TeaSpeak/tomcrypt
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xtea: trim trailing spaces

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This commit is contained in:
Steffen Jaeckel 2012-07-02 12:05:48 +02:00
parent e531af7add
commit fa7051c21e
1 changed files with 13 additions and 13 deletions
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26
src/ciphers/xtea.c
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@ -34,7 +34,7 @@ const struct ltc_cipher_descriptor xtea_desc =
int xtea_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey) int xtea_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey)
{ {
unsigned long x, sum, K[4]; unsigned long x, sum, K[4];
LTC_ARGCHK(key != NULL); LTC_ARGCHK(key != NULL);
LTC_ARGCHK(skey != NULL); LTC_ARGCHK(skey != NULL);
@ -52,17 +52,17 @@ int xtea_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_k
LOAD32L(K[1], key+4); LOAD32L(K[1], key+4);
LOAD32L(K[2], key+8); LOAD32L(K[2], key+8);
LOAD32L(K[3], key+12); LOAD32L(K[3], key+12);
for (x = sum = 0; x < 32; x++) { for (x = sum = 0; x < 32; x++) {
skey->xtea.A[x] = (sum + K[sum&3]) & 0xFFFFFFFFUL; skey->xtea.A[x] = (sum + K[sum&3]) & 0xFFFFFFFFUL;
sum = (sum + 0x9E3779B9UL) & 0xFFFFFFFFUL; sum = (sum + 0x9E3779B9UL) & 0xFFFFFFFFUL;
skey->xtea.B[x] = (sum + K[(sum>>11)&3]) & 0xFFFFFFFFUL; skey->xtea.B[x] = (sum + K[(sum>>11)&3]) & 0xFFFFFFFFUL;
} }
#ifdef LTC_CLEAN_STACK #ifdef LTC_CLEAN_STACK
zeromem(&K, sizeof(K)); zeromem(&K, sizeof(K));
#endif #endif
return CRYPT_OK; return CRYPT_OK;
} }
@ -106,7 +106,7 @@ int xtea_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *
Decrypts a block of text with LTC_XTEA Decrypts a block of text with LTC_XTEA
@param ct The input ciphertext (8 bytes) @param ct The input ciphertext (8 bytes)
@param pt The output plaintext (8 bytes) @param pt The output plaintext (8 bytes)
@param skey The key as scheduled @param skey The key as scheduled
@return CRYPT_OK if successful @return CRYPT_OK if successful
*/ */
int xtea_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey) int xtea_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey)
@ -146,13 +146,13 @@ int xtea_test(void)
{ {
#ifndef LTC_TEST #ifndef LTC_TEST
return CRYPT_NOP; return CRYPT_NOP;
#else #else
static const unsigned char key[16] = static const unsigned char key[16] =
{ 0x78, 0x56, 0x34, 0x12, 0xf0, 0xcd, 0xcb, 0x9a, { 0x78, 0x56, 0x34, 0x12, 0xf0, 0xcd, 0xcb, 0x9a,
0x48, 0x37, 0x26, 0x15, 0xc0, 0xbf, 0xae, 0x9d }; 0x48, 0x37, 0x26, 0x15, 0xc0, 0xbf, 0xae, 0x9d };
static const unsigned char pt[8] = static const unsigned char pt[8] =
{ 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 }; { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 };
static const unsigned char ct[8] = static const unsigned char ct[8] =
{ 0x75, 0xd7, 0xc5, 0xbf, 0xcf, 0x58, 0xc9, 0x3f }; { 0x75, 0xd7, 0xc5, 0xbf, 0xcf, 0x58, 0xc9, 0x3f };
unsigned char tmp[2][8]; unsigned char tmp[2][8];
symmetric_key skey; symmetric_key skey;
@ -164,7 +164,7 @@ int xtea_test(void)
xtea_ecb_encrypt(pt, tmp[0], &skey); xtea_ecb_encrypt(pt, tmp[0], &skey);
xtea_ecb_decrypt(tmp[0], tmp[1], &skey); xtea_ecb_decrypt(tmp[0], tmp[1], &skey);
if (XMEMCMP(tmp[0], ct, 8) != 0 || XMEMCMP(tmp[1], pt, 8) != 0) { if (XMEMCMP(tmp[0], ct, 8) != 0 || XMEMCMP(tmp[1], pt, 8) != 0) {
return CRYPT_FAIL_TESTVECTOR; return CRYPT_FAIL_TESTVECTOR;
} }
@ -178,7 +178,7 @@ int xtea_test(void)
#endif #endif
} }
/** Terminate the context /** Terminate the context
@param skey The scheduled key @param skey The scheduled key
*/ */
void xtea_done(symmetric_key *skey) void xtea_done(symmetric_key *skey)
@ -194,7 +194,7 @@ int xtea_keysize(int *keysize)
{ {
LTC_ARGCHK(keysize != NULL); LTC_ARGCHK(keysize != NULL);
if (*keysize < 16) { if (*keysize < 16) {
return CRYPT_INVALID_KEYSIZE; return CRYPT_INVALID_KEYSIZE;
} }
*keysize = 16; *keysize = 16;
return CRYPT_OK; return CRYPT_OK;