104 lines
2.8 KiB
C
104 lines
2.8 KiB
C
#ifndef _SOFT_ENCRYPT_H_
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#define _SOFT_ENCRYPT_H_
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#define AES_ENCRYPT 1
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#define AES_DECRYPT 0
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#define WEENY_AES_ROM_TABLES 0
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#define XOR_KEY_COUNT 8
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#define BK_AES_IV_LEN (16)
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#define BK_AES_KEY_LEN (32)
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#define BK_TINY_AES_IV "0123456789ABCEEF"
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#define BK_TINY_AES_KEY "0123456789ABCEEF0123456789ABCDEF"
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#define POW_LEN (256)
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#define LOG_LEN (256)
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/**
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* \brief AES context structure
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*/
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typedef struct {
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int nr; /*!< number of rounds */
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unsigned long *rk; /*!< AES round keys */
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unsigned long buf[68]; /*!< unaligned data */
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} weeny_aes_context;
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#ifdef __cplusplus
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extern "C" {
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#endif
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void xor_enc(void *in, void *out, int len);
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void xor_dec(void *in, void *out, int len);
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/**
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* \brief AES key schedule (encryption)
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*
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* \param ctx AES context to be initialized
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* \param key encryption key
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* \param keysize must be 128, 192 or 256
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*/
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void weeny_aes_setkey_enc(weeny_aes_context *ctx, unsigned char *key, int keysize);
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/**
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* \brief AES key schedule (decryption)
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*
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* \param ctx AES context to be initialized
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* \param key decryption key
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* \param keysize must be 128, 192 or 256
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*/
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void weeny_aes_setkey_dec(weeny_aes_context *ctx, unsigned char *key, int keysize);
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/**
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* \brief AES-ECB block encryption/decryption
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*
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* \param ctx AES context
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* \param mode AES_ENCRYPT or AES_DECRYPT
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* \param input 16-byte input block
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* \param output 16-byte output block
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*/
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void weeny_aes_crypt_ecb(weeny_aes_context *ctx,
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int mode,
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unsigned char input[16], unsigned char output[16]);
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/**
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* \brief AES-CBC buffer encryption/decryption
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*
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* \param ctx AES context
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* \param mode AES_ENCRYPT or AES_DECRYPT
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* \param length length of the input data
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* \param iv initialization vector (updated after use)
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* \param input buffer holding the input data
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* \param output buffer holding the output data
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*/
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void weeny_aes_crypt_cbc(weeny_aes_context *ctx,
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int mode,
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int length,
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unsigned char iv[16],
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unsigned char *input, unsigned char *output);
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/**
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* \brief AES-CFB128 buffer encryption/decryption
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*
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* \param ctx AES context
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* \param mode AES_ENCRYPT or AES_DECRYPT
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* \param length length of the input data
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* \param iv_off offset in IV (updated after use)
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* \param iv initialization vector (updated after use)
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* \param input buffer holding the input data
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* \param output buffer holding the output data
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*/
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void weeny_aes_crypt_cfb128(weeny_aes_context *ctx,
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int mode,
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int length,
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int *iv_off,
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unsigned char iv[16],
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unsigned char *input, unsigned char *output);
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#ifdef __cplusplus
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}
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#endif
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#endif //_SOFT_ENCRYPT_H_
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// eof
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