Document stuff, reduce magic numbers, add emacs magic

svn:r1502

11 files changed, 317 insertions, 236 deletions

diff --git a/src/common/aes.c b/src/common/aes.c
index e4b3c8316..2d3f25cd5 100644
--- a/src/common/aes.c
+++ b/src/common/aes.c
@@ -844,9 +844,9 @@ static const u32 Td4[256] = {
 };
 #endif
 static const u32 rcon[] = {
-	0x01000000, 0x02000000, 0x04000000, 0x08000000,
-	0x10000000, 0x20000000, 0x40000000, 0x80000000,
-	0x1B000000, 0x36000000, /* for 128-bit blocks, Rijndael never uses more than 10 rcon values */
+        0x01000000, 0x02000000, 0x04000000, 0x08000000,
+        0x10000000, 0x20000000, 0x40000000, 0x80000000,
+        0x1B000000, 0x36000000, /* for 128-bit blocks, Rijndael never uses more than 10 rcon values */
 };
 
 #define SWAP(x) (_lrotl(x, 8) & 0x00ff00ff | _lrotr(x, 8) & 0xff00ff00)
@@ -862,196 +862,196 @@ static const u32 rcon[] = {
 /**
  * Expand the cipher key into the encryption key schedule.
  *
- * @return	the number of rounds for the given cipher key size.
+ * @return      the number of rounds for the given cipher key size.
  */
 int rijndaelKeySetupEnc(u32 rk[/*4*(Nr + 1)*/], const u8 cipherKey[], int keyBits) {
-   	int i = 0;
-	u32 temp;
+        int i = 0;
+        u32 temp;
 
