diff options
Diffstat (limited to 'contrib/linearize/linearize-data.py')
-rwxr-xr-x | contrib/linearize/linearize-data.py | 46 |
1 files changed, 3 insertions, 43 deletions
diff --git a/contrib/linearize/linearize-data.py b/contrib/linearize/linearize-data.py index 441b5da764..7510204bb1 100755 --- a/contrib/linearize/linearize-data.py +++ b/contrib/linearize/linearize-data.py @@ -20,49 +20,9 @@ from collections import namedtuple settings = {} -def hex_switchEndian(s): - """ Switches the endianness of a hex string (in pairs of hex chars) """ - pairList = [s[i:i+2].encode() for i in range(0, len(s), 2)] - return b''.join(pairList[::-1]).decode() - -def uint32(x): - return x & 0xffffffff - -def bytereverse(x): - return uint32(( ((x) << 24) | (((x) << 8) & 0x00ff0000) | - (((x) >> 8) & 0x0000ff00) | ((x) >> 24) )) - -def bufreverse(in_buf): - out_words = [] - for i in range(0, len(in_buf), 4): - word = struct.unpack('@I', in_buf[i:i+4])[0] - out_words.append(struct.pack('@I', bytereverse(word))) - return b''.join(out_words) - -def wordreverse(in_buf): - out_words = [] - for i in range(0, len(in_buf), 4): - out_words.append(in_buf[i:i+4]) - out_words.reverse() - return b''.join(out_words) - -def calc_hdr_hash(blk_hdr): - hash1 = hashlib.sha256() - hash1.update(blk_hdr) - hash1_o = hash1.digest() - - hash2 = hashlib.sha256() - hash2.update(hash1_o) - hash2_o = hash2.digest() - - return hash2_o - def calc_hash_str(blk_hdr): - hash = calc_hdr_hash(blk_hdr) - hash = bufreverse(hash) - hash = wordreverse(hash) - hash_str = hash.hex() - return hash_str + blk_hdr_hash = hashlib.sha256(hashlib.sha256(blk_hdr).digest()).digest() + return blk_hdr_hash[::-1].hex() def get_blk_dt(blk_hdr): members = struct.unpack("<I", blk_hdr[68:68+4]) @@ -78,7 +38,7 @@ def get_block_hashes(settings): for line in f: line = line.rstrip() if settings['rev_hash_bytes'] == 'true': - line = hex_switchEndian(line) + line = bytes.fromhex(line)[::-1].hex() blkindex.append(line) print("Read " + str(len(blkindex)) + " hashes") |