ENCRYPT(1) BSD Reference Manual ENCRYPT(1)
encrypt - encrypt passwords from the command line or standard input
encrypt -b rounds [-p | string] encrypt [-c class] [-p | string] encrypt -m [-p | string] encrypt -S salt [-p | string] encrypt -s salt [-p | string] encrypt -k makekey
encrypt prints the encrypted form of string to the standard output. This is mostly useful for encrypting passwords from within scripts. The options are as follows: -k Run in makekey compatible mode; a single combined key and salt are read from standard input and the DES encrypted result is written to standard output without a terminating newline. -b rounds Encrypt the string using Blowfish hashing with the specified rounds. -c class Use the cipher type specified in the given user login class. See login.conf(5) for more information. -m Encrypt the string using MD5. -p Prompt for a single string with echo turned off. -S salt Encrypt the string with the specified salt, using the algo- rithm specified by salt. -s salt Encrypt the string using DES, with the specified salt. If no string is specified, encrypt reads one string per line from stan- dard input, encrypting each one with the chosen algorithm from above. In the case where no specific algorithm or specific user login class was given as a command line option, the algorithm specified in the default class in /etc/login.conf will be used. For MD5 and Blowfish as well as any algorithm determined from the login class, a new random salt is automatically generated for each password, except if the -S option is used. Specifying the string on the command line should be discouraged; using the standard input is more secure.
encrypt first appeared in OpenBSD 1.2. A makekey command appeared in Version 7 AT&T UNIX. The -S option first appeared in MirOS #11. MirOS BSD #10-current September 6, 2008 1
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