-	rk[0] = GETU32(cipherKey     );
-	rk[1] = GETU32(cipherKey +  4);
-	rk[2] = GETU32(cipherKey +  8);
-	rk[3] = GETU32(cipherKey + 12);
-	if (keyBits == 128) {
-		for (;;) {
-			temp  = rk[3];
-			rk[4] = rk[0] ^
-				(Te4[(temp >> 16) & 0xff] & 0xff000000) ^
-				(Te4[(temp >>  8) & 0xff] & 0x00ff0000) ^
-				(Te4[(temp      ) & 0xff] & 0x0000ff00) ^
-				(Te4[(temp >> 24)       ] & 0x000000ff) ^
-				rcon[i];
-			rk[5] = rk[1] ^ rk[4];
-			rk[6] = rk[2] ^ rk[5];
-			rk[7] = rk[3] ^ rk[6];
-			if (++i == 10) {
-				return 10;
-			}
-			rk += 4;
-		}
-	}
-	rk[4] = GETU32(cipherKey + 16);
-	rk[5] = GETU32(cipherKey + 20);
-	if (keyBits == 192) {
-		for (;;) {
-			temp = rk[ 5];
-			rk[ 6] = rk[ 0] ^
-				(Te4[(temp >> 16) & 0xff] & 0xff000000) ^
-				(Te4[(temp >>  8) & 0xff] & 0x00ff0000) ^
-				(Te4[(temp      ) & 0xff] & 0x0000ff00) ^
-				(Te4[(temp >> 24)       ] & 0x000000ff) ^
-				rcon[i];
-			rk[ 7] = rk[ 1] ^ rk[ 6];
-			rk[ 8] = rk[ 2] ^ rk[ 7];
-			rk[ 9] = rk[ 3] ^ rk[ 8];
-			if (++i == 8) {
-				return 12;
-			}
-			rk[10] = rk[ 4] ^ rk[ 9];
-			rk[11] = rk[ 5] ^ rk[10];
-			rk += 6;
-		}
-	}
-	rk[6] = GETU32(cipherKey + 24);
-	rk[7] = GETU32(cipherKey + 28);
-	if (keyBits == 256) {
+        rk[0] = GETU32(cipherKey     );
+        rk[1] = GETU32(cipherKey +  4);
+        rk[2] = GETU32(cipherKey +  8);
+        rk[3] = GETU32(cipherKey + 12);
+        if (keyBits == 128) {
+                for (;;) {
+                        temp  = rk[3];
+                        rk[4] = rk[0] ^
+                                (Te4[(temp >> 16) & 0xff] & 0xff000000) ^
+                                (Te4[(temp >>  8) & 0xff] & 0x00ff0000) ^
+                                (Te4[(temp      ) & 0xff] & 0x0000ff00) ^
+                                (Te4[(temp >> 24)       ] & 0x000000ff) ^
+                                rcon[i];
+                        rk[5] = rk[1] ^ rk[4];
+                        rk[6] = rk[2] ^ rk[5];
+                        rk[7] = rk[3] ^ rk[6];
+                        if (++i == 10) {
+                                return 10;
+                        }
+                        rk += 4;
+                }
+        }
+        rk[4] = GETU32(cipherKey + 16);
+        rk[5] = GETU32(cipherKey + 20);
+        if (keyBits == 192) {
+                for (;;) {
+                        temp = rk[ 5];
+                        rk[ 6] = rk[ 0] ^
+                                (Te4[(temp >> 16) & 0xff] & 0xff000000) ^
+                                (Te4[(temp >>  8) & 0xff] & 0x00ff0000) ^
+                                (Te4[(temp      ) & 0xff] & 0x0000ff00) ^
+                                (Te4[(temp >> 24)       ] & 0x000000ff) ^
+                                rcon[i];
+                        rk[ 7] = rk[ 1] ^ rk[ 6];
+                        rk[ 8] = rk[ 2] ^ rk[ 7];
+                        rk[ 9] = rk[ 3] ^ rk[ 8];
+                        if (++i == 8) {
+                                return 12;
+                        }
+                        rk[10] = rk[ 4] ^ rk[ 9];
+                        rk[11] = rk[ 5] ^ rk[10];
+                        rk += 6;
+                }
+        }
+        rk[6] = GETU32(cipherKey + 24);
+        rk[7] = GETU32(cipherKey + 28);
+        if (keyBits == 256) {
         for (;;) {
-        	temp = rk[ 7];
-        	rk[ 8] = rk[ 0] ^
-        		(Te4[(temp >> 16) & 0xff] & 0xff000000) ^
-        		(Te4[(temp >>  8) & 0xff] & 0x00ff0000) ^
-        		(Te4[(temp      ) & 0xff] & 0x0000ff00) ^
-        		(Te4[(temp >> 24)       ] & 0x000000ff) ^
-        		rcon[i];
-        	rk[ 9] = rk[ 1] ^ rk[ 8];
-        	rk[10] = rk[ 2] ^ rk[ 9];
-        	rk[11] = rk[ 3] ^ rk[10];
-			if (++i == 7) {
-				return 14;
-			}
-        	temp = rk[11];
-        	rk[12] = rk[ 4] ^
-        		(Te4[(temp >> 24)       ] & 0xff000000) ^
-        		(Te4[(temp >> 16) & 0xff] & 0x00ff0000) ^
-        		(Te4[(temp >>  8) & 0xff] & 0x0000ff00) ^
-        		(Te4[(temp      ) & 0xff] & 0x000000ff);
-        	rk[13] = rk[ 5] ^ rk[12];
-        	rk[14] = rk[ 6] ^ rk[13];
-        	rk[15] = rk[ 7] ^ rk[14];
+                temp = rk[ 7];
+                rk[ 8] = rk[ 0] ^
+                        (Te4[(temp >> 16) & 0xff] & 0xff000000) ^
+                        (Te4[(temp >>  8) & 0xff] & 0x00ff0000) ^
+                        (Te4[(temp      ) & 0xff] & 0x0000ff00) ^
+                        (Te4[(temp >> 24)       ] & 0x000000ff) ^
+                        rcon[i];
+                rk[ 9] = rk[ 1] ^ rk[ 8];
+                rk[10] = rk[ 2] ^ rk[ 9];
+                rk[11] = rk[ 3] ^ rk[10];
+                        if (++i == 7) {
+                                return 14;
+                        }
+                temp = rk[11];
+                rk[12] = rk[ 4] ^
+                        (Te4[(temp >> 24)       ] & 0xff000000) ^
+                        (Te4[(temp >> 16) & 0xff] & 0x00ff0000) ^
+                        (Te4[(temp >>  8) & 0xff] & 0x0000ff00) ^
+                        (Te4[(temp      ) & 0xff] & 0x000000ff);
+                rk[13] = rk[ 5] ^ rk[12];
+                rk[14] = rk[ 6] ^ rk[13];
+                rk[15] = rk[ 7] ^ rk[14];
 
