des.h

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#ifndef IMB_DES_H
#define IMB_DES_H

#include <stdint.h>

/**
 * @brief DES CBC encryption
 *
 * @param input source buffer with plain text
 * @param output destination buffer for cipher text
 * @param size number of bytes to encrypt (multiple of 8)
 * @param ks pointer to key schedule structure
 * @param ivec pointer to initialization vector
 */
void des_enc_cbc_basic(const void *input, void *output, const int size,
                       const uint64_t *ks, const uint64_t *ivec);

/**
 * @brief DES CBC decryption
 *
 * @param input source buffer with cipher text
 * @param output destination buffer for plain text
 * @param size number of bytes to decrypt (multiple of 8)
 * @param ks pointer to key schedule structure
 * @param ivec pointer to initialization vector
 */
void des_dec_cbc_basic(const void *input, void *output, const int size,
                       const uint64_t *ks, const uint64_t *ivec);

/**
 * @brief 3DES CBC encryption
 *
 * @param input source buffer with plain text
 * @param output destination buffer for cipher text
 * @param size number of bytes to encrypt (multiple of 8)
 * @param ks1 pointer to key schedule 1 structure
 * @param ks2 pointer to key schedule 2 structure
 * @param ks3 pointer to key schedule 3 structure
 * @param ivec pointer to initialization vector
 */
void des3_enc_cbc_basic(const void *input, void *output, const int size,
                        const uint64_t *ks1, const uint64_t *ks2,
                        const uint64_t *ks3, const uint64_t *ivec);

/**
 * @brief 3DES CBC decryption
 *
 * @param input source buffer with cipher text
 * @param output destination buffer for plain text
 * @param size number of bytes to decrypt (multiple of 8)
 * @param ks1 pointer to key schedule 1 structure
 * @param ks2 pointer to key schedule 2 structure
 * @param ks3 pointer to key schedule 3 structure
 * @param ivec pointer to initialization vector
 */
void des3_dec_cbc_basic(const void *input, void *output, const int size,
                        const uint64_t *ks1, const uint64_t *ks2,
                        const uint64_t *ks3, const uint64_t *ivec);

/**
 * @brief DOCSIS DES encryption
 *
 * @param input source buffer with plain text
 * @param output destination buffer for cipher text
 * @param size number of bytes to encrypt
 * @param ks pointer to key schedule structure
 * @param ivec pointer to initialization vector
 */
void docsis_des_enc_basic(const void *input, void *output, const int size,
                          const uint64_t *ks, const uint64_t *ivec);

/**
 * @brief DOCSIS DES decryption
 *
 * @param input source buffer with cipher text
 * @param output destination buffer for plain text
 * @param size number of bytes to decrypt
 * @param ks pointer to key schedule structure
 * @param ivec pointer to initialization vector
 */
void docsis_des_dec_basic(const void *input, void *output, const int size,
                          const uint64_t *ks, const uint64_t *ivec);

#endif /* IMB_DES_H */