authpasswd(1) [debian man page]
AUTHPASSWD(1) Double Precision, Inc. AUTHPASSWD(1) NAME
authpasswd - Generate login passwords SYNOPSIS
authpasswd [method] DESCRIPTION
authpasswd is a helper utility that generates encrypted passwords for the Courier authentication library. The Courier authentication library is capable of using several different encryption methods for storing passwords. authpasswd issues a password prompt. Enter the same password twice (for verification purposes). authpasswd computes and prints the encrypted password. The encrypted password can be inserted verbatim into the appropriate account record that's processed by the authentication library's authmysql, authpgsql, or authldap module. method may be set to one of the following literals: crypt Use the traditional DES-based encrypted password. md5 Compute a base64-encoded MD5 password hash. md5raw Compute a hexadecimal-encoded MD5 password hash. sha1 Compute a SHA1 password hash. ssha Compute a salted SHA1 password hash. sha256 Compute a SHA256 password hash. If not specified, method defaults to the modified-MD5 password encryption algorithm that's used in Linux (note that this is different from the "md5" password hash method). Double Precision, Inc. 12/06/2008 AUTHPASSWD(1)
Check Out this Related Man Page
DOVEADM-PW(1) Dovecot DOVEADM-PW(1) NAME
doveadm-pw - Dovecot's password hash generator SYNOPSIS
doveadm [-Dv] pw -l doveadm [-Dv] pw [-p password] [-r rounds] [-s scheme] [-u user] [-V] doveadm [-Dv] pw -t hash [-u user] DESCRIPTION
doveadm pw is used to generate password hashes for different password schemes and optionally verify the generated hash. All generated password hashes have a {scheme} prefix, for example {SHA512-CRYPT.HEX}. All passdbs have a default scheme for passwords stored without the {scheme} prefix. The default scheme can be overridden by storing the password with the scheme prefix. OPTIONS
Global doveadm(1) options: -D Enables verbosity and debug messages. -v Enables verbosity, including progress counter. Command specific options: -l List all supported password schemes and exit successfully. There are up to three optional password schemes: BLF-CRYPT (Blowfish crypt), SHA256-CRYPT and SHA512-CRYPT. Their availability depends on the system's currently used libc. -p password The plain text password for which the hash should be generated. If no password was given doveadm(1) will prompt interactively for one. -r rounds The password schemes BLF-CRYPT, SHA256-CRYPT and SHA512-CRYPT supports a variable number of encryption rounds. The following table shows the minimum/maximum number of encryption rounds per scheme. When the -r option was omitted the default number of encryption rounds will be applied. Scheme | Minimum | Maximum | Default ---------------------------------------------- BLF-CRYPT | 4 | 31 | 5 SHA256-CRYPT | 1000 | 999999999 | 5000 SHA512-CRYPT | 1000 | 999999999 | 5000 -s scheme The password scheme which should be used to generate the hashed password. By default the CRAM-MD5 scheme will be used. It is also possible to append an encoding suffix to the scheme. Supported encoding suffixes are: .b64, .base64 and .hex. See also http://wiki2.dovecot.org/Authentication/PasswordSchemes for more details about password schemes. -t hash Test if the given password hash matches a given plain text password. -u user When the DIGEST-MD5 scheme is used, also the user name must be given, because the user name is a part of the generated hash. For more information about Digest-MD5 please read also: http://wiki2.dovecot.org/Authentication/Mechanisms/DigestMD5 -V When this option is given, the hashed password will be internally verified. The result of the verification will be shown after the hashed password, enclosed in parenthesis. EXAMPLE
The first password hash is a DIGEST-MD5 hash for jane.roe@example.com. The second password hash is a CRAM-MD5 hash for john.doe@exam- ple.com. doveadm pw -s digest-md5 -u jane.roe@example.com Enter new password: Retype new password: {DIGEST-MD5}9b9dcb4466233a9307bbc33708dffda0 doveadm pw Enter new password: Retype new password: {CRAM-MD5}913331d8782236a8ecba7764a63aa27b26437fd40ca878d887f11d81245c2c6b REPORTING BUGS
Report bugs, including doveconf -n output, to the Dovecot Mailing List <dovecot@dovecot.org>. Information about reporting bugs is avail- able at: http://dovecot.org/bugreport.html SEE ALSO
doveadm(1) Dovecot v2.1 2012-02-13 DOVEADM-PW(1)