-			rk += 8;
+                        rk += 8;
         }
-	}
-	return 0;
+        }
+        return 0;
 }
 
 #if 0
 /**
  * Expand the cipher key into the decryption key schedule.
  *
- * @return	the number of rounds for the given cipher key size.
+ * @return      the number of rounds for the given cipher key size.
  */
 int rijndaelKeySetupDec(u32 rk[/*4*(Nr + 1)*/], const u8 cipherKey[], int keyBits) {
-	int Nr, i, j;
-	u32 temp;
+        int Nr, i, j;
+        u32 temp;
 
-	/* expand the cipher key: */
-	Nr = rijndaelKeySetupEnc(rk, cipherKey, keyBits);
-	/* invert the order of the round keys: */
-	for (i = 0, j = 4*Nr; i < j; i += 4, j -= 4) {
-		temp = rk[i    ]; rk[i    ] = rk[j    ]; rk[j    ] = temp;
-		temp = rk[i + 1]; rk[i + 1] = rk[j + 1]; rk[j + 1] = temp;
-		temp = rk[i + 2]; rk[i + 2] = rk[j + 2]; rk[j + 2] = temp;
-		temp = rk[i + 3]; rk[i + 3] = rk[j + 3]; rk[j + 3] = temp;
-	}
-	/* apply the inverse MixColumn transform to all round keys but the first and the last: */
-	for (i = 1; i < Nr; i++) {
-		rk += 4;
-		rk[0] =
-			Td0[Te4[(rk[0] >> 24)       ] & 0xff] ^
-			Td1[Te4[(rk[0] >> 16) & 0xff] & 0xff] ^
-			Td2[Te4[(rk[0] >>  8) & 0xff] & 0xff] ^
-			Td3[Te4[(rk[0]      ) & 0xff] & 0xff];
-		rk[1] =
-			Td0[Te4[(rk[1] >> 24)       ] & 0xff] ^
-			Td1[Te4[(rk[1] >> 16) & 0xff] & 0xff] ^
-			Td2[Te4[(rk[1] >>  8) & 0xff] & 0xff] ^
-			Td3[Te4[(rk[1]      ) & 0xff] & 0xff];
-		rk[2] =
-			Td0[Te4[(rk[2] >> 24)       ] & 0xff] ^
-			Td1[Te4[(rk[2] >> 16) & 0xff] & 0xff] ^
-			Td2[Te4[(rk[2] >>  8) & 0xff] & 0xff] ^
-			Td3[Te4[(rk[2]      ) & 0xff] & 0xff];
-		rk[3] =
-			Td0[Te4[(rk[3] >> 24)       ] & 0xff] ^
-			Td1[Te4[(rk[3] >> 16) & 0xff] & 0xff] ^
-			Td2[Te4[(rk[3] >>  8) & 0xff] & 0xff] ^
-			Td3[Te4[(rk[3]      ) & 0xff] & 0xff];
-	}
-	return Nr;
+        /* expand the cipher key: */
+        Nr = rijndaelKeySetupEnc(rk, cipherKey, keyBits);
+        /* invert the order of the round keys: */
+        for (i = 0, j = 4*Nr; i < j; i += 4, j -= 4) {
+                temp = rk[i    ]; rk[i    ] = rk[j    ]; rk[j    ] = temp;
+                temp = rk[i + 1]; rk[i + 1] = rk[j + 1]; rk[j + 1] = temp;
+                temp = rk[i + 2]; rk[i + 2] = rk[j + 2]; rk[j + 2] = temp;
+                temp = rk[i + 3]; rk[i + 3] = rk[j + 3]; rk[j + 3] = temp;
+        }
+        /* apply the inverse MixColumn transform to all round keys but the first and the last: */
+        for (i = 1; i < Nr; i++) {
+                rk += 4;
+                rk[0] =
+                        Td0[Te4[(rk[0] >> 24)       ] & 0xff] ^
+                        Td1[Te4[(rk[0] >> 16) & 0xff] & 0xff] ^
+                        Td2[Te4[(rk[0] >>  8) & 0xff] & 0xff] ^
+                        Td3[Te4[(rk[0]      ) & 0xff] & 0xff];
+                rk[1] =
+                        Td0[Te4[(rk[1] >> 24)       ] & 0xff] ^
+                        Td1[Te4[(rk[1] >> 16) & 0xff] & 0xff] ^
+                        Td2[Te4[(rk[1] >>  8) & 0xff] & 0xff] ^
+                        Td3[Te4[(rk[1]      ) & 0xff] & 0xff];
+                rk[2] =
+                        Td0[Te4[(rk[2] >> 24)       ] & 0xff] ^
+                        Td1[Te4[(rk[2] >> 16) & 0xff] & 0xff] ^
+                        Td2[Te4[(rk[2] >>  8) & 0xff] & 0xff] ^
+                        Td3[Te4[(rk[2]      ) & 0xff] & 0xff];
+                rk[3] =
+                        Td0[Te4[(rk[3] >> 24)       ] & 0xff] ^
+                        Td1[Te4[(rk[3] >> 16) & 0xff] & 0xff] ^
+                        Td2[Te4[(rk[3] >>  8) & 0xff] & 0xff] ^
+                        Td3[Te4[(rk[3]      ) & 0xff] & 0xff];
+        }
+        return Nr;
 }
 #endif
 
