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Thanks for reporting this. I tested this independently by tweaking one of our test cases, namely test_suite_ecdsa.function:ecdsa_prim_random(). It seems there is indeed something special about all zeroes: tweaked test failing with input buffer with all zeroes but not if byte 0 or 2 is set to 1.
The
in
array represents the value 0. Signing succeeds, but produces a signature thatmbedtls_ecdsa_verify
cannot verify.The text was updated successfully, but these errors were encountered: