519 lines
18 KiB
C
519 lines
18 KiB
C
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/* ---- HASH FUNCTIONS ---- */
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#ifdef SHA512
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struct sha512_state {
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ulong64 length, state[8];
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unsigned long curlen;
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unsigned char buf[128];
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};
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#endif
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#ifdef SHA256
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struct sha256_state {
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ulong64 length;
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ulong32 state[8], curlen;
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unsigned char buf[64];
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};
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#endif
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#ifdef SHA1
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struct sha1_state {
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ulong64 length;
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ulong32 state[5], curlen;
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unsigned char buf[64];
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};
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#endif
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#ifdef MD5
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struct md5_state {
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ulong64 length;
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ulong32 state[4], curlen;
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unsigned char buf[64];
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};
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#endif
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#ifdef MD4
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struct md4_state {
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ulong64 length;
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ulong32 state[4], curlen;
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unsigned char buf[64];
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};
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#endif
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#ifdef TIGER
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struct tiger_state {
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ulong64 state[3], length;
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unsigned long curlen;
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unsigned char buf[64];
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};
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#endif
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#ifdef MD2
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struct md2_state {
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unsigned char chksum[16], X[48], buf[16];
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unsigned long curlen;
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};
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#endif
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#ifdef RIPEMD128
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struct rmd128_state {
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ulong64 length;
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unsigned char buf[64];
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ulong32 curlen, state[4];
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};
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#endif
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#ifdef RIPEMD160
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struct rmd160_state {
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ulong64 length;
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unsigned char buf[64];
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ulong32 curlen, state[5];
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};
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#endif
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#ifdef WHIRLPOOL
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struct whirlpool_state {
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ulong64 length, state[8];
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unsigned char buf[64];
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ulong32 curlen;
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};
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#endif
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#ifdef CHC_HASH
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struct chc_state {
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ulong64 length;
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unsigned char state[MAXBLOCKSIZE], buf[MAXBLOCKSIZE];
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ulong32 curlen;
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};
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#endif
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typedef union Hash_state {
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#ifdef CHC_HASH
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struct chc_state chc;
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#endif
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#ifdef WHIRLPOOL
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struct whirlpool_state whirlpool;
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#endif
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#ifdef SHA512
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struct sha512_state sha512;
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#endif
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#ifdef SHA256
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struct sha256_state sha256;
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#endif
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#ifdef SHA1
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struct sha1_state sha1;
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#endif
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#ifdef MD5
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struct md5_state md5;
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#endif
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#ifdef MD4
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struct md4_state md4;
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#endif
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#ifdef MD2
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struct md2_state md2;
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#endif
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#ifdef TIGER
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struct tiger_state tiger;
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#endif
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#ifdef RIPEMD128
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struct rmd128_state rmd128;
