HMAC-SHA1 Generator
Generate Hash-based Message Authentication Codes (HMAC) using the SHA-1 algorithm and a secret key.
Click to upload or drag and drop
Any file up to 50MB
What is HMAC-SHA1?
HMAC-SHA1 is a type of message authentication code (MAC) calculated using the SHA-1 hash function and a secret key. It is used to simultaneously verify both the data integrity and the authenticity of a message.
Usage Context
While SHA-1 has cryptographic weaknesses regarding collisions, HMAC-SHA1 is still widely used in legacy systems and protocol like OAuth 1.0. For higher security modern applications, HMAC-SHA256 is recommended.