--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mycrypt_pk.h	Mon May 31 18:21:40 2004 +0000
@@ -0,0 +1,245 @@
+/* ---- NUMBER THEORY ---- */
+#ifdef MPI
+
+#include "tommath.h"
+
+/* in/out macros */
+#define OUTPUT_BIGNUM(num, out, y, z)                                                             \
+{                                                                                                 \
+      if ((y + 4) > *outlen) { return CRYPT_BUFFER_OVERFLOW; }                                    \
+      z = (unsigned long)mp_unsigned_bin_size(num);                                               \
+      STORE32L(z, out+y);                                                                         \
+      y += 4;                                                                                     \
+      if ((y + z) > *outlen) { return CRYPT_BUFFER_OVERFLOW; }                                    \
+      if ((err = mp_to_unsigned_bin(num, out+y)) != MP_OKAY) { return mpi_to_ltc_error(err); }    \
+      y += z;                                                                                     \
+}
+
+
+#define INPUT_BIGNUM(num, in, x, y, inlen)                       \
+{                                                                \
+     /* load value */                                            \
+     if ((y + 4) > inlen) {                                      \
+        err = CRYPT_INVALID_PACKET;                              \
+        goto error;                                              \
+     }                                                           \
+     LOAD32L(x, in+y);                                           \
+     y += 4;                                                     \
+                                                                 \
+     /* sanity check... */                                       \
+     if ((x+y) > inlen) {                                        \
+        err = CRYPT_INVALID_PACKET;                              \
+        goto error;                                              \
+     }                                                           \
+                                                                 \
+     /* load it */                                               \
+     if ((err = mp_read_unsigned_bin(num, (unsigned char *)in+y, (int)x)) != MP_OKAY) {\
+        err = mpi_to_ltc_error(err);                             \
+        goto error;                                              \
+     }                                                           \
+     y += x;                                                     \
+     if ((err = mp_shrink(num)) != MP_OKAY) {                    \
+        err = mpi_to_ltc_error(err);                             \
+        goto error;                                              \
+     }                                                           \
+}
+
+extern int is_prime(mp_int *, int *);
+extern int rand_prime(mp_int *N, long len, prng_state *prng, int wprng);
+
+#else
+   #ifdef MRSA
+      #error RSA requires the big int library 
+   #endif
+   #ifdef MECC
+      #error ECC requires the big int library 
+   #endif
+   #ifdef MDH
+      #error DH requires the big int library 
+   #endif
+   #ifdef MDSA
+      #error DSA requires the big int library 
+   #endif
+#endif /* MPI */
+
+
+/* ---- PUBLIC KEY CRYPTO ---- */
+
+#define PK_PRIVATE            0        /* PK private keys */
+#define PK_PUBLIC             1        /* PK public keys */
+#define PK_PRIVATE_OPTIMIZED  2        /* PK private key [rsa optimized] */
+
+/* ---- PACKET ---- */
+#ifdef PACKET
+
+extern void packet_store_header(unsigned char *dst, int section, int subsection);
+extern int packet_valid_header(unsigned char *src, int section, int subsection);
+
+#endif
+
+
+/* ---- RSA ---- */
+#ifdef MRSA
+
+/* Min and Max RSA key sizes (in bits) */
+#define MIN_RSA_SIZE 1024
+#define MAX_RSA_SIZE 4096
+
+/* Stack required for temps (plus padding) */
+#define RSA_STACK    (8 + (MAX_RSA_SIZE/8))
+
+typedef struct Rsa_key {
+    int type;
+    mp_int e, d, N, qP, pQ, dP, dQ, p, q;
+} rsa_key;
+
+extern int rsa_make_key(prng_state *prng, int wprng, int size, long e, rsa_key *key);
+
+extern int rsa_exptmod(const unsigned char *in,  unsigned long inlen, 
+                             unsigned char *out, unsigned long *outlen, int which, 
+                             rsa_key *key);
+
+extern int rsa_pad(const unsigned char *in,  unsigned long inlen, 
+                         unsigned char *out, unsigned long *outlen, 
+                         int wprng, prng_state *prng);
+
+extern int rsa_signpad(const unsigned char *in,  unsigned long inlen, 
+                             unsigned char *out, unsigned long *outlen);
+
+extern int rsa_depad(const unsigned char *in,  unsigned long inlen, 
+                           unsigned char *out, unsigned long *outlen);
+
+extern int rsa_signdepad(const unsigned char *in,  unsigned long inlen,
+                               unsigned char *out, unsigned long *outlen);
+
+
+extern void rsa_free(rsa_key *key);
+