 void rijndaelEncrypt(const u32 rk[/*4*(Nr + 1)*/], int Nr, const u8 pt[16], u8 ct[16]) {
-	u32 s0, s1, s2, s3, t0, t1, t2, t3;
+        u32 s0, s1, s2, s3, t0, t1, t2, t3;
 #ifndef FULL_UNROLL
     int r;
 #endif /* ?FULL_UNROLL */
 
     /*
-	 * map byte array block to cipher state
-	 * and add initial round key:
-	 */
-	s0 = GETU32(pt     ) ^ rk[0];
-	s1 = GETU32(pt +  4) ^ rk[1];
-	s2 = GETU32(pt +  8) ^ rk[2];
-	s3 = GETU32(pt + 12) ^ rk[3];
+         * map byte array block to cipher state
+         * and add initial round key:
+         */
+        s0 = GETU32(pt     ) ^ rk[0];
+        s1 = GETU32(pt +  4) ^ rk[1];
+        s2 = GETU32(pt +  8) ^ rk[2];
+        s3 = GETU32(pt + 12) ^ rk[3];
 #ifdef FULL_UNROLL
     /* round 1: */
-   	t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >>  8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[ 4];
-   	t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >>  8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[ 5];
-   	t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >>  8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[ 6];
-   	t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >>  8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[ 7];
-   	/* round 2: */
-   	s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >>  8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[ 8];
-   	s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >>  8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[ 9];
-   	s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >>  8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[10];
-   	s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >>  8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[11];
+        t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >>  8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[ 4];
+        t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >>  8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[ 5];
+        t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >>  8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[ 6];
+        t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >>  8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[ 7];
+        /* round 2: */
+        s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >>  8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[ 8];
+        s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >>  8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[ 9];
+        s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >>  8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[10];
+        s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >>  8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[11];
     /* round 3: */
-   	t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >>  8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[12];
-   	t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >>  8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[13];
-   	t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >>  8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[14];
-   	t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >>  8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[15];
-   	/* round 4: */
-   	s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >>  8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[16];
-   	s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >>  8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[17];
-   	s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >>  8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[18];
-   	s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >>  8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[19];
+        t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >>  8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[12];
+        t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >>  8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[13];
+        t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >>  8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[14];
+        t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >>  8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[15];
+        /* round 4: */
+        s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >>  8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[16];
+        s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >>  8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[17];
+        s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >>  8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[18];
+        s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >>  8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[19];
     /* round 5: */
-   	t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >>  8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[20];
-   	t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >>  8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[21];
-   	t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >>  8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[22];
-   	t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >>  8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[23];
-   	/* round 6: */
-   	s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >>  8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[24];
-   	s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >>  8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[25];
-   	s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >>  8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[26];
-   	s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >>  8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[27];
+        t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >>  8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[20];
+        t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >>  8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[21];
+        t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >>  8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[22];
+        t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >>  8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[23];
+        /* round 6: */
