diff options
| -rw-r--r-- | crypto/testmgr.c | 89 | ||||
| -rw-r--r-- | crypto/testmgr.h | 12 |
2 files changed, 101 insertions, 0 deletions
diff --git a/crypto/testmgr.c b/crypto/testmgr.c index 40c10789f7f3..adc54cfd39df 100644 --- a/crypto/testmgr.c +++ b/crypto/testmgr.c @@ -19,6 +19,7 @@ #include <linux/scatterlist.h> #include <linux/slab.h> #include <linux/string.h> +#include <crypto/rng.h> #include "internal.h" #include "testmgr.h" @@ -84,6 +85,11 @@ struct hash_test_suite { unsigned int count; }; +struct cprng_test_suite { + struct cprng_testvec *vecs; + unsigned int count; +}; + struct alg_test_desc { const char *alg; int (*test)(const struct alg_test_desc *desc, const char *driver, @@ -95,6 +101,7 @@ struct alg_test_desc { struct comp_test_suite comp; struct pcomp_test_suite pcomp; struct hash_test_suite hash; + struct cprng_test_suite cprng; } suite; }; @@ -1089,6 +1096,68 @@ static int test_pcomp(struct crypto_pcomp *tfm, return 0; } + +static int test_cprng(struct crypto_rng *tfm, struct cprng_testvec *template, + unsigned int tcount) +{ + const char *algo = crypto_tfm_alg_driver_name(crypto_rng_tfm(tfm)); + int err, i, j, seedsize; + u8 *seed; + char result[32]; + + seedsize = crypto_rng_seedsize(tfm); + + seed = kmalloc(seedsize, GFP_KERNEL); + if (!seed) { + printk(KERN_ERR "alg: cprng: Failed to allocate seed space " + "for %s\n", algo); + return -ENOMEM; + } + + for (i = 0; i < tcount; i++) { + memset(result, 0, 32); + + memcpy(seed, template[i].v, template[i].vlen); + memcpy(seed + template[i].vlen, template[i].key, + template[i].klen); + memcpy(seed + template[i].vlen + template[i].klen, + template[i].dt, template[i].dtlen); + + err = crypto_rng_reset(tfm, seed, seedsize); + if (err) { + printk(KERN_ERR "alg: cprng: Failed to reset rng " + "for %s\n", algo); + goto out; + } + + for (j = 0; j < template[i].loops; j++) { + err = crypto_rng_get_bytes(tfm, result, + template[i].rlen); + if (err != template[i].rlen) { + printk(KERN_ERR "alg: cprng: Failed to obtain " + "the correct amount of random data for " + "%s (requested %d, got %d)\n", algo, + template[i].rlen, err); + goto out; + } + } + + err = memcmp(result, template[i].result, + template[i].rlen); + if (err) { + printk(KERN_ERR "alg: cprng: Test %d failed for %s\n", + i, algo); + hexdump(result, template[i].rlen); + err = -EINVAL; + goto out; + } + } + +out: + kfree(seed); + return err; +} + static int alg_test_aead(const struct alg_test_desc *desc, const char *driver, u32 type, u32 mask) { @@ -1288,6 +1357,26 @@ out: return err; } +static int alg_test_cprng(const struct alg_test_desc *desc, const char *driver, + u32 type, u32 mask) +{ + struct crypto_rng *rng; + int err; + + rng = crypto_alloc_rng(driver, type, mask); + if (IS_ERR(rng)) { + printk(KERN_ERR "alg: cprng: Failed to load transform for %s: " + "%ld\n", driver, PTR_ERR(rng)); + return PTR_ERR(rng); + } + + err = test_cprng(rng, desc->suite.cprng.vecs, desc->suite.cprng.count); + + crypto_free_rng(rng); + + return err; +} + /* Please keep this list sorted by algorithm name. */ static const struct alg_test_desc alg_test_descs[] = { { diff --git a/crypto/testmgr.h b/crypto/testmgr.h index 5add65196a98..13d5a61d0e77 100644 --- a/crypto/testmgr.h +++ b/crypto/testmgr.h @@ -70,6 +70,18 @@ struct aead_testvec { unsigned short rlen; }; +struct cprng_testvec { + char *key; + char *dt; + char *v; + char *result; + unsigned char klen; + unsigned short dtlen; + unsigned short vlen; + unsigned short rlen; + unsigned short loops; +}; + static char zeroed_string[48]; /* |