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#endif
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#ifdef RIPEMD160
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struct rmd160_state rmd160;
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#endif
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} hash_state;
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extern struct ltc_hash_descriptor {
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/** name of hash */
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char *name;
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/** internal ID */
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unsigned char ID;
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/** Size of digest in octets */
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unsigned long hashsize;
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/** Input block size in octets */
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unsigned long blocksize;
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/** ASN.1 DER identifier */
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unsigned char DER[64];
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/** Length of DER encoding */
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unsigned long DERlen;
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/** Init a hash state
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@param hash The hash to initialize
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@return CRYPT_OK if successful
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*/
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int (*init)(hash_state *hash);
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/** Process a block of data
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@param hash The hash state
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@param in The data to hash
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@param inlen The length of the data (octets)
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@return CRYPT_OK if successful
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*/
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int (*process)(hash_state *hash, const unsigned char *in, unsigned long inlen);
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/** Produce the digest and store it
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@param hash The hash state
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@param out [out] The destination of the digest
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@return CRYPT_OK if successful
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*/
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int (*done)(hash_state *hash, unsigned char *out);
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/** Self-test
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@return CRYPT_OK if successful, CRYPT_NOP if self-tests have been disabled
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*/
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int (*test)(void);
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} hash_descriptor[];
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#ifdef CHC_HASH
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int chc_register(int cipher);
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int chc_init(hash_state * md);
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int chc_process(hash_state * md, const unsigned char *in, unsigned long inlen);
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int chc_done(hash_state * md, unsigned char *hash);
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int chc_test(void);
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extern const struct ltc_hash_descriptor chc_desc;
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#endif
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#ifdef WHIRLPOOL
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int whirlpool_init(hash_state * md);
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int whirlpool_process(hash_state * md, const unsigned char *in, unsigned long inlen);
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int whirlpool_done(hash_state * md, unsigned char *hash);
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int whirlpool_test(void);
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extern const struct ltc_hash_descriptor whirlpool_desc;
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#endif
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#ifdef SHA512
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int sha512_init(hash_state * md);
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int sha512_process(hash_state * md, const unsigned char *in, unsigned long inlen);
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int sha512_done(hash_state * md, unsigned char *hash);
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int sha512_test(void);
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extern const struct ltc_hash_descriptor sha512_desc;
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#endif
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#ifdef SHA384
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#ifndef SHA512
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#error SHA512 is required for SHA384
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#endif
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int sha384_init(hash_state * md);
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#define sha384_process sha512_process
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int sha384_done(hash_state * md, unsigned char *hash);
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int sha384_test(void);
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extern const struct ltc_hash_descriptor sha384_desc;
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#endif
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#ifdef SHA256
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int sha256_init(hash_state * md);
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int sha256_process(hash_state * md, const unsigned char *in, unsigned long inlen);
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int sha256_done(hash_state * md, unsigned char *hash);
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int sha256_test(void);
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extern const struct ltc_hash_descriptor sha256_desc;
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#ifdef SHA224
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#ifndef SHA256
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#error SHA256 is required for SHA224
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#endif
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int sha224_init(hash_state * md);
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#define sha224_process sha256_process
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int sha224_done(hash_state * md, unsigned char *hash);
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int sha224_test(void);
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extern const struct ltc_hash_descriptor sha224_desc;
