+
+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