sha1.h File Reference

Software SHA-1 implementation — no platform dependencies. More...

#include <stddef.h>
#include <stdint.h>

Go to the source code of this file.

Macros
#define	SHA1_DIGEST_LEN   20
	SHA-1 digest length in bytes.

Functions
void	sha1 (const uint8_t *data, size_t len, uint8_t digest[SHA1_DIGEST_LEN])
	Compute a SHA-1 digest over an arbitrary byte buffer.

Detailed Description

Software SHA-1 implementation — no platform dependencies.

Used exclusively for the WebSocket opening handshake (RFC 6455 §4.2.2). Output is always a 20-byte digest.

Author

Douglas Quigg (dstroy0)

Date

2026

Definition in file sha1.h.

Macro Definition Documentation

SHA1_DIGEST_LEN

#define SHA1_DIGEST_LEN   20

SHA-1 digest length in bytes.

Definition at line 22 of file sha1.h.

Function Documentation

sha1()

void sha1	(	const uint8_t *	data,
		size_t	len,
		uint8_t	digest[SHA1_DIGEST_LEN]
	)

Compute a SHA-1 digest over an arbitrary byte buffer.

Parameters

data	Input bytes.
len	Number of input bytes.
digest	Output buffer; must be at least SHA1_DIGEST_LEN bytes.

Definition at line 24 of file sha1.cpp.