4 dec32(uchar *dest, int ndest, char *src, int nsrc)
10 if(ndest+1 < (5*nsrc+7)/8)
13 tab = "23456789abcdefghijkmnpqrstuvwxyz";
16 s = strchr(tab,(int)src[i]);
19 *dest++ = (u[0]<<3) | (0x7 & (u[1]>>2));
20 *dest++ = ((0x3 & u[1])<<6) | (u[2]<<1) | (0x1 & (u[3]>>4));
21 *dest++ = ((0xf & u[3])<<4) | (0xf & (u[4]>>1));
22 *dest++ = ((0x1 & u[4])<<7) | (u[5]<<2) | (0x3 & (u[6]>>3));
23 *dest++ = ((0x7 & u[6])<<5) | u[7];
28 if(nsrc == 1 || nsrc == 3 || nsrc == 6)
30 for(i=0; i<nsrc; i++){
31 s = strchr(tab,(int)src[i]);
34 *dest++ = (u[0]<<3) | (0x7 & (u[1]>>2));
37 *dest++ = ((0x3 & u[1])<<6) | (u[2]<<1) | (0x1 & (u[3]>>4));
40 *dest++ = ((0xf & u[3])<<4) | (0xf & (u[4]>>1));
43 *dest++ = ((0x1 & u[4])<<7) | (u[5]<<2) | (0x3 & (u[6]>>3));
50 enc32(char *dest, int ndest, uchar *src, int nsrc)
55 if(ndest <= (8*nsrc+4)/5 )
58 tab = "23456789abcdefghijkmnpqrstuvwxyz";
60 j = (0x1f & (src[0]>>3));
62 j = (0x1c & (src[0]<<2)) | (0x03 & (src[1]>>6));
64 j = (0x1f & (src[1]>>1));
66 j = (0x10 & (src[1]<<4)) | (0x0f & (src[2]>>4));
68 j = (0x1e & (src[2]<<1)) | (0x01 & (src[3]>>7));
70 j = (0x1f & (src[3]>>2));
72 j = (0x18 & (src[3]<<3)) | (0x07 & (src[4]>>5));
74 j = (0x1f & (src[4]));
80 j = (0x1f & (src[0]>>3));
82 j = (0x1c & (src[0]<<2));
85 j |= (0x03 & (src[1]>>6));
87 j = (0x1f & (src[1]>>1));
91 j = (0x10 & (src[1]<<4));
94 j |= (0x0f & (src[2]>>4));
96 j = (0x1e & (src[2]<<1));
99 j |= (0x01 & (src[3]>>7));
101 j = (0x1f & (src[3]>>2));
103 j = (0x18 & (src[3]<<3));