Comments (4)
dchest
commented on June 22, 2024
Test that fails is:
/* generates a final value of (2^130 - 2) == 3 */
static const unsigned char wrap_key[32] = {
0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
};
static const unsigned char wrap_msg[16] = {
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff
};
static const unsigned char wrap_mac[16] = {
0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
};
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floodyberry
commented on June 22, 2024
Sorry about not updating for so long! This should be fixed now. The issue was not properly detecting if st->h was >= 2^130 - 5, coupled with believing my own README and defining POLY1305_16BITS instead of POLY1305_16BIT and not catching the failure. The chance of the bug affecting anything in the real world is essentially zero luckily, but it's good to have it fixed.
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dchest
commented on June 22, 2024
Thanks a lot!
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Gammatester
commented on June 22, 2024
Thank you! I just compiled and ran it under with GCC 4.7.3 and MS VC 6 and got
poly1305 self test: successful
sample mac is ddb9da7ddd5e52792730ed5cda5f90a4 (correct)
I will add a comment to the stackoverflow question.
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