[CRYPTO] tcrypt: Use HMAC template and hash interface

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>

2 files changed, 213 insertions, 165 deletions

diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index 5e2278069d22..840ab8be0b96 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -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:
diff --git a/crypto/tcrypt.h b/crypto/tcrypt.h
index 408d5aad5864..a40c4411729e 100644
--- a/crypto/tcrypt.h
+++ b/crypto/tcrypt.h
@@ -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, },