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-rw-r--r--missing/crypt_r.c76
1 files changed, 33 insertions, 43 deletions
diff --git a/missing/crypt_r.c b/missing/crypt_r.c
index 67dd50f062..1b6d62ae6f 100644
--- a/missing/crypt_r.c
+++ b/missing/crypt_r.c
@@ -129,10 +129,10 @@ static char sccsid[] = "@(#)crypt.c 8.1 (Berkeley) 6/4/93";
{ C_block tblk; permute((cpp),&tblk,(p),4); LOAD ((d),(d0),(d1),tblk); }
STATIC void
-permute(unsigned char *cp, C_block *out, register C_block *p, int chars_in)
+permute(const unsigned char *cp, C_block *out, register const C_block *p, int chars_in)
{
register DCL_BLOCK(D,D0,D1);
- register C_block *tp;
+ register const C_block *tp;
register int t;
ZERO(D,D0,D1);
@@ -304,6 +304,9 @@ static const unsigned char itoa64[] = /* 0..63 => ascii-64 */
STATIC void init_des(struct crypt_data *);
STATIC void init_perm(C_block perm[64/CHUNKBITS][1<<CHUNKBITS], unsigned char p[64], int chars_in, int chars_out);
+static void des_setkey_r(const unsigned char *key, struct crypt_data *data);
+static void des_cipher_r(const unsigned char *in, unsigned char *out, long salt, int num_iter, struct crypt_data *data);
+
static struct crypt_data default_crypt_data;
/*
@@ -335,7 +338,7 @@ crypt_r(const char *key, const char *setting, struct crypt_data *data)
key++;
keyblock.b[i] = t;
}
- des_setkey_r((char *)keyblock.b, data); /* also initializes "a64toi" */
+ des_setkey_r(keyblock.b, data); /* also initializes "a64toi" */
encp = &cryptresult[0];
switch (*setting) {
@@ -344,14 +347,13 @@ crypt_r(const char *key, const char *setting, struct crypt_data *data)
* Involve the rest of the password 8 characters at a time.
*/
while (*key) {
- des_cipher_r((char *)&keyblock,
- (char *)&keyblock, 0L, 1, data);
+ des_cipher_r(keyblock.b, keyblock.b, 0L, 1, data);
for (i = 0; i < 8; i++) {
if ((t = 2*(unsigned char)(*key)) != 0)
key++;
keyblock.b[i] ^= t;
}
- des_setkey_r((char *)keyblock.b, data);
+ des_setkey_r(keyblock.b, data);
}
*encp++ = *setting++;
@@ -381,8 +383,7 @@ crypt_r(const char *key, const char *setting, struct crypt_data *data)
salt = (salt<<6) | a64toi[t];
}
encp += salt_size;
- des_cipher_r((char *)&constdatablock, (char *)&rsltblock,
- salt, num_iter, data);
+ des_cipher_r(constdatablock.b, rsltblock.b, salt, num_iter, data);
/*
* Encode the 64 cipher bits as 11 ascii characters.
@@ -410,18 +411,13 @@ crypt_r(const char *key, const char *setting, struct crypt_data *data)
/*
* Set up the key schedule from the key.
*/
-void
-des_setkey(const char *key)
-{
- des_setkey_r(key, &default_crypt_data);
-}
-
-void
-des_setkey_r(const char *key, struct crypt_data *data)
+static void
+des_setkey_r(const unsigned char *key, struct crypt_data *data)
{
register DCL_BLOCK(K, K0, K1);
- register C_block *ptabp;
+ register const C_block *ptabp;
register int i;
+ C_block *ksp;
if (!des_ready) {
memset(data, 0, sizeof(*data));
@@ -429,15 +425,15 @@ des_setkey_r(const char *key, struct crypt_data *data)
des_ready = 1;
}
- PERM6464(K,K0,K1,(unsigned char *)key,(C_block *)PC1ROT);
- key = (char *)&KS[0];
- STORE(K&~0x03030303L, K0&~0x03030303L, K1, *(C_block *)key);
+ PERM6464(K,K0,K1,key,PC1ROT[0]);
+ ksp = &KS[0];
+ STORE(K&~0x03030303L, K0&~0x03030303L, K1, *ksp);
for (i = 1; i < 16; i++) {
- key += sizeof(C_block);
- STORE(K,K0,K1,*(C_block *)key);
- ptabp = (C_block *)PC2ROT[Rotates[i]-1];
- PERM6464(K,K0,K1,(unsigned char *)key,ptabp);
- STORE(K&~0x03030303L, K0&~0x03030303L, K1, *(C_block *)key);
+ ksp++;
+ STORE(K,K0,K1,*ksp);
+ ptabp = PC2ROT[Rotates[i]-1][0];
+ PERM6464(K,K0,K1,ksp->b,ptabp);
+ STORE(K&~0x03030303L, K0&~0x03030303L, K1, *ksp);
}
}
@@ -450,20 +446,14 @@ des_setkey_r(const char *key, struct crypt_data *data)
* compiler and machine architecture.
