31 static const uint8_t
map2[] =
33 0x3e, 0xff, 0xff, 0xff, 0x3f, 0x34, 0x35, 0x36,
34 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0xff,
35 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x01,
36 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
37 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11,
38 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19,
39 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1a, 0x1b,
40 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23,
41 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b,
42 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33
51 for (i = 0; in[i] && in[i] !=
'='; i++) {
52 unsigned int index= in[i]-43;
55 v = (v << 6) +
map2[index];
57 if (dst - out < out_size) {
58 *dst++ = v >> (6 - 2 * (i & 3));
74 static const char b64[] =
75 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
79 int bytes_remaining = in_size;
81 if (in_size >= UINT_MAX / 4 ||
85 while (bytes_remaining) {
86 i_bits = (i_bits << 8) + *in++;
91 *dst++ = b64[(i_bits << 6 >> i_shift) & 0x3f];
93 }
while (i_shift > 6 || (bytes_remaining == 0 && i_shift > 0));
95 while ((dst - ret) & 3)
106 #define MAX_DATA_SIZE 1024
107 #define MAX_ENCODED_SIZE 2048
109 static int test_encode_decode(
const uint8_t *
data,
unsigned int data_size,
110 const char *encoded_ref)
112 char encoded[MAX_ENCODED_SIZE];
113 uint8_t data2[MAX_DATA_SIZE];
114 int data2_size, max_data2_size = MAX_DATA_SIZE;
117 printf(
"Failed: cannot encode the input data\n");
120 if (encoded_ref && strcmp(encoded, encoded_ref)) {
121 printf(
"Failed: encoded string differs from reference\n"
122 "Encoded:\n%s\nReference:\n%s\n", encoded, encoded_ref);
127 printf(
"Failed: cannot decode the encoded string\n"
128 "Encoded:\n%s\n", encoded);
131 if (memcmp(data2, data, data_size)) {
132 printf(
"Failed: encoded/decoded data differs from original data\n");
142 int i, error_count = 0;
145 const char *encoded_ref;
151 {
"4444",
"NDQ0NA=="},
152 {
"55555",
"NTU1NTU="},
153 {
"666666",
"NjY2NjY2"},
154 {
"abc:def",
"YWJjOmRlZg=="},
157 printf(
"Encoding/decoding tests\n");
159 error_count += test_encode_decode(tests[i].data, strlen(tests[i].data), tests[i].encoded_ref);