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#endif
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#endif
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#ifdef SHA1
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int sha1_init(hash_state * md);
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int sha1_process(hash_state * md, const unsigned char *in, unsigned long inlen);
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int sha1_done(hash_state * md, unsigned char *hash);
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int sha1_test(void);
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extern const struct ltc_hash_descriptor sha1_desc;
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#endif
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#ifdef MD5
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int md5_init(hash_state * md);
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int md5_process(hash_state * md, const unsigned char *in, unsigned long inlen);
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int md5_done(hash_state * md, unsigned char *hash);
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int md5_test(void);
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extern const struct ltc_hash_descriptor md5_desc;
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#endif
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#ifdef MD4
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int md4_init(hash_state * md);
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int md4_process(hash_state * md, const unsigned char *in, unsigned long inlen);
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int md4_done(hash_state * md, unsigned char *hash);
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int md4_test(void);
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extern const struct ltc_hash_descriptor md4_desc;
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#endif
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#ifdef MD2
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int md2_init(hash_state * md);
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int md2_process(hash_state * md, const unsigned char *in, unsigned long inlen);
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int md2_done(hash_state * md, unsigned char *hash);
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int md2_test(void);
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extern const struct ltc_hash_descriptor md2_desc;
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#endif
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#ifdef TIGER
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int tiger_init(hash_state * md);
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int tiger_process(hash_state * md, const unsigned char *in, unsigned long inlen);
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int tiger_done(hash_state * md, unsigned char *hash);
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int tiger_test(void);
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extern const struct ltc_hash_descriptor tiger_desc;
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#endif
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#ifdef RIPEMD128
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int rmd128_init(hash_state * md);
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int rmd128_process(hash_state * md, const unsigned char *in, unsigned long inlen);
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int rmd128_done(hash_state * md, unsigned char *hash);
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int rmd128_test(void);
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extern const struct ltc_hash_descriptor rmd128_desc;
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#endif
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#ifdef RIPEMD160
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int rmd160_init(hash_state * md);
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int rmd160_process(hash_state * md, const unsigned char *in, unsigned long inlen);
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int rmd160_done(hash_state * md, unsigned char *hash);
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int rmd160_test(void);
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extern const struct ltc_hash_descriptor rmd160_desc;
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#endif
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int find_hash(const char *name);
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int find_hash_id(unsigned char ID);
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int find_hash_any(const char *name, int digestlen);
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int register_hash(const struct ltc_hash_descriptor *hash);
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int unregister_hash(const struct ltc_hash_descriptor *hash);
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int hash_is_valid(int idx);
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int hash_memory(int hash,
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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 hash_memory_multi(int hash, unsigned char *out, unsigned long *outlen,
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const unsigned char *in, unsigned long inlen, ...);
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int hash_filehandle(int hash, FILE *in, unsigned char *out, unsigned long *outlen);
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int hash_file(int hash, const char *fname, unsigned char *out, unsigned long *outlen);
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/* a simple macro for making hash "process" functions */
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#define HASH_PROCESS(func_name, compress_name, state_var, block_size) \
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int func_name (hash_state * md, const unsigned char *in, unsigned long inlen) \
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{ \
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unsigned long n; \
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int err; \
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LTC_ARGCHK(md != NULL); \
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LTC_ARGCHK(in != NULL); \
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if (md-> state_var .curlen > sizeof(md-> state_var .buf)) { \
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return CRYPT_INVALID_ARG; \
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} \
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while (inlen > 0) { \
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if (md-> state_var .curlen == 0 && inlen >= block_size) { \
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if ((err = compress_name (md, (unsigned char *)in)) != CRYPT_OK) { \
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return err; \
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} \
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md-> state_var .length += block_size * 8; \
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in += block_size; \
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inlen -= block_size; \
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} else { \
