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|
{
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"(BASE**EXPONENT) % MODULUS",
"0 - example: 3**(2**256 - 2**32 - 978) % (2**256 - 2**32 - 977).",
"1 - Would be parsed as a base of 0, exponent of 2**256 - 2**32 - 978 and modulus of 2**256 - 2**32 - 978, and so would return 0. Notice how if the length_of_BASE is 0, then it does not interpret any data as the base, instead immediately interpreting the next 32 bytes as length_of_EXPONENT.",
"2 - Would parse a base length of 0, a modulus length of 32, and an exponent length of 2**256 - 1, where the base is empty, the modulus is 2**256 - 2 and the exponent is (2**256 - 3) * 256**(2**256 - 33) (yes, that's a really big number). It would then immediately fail, as it's not possible to provide enough gas to make that computation.",
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"4 - Would also parse as a base of 3, an exponent of 65535 and a modulus of 2**255, as it attempts to grab 32 bytes for the modulus starting from 0x80, but then there is no further data so it right pads it with 31 zeroes.",
"5 - Missing values",
"6 - Empty value",
"7 - 0**0 % 0x80",
"8 - 0**0 % 0",
"9 - modlength zero",
"10 - 0**03 % 04",
"11 - 02**00 % 04",
"12 - 02**03 % 00",
"13 - **03 % 04",
"14 - 02** % 04",
"15 - 02**03 % ",
"16 - 02**03 % 06",
"17 - 02**03 % 0006",
"18,19,20 - Non-zero length mod, but passed calldata has not enough total length",
"21,21,22,23 - Non-zero length exp & mod, but passed data has only base and part of exp / only base",
"24 - Non-zero length base & exp & mod and no values in input data - interpreted as all zeroes",
"25 - Price calculation when baseLength > modLength",
"26 - bigint_expmod precompiled contract returns 1 for 0 ^ 0 mod 100"
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