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| author | Stephan Müller <smueller@chronox.de> | 2021-11-19 07:55:58 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2021-11-26 16:25:17 +1100 |
| commit | 026a733e66592e743a0905c7fd6b5d3bf89b2d7e (patch) | |
| tree | 017fa67b601ebc24efc2c9bd8ccf4b6d074d2747 /crypto/Makefile | |
| parent | b808f32023dd8127b0fa27f60fa69a959fd70388 (diff) | |
| download | linux-026a733e66592e743a0905c7fd6b5d3bf89b2d7e.tar.bz2 | |
crypto: kdf - add SP800-108 counter key derivation function
SP800-108 defines three KDFs - this patch provides the counter KDF
implementation.
The KDF is implemented as a service function where the caller has to
maintain the hash / HMAC state. Apart from this hash/HMAC state, no
additional state is required to be maintained by either the caller or
the KDF implementation.
The key for the KDF is set with the crypto_kdf108_setkey function which
is intended to be invoked before the caller requests a key derivation
operation via crypto_kdf108_ctr_generate.
SP800-108 allows the use of either a HMAC or a hash as crypto primitive
for the KDF. When a HMAC primtive is intended to be used,
crypto_kdf108_setkey must be used to set the HMAC key. Otherwise, for a
hash crypto primitve crypto_kdf108_ctr_generate can be used immediately
after allocating the hash handle.
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/Makefile')
| -rw-r--r-- | crypto/Makefile | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/crypto/Makefile b/crypto/Makefile index 429c4d57458c..d76bff8d0ffd 100644 --- a/crypto/Makefile +++ b/crypto/Makefile @@ -200,3 +200,8 @@ obj-$(CONFIG_ASYMMETRIC_KEY_TYPE) += asymmetric_keys/ obj-$(CONFIG_CRYPTO_HASH_INFO) += hash_info.o crypto_simd-y := simd.o obj-$(CONFIG_CRYPTO_SIMD) += crypto_simd.o + +# +# Key derivation function +# +obj-$(CONFIG_CRYPTO_KDF800108_CTR) += kdf_sp800108.o |