298 lines
11 KiB
C
298 lines
11 KiB
C
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#ifdef HMAC
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typedef struct Hmac_state {
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hash_state md;
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int hash;
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hash_state hashstate;
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unsigned char *key;
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} hmac_state;
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int hmac_init(hmac_state *hmac, int hash, const unsigned char *key, unsigned long keylen);
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int hmac_process(hmac_state *hmac, const unsigned char *in, unsigned long inlen);
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int hmac_done(hmac_state *hmac, unsigned char *out, unsigned long *outlen);
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int hmac_test(void);
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int hmac_memory(int hash,
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const unsigned char *key, unsigned long keylen,
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const unsigned char *in, unsigned long inlen,
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unsigned char *out, unsigned long *outlen);
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int hmac_memory_multi(int hash,
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const unsigned char *key, unsigned long keylen,
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unsigned char *out, unsigned long *outlen,
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const unsigned char *in, unsigned long inlen, ...);
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int hmac_file(int hash, const char *fname, const unsigned char *key,
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unsigned long keylen,
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unsigned char *dst, unsigned long *dstlen);
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#endif
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#ifdef OMAC
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typedef struct {
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int cipher_idx,
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buflen,
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blklen;
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unsigned char block[MAXBLOCKSIZE],
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prev[MAXBLOCKSIZE],
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Lu[2][MAXBLOCKSIZE];
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symmetric_key key;
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} omac_state;
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int omac_init(omac_state *omac, int cipher, const unsigned char *key, unsigned long keylen);
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int omac_process(omac_state *omac, const unsigned char *in, unsigned long inlen);
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int omac_done(omac_state *omac, unsigned char *out, unsigned long *outlen);
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int omac_memory(int cipher,
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const unsigned char *key, unsigned long keylen,
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const unsigned char *in, unsigned long inlen,
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unsigned char *out, unsigned long *outlen);
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int omac_memory_multi(int cipher,
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const unsigned char *key, unsigned long keylen,
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unsigned char *out, unsigned long *outlen,
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const unsigned char *in, unsigned long inlen, ...);
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int omac_file(int cipher,
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const unsigned char *key, unsigned long keylen,
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const char *filename,
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unsigned char *out, unsigned long *outlen);
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int omac_test(void);
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#endif /* OMAC */
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#ifdef PMAC
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typedef struct {
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unsigned char Ls[32][MAXBLOCKSIZE], /* L shifted by i bits to the left */
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Li[MAXBLOCKSIZE], /* value of Li [current value, we calc from previous recall] */
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Lr[MAXBLOCKSIZE], /* L * x^-1 */
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block[MAXBLOCKSIZE], /* currently accumulated block */
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checksum[MAXBLOCKSIZE]; /* current checksum */
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symmetric_key key; /* scheduled key for cipher */
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unsigned long block_index; /* index # for current block */
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int cipher_idx, /* cipher idx */
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block_len, /* length of block */
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buflen; /* number of bytes in the buffer */
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} pmac_state;
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int pmac_init(pmac_state *pmac, int cipher, const unsigned char *key, unsigned long keylen);
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int pmac_process(pmac_state *pmac, const unsigned char *in, unsigned long inlen);
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int pmac_done(pmac_state *pmac, unsigned char *out, unsigned long *outlen);
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int pmac_memory(int cipher,
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const unsigned char *key, unsigned long keylen,
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const unsigned char *msg, unsigned long msglen,
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unsigned char *out, unsigned long *outlen);
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int pmac_memory_multi(int cipher,
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const unsigned char *key, unsigned long keylen,
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unsigned char *out, unsigned long *outlen,
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const unsigned char *in, unsigned long inlen, ...);
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int pmac_file(int cipher,
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const unsigned char *key, unsigned long keylen,
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const char *filename,
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unsigned char *out, unsigned long *outlen);
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int pmac_test(void);
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/* internal functions */
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int pmac_ntz(unsigned long x);
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void pmac_shift_xor(pmac_state *pmac);
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#endif /* PMAC */
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#ifdef EAX_MODE
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#if !(defined(OMAC) && defined(CTR))
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#error EAX_MODE requires OMAC and CTR
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#endif
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typedef struct {
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unsigned char N[MAXBLOCKSIZE];
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symmetric_CTR ctr;
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omac_state headeromac, ctomac;
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} eax_state;
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int eax_init(eax_state *eax, int cipher, const unsigned char *key, unsigned long keylen,
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const unsigned char *nonce, unsigned long noncelen,
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const unsigned char *header, unsigned long headerlen);
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int eax_encrypt(eax_state *eax, const unsigned char *pt, unsigned char *ct, unsigned long length);
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int eax_decrypt(eax_state *eax, const unsigned char *ct, unsigned char *pt, unsigned long length);
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int eax_addheader(eax_state *eax, const unsigned char *header, unsigned long length);
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int eax_done(eax_state *eax, unsigned char *tag, unsigned long *taglen);
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int eax_encrypt_authenticate_memory(int cipher,
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const unsigned char *key, unsigned long keylen,
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const unsigned char *nonce, unsigned long noncelen,
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const unsigned char *header, unsigned long headerlen,
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const unsigned char *pt, unsigned long ptlen,
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unsigned char *ct,
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unsigned char *tag, unsigned long *taglen);
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int eax_decrypt_verify_memory(int cipher,
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const unsigned char *key, unsigned long keylen,
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const unsigned char *nonce, unsigned long noncelen,
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const unsigned char *header, unsigned long headerlen,
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const unsigned char *ct, unsigned long ctlen,
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unsigned char *pt,
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unsigned char *tag, unsigned long taglen,
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int *stat);
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int eax_test(void);
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#endif /* EAX MODE */
