starknet_os: change all encoding to le in naive blake

[meship-starkware]

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• starknet_os: change the naive unpack to only handle data of len 1 #9508
• starknet_os: change all encoding to le in naive blake #9487 👈 (View in Graphite)
• starknet_os: fix blake2s finalize opcode command in naive blake #9477
• main-v0.14.1

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[Yoni-Starkware]

@Yoni-Starkware reviewed 3 of 5 files at r1, all commit messages.
Reviewable status: 3 of 5 files reviewed, 3 unresolved discussions

---

crates/apollo_starknet_os_program/src/cairo/starkware/starknet/core/os/naive_blake.cairo line 6 at r1 (raw file):

// Gets a felt that represent a 256-bit unsigned integer stored as an array of eight 32-bit unsigned integers
// represented in little-endian notation. Return the felt representation of the integer modulo prime.
func felt_from_le_u32s(u256: felt*) -> felt {

Suggestion:

u32s

---

crates/apollo_starknet_os_program/src/cairo/starkware/starknet/core/os/naive_blake.cairo line 9 at r1 (raw file):

    let hash = u256[7] * 2 ** 224 + u256[6] * 2 ** 192 + u256[5] * 2 ** 160 + u256[4] * 2 ** 128 +
        u256[3] * 2 ** 96 + u256[2] * 2 ** 64 + u256[1] * 2 ** 32 + u256[0];
    return hash;

Suggestion:

    let value = u256[7] * 2 ** 224 + u256[6] * 2 ** 192 + u256[5] * 2 ** 160 + u256[4] * 2 ** 128 +
        u256[3] * 2 ** 96 + u256[2] * 2 ** 64 + u256[1] * 2 ** 32 + u256[0];
    return value;

---

crates/apollo_starknet_os_program/src/cairo/starkware/starknet/core/os/naive_blake.cairo line 97 at r1 (raw file):

    );
    let (local blake_output: felt*) = alloc();
    blake_with_opcode(len=8 * data_len, data=encoded_data, out=blake_output);

Define encoded_data_len (with let)

Code quote:

8 * data_len