mirror of
https://github.com/guanzhi/GmSSL.git
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118 lines
3.3 KiB
C
118 lines
3.3 KiB
C
/*
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* Copyright 2014-2024 The GmSSL Project. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the License); you may
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* not use this file except in compliance with the License.
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*/
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#ifndef GMSSL_ZUC_H
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#define GMSSL_ZUC_H
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#include <stdlib.h>
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#include <stdint.h>
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#include <gmssl/api.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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# define ZUC_KEY_SIZE 16
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# define ZUC_IV_SIZE 16
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# define ZUC_MAC_SIZE 4
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typedef uint32_t ZUC_BIT;
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typedef uint32_t ZUC_UINT5;
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typedef uint8_t ZUC_UINT6;
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typedef uint32_t ZUC_UINT15;
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typedef uint32_t ZUC_UINT31;
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typedef uint32_t ZUC_UINT32;
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typedef struct {
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ZUC_UINT31 LFSR[16];
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ZUC_UINT32 R1;
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ZUC_UINT32 R2;
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} ZUC_STATE;
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void zuc_init(ZUC_STATE *state, const uint8_t key[ZUC_KEY_SIZE], const uint8_t iv[ZUC_IV_SIZE]);
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void zuc_generate_keystream(ZUC_STATE *state, size_t nwords, ZUC_UINT32 *words);
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ZUC_UINT32 zuc_generate_keyword(ZUC_STATE *state);
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void zuc_encrypt(ZUC_STATE *state, const uint8_t *in, size_t inlen, uint8_t *out);
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typedef struct ZUC_MAC_CTX_st {
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ZUC_UINT31 LFSR[16];
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ZUC_UINT32 R1;
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ZUC_UINT32 R2;
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ZUC_UINT32 T;
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ZUC_UINT32 K0;
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uint8_t buf[4];
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size_t buflen;
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} ZUC_MAC_CTX;
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void zuc_mac_init(ZUC_MAC_CTX *ctx, const uint8_t key[ZUC_KEY_SIZE], const uint8_t iv[ZUC_IV_SIZE]);
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void zuc_mac_update(ZUC_MAC_CTX *ctx, const uint8_t *data, size_t len);
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void zuc_mac_finish(ZUC_MAC_CTX *ctx, const uint8_t *data, size_t nbits, uint8_t mac[ZUC_MAC_SIZE]);
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#define ZUC_EEA_ENCRYPT_NWORDS(nbits) ((nbits + 31)/32)
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#define ZUC_EEA_ENCRYPT_NBYTES(nbits) (ZUC_EEA_ENCRYPT_NWORDS(nbits)*4)
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void zuc_eea_encrypt(const ZUC_UINT32 *in, ZUC_UINT32 *out, size_t nbits,
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const uint8_t key[ZUC_KEY_SIZE], ZUC_UINT32 count, ZUC_UINT5 bearer,
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ZUC_BIT direction);
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ZUC_UINT32 zuc_eia_generate_mac(const ZUC_UINT32 *data, size_t nbits,
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const uint8_t key[ZUC_KEY_SIZE], ZUC_UINT32 count, ZUC_UINT5 bearer,
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ZUC_BIT direction);
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# define ZUC256_KEY_SIZE 32
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# define ZUC256_IV_SIZE 23
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# define ZUC256_MAC32_SIZE 4
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# define ZUC256_MAC64_SIZE 8
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# define ZUC256_MAC128_SIZE 16
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# define ZUC256_MIN_MAC_SIZE ZUC256_MAC32_SIZE
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# define ZUC256_MAX_MAC_SIZE ZUC256_MAC128_SIZE
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typedef ZUC_STATE ZUC256_STATE;
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void zuc256_init(ZUC256_STATE *state, const uint8_t key[ZUC256_KEY_SIZE], const uint8_t iv[ZUC256_IV_SIZE]);
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void zuc256_generate_keystream(ZUC_STATE *state, size_t nwords, ZUC_UINT32 *words);
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ZUC_UINT32 zuc256_generate_keyword(ZUC_STATE *state);
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typedef struct ZUC256_MAC_CTX_st {
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ZUC_UINT31 LFSR[16];
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ZUC_UINT32 R1;
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ZUC_UINT32 R2;
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ZUC_UINT32 T[4];
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ZUC_UINT32 K0[4];
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uint8_t buf[4];
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size_t buflen;
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int macbits;
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} ZUC256_MAC_CTX;
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void zuc256_mac_init(ZUC256_MAC_CTX *ctx, const uint8_t key[ZUC256_KEY_SIZE],
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const uint8_t iv[ZUC256_IV_SIZE], int macbits);
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void zuc256_mac_update(ZUC256_MAC_CTX *ctx, const uint8_t *data, size_t len);
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void zuc256_mac_finish(ZUC256_MAC_CTX *ctx, const uint8_t *data, size_t nbits, uint8_t mac[ZUC_MAC_SIZE]);
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typedef struct {
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ZUC_STATE zuc_state;
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uint8_t block[4];
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size_t block_nbytes;
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} ZUC_CTX;
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_gmssl_export int zuc_encrypt_init(ZUC_CTX *ctx, const uint8_t key[ZUC_KEY_SIZE], const uint8_t iv[ZUC_IV_SIZE]);
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_gmssl_export int zuc_encrypt_update(ZUC_CTX *ctx, const uint8_t *in, size_t inlen, uint8_t *out, size_t *outlen);
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_gmssl_export int zuc_encrypt_finish(ZUC_CTX *ctx, uint8_t *out, size_t *outlen);
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#ifdef __cplusplus
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}
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#endif
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#endif
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