Hash-Based Message Authentication Code (SHA-512 HMAC)
Authentication Application and Python Source Code
The Hash-Based or Keyed-Hash Message Authentication Code (HMAC) using the SHA-512 hash function provides a mechanism for symmetrically verifying the integrity and authenticity of data.
DOWNLOADS
SHA-512 HMAC.exe - Desktop Application
SHA-512 HMAC.py - Python Source Code
Password: password
INSTRUCTIONS
Select “Next”
Select “File” or “Folder” and choose.
Enter password
Select “Next”
SHA-512 HMAC of “File” or “Folder”
Select “Save As” or “Exit”
SHA-512 HMAC file has been saved.
Select “Exit”
Saved SHA-512 HMAC File
BACKGROUND
HMAC is a construction that combines a cryptographic hash function with a secret key to generate a MAC (Message Authentication Code) for a message. The HMAC algorithm takes a message and a secret key as inputs and produces a fixed-size hash value, which is used to verify the integrity and authenticity of the data.
SHA-512 HMAC is considered secure when implemented correctly and used with a strong key. SHA-512 HMAC is used in various security protocols and applications to verify the integrity and authenticity of data, securing communication over the internet, securing network communications, and securing API requests.
Overall, SHA-512 HMAC provides a robust and efficient method for ensuring data integrity and authenticity in secure communication systems.
HOW IT WORKS
Key Padding: If the secret key is longer than the block size of SHA-512 (128 bytes), it is hashed to obtain a key that fits the block size. If it is shorter, it is padded with zeros.
Outer Padding: The key is XORed with a constant value (0x5c repeated for the block size) to create the outer padding.
Inner Padding: The key is XORed with another constant value (0x36 repeated for the block size) to create the inner padding.
Hashing: The inner padding is concatenated with the message and hashed using SHA-512. The result is then concatenated with the outer padding and hashed again using SHA-512.
Finalization: The final hash value is the SHA-512 HMAC output.