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Add a u256_hex_be module to encode/decode U256 types (#3321)

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## Issue Addressed

Resolves #3314 

## Proposed Changes

Add a module to encode/decode u256 types according to the execution layer encoding/decoding standards
https://github.com/ethereum/execution-apis/blob/main/src/engine/specification.md#structures

Updates `JsonExecutionPayloadV1.base_fee_per_gas`, `JsonExecutionPayloadHeaderV1.base_fee_per_gas`  and `TransitionConfigurationV1.terminal_total_difficulty` to encode/decode according to standards

Co-authored-by: Michael Sproul <micsproul@gmail.com>
This commit is contained in:
Pawan Dhananjay
2022-07-15 07:31:21 +00:00
parent 28b0ff27ff
commit 5243cc6c30
3 changed files with 148 additions and 0 deletions
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consensus/serde_utils/src/lib.rs
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@@ -6,6 +6,7 @@ pub mod hex_vec;
pub mod json_str;
pub mod list_of_bytes_lists;
pub mod quoted_u64_vec;
pub mod u256_hex_be;
pub mod u32_hex;
pub mod u64_hex_be;
pub mod u8_hex;