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- /* Copyright (c) 2018, The Tor Project, Inc. */
- /* See LICENSE for licensing information */
- #ifndef CRYPTO_OPE_H
- #define CRYPTO_OPE_H
- #include "orconfig.h"
- #include "crypto.h"
- #include "crypto_util.h"
- #include "crypto_ope.h"
- /** Length of OPE key, in bytes. */
- #define OPE_KEY_LEN 32
- /** Largest value that can be passed to crypto_ope_encrypt() */
- #define OPE_INPUT_MAX 131072
- typedef struct crypto_ope_c crypto_ope_t;
- crypto_ope_t *crypto_ope_new(const uint8_t *key);
- void crypto_ope_free_(crypto_ope_t *ope);
- #define crypto_ope_free(ope) \
- FREE_AND_NULL(crypto_ope_t, crypto_ope_free_, (ope))
- uint64_t crypto_ope_encrypt(const crypto_ope_t *ope, int plaintext);
- #ifdef CRYPTO_OPE_PRIVATE
- STATIC crypto_cipher_t *ope_get_cipher(const crypto_ope_t *ope,
- uint32_t initial_idx);
- STATIC uint64_t sum_values_from_cipher(crypto_cipher_t *c, size_t n);
- #endif
- #endif
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