NULL_CBC] = "",
+ [CRYPTO_DEFLATE_COMP] = "deflate",
+ [CRYPTO_SHA2_256_HMAC] = "hmac(sha256)",
+ [CRYPTO_SHA2_384_HMAC] = "hmac(sha384)",
+ [CRYPTO_SHA2_512_HMAC] = "hmac(sha512)",
+ [CRYPTO_CAMELLIA_CBC] = "cbc(camellia)",
+ [CRYPTO_SHA2_256] = "sha256",
+ [CRYPTO_SHA2_384] = "sha384",
+ [CRYPTO_SHA2_512] = "sha512",
+ [CRYPTO_RIPEMD160] = "rmd160",
+ [CRYPTO_AES_GCM] = "gcm(aes)",
+ [CRYPTO_AES_CCM] = "ccm(aes)",
+};
+
static struct {
int id;
int nid;
@@ -161,8 +202,8 @@
{ CRYPTO_RIPEMD160_HMAC, NID_ripemd160, 16/*?*/},
{ CRYPTO_MD5_KPDK, NID_undef, 0},
{ CRYPTO_SHA1_KPDK, NID_undef, 0},
- { CRYPTO_MD5, NID_md5, 16},
- { CRYPTO_SHA1, NID_sha1, 20},
+ { CRYPTO_MD5, NID_md5, 0},
+ { CRYPTO_SHA1, NID_sha1, 0},
{ 0, NID_undef, 0},
};
@@ -170,6 +211,18 @@
* Return a fd if /dev/crypto seems usable, 0 otherwise.
*/
static int
+open_cryptodev_fd(void)
+{
+ int fd;
+ fd = open("/dev/crypto", O_RDWR, 0);
+ if (fd < 0) {
+ perror("open(/dev/crypto)");
+ return -1;
+ }
+ return fd;
+
+}
+static int
open_dev_crypto(void)
{
static int fd = -1;
@@ -279,27 +332,31 @@
get_cryptodev_ciphers(const int **cnids)
{
static int nids[CRYPTO_ALGORITHM_MAX];
- struct session_op sess;
+ char datam[100];
+ struct session_op *op = (struct session_op *) datam;
int fd, i, count = 0;
-
- if ((fd = get_dev_crypto()) < 0) {
- *cnids = NULL;
- return (0);
- }
- memset(&sess, 0, sizeof(sess));
- sess.key = (caddr_t)"123456789abcdefghijklmno";
-
+ char *key;
+
for (i = 0; ciphers[i].id && count < CRYPTO_ALGORITHM_MAX; i++) {
if (ciphers[i].nid == NID_undef)
continue;
- sess.cipher = ciphers[i].id;
- sess.keylen = ciphers[i].keylen;
- sess.mac = 0;
- if (ioctl(fd, CIOCGSESSION, &sess) != -1 &&
- ioctl(fd, CIOCFSESSION, &sess.ses) != -1)
+ if ((fd = open_cryptodev_fd()) < 0) {
+ *cnids = NULL;
+ return (0);
+ }
+ memset(op, 0, sizeof(struct session_op));
+ key = (caddr_t) "123456789abcdefghijklmno";
+ op->algo_size = strlen(algo_map_tbl[ciphers[i].id]);
+ op->key_size = ciphers[i].keylen;
+ op->hmackey_size = 0;
+ memcpy(op->data, algo_map_tbl[ciphers[i].id], op->algo_size);
+ op->data[op->algo_size++] = '\0';
+ memcpy(op->data + op->algo_size, key, op->key_size);
+
+ if (ioctl(fd, CIOCGSESSION, op) != -1)
nids[count++] = ciphers[i].nid;
+ close(fd);
}
- close(fd);
if (count > 0)
*cnids = nids;
@@ -318,26 +375,34 @@
get_cryptodev_digests(const int **cnids)
{
static int nids[CRYPTO_ALGORITHM_MAX];
- struct session_op sess;
+ char data[100];
+ struct session_op *op = (struct session_op *)data;
int fd, i, count = 0;
+ char *mackey = NULL;
- if ((fd = get_dev_crypto()) < 0) {
- *cnids = NULL;
- return (0);
- }
- memset(&sess, 0, sizeof(sess));
- sess.mackey = (caddr_t)"123456789abcdefghijklmno";
for (i = 0; digests[i].id && count < CRYPTO_ALGORITHM_MAX; i++) {
if (digests[i].nid == NID_undef)
continue;
- sess.mac = digests[i].id;
- sess.mackeylen = digests[i].keylen;
- sess.cipher = 0;
- if (ioctl(fd, CIOCGSESSION, &sess) != -1 &&
- ioctl(fd, CIOCFSESSION, &sess.ses) != -1)
+ if ((fd = open_cryptodev_fd()) < 0) {
+ *cnids = NULL;
+ return (0);
+ }
+
+ memset(op, 0, sizeof(struct session_op));
+ op->algo_size = strlen(algo_map_tbl[digests[i].id]);
+ op->key_size = 0;