+        s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >>  8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[24];
+        s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >>  8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[25];
+        s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >>  8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[26];
+        s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >>  8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[27];
     /* round 7: */
-   	t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >>  8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[28];
-   	t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >>  8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[29];
-   	t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >>  8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[30];
-   	t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >>  8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[31];
-   	/* round 8: */
-   	s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >>  8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[32];
-   	s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >>  8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[33];
-   	s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >>  8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[34];
-   	s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >>  8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[35];
+        t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >>  8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[28];
+        t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >>  8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[29];
+        t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >>  8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[30];
+        t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >>  8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[31];
+        /* round 8: */
+        s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >>  8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[32];
+        s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >>  8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[33];
+        s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >>  8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[34];
+        s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >>  8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[35];
     /* round 9: */
-   	t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >>  8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[36];
-   	t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >>  8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[37];
-   	t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >>  8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[38];
-   	t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >>  8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[39];
+        t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >>  8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[36];
+        t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >>  8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[37];
+        t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >>  8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[38];
+        t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >>  8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[39];
     if (Nr > 10) {
         /* round 10: */
         s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >>  8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[40];
@@ -1079,8 +1079,8 @@ void rijndaelEncrypt(const u32 rk[/*4*(Nr + 1)*/], int Nr, const u8 pt[16], u8 c
     rk += Nr << 2;
 #else  /* !FULL_UNROLL */
     /*
-	 * Nr - 1 full rounds:
-	 */
+         * Nr - 1 full rounds:
+         */
     r = Nr >> 1;
     for (;;) {
         t0 =
@@ -1140,50 +1140,50 @@ void rijndaelEncrypt(const u32 rk[/*4*(Nr + 1)*/], int Nr, const u8 pt[16], u8 c
     }
 #endif /* ?FULL_UNROLL */
     /*
-	 * apply last round and
-	 * map cipher state to byte array block:
-	 */
-	s0 =
-		(Te4[(t0 >> 24)       ] & 0xff000000) ^
-		(Te4[(t1 >> 16) & 0xff] & 0x00ff0000) ^
-		(Te4[(t2 >>  8) & 0xff] & 0x0000ff00) ^
-		(Te4[(t3      ) & 0xff] & 0x000000ff) ^
-		rk[0];
-	PUTU32(ct     , s0);
-	s1 =
-		(Te4[(t1 >> 24)       ] & 0xff000000) ^
-		(Te4[(t2 >> 16) & 0xff] & 0x00ff0000) ^
-		(Te4[(t3 >>  8) & 0xff] & 0x0000ff00) ^
-		(Te4[(t0      ) & 0xff] & 0x000000ff) ^
-		rk[1];
-	PUTU32(ct +  4, s1);
-	s2 =
-		(Te4[(t2 >> 24)       ] & 0xff000000) ^
-		(Te4[(t3 >> 16) & 0xff] & 0x00ff0000) ^
-		(Te4[(t0 >>  8) & 0xff] & 0x0000ff00) ^
-		(Te4[(t1      ) & 0xff] & 0x000000ff) ^
-		rk[2];
-	PUTU32(ct +  8, s2);
-	s3 =
-		(Te4[(t3 >> 24)       ] & 0xff000000) ^
-		(Te4[(t0 >> 16) & 0xff] & 0x00ff0000) ^
-		(Te4[(t1 >>  8) & 0xff] & 0x0000ff00) ^
-		(Te4[(t2      ) & 0xff] & 0x000000ff) ^
-		rk[3];
-	PUTU32(ct + 12, s3);
+         * apply last round and
+         * map cipher state to byte array block:
+         */
+        s0 =
+                (Te4[(t0 >> 24)       ] & 0xff000000) ^
+                (Te4[(t1 >> 16) & 0xff] & 0x00ff0000) ^
+                (Te4[(t2 >>  8) & 0xff] & 0x0000ff00) ^
+                (Te4[(t3      ) & 0xff] & 0x000000ff) ^
+                rk[0];
+        PUTU32(ct     , s0);
+        s1 =
+                (Te4[(t1 >> 24)       ] & 0xff000000) ^
+                (Te4[(t2 >> 16) & 0xff] & 0x00ff0000) ^
+                (Te4[(t3 >>  8) & 0xff] & 0x0000ff00) ^
+                (Te4[(t0      ) & 0xff] & 0x000000ff) ^
+                rk[1];
+        PUTU32(ct +  4, s1);
+        s2 =
+                (Te4[(t2 >> 24)       ] & 0xff000000) ^
+                (Te4[(t3 >> 16) & 0xff] & 0x00ff0000) ^
+                (Te4[(t0 >>  8) & 0xff] & 0x0000ff00) ^
+                (Te4[(t1      ) & 0xff] & 0x000000ff) ^
+                rk[2];
+        PUTU32(ct +  8, s2);
+        s3 =
+                (Te4[(t3 >> 24)       ] & 0xff000000) ^
+                (Te4[(t0 >> 16) & 0xff] & 0x00ff0000) ^
+                (Te4[(t1 >>  8) & 0xff] & 0x0000ff00) ^
+                (Te4[(t2      ) & 0xff] & 0x000000ff) ^
+                rk[3];
+        PUTU32(ct + 12, s3);
 }
 
