[CRYPTO] tcrypt: Use HMAC template and hash interface
Herbert Xu [Sat, 19 Aug 2006 11:38:49 +0000 (21:38 +1000)]
This patch converts tcrypt to use the new HMAC template rather than the
hard-coded version of HMAC.  It also converts all digest users to use
the new cipher interface.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

crypto/tcrypt.c
crypto/tcrypt.h

index 5e22780..840ab8b 100644 (file)
@@ -88,9 +88,11 @@ static void test_hash(char *algo, struct hash_testvec *template,
        unsigned int i, j, k, temp;
        struct scatterlist sg[8];
        char result[64];
-       struct crypto_tfm *tfm;
+       struct crypto_hash *tfm;
+       struct hash_desc desc;
        struct hash_testvec *hash_tv;
        unsigned int tsize;
+       int ret;
 
        printk("\ntesting %s\n", algo);
 
@@ -104,27 +106,42 @@ static void test_hash(char *algo, struct hash_testvec *template,
 
        memcpy(tvmem, template, tsize);
        hash_tv = (void *)tvmem;
-       tfm = crypto_alloc_tfm(algo, 0);
-       if (tfm == NULL) {
-               printk("failed to load transform for %s\n", algo);
+
+       tfm = crypto_alloc_hash(algo, 0, CRYPTO_ALG_ASYNC);
+       if (IS_ERR(tfm)) {
+               printk("failed to load transform for %s: %ld\n", algo,
+                      PTR_ERR(tfm));
                return;
        }
 
+       desc.tfm = tfm;
+       desc.flags = 0;
+
        for (i = 0; i < tcount; i++) {
                printk("test %u:\n", i + 1);
                memset(result, 0, 64);
 
                sg_set_buf(&sg[0], hash_tv[i].plaintext, hash_tv[i].psize);
 
-               crypto_digest_init(tfm);
-               crypto_digest_setkey(tfm, hash_tv[i].key, hash_tv[i].ksize);
-               crypto_digest_update(tfm, sg, 1);
-               crypto_digest_final(tfm, result);
+               if (hash_tv[i].ksize) {
+                       ret = crypto_hash_setkey(tfm, hash_tv[i].key,
+                                                hash_tv[i].ksize);
+                       if (ret) {
+                               printk("setkey() failed ret=%d\n", ret);
+                               goto out;
+                       }
+               }
+
+               ret = crypto_hash_digest(&desc, sg, hash_tv[i].psize, result);
+               if (ret) {
+                       printk("digest () failed ret=%d\n", ret);
+                       goto out;
+               }
 
-               hexdump(result, crypto_tfm_alg_digestsize(tfm));
+               hexdump(result, crypto_hash_digestsize(tfm));
                printk("%s\n",
                       memcmp(result, hash_tv[i].digest,
-                             crypto_tfm_alg_digestsize(tfm)) ?
+                             crypto_hash_digestsize(tfm)) ?
                       "fail" : "pass");
        }
 
@@ -150,105 +167,35 @@ static void test_hash(char *algo, struct hash_testvec *template,
                                            hash_tv[i].tap[k]);
                        }
 
-                       crypto_digest_digest(tfm, sg, hash_tv[i].np, result);
-
-                       hexdump(result, crypto_tfm_alg_digestsize(tfm));
-                       printk("%s\n",
-                              memcmp(result, hash_tv[i].digest,
-                                     crypto_tfm_alg_digestsize(tfm)) ?
-                              "fail" : "pass");
-               }
-       }
-
-       crypto_free_tfm(tfm);
-}
-
-
-#ifdef CONFIG_CRYPTO_HMAC
-
-static void test_hmac(char *algo, struct hmac_testvec *template,
-                     unsigned int tcount)
-{
-       unsigned int i, j, k, temp;
-       struct scatterlist sg[8];
-       char result[64];
-       struct crypto_tfm *tfm;
-       struct hmac_testvec *hmac_tv;
-       unsigned int tsize, klen;
-
-       tfm = crypto_alloc_tfm(algo, 0);
-       if (tfm == NULL) {
-               printk("failed to load transform for %s\n", algo);
-               return;
-       }
-
-       printk("\ntesting hmac_%s\n", algo);
+                       if (hash_tv[i].ksize) {
+                               ret = crypto_hash_setkey(tfm, hash_tv[i].key,
+                                                        hash_tv[i].ksize);
 