+ op->hmackey_size = digests[i].keylen;
+ memcpy(op->data, algo_map_tbl[digests[i].id], op->algo_size);
+ if (op->hmackey_size)
+ mackey = (caddr_t) "123456789abcdefghijklmno";
+ op->data[op->algo_size++] = '\0';
+ memcpy(op->data + op->algo_size, mackey, op->hmackey_size);
+
+ if (ioctl(fd, CIOCGSESSION, op) != -1)
nids[count++] = digests[i].nid;
+ close(fd);
+
}
- close(fd);
if (count > 0)
*cnids = nids;
@@ -396,13 +461,19 @@
#endif
}
+
static int
cryptodev_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, unsigned int inl)
+ const unsigned char *in, unsigned int inl)
{
- struct crypt_op cryp;
+
struct dev_crypto_state *state = ctx->cipher_data;
- struct session_op *sess = &state->d_sess;
+ char dataop[100];
+ struct crypt_op *cryp = (struct crypt_op *) dataop;
+ int ret;
+ struct iovec iov[3];
+ int nr_segs;
+
void *iiv;
unsigned char save_iv[EVP_MAX_IV_LENGTH];
@@ -413,31 +484,35 @@
if ((inl % ctx->cipher->block_size) != 0)
return (0);
- memset(&cryp, 0, sizeof(cryp));
+ memset(cryp, 0, sizeof(struct crypt_op));
- cryp.ses = sess->ses;
- cryp.flags = 0;
- cryp.len = inl;
- cryp.src = (caddr_t) in;
- cryp.dst = (caddr_t) out;
- cryp.mac = 0;
+ cryp->iv_size = ctx->cipher->iv_len;
+ cryp->assoc_size = 0;
- cryp.op = ctx->encrypt ? COP_ENCRYPT : COP_DECRYPT;
+ cryp->op = ctx->encrypt ? COP_ENCRYPT : COP_DECRYPT;
if (ctx->cipher->iv_len) {
- cryp.iv = (caddr_t) ctx->iv;
+ memcpy(cryp->data, ctx->iv, cryp->iv_size);
if (!ctx->encrypt) {
iiv = (void *) in + inl - ctx->cipher->iv_len;
memcpy(save_iv, iiv, ctx->cipher->iv_len);
}
} else
- cryp.iv = NULL;
-
- if (ioctl(state->d_fd, CIOCCRYPT, &cryp) == -1) {
- /* XXX need better errror handling
- * this can fail for a number of different reasons.
- */
- return (0);
+ cryp->iv_size = 0;
+
+ iov[0].iov_base = cryp;
+ iov[0].iov_len = sizeof(struct crypt_op) +
+ cryp->iv_size +
+ cryp->assoc_size;
+ iov[1].iov_base = in;
+ iov[1].iov_len = inl;
+ iov[2].iov_base = out;
+ nr_segs = sizeof(iov) / sizeof(struct iovec);
+
+ ret = writev(state->d_fd, iov, nr_segs);
+ if (ret) {
+ printf("Cipher failed with error = %d\n", ret);
+ return 0;
}
if (ctx->cipher->iv_len) {
@@ -447,45 +522,51 @@
iiv = save_iv;
memcpy(ctx->iv, iiv, ctx->cipher->iv_len);
}
+
return (1);
+
}
static int
cryptodev_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
- const unsigned char *iv, int enc)
+ const unsigned char *iv, int enc)
{
+
struct dev_crypto_state *state = ctx->cipher_data;
- struct session_op *sess = &state->d_sess;
+ char data[100];
+ struct session_op *op = (struct session_op *)data;
int cipher, i;
-
+
for (i = 0; ciphers[i].id; i++)
if (ctx->cipher->nid == ciphers[i].nid &&
- ctx->cipher->iv_len <= ciphers[i].ivmax &&
- ctx->key_len == ciphers[i].keylen) {
+ ctx->cipher->iv_len <= ciphers[i].ivmax &&
+ ctx->key_len == ciphers[i].keylen) {
cipher = ciphers[i].id;
break;
}
if (!ciphers[i].id) {
- state->d_fd = -1;
- return (0);
+ state->d_fd = -1;
+ return (0);
}
- memset(sess, 0, sizeof(struct session_op));
-
- if ((state->d_fd = get_dev_crypto()) < 0)
- return (0);
-
- sess->key = (unsigned char *)key;
- sess->keylen = ctx->key_len;
- sess->cipher = cipher;
