HKDF-Expand Block Visualizer
Hash Function:
SHA-256 (64-byte blocks)
SHA-512 (128-byte blocks)
Paste your 'info' string here:
Example info string
Prepend 16 bytes
Prepend 32 bytes
Prepend 64 bytes
Legend:
HMAC Key Block
T(i-1)
info
counter (i)
Padding: