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use binary.BigEndian to be more explicit

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This commit is contained in:
Kevaundray Wedderburn 2025-07-11 12:46:56 +01:00
parent 5eb27425ea
commit 9088d11c0c
1 changed files with 12 additions and 5 deletions
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17
core/vm/contracts.go
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@ -613,11 +613,18 @@ func (c *bigModExp) RequiredGas(input []byte) uint64 {
}
func (c *bigModExp) Run(input []byte) ([]byte, error) {
var (
baseLen = new(uint256.Int).SetBytes(getData(input, 0, 32)).Uint64()
expLen = new(uint256.Int).SetBytes(getData(input, 32, 32)).Uint64()
modLen = new(uint256.Int).SetBytes(getData(input, 64, 32)).Uint64()
)
// Extract lengths - they're 32-byte big-endian integers
// with the actual uint64 value in the last 8 bytes
var baseLen, expLen, modLen uint64
if len(input) >= 32 {
baseLen = binary.BigEndian.Uint64(input[24:32])
}
if len(input) >= 64 {
expLen = binary.BigEndian.Uint64(input[56:64])
}
if len(input) >= 96 {
modLen = binary.BigEndian.Uint64(input[88:96])
}
if len(input) > 96 {
input = input[96:]
} else {