-       tsize = sizeof(struct hmac_testvec);
-       tsize *= tcount;
-       if (tsize > TVMEMSIZE) {
-               printk("template (%u) too big for tvmem (%u)\n", tsize,
-                      TVMEMSIZE);
-               goto out;
-       }
-
-       memcpy(tvmem, template, tsize);
-       hmac_tv = (void *)tvmem;
-
-       for (i = 0; i < tcount; i++) {
-               printk("test %u:\n", i + 1);
-               memset(result, 0, sizeof (result));
-
-               klen = hmac_tv[i].ksize;
-               sg_set_buf(&sg[0], hmac_tv[i].plaintext, hmac_tv[i].psize);
-
-               crypto_hmac(tfm, hmac_tv[i].key, &klen, sg, 1, result);
-
-               hexdump(result, crypto_tfm_alg_digestsize(tfm));
-               printk("%s\n",
-                      memcmp(result, hmac_tv[i].digest,
-                             crypto_tfm_alg_digestsize(tfm)) ? "fail" :
-                      "pass");
-       }
-
-       printk("\ntesting hmac_%s across pages\n", algo);
-
-       memset(xbuf, 0, XBUFSIZE);
-
-       j = 0;
-       for (i = 0; i < tcount; i++) {
-               if (hmac_tv[i].np) {
-                       j++;
-                       printk("test %u:\n",j);
-                       memset(result, 0, 64);
-
-                       temp = 0;
-                       klen = hmac_tv[i].ksize;
-                       for (k = 0; k < hmac_tv[i].np; k++) {
-                               memcpy(&xbuf[IDX[k]],
-                                      hmac_tv[i].plaintext + temp,
-                                      hmac_tv[i].tap[k]);
-                               temp += hmac_tv[i].tap[k];
-                               sg_set_buf(&sg[k], &xbuf[IDX[k]],
-                                           hmac_tv[i].tap[k]);
+                               if (ret) {
+                                       printk("setkey() failed ret=%d\n", ret);
+                                       goto out;
+                               }
                        }
 
-                       crypto_hmac(tfm, hmac_tv[i].key, &klen, sg,
-                                   hmac_tv[i].np, result);
-                       hexdump(result, crypto_tfm_alg_digestsize(tfm));
+                       ret = crypto_hash_digest(&desc, sg, hash_tv[i].psize,
+                                                result);
+                       if (ret) {
+                               printk("digest () failed ret=%d\n", ret);
+                               goto out;
+                       }
 
+                       hexdump(result, crypto_hash_digestsize(tfm));
                        printk("%s\n",
-                              memcmp(result, hmac_tv[i].digest,
-                                     crypto_tfm_alg_digestsize(tfm)) ?
+                              memcmp(result, hash_tv[i].digest,
+                                     crypto_hash_digestsize(tfm)) ?
                               "fail" : "pass");
                }
        }
+
 out:
-       crypto_free_tfm(tfm);
+       crypto_free_hash(tfm);
 }
 
-#endif /* CONFIG_CRYPTO_HMAC */
-
 static void test_cipher(char *algo, int enc,
                        struct cipher_testvec *template, unsigned int tcount)
 {
@@ -570,97 +517,202 @@ out:
        crypto_free_blkcipher(tfm);
 }
 
