Function opcodeSha1

txscript/opcode.go:1891–1900

opcodeSha1 treats the top item of the data stack as raw bytes and replaces it with sha1(data). Stack transformation: [... x1] -> [... sha1(x1)]

(op *opcode, data []byte, vm *Engine)

//
// Stack transformation: [... x1] -> [... sha1(x1)]
func opcodeSha1(op *opcode, data []byte, vm *Engine) error {
	buf, err := vm.dstack.PopByteArray()
	if err != nil {
		return err
	}

	hash := sha1.Sum(buf)
	vm.dstack.PushByteArray(hash[:])
	return nil
}

// opcodeSha256 treats the top item of the data stack as raw bytes and replaces
// it with sha256(data).