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[CRYPTO] tcrypt: Use async blkcipher interface
This patch converts the tcrypt module to use the asynchronous block cipher interface. As all synchronous block ciphers can be used through the async interface, tcrypt is still able to test them. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu
parent
32e3983fe5
commit
6158efc090
121
crypto/tcrypt.c
121
crypto/tcrypt.c
@ -57,6 +57,11 @@
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#define ENCRYPT 1
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#define DECRYPT 0
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struct tcrypt_result {
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struct completion completion;
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int err;
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};
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static unsigned int IDX[8] = { IDX1, IDX2, IDX3, IDX4, IDX5, IDX6, IDX7, IDX8 };
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/*
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@ -84,6 +89,17 @@ static void hexdump(unsigned char *buf, unsigned int len)
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printk("\n");
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}
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static void tcrypt_complete(struct crypto_async_request *req, int err)
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{
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struct tcrypt_result *res = req->data;
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if (err == -EINPROGRESS)
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return;
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res->err = err;
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complete(&res->completion);
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}
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static void test_hash(char *algo, struct hash_testvec *template,
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unsigned int tcount)
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{
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@ -203,15 +219,14 @@ static void test_cipher(char *algo, int enc,
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{
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unsigned int ret, i, j, k, temp;
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unsigned int tsize;
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unsigned int iv_len;
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unsigned int len;
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char *q;
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struct crypto_blkcipher *tfm;
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struct crypto_ablkcipher *tfm;
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char *key;
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struct cipher_testvec *cipher_tv;
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struct blkcipher_desc desc;
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struct ablkcipher_request *req;
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struct scatterlist sg[8];
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const char *e;
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struct tcrypt_result result;
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if (enc == ENCRYPT)
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e = "encryption";
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@ -232,15 +247,24 @@ static void test_cipher(char *algo, int enc,
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memcpy(tvmem, template, tsize);
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cipher_tv = (void *)tvmem;
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tfm = crypto_alloc_blkcipher(algo, 0, CRYPTO_ALG_ASYNC);
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init_completion(&result.completion);
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tfm = crypto_alloc_ablkcipher(algo, 0, 0);
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if (IS_ERR(tfm)) {
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printk("failed to load transform for %s: %ld\n", algo,
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PTR_ERR(tfm));
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return;
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}
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desc.tfm = tfm;
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desc.flags = 0;
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req = ablkcipher_request_alloc(tfm, GFP_KERNEL);
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if (!req) {
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printk("failed to allocate request for %s\n", algo);
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goto out;
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}
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ablkcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
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tcrypt_complete, &result);
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j = 0;
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for (i = 0; i < tcount; i++) {
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@ -249,17 +273,17 @@ static void test_cipher(char *algo, int enc,
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printk("test %u (%d bit key):\n",
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j, cipher_tv[i].klen * 8);
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crypto_blkcipher_clear_flags(tfm, ~0);
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crypto_ablkcipher_clear_flags(tfm, ~0);
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if (cipher_tv[i].wk)
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crypto_blkcipher_set_flags(
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crypto_ablkcipher_set_flags(
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tfm, CRYPTO_TFM_REQ_WEAK_KEY);
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key = cipher_tv[i].key;
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ret = crypto_blkcipher_setkey(tfm, key,
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cipher_tv[i].klen);
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ret = crypto_ablkcipher_setkey(tfm, key,
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cipher_tv[i].klen);
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if (ret) {
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printk("setkey() failed flags=%x\n",
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crypto_blkcipher_get_flags(tfm));
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crypto_ablkcipher_get_flags(tfm));
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if (!cipher_tv[i].fail)
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goto out;
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@ -268,19 +292,28 @@ static void test_cipher(char *algo, int enc,
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sg_set_buf(&sg[0], cipher_tv[i].input,
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cipher_tv[i].ilen);
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iv_len = crypto_blkcipher_ivsize(tfm);
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if (iv_len)
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crypto_blkcipher_set_iv(tfm, cipher_tv[i].iv,
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iv_len);
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ablkcipher_request_set_crypt(req, sg, sg,
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cipher_tv[i].ilen,
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cipher_tv[i].iv);
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len = cipher_tv[i].ilen;
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ret = enc ?
