34 lines
1.2 KiB
C
34 lines
1.2 KiB
C
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/*
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* Copyright 2022 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#ifndef OSSL_PROV_HMAC_DRBG_H
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# define OSSL_PROV_HMAC_DRBG_H
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# pragma once
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#include <openssl/evp.h>
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#include "prov/provider_util.h"
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typedef struct drbg_hmac_st {
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EVP_MAC_CTX *ctx; /* H(x) = HMAC_hash OR H(x) = KMAC */
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PROV_DIGEST digest; /* H(x) = hash(x) */
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size_t blocklen;
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unsigned char K[EVP_MAX_MD_SIZE];
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unsigned char V[EVP_MAX_MD_SIZE];
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} PROV_DRBG_HMAC;
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int ossl_drbg_hmac_init(PROV_DRBG_HMAC *drbg,
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const unsigned char *ent, size_t ent_len,
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const unsigned char *nonce, size_t nonce_len,
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const unsigned char *pstr, size_t pstr_len);
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int ossl_drbg_hmac_generate(PROV_DRBG_HMAC *hmac,
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unsigned char *out, size_t outlen,
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const unsigned char *adin, size_t adin_len);
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#endif /* OSSL_PROV_HMAC_DRBG_H */
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