 #if 0
 void rijndaelDecrypt(const u32 rk[/*4*(Nr + 1)*/], int Nr, const u8 ct[16], u8 pt[16]) {
-	u32 s0, s1, s2, s3, t0, t1, t2, t3;
+        u32 s0, s1, s2, s3, t0, t1, t2, t3;
 #ifndef FULL_UNROLL
     int r;
 #endif /* ?FULL_UNROLL */
 
     /*
-	 * map byte array block to cipher state
-	 * and add initial round key:
-	 */
+         * map byte array block to cipher state
+         * and add initial round key:
+         */
     s0 = GETU32(ct     ) ^ rk[0];
     s1 = GETU32(ct +  4) ^ rk[1];
     s2 = GETU32(ct +  8) ^ rk[2];
@@ -1258,7 +1258,7 @@ void rijndaelDecrypt(const u32 rk[/*4*(Nr + 1)*/], int Nr, const u8 ct[16], u8 p
             t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >>  8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[55];
         }
     }
-	rk += Nr << 2;
+        rk += Nr << 2;
 #else  /* !FULL_UNROLL */
     /*
      * Nr - 1 full rounds:
@@ -1322,36 +1322,44 @@ void rijndaelDecrypt(const u32 rk[/*4*(Nr + 1)*/], int Nr, const u8 ct[16], u8 p
     }
 #endif /* ?FULL_UNROLL */
     /*
-	 * apply last round and
-	 * map cipher state to byte array block:
-	 */
-   	s0 =
-   		(Td4[(t0 >> 24)       ] & 0xff000000) ^
-   		(Td4[(t3 >> 16) & 0xff] & 0x00ff0000) ^
-   		(Td4[(t2 >>  8) & 0xff] & 0x0000ff00) ^
-   		(Td4[(t1      ) & 0xff] & 0x000000ff) ^
-   		rk[0];
-	PUTU32(pt     , s0);
-   	s1 =
-   		(Td4[(t1 >> 24)       ] & 0xff000000) ^
-   		(Td4[(t0 >> 16) & 0xff] & 0x00ff0000) ^
-   		(Td4[(t3 >>  8) & 0xff] & 0x0000ff00) ^
-   		(Td4[(t2      ) & 0xff] & 0x000000ff) ^
-   		rk[1];
-	PUTU32(pt +  4, s1);
-   	s2 =
-   		(Td4[(t2 >> 24)       ] & 0xff000000) ^
-   		(Td4[(t1 >> 16) & 0xff] & 0x00ff0000) ^
-   		(Td4[(t0 >>  8) & 0xff] & 0x0000ff00) ^
-   		(Td4[(t3      ) & 0xff] & 0x000000ff) ^
-   		rk[2];
-	PUTU32(pt +  8, s2);
-   	s3 =
-   		(Td4[(t3 >> 24)       ] & 0xff000000) ^
-   		(Td4[(t2 >> 16) & 0xff] & 0x00ff0000) ^
-   		(Td4[(t1 >>  8) & 0xff] & 0x0000ff00) ^
-   		(Td4[(t0      ) & 0xff] & 0x000000ff) ^
-   		rk[3];
-	PUTU32(pt + 12, s3);
+         * apply last round and
+         * map cipher state to byte array block:
+         */
+        s0 =
+                (Td4[(t0 >> 24)       ] & 0xff000000) ^
+                (Td4[(t3 >> 16) & 0xff] & 0x00ff0000) ^
+                (Td4[(t2 >>  8) & 0xff] & 0x0000ff00) ^
+                (Td4[(t1      ) & 0xff] & 0x000000ff) ^
+                rk[0];
+        PUTU32(pt     , s0);
+        s1 =