*/
void
-des_cipher(const char *in, char *out, long salt, int num_iter)
-{
- des_cipher_r(in, out, salt, num_iter, &default_crypt_data);
-}
-
-void
-des_cipher_r(const char *in, char *out, long salt, int num_iter, struct crypt_data *data)
+des_cipher_r(const unsigned char *in, unsigned char *out, long salt, int num_iter, struct crypt_data *data)
{
/* variables that we want in registers, most important first */
#if defined(pdp11)
register int j;
#endif
register long L0, L1, R0, R1, k;
- register C_block *kp;
+ register const C_block *kp;
register int ks_inc, loop_count;
C_block B;
@@ -492,26 +482,26 @@ des_cipher_r(const char *in, char *out, long salt, int num_iter, struct crypt_da
R1 = (R1 >> 1) & 0x55555555L;
L1 = R0 | R1; /* L1 is the odd-numbered input bits */
STORE(L,L0,L1,B);
- PERM3264(L,L0,L1,B.b, (C_block *)IE3264); /* even bits */
- PERM3264(R,R0,R1,B.b+4,(C_block *)IE3264); /* odd bits */
+ PERM3264(L,L0,L1,B.b, IE3264[0]); /* even bits */
+ PERM3264(R,R0,R1,B.b+4,IE3264[0]); /* odd bits */
if (num_iter >= 0)
{ /* encryption */
kp = &KS[0];
- ks_inc = (int)sizeof(*kp);
+ ks_inc = +1;
}
else
{ /* decryption */
num_iter = -num_iter;
kp = &KS[KS_SIZE-1];
- ks_inc = -(int)sizeof(*kp);
+ ks_inc = -1;
}
while (--num_iter >= 0) {
loop_count = 8;
do {
-#define SPTAB(t, i) (*(long *)((unsigned char *)(t) + (i)*(sizeof(long)/4)))
+#define SPTAB(t, i) (*(const long *)((const unsigned char *)(t) + (i)*(sizeof(long)/4)))
#if defined(gould)
/* use this if B.b[i] is evaluated just once ... */
#define DOXOR(x,y,i) (x)^=SPTAB(SPE[0][(i)],B.b[(i)]); (y)^=SPTAB(SPE[1][(i)],B.b[(i)]);
@@ -529,7 +519,7 @@ des_cipher_r(const char *in, char *out, long salt, int num_iter, struct crypt_da
k = ((q0) ^ (q1)) & SALT; \
B.b32.i0 = k ^ (q0) ^ kp->b32.i0; \
B.b32.i1 = k ^ (q1) ^ kp->b32.i1; \
- kp = (C_block *)((char *)kp+ks_inc); \
+ kp += ks_inc; \
\
DOXOR((p0), (p1), 0); \
DOXOR((p0), (p1), 1); \
@@ -543,7 +533,7 @@ des_cipher_r(const char *in, char *out, long salt, int num_iter, struct crypt_da
CRUNCH(L0, L1, R0, R1);
CRUNCH(R0, R1, L0, L1);
} while (--loop_count != 0);
- kp = (C_block *)((char *)kp-(ks_inc*KS_SIZE));
+ kp -= (ks_inc*KS_SIZE);
/* swap L and R */
@@ -556,7 +546,7 @@ des_cipher_r(const char *in, char *out, long salt, int num_iter, struct crypt_da
L0 = ((L0 >> 3) & 0x0f0f0f0fL) | ((L1 << 1) & 0xf0f0f0f0L);
L1 = ((R0 >> 3) & 0x0f0f0f0fL) | ((R1 << 1) & 0xf0f0f0f0L);
STORE(L,L0,L1,B);
- PERM6464(L,L0,L1,B.b, (C_block *)CF6464);
+ PERM6464(L,L0,L1,B.b, CF6464[0]);
#if defined(MUST_ALIGN)
STORE(L,L0,L1,B);
out[0] = B.b[0]; out[1] = B.b[1]; out[2] = B.b[2]; out[3] = B.b[3];
@@ -757,7 +747,7 @@ setkey_r(const char *key, struct crypt_data *data)
}
keyblock.b[i] = k;
}
- des_setkey_r((char *)keyblock.b, data);
+ des_setkey_r(keyblock.b, data);
}
/*
@@ -783,7 +773,7 @@ encrypt_r(char *block, int flag, struct crypt_data *data)
}
cblock.b[i] = k;
}
- des_cipher_r((char *)&cblock, (char *)&cblock, 0L, (flag ? -1: 1), data);
+ des_cipher_r(cblock.b, cblock.b, 0L, (flag ? -1: 1), data);
for (i = 7; i >= 0; i--) {
k = cblock.b[i];
for (j = 7; j >= 0; j--) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 14:30:55 +0000