libscrypt.h File Reference

#include <stdint.h>

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Macros
#define	SCRYPT_HASH_LEN
#define	SCRYPT_SAFE_N
#define	SCRYPT_SALT_LEN   16 /* This is just a recommended size */
#define	SCRYPT_MCF_LEN   125 /* mcf is 120 byte + nul */
#define	SCRYPT_MCF_ID   "$s1"
#define	SCRYPT_N   16384
#define	SCRYPT_r   8
#define	SCRYPT_p   16

Functions
int	libscrypt_scrypt (const uint8_t *, size_t, const uint8_t *, size_t, uint64_t, uint32_t, uint32_t, uint8_t *, size_t)
	crypto_scrypt(passwd, passwdlen, salt, saltlen, N, r, p, buf, buflen): Compute scrypt(passwd[0 . More...
int	libscrypt_mcf (uint32_t N, uint32_t r, uint32_t p, const char *salt, const char *hash, char *mcf)
int	libscrypt_check (char *mcf, const char *password)

Macro Definition Documentation

#define SCRYPT_HASH_LEN

Value:

64 /* This can be user defined - 
 *but 64 is the reference size
 */

Definition at line 44 of file libscrypt.h.

#define SCRYPT_MCF_ID   "$s1"

Definition at line 52 of file libscrypt.h.

#define SCRYPT_MCF_LEN   125 /* mcf is 120 byte + nul */

Definition at line 51 of file libscrypt.h.

#define SCRYPT_N   16384

Definition at line 53 of file libscrypt.h.

#define SCRYPT_p   16

Definition at line 55 of file libscrypt.h.

#define SCRYPT_r   8

Definition at line 54 of file libscrypt.h.

#define SCRYPT_SAFE_N

Value:

30 /* This is much higher than you want. It's just
                          * a blocker for insane defines
                          */

Definition at line 47 of file libscrypt.h.

#define SCRYPT_SALT_LEN   16 /* This is just a recommended size */

Definition at line 50 of file libscrypt.h.

Function Documentation

int libscrypt_check	(	char *	mcf,
		const char *	password
	)

Definition at line 16 of file crypto_scrypt-check.c.

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int libscrypt_mcf	(	uint32_t	N,
		uint32_t	r,
		uint32_t	p,
		const char *	salt,
		const char *	hash,
		char *	mcf
	)

Definition at line 41 of file crypto-mcf.c.

int libscrypt_scrypt	(	const uint8_t *	passwd,
		size_t	passwdlen,
		const uint8_t *	salt,
		size_t	saltlen,
		uint64_t	N,
		uint32_t	r,
		uint32_t	p,
		uint8_t *	buf,
		size_t	buflen
	)

crypto_scrypt(passwd, passwdlen, salt, saltlen, N, r, p, buf, buflen): Compute scrypt(passwd[0 .

. passwdlen - 1], salt[0 .. saltlen - 1], N, r, p, buflen) and write the result into buf. The parameters r, p, and buflen must satisfy r * p < 2^30 and buflen <= (2^32 - 1) * 32. The parameter N must be a power of 2 greater than 1.

libscrypt_scrypt(passwd, passwdlen, salt, saltlen, N, r, p, buf, buflen): password; duh N: CPU AND RAM cost (first modifier) r: RAM Cost p: CPU cost (parallelisation) In short, N is your main performance modifier. Values of r = 8, p = 1 are standard unless you want to modify the CPU/RAM ratio. Return 0 on success; or -1 on error.

. passwdlen - 1], salt[0 .. saltlen - 1], N, r, p, buflen) and write the result into buf. The parameters r, p, and buflen must satisfy r * p < 2^30 and buflen <= (2^32 - 1) * 32. The parameter N must be a power of 2 greater than 1.

Return 0 on success; or -1 on error

Definition at line 234 of file crypto_scrypt-nosse.c.

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