+extern int rsa_encrypt_key(const unsigned char *inkey, unsigned long inlen,
+                                 unsigned char *outkey, unsigned long *outlen,
+                                 prng_state *prng, int wprng, rsa_key *key);
+
+extern int rsa_decrypt_key(const unsigned char *in, unsigned long inlen,
+                                 unsigned char *outkey, unsigned long *keylen, 
+                                 rsa_key *key);
+
+extern int rsa_sign_hash(const unsigned char *in,  unsigned long inlen, 
+                               unsigned char *out, unsigned long *outlen, 
+                               rsa_key *key);
+
+extern int rsa_verify_hash(const unsigned char *sig, unsigned long siglen,
+                           const unsigned char *hash, int *stat, rsa_key *key);
+
+extern int rsa_export(unsigned char *out, unsigned long *outlen, int type, rsa_key *key);
+extern int rsa_import(const unsigned char *in, unsigned long inlen, rsa_key *key);
+#endif
+
+/* ---- DH Routines ---- */
+#ifdef MDH 
+
+typedef struct Dh_key {
+    int idx, type;
+    mp_int x, y;
+} dh_key;
+
+extern int dh_test(void);
+extern void dh_sizes(int *low, int *high);
+extern int dh_get_size(dh_key *key);
+
+extern int dh_make_key(prng_state *prng, int wprng, int keysize, dh_key *key);
+extern void dh_free(dh_key *key);
+
+extern int dh_export(unsigned char *out, unsigned long *outlen, int type, dh_key *key);
+extern int dh_import(const unsigned char *in, unsigned long inlen, dh_key *key);
+
+extern int dh_shared_secret(dh_key *private_key, dh_key *public_key,
+                            unsigned char *out, unsigned long *outlen);
+
+extern int dh_encrypt_key(const unsigned char *inkey, unsigned long keylen,
+                                unsigned char *out,  unsigned long *len, 
+                                prng_state *prng, int wprng, int hash, 
+                                dh_key *key);
+
+extern int dh_decrypt_key(const unsigned char *in,  unsigned long inlen, 
+                                unsigned char *outkey, unsigned long *keylen, 
+                                dh_key *key);
+
+extern int dh_sign_hash(const unsigned char *in,  unsigned long inlen,
+                              unsigned char *out, unsigned long *outlen,
+                              prng_state *prng, int wprng, dh_key *key);
+
+extern int dh_verify_hash(const unsigned char *sig, unsigned long siglen,
+                          const unsigned char *hash, unsigned long hashlen, 
+                                int *stat, dh_key *key);
+
+
+#endif
+
+/* ---- ECC Routines ---- */
+#ifdef MECC
+typedef struct {
+    mp_int x, y;
+} ecc_point;
+
+typedef struct {
+    int type, idx;
+    ecc_point pubkey;
+    mp_int k;
+} ecc_key;
+
+extern int ecc_test(void);
+extern void ecc_sizes(int *low, int *high);
+extern int ecc_get_size(ecc_key *key);
+
+extern int ecc_make_key(prng_state *prng, int wprng, int keysize, ecc_key *key);
+extern void ecc_free(ecc_key *key);
+
+extern int ecc_export(unsigned char *out, unsigned long *outlen, int type, ecc_key *key);
+extern int ecc_import(const unsigned char *in, unsigned long inlen, ecc_key *key);
+
+extern int ecc_shared_secret(ecc_key *private_key, ecc_key *public_key, 
+                             unsigned char *out, unsigned long *outlen);
+
+extern int ecc_encrypt_key(const unsigned char *inkey, unsigned long keylen,
+                                 unsigned char *out,  unsigned long *len, 
+                                 prng_state *prng, int wprng, int hash, 
+                                 ecc_key *key);
+
+extern int ecc_decrypt_key(const unsigned char *in, unsigned long inlen,
+                                 unsigned char *outkey, unsigned long *keylen, 
+                                 ecc_key *key);
+
+extern int ecc_sign_hash(const unsigned char *in,  unsigned long inlen,
+                               unsigned char *out, unsigned long *outlen,
+                               prng_state *prng, int wprng, ecc_key *key);
+
+extern int ecc_verify_hash(const unsigned char *sig,  unsigned long siglen,
+                           const unsigned char *hash, unsigned long hashlen, 
+                                 int *stat, ecc_key *key);
+#endif
+
+#ifdef MDSA
+
+typedef struct {
+   int type, qord;
+   mp_int g, q, p, x, y;
+} dsa_key;
+
+extern int dsa_make_key(prng_state *prng, int wprng, int group_size, int modulus_size, dsa_key *key);
+extern void dsa_free(dsa_key *key);
+
+extern int dsa_sign_hash(const unsigned char *in,  unsigned long inlen,
+                        unsigned char *out, unsigned long *outlen,
+                        prng_state *prng, int wprng, dsa_key *key);
+
+extern int dsa_verify_hash(const unsigned char *sig, unsigned long siglen,
+                           const unsigned char *hash, unsigned long inlen, 
+                           int *stat, dsa_key *key);
+
+extern int dsa_import(const unsigned char *in, unsigned long inlen, dsa_key *key);
+
+extern int dsa_export(unsigned char *out, unsigned long *outlen, int type, dsa_key *key);
+
+extern int dsa_verify_key(dsa_key *key, int *stat);
+
+#endif