-static void test_digest_jiffies(struct crypto_tfm *tfm, char *p, int blen,
-                               int plen, char *out, int sec)
+static int test_hash_jiffies_digest(struct hash_desc *desc, char *p, int blen,
+                                   char *out, int sec)
+{
+       struct scatterlist sg[1];
+       unsigned long start, end;
+       int bcount;
+       int ret;
+
+       for (start = jiffies, end = start + sec * HZ, bcount = 0;
+            time_before(jiffies, end); bcount++) {
+               sg_set_buf(sg, p, blen);
+               ret = crypto_hash_digest(desc, sg, blen, out);
+               if (ret)
+                       return ret;
+       }
+
+       printk("%6u opers/sec, %9lu bytes/sec\n",
+              bcount / sec, ((long)bcount * blen) / sec);
+
+       return 0;
+}
+
+static int test_hash_jiffies(struct hash_desc *desc, char *p, int blen,
+                            int plen, char *out, int sec)
 {
        struct scatterlist sg[1];
        unsigned long start, end;
        int bcount, pcount;
+       int ret;
+
+       if (plen == blen)
+               return test_hash_jiffies_digest(desc, p, blen, out, sec);
 
        for (start = jiffies, end = start + sec * HZ, bcount = 0;
             time_before(jiffies, end); bcount++) {
-               crypto_digest_init(tfm);
+               ret = crypto_hash_init(desc);
+               if (ret)
+                       return ret;
                for (pcount = 0; pcount < blen; pcount += plen) {
                        sg_set_buf(sg, p + pcount, plen);
-                       crypto_digest_update(tfm, sg, 1);
+                       ret = crypto_hash_update(desc, sg, plen);
+                       if (ret)
+                               return ret;
                }
                /* we assume there is enough space in 'out' for the result */
-               crypto_digest_final(tfm, out);
+               ret = crypto_hash_final(desc, out);
+               if (ret)
+                       return ret;
        }
 
        printk("%6u opers/sec, %9lu bytes/sec\n",
               bcount / sec, ((long)bcount * blen) / sec);
 
-       return;
+       return 0;
+}
+
+static int test_hash_cycles_digest(struct hash_desc *desc, char *p, int blen,
+                                  char *out)
+{
+       struct scatterlist sg[1];
+       unsigned long cycles = 0;
+       int i;
+       int ret;
+
+       local_bh_disable();
+       local_irq_disable();
+
+       /* Warm-up run. */
+       for (i = 0; i < 4; i++) {
+               sg_set_buf(sg, p, blen);
+               ret = crypto_hash_digest(desc, sg, blen, out);
+               if (ret)
+                       goto out;
+       }
+
+       /* The real thing. */
+       for (i = 0; i < 8; i++) {
+               cycles_t start, end;
+
+               start = get_cycles();
+
+               sg_set_buf(sg, p, blen);
+               ret = crypto_hash_digest(desc, sg, blen, out);
+               if (ret)
+                       goto out;
+
+               end = get_cycles();
+
+               cycles += end - start;
+       }
+
+out:
+       local_irq_enable();
+       local_bh_enable();
+
+       if (ret)
+               return ret;
+
+       printk("%6lu cycles/operation, %4lu cycles/byte\n",
+              cycles / 8, cycles / (8 * blen));
+
+       return 0;
 }
 
-static void test_digest_cycles(struct crypto_tfm *tfm, char *p, int blen,
-                              int plen, char *out)
+static int test_hash_cycles(struct hash_desc *desc, char *p, int blen,
+                           int plen, char *out)
 {
        struct scatterlist sg[1];
        unsigned long cycles = 0;
        int i, pcount;
+       int ret;
+
+       if (plen == blen)
+               return test_hash_cycles_digest(desc, p, blen, out);
 
        local_bh_disable();
        local_irq_disable();
 
        /* Warm-up run. */
        for (i = 0; i < 4; i++) {
-               crypto_digest_init(tfm);
+               ret = crypto_hash_init(desc);
+               if (ret)
+                       goto out;
                for (pcount = 0; pcount < blen; pcount += plen) {
                        sg_set_buf(sg, p + pcount, plen);
-                       crypto_digest_update(tfm, sg, 1);
+                       ret = crypto_hash_update(desc, sg, plen);
+                       if (ret)
+                               goto out;
                }
-               crypto_digest_final(tfm, out);
+               crypto_hash_final(desc, out);
+               if (ret)
+                       goto out;
        }
 
        /* The real thing. */
        for (i = 0; i < 8; i++) {
                cycles_t start, end;
 
-               crypto_digest_init(tfm);
-
                start = get_cycles();
 
+               ret = crypto_hash_init(desc);
+               if (ret)
+                       goto out;
                for (pcount = 0; pcount < blen; pcount += plen) {
                        sg_set_buf(sg, p + pcount, plen);
-                       crypto_digest_update(tfm, sg, 1);
+                       ret = crypto_hash_update(desc, sg, plen);
+                       if (ret)
+                               goto out;
                }
-               crypto_digest_final(tfm, out);
+               ret = crypto_hash_final(desc, out);
+               if (ret)
+                       goto out;
 
                end = get_cycles();
 
                cycles += end - start;
        }
 
+out:
        local_irq_enable();
        local_bh_enable();
 
+       if (ret)
+               return ret;
+
        printk("%6lu cycles/operation, %4lu cycles/byte\n",
               cycles / 8, cycles / (8 * blen));
 
-       return;
+       return 0;
 }
 
-static void test_digest_speed(char *algo, unsigned int sec,
-                             struct digest_speed *speed)
+static void test_hash_speed(char *algo, unsigned int sec,
+                             struct hash_speed *speed)
 {
-       struct crypto_tfm *tfm;
+       struct crypto_hash *tfm;
+       struct hash_desc desc;
        char output[1024];
        int i;
+       int ret;
 
        printk("\ntesting speed of %s\n", algo);
 
-       tfm = crypto_alloc_tfm(algo, 0);
+       tfm = crypto_alloc_hash(algo, 0, CRYPTO_ALG_ASYNC);
 
-       if (tfm == NULL) {
-               printk("failed to load transform for %s\n", algo);
+       if (IS_ERR(tfm)) {
+               printk("failed to load transform for %s: %ld\n", algo,
+                      PTR_ERR(tfm));
                return;
        }
 
-       if (crypto_tfm_alg_digestsize(tfm) > sizeof(output)) {
+       desc.tfm = tfm;
+       desc.flags = 0;
+
+       if (crypto_hash_digestsize(tfm) > sizeof(output)) {
                printk("digestsize(%u) > outputbuffer(%zu)\n",
-                      crypto_tfm_alg_digestsize(tfm), sizeof(output));
+                      crypto_hash_digestsize(tfm), sizeof(output));
                goto out;
        }
 
@@ -677,13 +729,20 @@ static void test_digest_speed(char *algo, unsigned int sec,
                memset(tvmem, 0xff, speed[i].blen);
 
                if (sec)
-                       test_digest_jiffies(tfm, tvmem, speed[i].blen, speed[i].plen, output, sec);
+                       ret = test_hash_jiffies(&desc, tvmem, speed[i].blen,
+                                               speed[i].plen, output, sec);
                else
-                       test_digest_cycles(tfm, tvmem, speed[i].blen, speed[i].plen, output);
+                       ret = test_hash_cycles(&desc, tvmem, speed[i].blen,
+                                              speed[i].plen, output);
+
+               if (ret) {
+                       printk("hashing failed ret=%d\n", ret);
+                       break;
+               }
        }
 
