Man page - kcapi_kdf_fb(3)
Packages contains this manual
- kcapi_aead_setassoclen(3)
- kcapi_cipher_decrypt_aio(3)
- kcapi_md_digest(3)
- kcapi_kpp_destroy(3)
- kcapi_kpp_keygen(3)
- kcapi_versionstring(3)
- kcapi_aead_outbuflen_dec(3)
- kcapi_kpp_dh_setparam_pkcs3(3)
- kcapi_kpp_setkey(3)
- kcapi_aead_init(3)
- kcapi_akcipher_stream_update(3)
- kcapi_md_hmac_sha224(3)
- kcapi_cipher_enc_aes_ctr(3)
- kcapi_md_hmac_sha512(3)
- kcapi_rng_seed(3)
- kcapi_md_init(3)
- kcapi_md_sha1(3)
- kcapi_aead_blocksize(3)
- kcapi_aead_stream_op(3)
- kcapi_rng_get_bytes(3)
- kcapi_aead_destroy(3)
- kcapi_akcipher_setpubkey(3)
- kcapi_md_final(3)
- kcapi_akcipher_sign_aio(3)
- kcapi_aead_encrypt(3)
- kcapi_akcipher_stream_init_vfy(3)
- kcapi_aead_encrypt_aio(3)
- kcapi_aead_decrypt_aio(3)
- kcapi_pbkdf(3)
- kcapi_aead_settaglen(3)
- kcapi_aead_stream_init_enc(3)
- kcapi_cipher_enc_aes_cbc(3)
- kcapi_kdf_ctr(3)
- kcapi_pad_iv(3)
- kcapi_aead_getdata_input(3)
- kcapi_kpp_ecdh_setcurve(3)
- kcapi_aead_decrypt(3)
- kcapi_cipher_stream_update(3)
- kcapi_hkdf(3)
- kcapi_md_setkey(3)
- kcapi_cipher_enc_sm4_ctr(3)
- kcapi_cipher_dec_sm4_cbc(3)
- kcapi_memset_secure(3)
- kcapi_akcipher_stream_op(3)
- kcapi_kdf_fb(3)
- kcapi_md_sha512(3)
- kcapi_handle_reinit(3)
- kcapi_md_hmac_sha1(3)
- kcapi_kpp_ssgen(3)
- kcapi_md_sha224(3)
- kcapi_kpp_ssgen_aio(3)
- kcapi_cipher_blocksize(3)
- kcapi_cipher_stream_init_enc(3)
- kcapi_akcipher_stream_init_sgn(3)
- kcapi_rng_init(3)
- kcapi_akcipher_decrypt(3)
- kcapi_cipher_enc_sm4_cbc(3)
- kcapi_rng_destroy(3)
- kcapi_akcipher_setkey(3)
- kcapi_cipher_dec_aes_ctr(3)
- kcapi_cipher_destroy(3)
- kcapi_cipher_setkey(3)
- kcapi_pbkdf_iteration_count(3)
- kcapi_aead_stream_update_last(3)
- kcapi_cipher_encrypt_aio(3)
- kcapi_md_sm3(3)
- kcapi_set_maxsplicesize(3)
- kcapi_akcipher_stream_init_dec(3)
- kcapi_aead_outbuflen_enc(3)
- kcapi_akcipher_destroy(3)
- kcapi_cipher_dec_sm4_ctr(3)
- kcapi_aead_authsize(3)
- kcapi_cipher_encrypt(3)
- kcapi_kdf_dpi(3)
- kcapi_aead_setkey(3)
- kcapi_akcipher_verify_aio(3)
- kcapi_cipher_stream_update_last(3)
- kcapi_akcipher_encrypt(3)
- kcapi_cipher_decrypt(3)
- kcapi_cipher_stream_op(3)
- kcapi_md_digestsize(3)
- kcapi_cipher_stream_init_dec(3)
- kcapi_aead_ccm_nonce_to_iv(3)
- kcapi_kpp_keygen_aio(3)
- kcapi_akcipher_decrypt_aio(3)
- kcapi_akcipher_verify(3)
- kcapi_aead_stream_update(3)
- kcapi_set_verbosity(3)
- kcapi_md_sha384(3)
- kcapi_md_sha256(3)
- kcapi_rng_seedsize(3)
- kcapi_md_update(3)
- kcapi_get_maxsplicesize(3)
- kcapi_akcipher_sign(3)
- kcapi_akcipher_encrypt_aio(3)
- kcapi_akcipher_stream_init_enc(3)
- kcapi_md_hmac_sha256(3)
- kcapi_aead_inbuflen_dec(3)
- kcapi_md_destroy(3)
- kcapi_aead_inbuflen_enc(3)
- kcapi_cipher_init(3)
- kcapi_kpp_init(3)
- kcapi_cipher_ivsize(3)
- kcapi_md_hmac_sha384(3)
- kcapi_md_hmac_sm3(3)
- kcapi_akcipher_init(3)
- kcapi_aead_getdata_output(3)
- kcapi_aead_ivsize(3)
- kcapi_cipher_dec_aes_cbc(3)
- kcapi_aead_stream_init_dec(3)
- kcapi_version(3)
- kcapi_rng_generate(3)
apt-get install libkcapi-dev
Manual
KCAPI_KDF_FB
NAMESYNOPSIS
ARGUMENTS
DESCRIPTION
AUTHOR
COPYRIGHT
NAME
kcapi_kdf_fb - Feedback Mode Key Derivation Function
SYNOPSIS
|
ssize_t kcapi_kdf_fb(struct kcapi_handle * handle , const uint8_t * src , size_t slen , uint8_t * dst , size_t dlen ); |
ARGUMENTS
handle
[in] cipher handle allocated by caller. This cipher handle must be allocated with kcapi_md_init . If the caller is interested in a KDF using a keyed message digest, the caller should also call kcapi_md_setkey before invoking this function.
src
[in] Input data that should be transformed into a key (see below).
slen
[in] Length of the src input data.
dst
[out] Buffer to store the generated key in,
dlen
[in] Length of the dst buffer. This value defines the number of bytes generated by the KDF.
DESCRIPTION
This function is an implementation of the KDF in feedback mode with a non-NULL IV and with counter according to SP800-108 section 5.2. The IV is supplied with src and must be equal to the digestsize of the used cipher.
In addition, the caller must provide Label || 0x00 || Context in src. This src pointer must not be NULL as the IV is required. The ultimate format of the src pointer is IV || Label || 0x00 || Context where the length of the IV is equal to the block size (i.e. the digest size of the underlying hash) of the PRF.
return 0 upon success; a negative errno-style error code if an error occurred
AUTHOR
Stephan Mueller <smueller@chronox.de>
Author.