+ if ((state->d_fd = open_cryptodev_fd()) < 0)
+ return (0);
- if (ioctl(state->d_fd, CIOCGSESSION, sess) == -1) {
- close(state->d_fd);
- state->d_fd = -1;
- return (0);
+ memset(op, 0, sizeof(struct session_op));
+ op->algo_size = strlen(algo_map_tbl[cipher]);
+ op->key_size = ctx->key_len;
+ memcpy(op->data, algo_map_tbl[ciphers[i].id], op->algo_size);
+ op->data[op->algo_size++] = '\0';
+ memcpy(op->data + op->algo_size, (unsigned char *) key, op->key_size);
+
+ if (ioctl(state->d_fd, CIOCGSESSION, op) == -1) {
+ close(state->d_fd);
+ state->d_fd = -1;
+ return (0);
}
return (1);
+
}
/*
@@ -495,9 +576,9 @@
static int
cryptodev_cleanup(EVP_CIPHER_CTX *ctx)
{
+
int ret = 0;
struct dev_crypto_state *state = ctx->cipher_data;
- struct session_op *sess = &state->d_sess;
if (state->d_fd < 0)
return (0);
@@ -513,15 +594,11 @@
* print messages to users of the library. hmm..
*/
- if (ioctl(state->d_fd, CIOCFSESSION, &sess->ses) == -1) {
- ret = 0;
- } else {
- ret = 1;
- }
close(state->d_fd);
state->d_fd = -1;
return (ret);
+
}
/*
@@ -616,7 +693,7 @@
*/
static int
cryptodev_engine_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
- const int **nids, int nid)
+ const int **nids, int nid)
{
if (!cipher)
return (cryptodev_usable_ciphers(nids));
@@ -678,8 +755,11 @@
static int cryptodev_digest_init(EVP_MD_CTX *ctx)
{
struct dev_crypto_state *state = ctx->md_data;
- struct session_op *sess = &state->d_sess;
+ char data[100];
+ struct session_op *sess = (struct session_op *)data;
int digest;
+ int ret;
+
if ((digest = digest_nid_to_cryptodev(ctx->digest->type)) == NID_undef){
printf("cryptodev_digest_init: Can't get digest \n");
@@ -688,16 +768,21 @@
memset(state, 0, sizeof(struct dev_crypto_state));
- if ((state->d_fd = get_dev_crypto()) < 0) {
+ if ((state->d_fd = open_cryptodev_fd()) < 0) {
printf("cryptodev_digest_init: Can't get Dev \n");
return (0);
}
- sess->mackey = state->dummy_mac_key;
- sess->mackeylen = digest_key_length(ctx->digest->type);
- sess->mac = digest;
-
- if (ioctl(state->d_fd, CIOCGSESSION, sess) < 0) {
+ memset(sess, 0, sizeof(struct session_op));
+ sess->algo_size = strlen(algo_map_tbl[digest]);
+ sess->hmackey_size = digest_key_length(ctx->digest->type);
+ memcpy(sess->data, algo_map_tbl[digest], sess->algo_size);
+ sess->data[sess->algo_size++] = '\0';
+ if (sess->hmackey_size)
+ memcpy(sess->data + sess->algo_size,
+ state->dummy_mac_key, sess->hmackey_size);
+
+ if ((ret = ioctl(state->d_fd, CIOCGSESSION, sess)) < 0) {
close(state->d_fd);
state->d_fd = -1;
printf("cryptodev_digest_init: Open session failed\n");
@@ -708,11 +793,14 @@
}
static int cryptodev_digest_update(EVP_MD_CTX *ctx, const void *data,
- size_t count)
+ size_t count)
{
- struct crypt_op cryp;
+ char datac[100];
+ struct crypt_op *cryp = (struct crypt_op *) datac;
struct dev_crypto_state *state = ctx->md_data;
- struct session_op *sess = &state->d_sess;
+ struct iovec iov[3];
+ int ret = 1;
+ int nr_segs;
if (!data || state->d_fd < 0) {
printf("cryptodev_digest_update: illegal inputs \n");
@@ -733,56 +821,65 @@
}
memcpy(state->mac_data + state->mac_len, data, count);
- state->mac_len += count;
+ state->mac_len += count;
return (1);
}
-
- memset(&cryp, 0, sizeof(cryp));