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crypto_blkcipher_encrypt(&desc, sg, sg, len) :
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crypto_blkcipher_decrypt(&desc, sg, sg, len);
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crypto_ablkcipher_encrypt(req) :
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crypto_ablkcipher_decrypt(req);
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if (ret) {
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printk("%s () failed flags=%x\n", e,
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desc.flags);
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switch (ret) {
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case 0:
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break;
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case -EINPROGRESS:
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case -EBUSY:
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ret = wait_for_completion_interruptible(
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&result.completion);
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if (!ret && !((ret = result.err))) {
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INIT_COMPLETION(result.completion);
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break;
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}
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/* fall through */
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default:
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printk("%s () failed err=%d\n", e, -ret);
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goto out;
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}
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@ -303,17 +336,17 @@ static void test_cipher(char *algo, int enc,
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printk("test %u (%d bit key):\n",
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j, cipher_tv[i].klen * 8);
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crypto_blkcipher_clear_flags(tfm, ~0);
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crypto_ablkcipher_clear_flags(tfm, ~0);
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if (cipher_tv[i].wk)
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crypto_blkcipher_set_flags(
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crypto_ablkcipher_set_flags(
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tfm, CRYPTO_TFM_REQ_WEAK_KEY);
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key = cipher_tv[i].key;
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ret = crypto_blkcipher_setkey(tfm, key,
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cipher_tv[i].klen);
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ret = crypto_ablkcipher_setkey(tfm, key,
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cipher_tv[i].klen);
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if (ret) {
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printk("setkey() failed flags=%x\n",
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crypto_blkcipher_get_flags(tfm));
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crypto_ablkcipher_get_flags(tfm));
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if (!cipher_tv[i].fail)
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goto out;
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@ -329,19 +362,28 @@ static void test_cipher(char *algo, int enc,
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cipher_tv[i].tap[k]);
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}
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iv_len = crypto_blkcipher_ivsize(tfm);
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if (iv_len)
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crypto_blkcipher_set_iv(tfm, cipher_tv[i].iv,
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iv_len);
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ablkcipher_request_set_crypt(req, sg, sg,
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cipher_tv[i].ilen,
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cipher_tv[i].iv);
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len = cipher_tv[i].ilen;
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ret = enc ?
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crypto_blkcipher_encrypt(&desc, sg, sg, len) :
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crypto_blkcipher_decrypt(&desc, sg, sg, len);
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crypto_ablkcipher_encrypt(req) :
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crypto_ablkcipher_decrypt(req);
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if (ret) {
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printk("%s () failed flags=%x\n", e,
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desc.flags);
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switch (ret) {
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case 0:
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break;
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case -EINPROGRESS:
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case -EBUSY:
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ret = wait_for_completion_interruptible(
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&result.completion);
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if (!ret && !((ret = result.err))) {
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INIT_COMPLETION(result.completion);
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break;
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}
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/* fall through */
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default:
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printk("%s () failed err=%d\n", e, -ret);
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goto out;
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}
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@ -360,7 +402,8 @@ static void test_cipher(char *algo, int enc,
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}
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out:
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crypto_free_blkcipher(tfm);
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crypto_free_ablkcipher(tfm);
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ablkcipher_request_free(req);
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}
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static int test_cipher_jiffies(struct blkcipher_desc *desc, int enc, char *p,
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@ -832,7 +875,7 @@ static void test_available(void)
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while (*name) {
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printk("alg %s ", *name);
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printk(crypto_has_alg(*name, 0, CRYPTO_ALG_ASYNC) ?
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printk(crypto_has_alg(*name, 0, 0) ?
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"found\n" : "not found\n");
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name++;
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}
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