 out:
-       crypto_free_tfm(tfm);
+       crypto_free_hash(tfm);
 }
 
 static void test_deflate(void)
@@ -911,11 +970,12 @@ static void do_test(void)
                test_hash("tgr128", tgr128_tv_template, TGR128_TEST_VECTORS);
                test_deflate();
                test_hash("crc32c", crc32c_tv_template, CRC32C_TEST_VECTORS);
-#ifdef CONFIG_CRYPTO_HMAC
-               test_hmac("md5", hmac_md5_tv_template, HMAC_MD5_TEST_VECTORS);
-               test_hmac("sha1", hmac_sha1_tv_template, HMAC_SHA1_TEST_VECTORS);
-               test_hmac("sha256", hmac_sha256_tv_template, HMAC_SHA256_TEST_VECTORS);
-#endif
+               test_hash("hmac(md5)", hmac_md5_tv_template,
+                         HMAC_MD5_TEST_VECTORS);
+               test_hash("hmac(sha1)", hmac_sha1_tv_template,
+                         HMAC_SHA1_TEST_VECTORS);
+               test_hash("hmac(sha256)", hmac_sha256_tv_template,
+                         HMAC_SHA256_TEST_VECTORS);
 
                test_hash("michael_mic", michael_mic_tv_template, MICHAEL_MIC_TEST_VECTORS);
                break;
@@ -1106,20 +1166,21 @@ static void do_test(void)
                            XETA_DEC_TEST_VECTORS);
                break;
 
-#ifdef CONFIG_CRYPTO_HMAC
        case 100:
-               test_hmac("md5", hmac_md5_tv_template, HMAC_MD5_TEST_VECTORS);
+               test_hash("hmac(md5)", hmac_md5_tv_template,
+                         HMAC_MD5_TEST_VECTORS);
                break;
 
        case 101:
-               test_hmac("sha1", hmac_sha1_tv_template, HMAC_SHA1_TEST_VECTORS);
+               test_hash("hmac(sha1)", hmac_sha1_tv_template,
+                         HMAC_SHA1_TEST_VECTORS);
                break;
 
        case 102:
-               test_hmac("sha256", hmac_sha256_tv_template, HMAC_SHA256_TEST_VECTORS);
+               test_hash("hmac(sha256)", hmac_sha256_tv_template,
+                         HMAC_SHA256_TEST_VECTORS);
                break;
 
-#endif
 
        case 200:
                test_cipher_speed("ecb(aes)", ENCRYPT, sec, NULL, 0,
@@ -1188,51 +1249,51 @@ static void do_test(void)
                /* fall through */
 
        case 301:
-               test_digest_speed("md4", sec, generic_digest_speed_template);
+               test_hash_speed("md4", sec, generic_hash_speed_template);
                if (mode > 300 && mode < 400) break;
 
        case 302:
-               test_digest_speed("md5", sec, generic_digest_speed_template);
+               test_hash_speed("md5", sec, generic_hash_speed_template);
                if (mode > 300 && mode < 400) break;
 
        case 303:
-               test_digest_speed("sha1", sec, generic_digest_speed_template);
+               test_hash_speed("sha1", sec, generic_hash_speed_template);
                if (mode > 300 && mode < 400) break;
 
        case 304:
-               test_digest_speed("sha256", sec, generic_digest_speed_template);
+               test_hash_speed("sha256", sec, generic_hash_speed_template);
                if (mode > 300 && mode < 400) break;
 
        case 305:
-               test_digest_speed("sha384", sec, generic_digest_speed_template);
+               test_hash_speed("sha384", sec, generic_hash_speed_template);
                if (mode > 300 && mode < 400) break;
 
        case 306:
-               test_digest_speed("sha512", sec, generic_digest_speed_template);
+               test_hash_speed("sha512", sec, generic_hash_speed_template);
                if (mode > 300 && mode < 400) break;
 
        case 307:
-               test_digest_speed("wp256", sec, generic_digest_speed_template);
+               test_hash_speed("wp256", sec, generic_hash_speed_template);
                if (mode > 300 && mode < 400) break;
 
