stephanie-w
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| version: '3' | |
| services: | |
| graph-node: | |
| image: graphprotocol/graph-node | |
| ports: | |
| - '8000:8000' | |
| - '8001:8001' | |
| - '8020:8020' | |
| - '8030:8030' | |
| - '8040:8040' |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| specVersion: 0.0.3 | |
| description: >- | |
| A secure & decentralized way to address resources on and off the blockchain | |
| using simple, human-readable names. Access domains and transfer history. | |
| repository: 'https://github.com/ensdomains/ens-subgraph' | |
| schema: | |
| file: ./schema.graphql | |
| dataSources: | |
| - kind: ethereum/contract | |
| name: ENSRegistry |
stephanie-w
/ stegano_hexdump_decode2.py
Created
April 12, 2021 09:38
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| trailer = 'ffd9' # trailer for JPEG | |
| # Get trailer offset | |
| with open("cover.jpg", "rb") as cover_secret: | |
| file = cover_secret.read() | |
| offset = file.index(bytes.fromhex(trailer)) | |
| # Write cover bytes to output file from offset + trailer length | |
| with open("cover.jpg", "rb") as cover_secret, open("secret.txt", "wb") as secret: | |
| cover_secret.seek(offset + len(trailer)//2) |
stephanie-w
/ stegano_hexdump_encode2.py
Created
April 12, 2021 09:37
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| with open("cover.jpg", "ab") as cover, open("secret.txt", "rb") as secret: | |
| cover.write(secret.read()) |
stephanie-w
/ stegano_hexdump_decode.py
Last active
April 12, 2021 09:36
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| with open("cover.jpg", "rb") as f: | |
| for chunk in iter(lambda: f.read(8), b''): | |
| print(chunk.decode('utf-8', errors="ignore"), end="") |
stephanie-w
/ stegano_hexdump_encode.py
Last active
October 9, 2024 13:17
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| message = "Hello World!" | |
| with open("cover.jpg", "ab") as f: | |
| f.write(message.encode('utf8')) |
stephanie-w
/ stegano_exif_decode.py
Created
April 6, 2021 18:29
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| from PIL import Image | |
| import piexif | |
| im = Image.open("cover-secret.jpg") | |
| piexif.load(im.info["exif"])["0th"]\ | |
| [piexif.ImageIFD.ImageDescription].decode("utf-8") |
stephanie-w
/ stegano_exif_encode.py
Last active
April 12, 2021 11:38
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| from PIL import Image | |
| import piexif | |
| message = "Hello World!" | |
| im = Image.open("cover.jpg") | |
| if "exif" in im.info: | |
| exif_dict = piexif.load(im.info["exif"]) | |
| exif_dict["0th"][piexif.ImageIFD.ImageDescription] = message | |
| exif_bytes = piexif.dump(exif_dict) |
stephanie-w
/ stegano_lsb_qr_decode2.py
Created
April 6, 2021 18:16
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| from PIL import Image | |
| import numpy as np | |
| secret = Image.open("cover-secret.png") | |
| data_s = np.array(secret) | |
| bit = np.bitwise_and(np.right_shift(data_s, 1), 1) | |
| data_s = bit ^ data_s & 1 | |
| new_img = Image.fromarray(data_s * np.uint(255)) |
stephanie-w
/ stegano_lsb_qr_encode2.py
Created
April 6, 2021 18:15
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| from PIL import Image | |
| import numpy as np | |
| cover = Image.open("cover.png") | |
| data_c = np.array(cover) | |
| # Convert image to full black and white and resize to cover image | |
| secret = Image.open("qr-secret.png").convert('1') | |
| secret = secret.resize(cover.size) | |
| data_s = np.array(secret, dtype=np.uint8) |
NewerOlder