72 lines
1.5 KiB
C
72 lines
1.5 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2021, Stephan Mueller <smueller@chronox.de>
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*/
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#ifndef _CRYPTO_KDF_SELFTEST_H
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#define _CRYPTO_KDF_SELFTEST_H
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#include <crypto/hash.h>
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#include <linux/uio.h>
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struct kdf_testvec {
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unsigned char *key;
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size_t keylen;
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unsigned char *ikm;
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size_t ikmlen;
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struct kvec info;
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unsigned char *expected;
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size_t expectedlen;
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};
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static inline int
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kdf_test(const struct kdf_testvec *test, const char *name,
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int (*crypto_kdf_setkey)(struct crypto_shash *kmd,
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const u8 *key, size_t keylen,
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const u8 *ikm, size_t ikmlen),
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int (*crypto_kdf_generate)(struct crypto_shash *kmd,
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const struct kvec *info,
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unsigned int info_nvec,
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u8 *dst, unsigned int dlen))
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{
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struct crypto_shash *kmd;
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int ret;
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u8 *buf = kzalloc(test->expectedlen, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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kmd = crypto_alloc_shash(name, 0, 0);
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if (IS_ERR(kmd)) {
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pr_err("alg: kdf: could not allocate hash handle for %s\n",
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name);
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kfree(buf);
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return -ENOMEM;
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}
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ret = crypto_kdf_setkey(kmd, test->key, test->keylen,
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test->ikm, test->ikmlen);
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if (ret) {
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pr_err("alg: kdf: could not set key derivation key\n");
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goto err;
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}
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ret = crypto_kdf_generate(kmd, &test->info, 1, buf, test->expectedlen);
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if (ret) {
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pr_err("alg: kdf: could not obtain key data\n");
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goto err;
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}
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ret = memcmp(test->expected, buf, test->expectedlen);
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if (ret)
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ret = -EINVAL;
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err:
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crypto_free_shash(kmd);
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kfree(buf);
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return ret;
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}
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#endif /* _CRYPTO_KDF_SELFTEST_H */
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