        case 308:
-               test_digest_speed("wp384", sec, generic_digest_speed_template);
+               test_hash_speed("wp384", sec, generic_hash_speed_template);
                if (mode > 300 && mode < 400) break;
 
        case 309:
-               test_digest_speed("wp512", sec, generic_digest_speed_template);
+               test_hash_speed("wp512", sec, generic_hash_speed_template);
                if (mode > 300 && mode < 400) break;
 
        case 310:
-               test_digest_speed("tgr128", sec, generic_digest_speed_template);
+               test_hash_speed("tgr128", sec, generic_hash_speed_template);
                if (mode > 300 && mode < 400) break;
 
        case 311:
-               test_digest_speed("tgr160", sec, generic_digest_speed_template);
+               test_hash_speed("tgr160", sec, generic_hash_speed_template);
                if (mode > 300 && mode < 400) break;
 
        case 312:
-               test_digest_speed("tgr192", sec, generic_digest_speed_template);
+               test_hash_speed("tgr192", sec, generic_hash_speed_template);
                if (mode > 300 && mode < 400) break;
 
        case 399:
index 408d5aa..a40c441 100644 (file)
@@ -36,16 +36,6 @@ struct hash_testvec {
        unsigned char ksize;
 };
 
-struct hmac_testvec {
-       char key[128];
-       char plaintext[128];
-       char digest[MAX_DIGEST_SIZE];
-       unsigned char tap[MAX_TAP];
-       unsigned char ksize;
-       unsigned char psize;
-       unsigned char np;
-};
-
 struct cipher_testvec {
        char key[MAX_KEYLEN] __attribute__ ((__aligned__(4)));
        char iv[MAX_IVLEN];
@@ -65,7 +55,7 @@ struct cipher_speed {
        unsigned int blen;
 };
 
-struct digest_speed {
+struct hash_speed {
        unsigned int blen;      /* buffer length */
        unsigned int plen;      /* per-update length */
 };
@@ -697,14 +687,13 @@ static struct hash_testvec tgr128_tv_template[] = {
        },
 };
 
-#ifdef CONFIG_CRYPTO_HMAC
 /*
  * HMAC-MD5 test vectors from RFC2202
  * (These need to be fixed to not use strlen).
  */
 #define HMAC_MD5_TEST_VECTORS  7
 
-static struct hmac_testvec hmac_md5_tv_template[] =
+static struct hash_testvec hmac_md5_tv_template[] =
 {
        {
                .key    = { [0 ... 15] =  0x0b },
@@ -768,7 +757,7 @@ static struct hmac_testvec hmac_md5_tv_template[] =
  */
 #define HMAC_SHA1_TEST_VECTORS 7
 
-static struct hmac_testvec hmac_sha1_tv_template[] = {
+static struct hash_testvec hmac_sha1_tv_template[] = {
        {
                .key    = { [0 ... 19] = 0x0b },
                .ksize  = 20,
@@ -833,7 +822,7 @@ static struct hmac_testvec hmac_sha1_tv_template[] = {
  */
 #define HMAC_SHA256_TEST_VECTORS       10
 
-static struct hmac_testvec hmac_sha256_tv_template[] = {
+static struct hash_testvec hmac_sha256_tv_template[] = {
        {
                .key    = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
                            0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
@@ -944,8 +933,6 @@ static struct hmac_testvec hmac_sha256_tv_template[] = {
        },
 };
 
-#endif /* CONFIG_CRYPTO_HMAC */
-
 /*
  * DES test vectors.
  */
@@ -3160,7 +3147,7 @@ static struct cipher_speed des_speed_template[] = {
 /*
  * Digest speed tests
  */
-static struct digest_speed generic_digest_speed_template[] = {
+static struct hash_speed generic_hash_speed_template[] = {
        { .blen = 16,   .plen = 16, },
        { .blen = 64,   .plen = 16, },
        { .blen = 64,   .plen = 64, },