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n = MIN(inlen, (block_size - md-> state_var .curlen)); \
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memcpy(md-> state_var .buf + md-> state_var.curlen, in, (size_t)n); \
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md-> state_var .curlen += n; \
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in += n; \
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inlen -= n; \
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if (md-> state_var .curlen == block_size) { \
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if ((err = compress_name (md, md-> state_var .buf)) != CRYPT_OK) {\
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return err; \
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} \
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md-> state_var .length += 8*block_size; \
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md-> state_var .curlen = 0; \
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} \
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} \
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} \
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return CRYPT_OK; \
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}
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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);
|
||
|
|
int omac_test(void);
|
||
|
|
#endif /* OMAC */
|
||
|
|
|
||
|
|
#ifdef PMAC
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
unsigned char Ls[32][MAXBLOCKSIZE], /* L shifted by i bits to the left */
|
||
|
|
Li[MAXBLOCKSIZE], /* value of Li [current value, we calc from previous recall] */
|
||
|
|
Lr[MAXBLOCKSIZE], /* L * x^-1 */
|
||
|
|
block[MAXBLOCKSIZE], /* currently accumulated block */
|
||
|
|
checksum[MAXBLOCKSIZE]; /* current checksum */
|
||
|
|
|
||
|
|
symmetric_key key; /* scheduled key for cipher */
|
||
|
|
unsigned long block_index; /* index # for current block */
|
||
|
|
int cipher_idx, /* cipher idx */
|
||
|
|
block_len, /* length of block */
|
||
|
|
buflen; /* number of bytes in the buffer */
|
||
|
|
} pmac_state;
|
||
|
|
|
||
|
|
int pmac_init(pmac_state *pmac, int cipher, const unsigned char *key, unsigned long keylen);
|
||
|
|
int pmac_process(pmac_state *pmac, const unsigned char *in, unsigned long inlen);
|
||
|
|
int pmac_done(pmac_state *pmac, unsigned char *out, unsigned long *outlen);
|
||
|
|
|
||
|
|
int pmac_memory(int cipher,
|
||
|
|
const unsigned char *key, unsigned long keylen,
|
||
|
|
const unsigned char *msg, unsigned long msglen,
|
||
|
|
unsigned char *out, unsigned long *outlen);
|
||
|
|
|
||
|
|
int pmac_memory_multi(int cipher,
|
||
|
|
const unsigned char *key, unsigned long keylen,
|
||
|
|
unsigned char *out, unsigned long *outlen,
|
||
|
|
const unsigned char *in, unsigned long inlen, ...);
|
||
|
|
|
||
|
|
int pmac_file(int cipher,
|
||
|
|
const unsigned char *key, unsigned long keylen,
|
||
|
|
const char *filename,
|
||
|
|
unsigned char *out, unsigned long *outlen);
|
||
|
|
|
||
|
|
int pmac_test(void);
|
||
|
|
|
||
|
|
/* internal functions */
|
||
|
|
int pmac_ntz(unsigned long x);
|
||
|
|
void pmac_shift_xor(pmac_state *pmac);
|
||
|
|
|
||
|
|
#endif /* PMAC */
|
||
|
|
|
||
|
|
#ifdef EAX_MODE
|
||
|
|
|
||
|
|
#if !(defined(OMAC) && defined(CTR))
|
||
|
|
#error EAX_MODE requires OMAC and CTR
|
||
|
|
#endif
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
unsigned char N[MAXBLOCKSIZE];
|
||
|
|
symmetric_CTR ctr;
|
||
|
|
omac_state headeromac, ctomac;
|
||
|
|
} eax_state;
|
||
|
|
|
||
|
|
int eax_init(eax_state *eax, int cipher, const unsigned char *key, unsigned long keylen,
|
||
|
|
const unsigned char *nonce, unsigned long noncelen,
|
||
|
|
const unsigned char *header, unsigned long headerlen);
|
||
|
|
|
||
|
|
int eax_encrypt(eax_state *eax, const unsigned char *pt, unsigned char *ct, unsigned long length);
|
||
|
|
int eax_decrypt(eax_state *eax, const unsigned char *ct, unsigned char *pt, unsigned long length);
|
||
|
|
int eax_addheader(eax_state *eax, const unsigned char *header, unsigned long length);
|
||
|
|
int eax_done(eax_state *eax, unsigned char *tag, unsigned long *taglen);
|
||
|
|
|
||
|
|
int eax_encrypt_authenticate_memory(int cipher,
|
||
|
|
const unsigned char *key, unsigned long keylen,
|
||
|
|
const unsigned char *nonce, unsigned long noncelen,
|
||
|
|
const unsigned char *header, unsigned long headerlen,
|
||
|
|
const unsigned char *pt, unsigned long ptlen,
|
||
|
|
unsigned char *ct,
|
||
|
|
unsigned char *tag, unsigned long *taglen);
|
||
|
|
|
||
|
|
int eax_decrypt_verify_memory(int cipher,
|
||
|
|
const unsigned char *key, unsigned long keylen,
|
||
|
|
const unsigned char *nonce, unsigned long noncelen,
|
||
|
|
const unsigned char *header, unsigned long headerlen,
|
||
|
|
const unsigned char *ct, unsigned long ctlen,
|
||
|
|
unsigned char *pt,
|
||
|
|
unsigned char *tag, unsigned long taglen,
|
||
|
|
int *stat);
|
||
|
|
|
||
|
|
int eax_test(void);
|
||
|
|
#endif /* EAX MODE */
|
||
|
|
|
||
|
|
#ifdef OCB_MODE
|
||
|
|
typedef struct {
|
||
|
|
unsigned char L[MAXBLOCKSIZE], /* L value */
|
||
|
|
Ls[32][MAXBLOCKSIZE], /* L shifted by i bits to the left */
|
||
|
|
Li[MAXBLOCKSIZE], /* value of Li [current value, we calc from previous recall] */
|
||
|
|
Lr[MAXBLOCKSIZE], /* L * x^-1 */
|
||
|
|
R[MAXBLOCKSIZE], /* R value */
|
||
|
|
checksum[MAXBLOCKSIZE]; /* current checksum */
|
||
|
|
|
||
|
|
symmetric_key key; /* scheduled key for cipher */
|
||
|
|
unsigned long block_index; /* index # for current block */
|
||
|
|
int cipher, /* cipher idx */
|
||
|
|
block_len; /* length of block */
|
||
|
|
} ocb_state;
|
||
|
|
|
||
|
|
int ocb_init(ocb_state *ocb, int cipher,
|
||
|
|
const unsigned char *key, unsigned long keylen, const unsigned char *nonce);
|
||
|
|
|
||
|
|
int ocb_encrypt(ocb_state *ocb, const unsigned char *pt, unsigned char *ct);
|
||
|
|
int ocb_decrypt(ocb_state *ocb, const unsigned char *ct, unsigned char *pt);
|
||
|
|
|
||
|
|
int ocb_done_encrypt(ocb_state *ocb,
|
||
|
|
const unsigned char *pt, unsigned long ptlen,
|
||
|
|
unsigned char *ct,
|
||
|
|
unsigned char *tag, unsigned long *taglen);
|
||
|
|
|
||
|
|
int ocb_done_decrypt(ocb_state *ocb,
|
||
|
|
const unsigned char *ct, unsigned long ctlen,
|
||
|
|
unsigned char *pt,
|
||
|
|
const unsigned char *tag, unsigned long taglen, int *stat);
|
||
|
|
|
||
|
|
int ocb_encrypt_authenticate_memory(int cipher,
|
||
|
|
const unsigned char *key, unsigned long keylen,
|
||
|
|
const unsigned char *nonce,
|
||
|
|
const unsigned char *pt, unsigned long ptlen,
|
||
|
|
unsigned char *ct,
|
||
|
|
unsigned char *tag, unsigned long *taglen);
|
||
|
|
|
||
|
|
int ocb_decrypt_verify_memory(int cipher,
|
||
|
|
const unsigned char *key, unsigned long keylen,
|
||
|
|
const unsigned char *nonce,
|
||
|
|
const unsigned char *ct, unsigned long ctlen,
|
||
|
|
unsigned char *pt,
|
||
|
|
const unsigned char *tag, unsigned long taglen,
|
||
|
|
int *stat);
|
||
|
|
|
||
|
|
int ocb_test(void);
|
||
|
|
|
||
|
|
/* internal functions */
|
||
|
|
void ocb_shift_xor(ocb_state *ocb, unsigned char *Z);
|
||
|
|
int ocb_ntz(unsigned long x);
|
||
|
|
int s_ocb_done(ocb_state *ocb, const unsigned char *pt, unsigned long ptlen,
|
||
|
|
unsigned char *ct, unsigned char *tag, unsigned long *taglen, int mode);
|
||
|
|
|
||
|
|
#endif /* OCB_MODE */
|