initial cleanup of unused parts of ltc

[zpackage] / libtomcrypt / src / pk / katja / katja_decrypt_key.c

diff --git a/libtomcrypt/src/pk/katja/katja_decrypt_key.c b/libtomcrypt/src/pk/katja/katja_decrypt_key.c
deleted file mode 100644 (file)
index 72009b0..0000000
--- a/libtomcrypt/src/pk/katja/katja_decrypt_key.c
+++ /dev/null
@@ -1,103 +0,0 @@
-/* LibTomCrypt, modular cryptographic library -- Tom St Denis
- *
- * LibTomCrypt is a library that provides various cryptographic
- * algorithms in a highly modular and flexible manner.
- *
- * The library is free for all purposes without any express
- * guarantee it works.
- */
-#include "tomcrypt.h"
-
-/**
-  @file katja_decrypt_key.c
-  Katja PKCS #1 OAEP Decryption, Tom St Denis
-*/
-
-#ifdef LTC_MKAT
-
-/**
-   (PKCS #1 v2.0) decrypt then OAEP depad
-   @param in          The ciphertext
-   @param inlen       The length of the ciphertext (octets)
-   @param out         [out] The plaintext
-   @param outlen      [in/out] The max size and resulting size of the plaintext (octets)
-   @param lparam      The system "lparam" value
-   @param lparamlen   The length of the lparam value (octets)
-   @param hash_idx    The index of the hash desired
-   @param stat        [out] Result of the decryption, 1==valid, 0==invalid
-   @param key         The corresponding private Katja key
-   @return CRYPT_OK if succcessul (even if invalid)
-*/
-int katja_decrypt_key(const unsigned char *in,       unsigned long  inlen,
-                          unsigned char *out,      unsigned long *outlen,
-                    const unsigned char *lparam,   unsigned long  lparamlen,
-                          int            hash_idx, int           *stat,
-                          katja_key       *key)
-{
-  unsigned long modulus_bitlen, modulus_bytelen, x;
-  int           err;
-  unsigned char *tmp;
-
-  LTC_ARGCHK(out    != NULL);
-  LTC_ARGCHK(outlen != NULL);
-  LTC_ARGCHK(key    != NULL);
-  LTC_ARGCHK(stat   != NULL);
-
-  /* default to invalid */
-  *stat = 0;
-
-  /* valid hash ? */
-  if ((err = hash_is_valid(hash_idx)) != CRYPT_OK) {
-     return err;
-  }
-
-  /* get modulus len in bits */
-  modulus_bitlen = mp_count_bits( (key->N));
-
-  /* payload is upto pq, so we know q is 1/3rd the size of N and therefore pq is 2/3th the size */
- modulus_bitlen = ((modulus_bitlen << 1) / 3);
-
-  /* round down to next byte */
-  modulus_bitlen -= (modulus_bitlen & 7) + 8;
-
-  /* outlen must be at least the size of the modulus */
-  modulus_bytelen = mp_unsigned_bin_size( (key->N));
-  if (modulus_bytelen != inlen) {
-     return CRYPT_INVALID_PACKET;
-  }
-
-  /* allocate ram */
-  tmp = XMALLOC(inlen);
-  if (tmp == NULL) {
-     return CRYPT_MEM;
-  }
-
-  /* rsa decode the packet */
-  x = inlen;
-  if ((err = katja_exptmod(in, inlen, tmp, &x, PK_PRIVATE, key)) != CRYPT_OK) {
-     XFREE(tmp);
-     return err;
-  }
-
-  /* shift right by modulus_bytelen - modulus_bitlen/8  bytes */
-  for (x = 0; x < (modulus_bitlen >> 3); x++) {
-     tmp[x] = tmp[x+(modulus_bytelen-(modulus_bitlen>>3))];
-  }
-
-  /* now OAEP decode the packet */
-  err = pkcs_1_oaep_decode(tmp, x, lparam, lparamlen, modulus_bitlen, hash_idx,
-                           out, outlen, stat);
-
-  XFREE(tmp);
-  return err;
-}
-
-#endif /* LTC_MRSA */
-
-
-
-
-
-/* ref:         $Format:%D$ */
-/* git commit:  $Format:%H$ */
-/* commit time: $Format:%ai$ */