+                (Td4[(t1 >> 24)       ] & 0xff000000) ^
+                (Td4[(t0 >> 16) & 0xff] & 0x00ff0000) ^
+                (Td4[(t3 >>  8) & 0xff] & 0x0000ff00) ^
+                (Td4[(t2      ) & 0xff] & 0x000000ff) ^
+                rk[1];
+        PUTU32(pt +  4, s1);
+        s2 =
+                (Td4[(t2 >> 24)       ] & 0xff000000) ^
+                (Td4[(t1 >> 16) & 0xff] & 0x00ff0000) ^
+                (Td4[(t0 >>  8) & 0xff] & 0x0000ff00) ^
+                (Td4[(t3      ) & 0xff] & 0x000000ff) ^
+                rk[2];
+        PUTU32(pt +  8, s2);
+        s3 =
+                (Td4[(t3 >> 24)       ] & 0xff000000) ^
+                (Td4[(t2 >> 16) & 0xff] & 0x00ff0000) ^
+                (Td4[(t1 >>  8) & 0xff] & 0x0000ff00) ^
+                (Td4[(t0      ) & 0xff] & 0x000000ff) ^
+                rk[3];
+        PUTU32(pt + 12, s3);
 }
 #endif
+
+/*
+  Local Variables:
+  mode:c
+  indent-tabs-mode:nil
+  c-basic-offset:2
+  End:
+*/
diff --git a/src/common/aes.h b/src/common/aes.h
index f162da201..2edbb8818 100644
--- a/src/common/aes.h
+++ b/src/common/aes.h
@@ -21,3 +21,11 @@ void aes_set_counter(aes_cnt_cipher_t *cipher, uint64_t counter);
 void aes_adjust_counter(aes_cnt_cipher_t *cipher, long delta);
 
 #endif
+
+/*
+  Local Variables:
+  mode:c
+  indent-tabs-mode:nil
+  c-basic-offset:2
+  End:
+*/
diff --git a/src/common/crypto.h b/src/common/crypto.h
index 36bc21fca..94a18abf2 100644
--- a/src/common/crypto.h
+++ b/src/common/crypto.h
@@ -20,6 +20,9 @@
 #define PK_PKCS1_PADDING      60001
 #define PK_PKCS1_OAEP_PADDING 60002
 
+#define PKCS1_PADDING_OVERHEAD 11
+#define PKCS1_OAEP_PADDING_OVERHEAD 42
+
 typedef struct crypto_pk_env_t crypto_pk_env_t;
 typedef struct crypto_cipher_env_t crypto_cipher_env_t;
 typedef struct crypto_digest_env_t crypto_digest_env_t;
diff --git a/src/common/fakepoll.c b/src/common/fakepoll.c
index b60514a25..37258d832 100644
--- a/src/common/fakepoll.c
+++ b/src/common/fakepoll.c
@@ -95,3 +95,11 @@ tor_poll(struct pollfd *ufds, unsigned int nfds, int timeout)
         return r;
 }
 #endif
+
+/*
+  Local Variables:
+  mode:c
+  indent-tabs-mode:nil
+  c-basic-offset:2
+  End:
+*/
diff --git a/src/common/fakepoll.h b/src/common/fakepoll.h
index 93e287925..47490326c 100644
--- a/src/common/fakepoll.h
+++ b/src/common/fakepoll.h
@@ -46,3 +46,11 @@ int tor_poll(struct pollfd *ufds, unsigned int nfds, int timeout);
 #endif
 
