Hash Cat T-Shirt
Black / XS
£27.00 GBP
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A cat made entirely of password hashes. Every one is real.
Sixteen hashes, from MD5 all the way to argon2id. Some crack in seconds. Some will keep your GPU busy for the weekend. One of them hides a flag worth points in our CTF; submit it under “Found on our merch” on the challenges page. And if you look closely, the cat has signed its work.
Bring a wordlist. Or just wear it and look like you already know the answers.
The details
• Full-front print, about 20 cm wide
• Soft, lightweight cotton with a little stretch
• 100% combed and ring-spun cotton (heather colours contain polyester)
• Fabric weight: 142 g/m² (4.2 oz/yd²)
• Pre-shrunk, so it keeps its size in the wash
• Side seams for a better fit, and taped shoulders that hold their shape
• Garment sourced from Nicaragua, Mexico, Honduras or the US
Good to know: the fabric is lightweight and can look slightly see-through in some lighting, although that’s much less noticeable on the dark colours.
Care: wash cold, inside out. Don’t iron over the print.
Hash Cat T-Shirt
£27.00 GBP
Sixteen hashes, from MD5 all the way to argon2id. Some crack in seconds. Some will keep your GPU busy for the weekend. One of them hides a flag worth points in our CTF; submit it under “Found on our merch” on the challenges page. And if you look closely, the cat has signed its work.
Bring a wordlist. Or just wear it and look like you already know the answers.
The details
• Full-front print, about 20 cm wide
• Soft, lightweight cotton with a little stretch
• 100% combed and ring-spun cotton (heather colours contain polyester)
• Fabric weight: 142 g/m² (4.2 oz/yd²)
• Pre-shrunk, so it keeps its size in the wash
• Side seams for a better fit, and taped shoulders that hold their shape
• Garment sourced from Nicaragua, Mexico, Honduras or the US
Good to know: the fabric is lightweight and can look slightly see-through in some lighting, although that’s much less noticeable on the dark colours.
Care: wash cold, inside out. Don’t iron over the print.
Size guide
| LENGTH (inches) | WIDTH (inches) | CHEST (inches) | |
| XS | 27 | 16 ½ | 31-34 |
| S | 28 | 18 | 34-37 |
| M | 29 | 20 | 38-41 |
| L | 30 | 22 | 42-45 |
| XL | 31 | 24 | 46-49 |
| 2XL | 32 | 26 | 50-53 |
| 3XL | 33 | 28 | 54-57 |
| 4XL | 34 | 30 | 58-61 |
| 5XL | 35 | 31 | 62-65 |
| LENGTH (cm) | WIDTH (cm) | CHEST (cm) | |
| XS | 68.6 | 42 | 78.7-86.4 |
| S | 71.1 | 45.7 | 86.4-94 |
| M | 73.7 | 50.8 | 96.5-104.1 |
| L | 76.2 | 55.9 | 106.7-114.3 |
| XL | 78.7 | 61 | 116.8-124.5 |
| 2XL | 81.3 | 66 | 127-134.6 |
| 3XL | 83.8 | 71.1 | 137.2-144.8 |
| 4XL | 86.4 | 76.2 | 147.3-155 |
| 5XL | 89 | 78.7 | 157.5-165 |