-
- cryp.ses = sess->ses;
- cryp.flags = 0;
- cryp.len = count;
- cryp.src = (caddr_t) data;
- cryp.dst = NULL;
- cryp.mac = state->digest_res;
-
- if (ioctl(state->d_fd, CIOCCRYPT, &cryp) < 0) {
- printf("cryptodev_digest_update: digest failed xxxxxxx\n");
+ memset(cryp, 0, sizeof(struct crypt_op));
+
+ cryp->iv_size = 0;
+ cryp->assoc_size = 0;
+ iov[0].iov_base = cryp;
+ iov[0].iov_len = sizeof(struct crypt_op) +
+ cryp->iv_size +
+ cryp->assoc_size;
+ iov[1].iov_base = data;
+ iov[1].iov_len = count;
+ iov[2].iov_base = state->digest_res;
+ nr_segs = sizeof(iov) / sizeof(struct iovec);
+
+ ret = writev(state->d_fd, iov, nr_segs);
+ if (ret) {
+ printf("cryptodev_digest_update: digest failed\n");
return (0);
}
+
return (1);
}
static int cryptodev_digest_final(EVP_MD_CTX *ctx, unsigned char *md)
{
- struct crypt_op cryp;
+ char dataop[100];
+ struct crypt_op *cryp = (struct crypt_op *) dataop;
struct dev_crypto_state *state = ctx->md_data;
- struct session_op *sess = &state->d_sess;
-
+ struct iovec iov[3];
int ret = 1;
-
+ int nr_segs;
+
if (!md || state->d_fd < 0) {
printf("cryptodev_digest_final: illegal input\n");
return(0);
}
if (! (ctx->flags & EVP_MD_CTX_FLAG_ONESHOT) ) {
/* if application doesn't support one buffer */
- memset(&cryp, 0, sizeof(cryp));
+ memset(cryp, 0, sizeof(struct crypt_op));
- cryp.ses = sess->ses;
- cryp.flags = 0;
- cryp.len = state->mac_len;
- cryp.src = state->mac_data;
- cryp.dst = NULL;
- cryp.mac = md;
-
- if (ioctl(state->d_fd, CIOCCRYPT, &cryp) < 0) {
- printf("cryptodev_digest_final: digest failed
nnnnnnn\n");
+ cryp->iv_size = 0;
+ cryp->assoc_size = 0;
+ iov[0].iov_base = cryp;
+ iov[0].iov_len = sizeof(struct crypt_op) +
+ cryp->iv_size +
+ cryp->assoc_size;
+ iov[1].iov_base = state->mac_data;
+ iov[1].iov_len = state->mac_len;
+ iov[2].iov_base = md;
+ nr_segs = sizeof(iov) / sizeof(struct iovec);
+
+ ret = writev(state->d_fd, iov, nr_segs);
+ if (ret) {
+ printf("cryptodev_digest_final: digest failed Final\n");
return (0);
}
@@ -799,7 +896,6 @@
{
int ret = 1;
struct dev_crypto_state *state = ctx->md_data;
- struct session_op *sess = &state->d_sess;
if (state->d_fd < 0) {
printf("cryptodev_digest_cleanup: illegal input\n");
@@ -815,13 +911,7 @@
if (state->copy)
return 1;
- if (ioctl(state->d_fd, CIOCFSESSION, &sess->ses) < 0) {
- printf("cryptodev_digest_cleanup: failed to close session\n");
- ret = 0;
- } else {
- ret = 1;
- }
- close(state->d_fd);
+ close(state->d_fd);
state->d_fd = -1;
return (ret);
@@ -880,7 +970,7 @@
static int
cryptodev_engine_digests(ENGINE *e, const EVP_MD **digest,
- const int **nids, int nid)
+ const int **nids, int nid)
{
if (!digest)
return (cryptodev_usable_digests(nids));
@@ -1336,6 +1426,8 @@
if (engine == NULL)
return;
+ /*Asymmetic Crypto Algorithms not yet supported by Linux Cryptodev*/
+#ifndef CRYPTODEV_LINUX
if ((fd = get_dev_crypto()) < 0) {
ENGINE_free(engine);
return;
@@ -1350,7 +1442,7 @@
return;
}
close(fd);
-
+#endif
if (!ENGINE_set_id(engine, "cryptodev") ||
!ENGINE_set_name(engine, "BSD cryptodev engine") ||
!ENGINE_set_ciphers(engine, cryptodev_engine_ciphers) ||
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