XCRYPT - Online Linux Manual PageSection : 3
Updated : 2022-12-15
Source : Linux man-pages 6.03

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NAMExencrypt, xdecrypt, passwd2des − RFS password encryption

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LIBRARYStandard C library (libc, −lc)

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SYNOPSIS#include <rpc/des_crypt.h>"void passwd2des(char *passwd, char *key);int xencrypt(char *secret, char *passwd); int xdecrypt(char *secret, char *passwd);

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DESCRIPTIONWARNING: Do not use these functions in new code. They do not achieve any type of acceptable cryptographic security guarantees. The function passwd2des() takes a character string passwd of arbitrary length and fills a character array key of length 8. The array key is suitable for use as DES key. It has odd parity set in bit 0 of each byte. Both other functions described here use this function to turn their argument passwd into a DES key. The xencrypt() function takes the ASCII character string secret given in hex, which must have a length that is a multiple of 16, encrypts it using the DES key derived from passwd by passwd2des(), and outputs the result again in secret as a hex string of the same length. The xdecrypt() function performs the converse operation.

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RETURN VALUEThe functions xencrypt() and xdecrypt() return 1 on success and 0 on error.

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VERSIONSThese functions are available since glibc 2.1.

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ATTRIBUTESFor an explanation of the terms used in this section, see attributes(7). InterfaceAttributeValue passwd2des(), xencrypt(), xdecrypt() Thread safetyMT-Safe

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BUGSThe prototypes are missing from the abovementioned include file.

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SEE ALSOcbc_crypt(3) 0

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