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Code Issues Releases Wiki Activity

bootloader: introduce keymask

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This commit is contained in:
Pavol Rusnak 2017-03-06 18:05:21 +01:00
parent 78d82386d1
commit b28fd6327f
No known key found for this signature in database
GPG Key ID: 91F3B339B9A02A3D
1 changed files with 21 additions and 18 deletions
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39
micropython/bootloader/crypto.c
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@ -48,28 +48,31 @@ bool parse_header(const uint8_t *data, uint32_t *codelen, uint8_t *sigidx, uint8
return true;
}
const uint8_t *SL_PUBKEY[5] = {
(const uint8_t *)"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",
(const uint8_t *)"BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB",
(const uint8_t *)"CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC",
(const uint8_t *)"DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD",
(const uint8_t *)"EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE",
};
#define KEYMASK(A, B, C) ((1 << (A - 1)) | (1 << (B - 1)) | (1 << (C - 1)))
const uint8_t *get_pubkey(uint8_t index)
{
// TODO: compute combinations of pubkeys from index
switch (index) {
case 0x01:
return SL_PUBKEY[0];
case 0x02:
return SL_PUBKEY[1];
case 0x04:
return SL_PUBKEY[2];
case 0x08:
return SL_PUBKEY[3];
case 0x10:
return SL_PUBKEY[4];
case KEYMASK(1, 2, 3):
return (const uint8_t *)"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
case KEYMASK(1, 2, 4):
return (const uint8_t *)"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
case KEYMASK(1, 2, 5):
return (const uint8_t *)"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
case KEYMASK(1, 3, 4):
return (const uint8_t *)"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
case KEYMASK(1, 3, 5):
return (const uint8_t *)"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
case KEYMASK(1, 4, 5):
return (const uint8_t *)"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
case KEYMASK(2, 3, 4):
return (const uint8_t *)"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
case KEYMASK(2, 3, 5):
return (const uint8_t *)"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
case KEYMASK(2, 4, 5):
return (const uint8_t *)"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
case KEYMASK(3, 4, 5):
return (const uint8_t *)"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
default:
return NULL;
}