 #endif
+
+/*
+  Local Variables:
+  mode:c
+  indent-tabs-mode:nil
+  c-basic-offset:2
+  End:
+*/
diff --git a/src/common/log.c b/src/common/log.c
index 5e52cfff4..73733dccf 100644
--- a/src/common/log.c
+++ b/src/common/log.c
@@ -170,3 +170,10 @@ int add_file_log(int loglevel, const char *filename)
   return 0;
 }
 
+/*
+  Local Variables:
+  mode:c
+  indent-tabs-mode:nil
+  c-basic-offset:2
+  End:
+*/
diff --git a/src/common/log.h b/src/common/log.h
index 4656a2196..cd107fcfd 100644
--- a/src/common/log.h
+++ b/src/common/log.h
@@ -43,3 +43,11 @@ void _log_fn(int severity, const char *funcname, const char *format, ...)
 
 # define __LOG_H
 #endif
+
+/*
+  Local Variables:
+  mode:c
+  indent-tabs-mode:nil
+  c-basic-offset:2
+  End:
+*/
diff --git a/src/common/torint.h b/src/common/torint.h
index d3efe6212..c80404a46 100644
--- a/src/common/torint.h
+++ b/src/common/torint.h
@@ -152,5 +152,12 @@ typedef unsigned __int64 uint64_t;
 #error "Missing type uint64_t"
 #endif
 
-
 #endif /* __TORINT_H */
+
+/*
+  Local Variables:
+  mode:c
+  indent-tabs-mode:nil
+  c-basic-offset:2
+  End:
+*/
diff --git a/src/common/tortls.c b/src/common/tortls.c
index 956692b83..e347d898e 100644
--- a/src/common/tortls.c
+++ b/src/common/tortls.c
@@ -584,3 +584,11 @@ unsigned long tor_tls_get_n_bytes_written(tor_tls *tls)
   assert(tls);
   return BIO_number_written(SSL_get_wbio(tls->ssl));
 }
+
+/*
+  Local Variables:
+  mode:c
+  indent-tabs-mode:nil
+  c-basic-offset:2
+  End:
+*/
diff --git a/src/common/tortls.h b/src/common/tortls.h
index 14dd3dda4..d9e326e55 100644
--- a/src/common/tortls.h
+++ b/src/common/tortls.h
@@ -33,3 +33,11 @@ unsigned long tor_tls_get_n_bytes_read(tor_tls *tls);
 unsigned long tor_tls_get_n_bytes_written(tor_tls *tls);
 
 #endif
+
+/*
+  Local Variables:
+  mode:c
+  indent-tabs-mode:nil
+  c-basic-offset:2
+  End:
+*/
diff --git a/src/common/util.c b/src/common/util.c
index 050340f18..23a4aa55f 100644
--- a/src/common/util.c
+++ b/src/common/util.c
@@ -298,7 +298,7 @@ struct strmap_t {
 };
 
 static int compare_strmap_entries(struct strmap_entry_t *a,
-				 struct strmap_entry_t *b)
+                                 struct strmap_entry_t *b)
 {
   return strcmp(a->key, b->key);
 }
@@ -444,8 +444,8 @@ void* strmap_remove_lc(strmap_t *map, const char *key)
  *   strmap_foreach(map, upcase_and_remove_empty_vals, NULL);
  */
 void strmap_foreach(strmap_t *map,
-		    void* (*fn)(const char *key, void *val, void *data),
-		    void *data)
+                    void* (*fn)(const char *key, void *val, void *data),
+                    void *data)
 {
   strmap_entry_t *ptr, *next;
   assert(map && fn);
@@ -1298,3 +1298,11 @@ int tor_inet_aton(const char *c, struct in_addr* addr)
   return 1;
 #endif
 }
+
+/*
+  Local Variables:
+  mode:c
+  indent-tabs-mode:nil
+  c-basic-offset:2
+  End:
+*/