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52 #include <sys/ioctl.h>
53 #include <crypto/cryptodev.h>
55 #include <openssl/evp.h>
56 #include <openssl/objects.h>
60 // longest key supported in hardware
64 static int dev_failed;
66 static void err(const char *str)
68 fprintf(stderr,"%s: errno %d\n",str,errno);
71 static int dev_crypto_init(EVP_CIPHER_CTX *ctx)
79 if ((cryptodev_fd=open("/dev/crypto",O_RDWR,0)) < 0)
85 if (ioctl(cryptodev_fd,CRIOGET,&fd) == -1)
87 err("CRIOGET failed");
94 if(!ctx->c.dev_crypto)
96 ctx->c.dev_crypto=OPENSSL_malloc(sizeof *ctx->c.dev_crypto);
97 memset(ctx->c.dev_crypto,'\0',sizeof *ctx->c.dev_crypto);
98 ctx->c.dev_crypto->key=OPENSSL_malloc(MAX_HW_KEY);
104 static int dev_crypto_cleanup(EVP_CIPHER_CTX *ctx)
106 if(ioctl(fd,CIOCFSESSION,ctx->c.dev_crypto->ses) == -1)
107 err("CIOCFSESSION failed");
109 OPENSSL_free(ctx->c.dev_crypto->key);
110 OPENSSL_free(ctx->c.dev_crypto);
111 ctx->c.dev_crypto=NULL;
116 // FIXME: there should be some non-fatal way to report we fell back to s/w?
117 static int dev_crypto_des_ede3_init_key(EVP_CIPHER_CTX *ctx,
118 const unsigned char *key,
119 const unsigned char *iv, int enc)
121 if(!dev_crypto_init(ctx))
123 // fall back to using software...
124 ctx->cipher=EVP_des_ede3_cbc();
125 return ctx->cipher->init(ctx,key,iv,enc);
127 memcpy(ctx->c.dev_crypto->key,key,24);
129 ctx->c.dev_crypto->cipher=CRYPTO_3DES_CBC;
130 ctx->c.dev_crypto->mac=0;
131 ctx->c.dev_crypto->keylen=24;
133 if (ioctl(fd,CIOCGSESSION,ctx->c.dev_crypto) == -1)
135 err("CIOCGSESSION failed");
136 // fall back to using software...
137 dev_crypto_cleanup(ctx);
138 ctx->cipher=EVP_des_ede3_cbc();
139 return ctx->cipher->init(ctx,key,iv,enc);
144 static int dev_crypto_des_ede3_cbc_cipher(EVP_CIPHER_CTX *ctx,
146 const unsigned char *in,
149 struct crypt_op cryp;
152 assert(ctx->c.dev_crypto);
155 memset(&cryp,'\0',sizeof cryp);
156 cryp.ses=ctx->c.dev_crypto->ses;
157 cryp.op=ctx->encrypt ? COP_ENCRYPT : COP_DECRYPT;
159 // cryp.len=((inl+7)/8)*8;
161 assert((inl&7) == 0);
162 cryp.src=(caddr_t)in;
163 cryp.dst=(caddr_t)out;
165 cryp.iv=(caddr_t)ctx->iv;
168 memcpy(lb,&in[cryp.len-8],8);
170 if (ioctl(fd, CIOCCRYPT, &cryp) == -1)
172 err("CIOCCRYPT failed");
178 memcpy(ctx->iv,&out[cryp.len-8],8);
180 memcpy(ctx->iv,lb,8);
185 BLOCK_CIPHER_def_cbc(dev_crypto_des_ede3, des_ede,NID_des_ede3, 8, 24, 8,
186 0, dev_crypto_des_ede3_init_key,
188 EVP_CIPHER_set_asn1_iv,
189 EVP_CIPHER_get_asn1_iv,