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#ifdef OCB_MODE
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typedef struct {
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unsigned char L[MAXBLOCKSIZE], /* L value */
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Ls[32][MAXBLOCKSIZE], /* L shifted by i bits to the left */
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Li[MAXBLOCKSIZE], /* value of Li [current value, we calc from previous recall] */
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Lr[MAXBLOCKSIZE], /* L * x^-1 */
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R[MAXBLOCKSIZE], /* R value */
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checksum[MAXBLOCKSIZE]; /* current checksum */
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symmetric_key key; /* scheduled key for cipher */
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unsigned long block_index; /* index # for current block */
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int cipher, /* cipher idx */
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block_len; /* length of block */
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} ocb_state;
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int ocb_init(ocb_state *ocb, int cipher,
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const unsigned char *key, unsigned long keylen, const unsigned char *nonce);
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int ocb_encrypt(ocb_state *ocb, const unsigned char *pt, unsigned char *ct);
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int ocb_decrypt(ocb_state *ocb, const unsigned char *ct, unsigned char *pt);
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int ocb_done_encrypt(ocb_state *ocb,
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const unsigned char *pt, unsigned long ptlen,
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unsigned char *ct,
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unsigned char *tag, unsigned long *taglen);
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int ocb_done_decrypt(ocb_state *ocb,
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const unsigned char *ct, unsigned long ctlen,
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unsigned char *pt,
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const unsigned char *tag, unsigned long taglen, int *stat);
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int ocb_encrypt_authenticate_memory(int cipher,
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const unsigned char *key, unsigned long keylen,
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const unsigned char *nonce,
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const unsigned char *pt, unsigned long ptlen,
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unsigned char *ct,
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unsigned char *tag, unsigned long *taglen);
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int ocb_decrypt_verify_memory(int cipher,
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const unsigned char *key, unsigned long keylen,
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const unsigned char *nonce,
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const unsigned char *ct, unsigned long ctlen,
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unsigned char *pt,
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const unsigned char *tag, unsigned long taglen,
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int *stat);
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int ocb_test(void);
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/* internal functions */
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void ocb_shift_xor(ocb_state *ocb, unsigned char *Z);
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int ocb_ntz(unsigned long x);
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int s_ocb_done(ocb_state *ocb, const unsigned char *pt, unsigned long ptlen,
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unsigned char *ct, unsigned char *tag, unsigned long *taglen, int mode);
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#endif /* OCB_MODE */
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#ifdef CCM_MODE
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#define CCM_ENCRYPT 0
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#define CCM_DECRYPT 1
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int ccm_memory(int cipher,
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const unsigned char *key, unsigned long keylen,
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const unsigned char *nonce, unsigned long noncelen,
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const unsigned char *header, unsigned long headerlen,
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unsigned char *pt, unsigned long ptlen,
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unsigned char *ct,
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unsigned char *tag, unsigned long *taglen,
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int direction);
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int ccm_test(void);
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#endif /* CCM_MODE */
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#ifdef GCM_MODE
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#define GCM_ENCRYPT 0
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#define GCM_DECRYPT 1
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#define GCM_MODE_IV 0
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#define GCM_MODE_AAD 1
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#define GCM_MODE_TEXT 2
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typedef struct {
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symmetric_key K;
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unsigned char H[16], /* multiplier */
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X[16], /* accumulator */
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Y[16], /* counter */
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Y_0[16], /* initial counter */
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buf[16]; /* buffer for stuff */
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int cipher, /* which cipher */
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ivmode, /* Which mode is the IV in? */
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mode, /* mode the GCM code is in */
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buflen; /* length of data in buf */
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ulong64 totlen, /* 64-bit counter used for IV and AAD */
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pttotlen; /* 64-bit counter for the PT */
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#ifdef GCM_TABLES
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unsigned char PC[16][256][16]; /* 16 tables of 8x128 */
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#endif
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} gcm_state;
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void gcm_gf_mult(const unsigned char *a, const unsigned char *b, unsigned char *c);
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void gcm_mult_h(gcm_state *gcm, unsigned char *I);
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int gcm_init(gcm_state *gcm, int cipher,
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const unsigned char *key, int keylen);
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int gcm_reset(gcm_state *gcm);
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int gcm_add_iv(gcm_state *gcm,
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const unsigned char *IV, unsigned long IVlen);
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int gcm_add_aad(gcm_state *gcm,
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const unsigned char *adata, unsigned long adatalen);
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int gcm_process(gcm_state *gcm,
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unsigned char *pt, unsigned long ptlen,
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unsigned char *ct,
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int direction);
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int gcm_done(gcm_state *gcm,
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unsigned char *tag, unsigned long *taglen);
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int gcm_memory( int cipher,
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const unsigned char *key, unsigned long keylen,
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const unsigned char *IV, unsigned long IVlen,
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const unsigned char *adata, unsigned long adatalen,
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unsigned char *pt, unsigned long ptlen,
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unsigned char *ct,
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unsigned char *tag, unsigned long *taglen,
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int direction);
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int gcm_test(void);
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#endif /* GCM_MODE */
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#ifdef PELICAN
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typedef struct pelican_state
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{
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symmetric_key K;
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unsigned char state[16];
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int buflen;
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} pelican_state;
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int pelican_init(pelican_state *pelmac, const unsigned char *key, unsigned long keylen);
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int pelican_process(pelican_state *pelmac, const unsigned char *in, unsigned long inlen);
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int pelican_done(pelican_state *pelmac, unsigned char *out);
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int pelican_test(void);
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int pelican_memory(const unsigned char *key, unsigned long keylen,
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const unsigned char *in, unsigned long inlen,
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unsigned char *out);
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#endif
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