mirror of
https://github.com/openssl/openssl.git
synced 2024-12-15 06:01:37 +08:00
e44192d14b
Also documents our new canonical naming. Reviewed-by: Paul Dale <paul.dale@oracle.com> (Merged from https://github.com/openssl/openssl/pull/10092)
172 lines
4.7 KiB
Plaintext
172 lines
4.7 KiB
Plaintext
=pod
|
|
|
|
=head1 NAME
|
|
|
|
openssl-kdf - perform Key Derivation Function operations
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
B<openssl kdf>
|
|
[B<-help>]
|
|
[B<-kdfopt> I<nm>:I<v>]
|
|
[B<-keylen> I<num>]
|
|
[B<-out> I<filename>]
|
|
[B<-binary>]
|
|
I<kdf_name>
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
The key derivation functions generate a derived key from either a secret or
|
|
password.
|
|
|
|
=head1 OPTIONS
|
|
|
|
=over 4
|
|
|
|
=item B<-help>
|
|
|
|
Print a usage message.
|
|
|
|
=item B<-keylen> I<num>
|
|
|
|
The output size of the derived key. This field is required.
|
|
|
|
=item B<-out> I<filename>
|
|
|
|
Filename to output to, or standard output by default.
|
|
|
|
=item B<-binary>
|
|
|
|
Output the derived key in binary form. Uses hexadecimal text format if not specified.
|
|
|
|
=item B<-kdfopt> I<nm>:I<v>
|
|
|
|
Passes options to the KDF algorithm.
|
|
A comprehensive list of parameters can be found in the EVP_KDF_CTX
|
|
implementation documentation.
|
|
Common parameter names used by EVP_KDF_CTX_set_params() are:
|
|
|
|
=over 4
|
|
|
|
=item B<key:>I<string>
|
|
|
|
Specifies the secret key as an alphanumeric string (use if the key contains
|
|
printable characters only).
|
|
The string length must conform to any restrictions of the KDF algorithm.
|
|
A key must be specified for most KDF algorithms.
|
|
|
|
=item B<hexkey:>I<string>
|
|
|
|
Specifies the secret key in hexadecimal form (two hex digits per byte).
|
|
The key length must conform to any restrictions of the KDF algorithm.
|
|
A key must be specified for most KDF algorithms.
|
|
|
|
=item B<pass:>I<string>
|
|
|
|
Specifies the password as an alphanumeric string (use if the password contains
|
|
printable characters only).
|
|
The password must be specified for PBKDF2 and scrypt.
|
|
|
|
=item B<hexpass:>I<string>
|
|
|
|
Specifies the password in hexadecimal form (two hex digits per byte).
|
|
The password must be specified for PBKDF2 and scrypt.
|
|
|
|
=item B<digest:>I<string>
|
|
|
|
Specifies the name of a digest as an alphanumeric string.
|
|
To see the list of supported digests, use the command I<list -digest-commands>.
|
|
|
|
=back
|
|
|
|
=item I<kdf_name>
|
|
|
|
Specifies the name of a supported KDF algorithm which will be used.
|
|
The supported algorithms names include TLS1-PRF, HKDF, SSKDF, PBKDF2,
|
|
SSHKDF, X942KDF, X963KDF and SCRYPT.
|
|
|
|
=back
|
|
|
|
=head1 EXAMPLES
|
|
|
|
Use TLS1-PRF to create a hex-encoded derived key from a secret key and seed:
|
|
|
|
openssl kdf -keylen 16 -kdfopt digest:SHA2-256 -kdfopt key:secret \
|
|
-kdfopt seed:seed TLS1-PRF
|
|
|
|
Use HKDF to create a hex-encoded derived key from a secret key, salt and info:
|
|
|
|
openssl kdf -keylen 10 -kdfopt digest:SHA2-256 -kdfopt key:secret \
|
|
-kdfopt salt:salt -kdfopt info:label HKDF
|
|
|
|
Use SSKDF with KMAC to create a hex-encoded derived key from a secret key, salt and info:
|
|
|
|
openssl kdf -keylen 64 -kdfopt mac:KMAC-128 -kdfopt maclen:20 \
|
|
-kdfopt hexkey:b74a149a161545 -kdfopt hexinfo:348a37a2 \
|
|
-kdfopt hexsalt:3638271ccd68a2 SSKDF
|
|
|
|
Use SSKDF with HMAC to create a hex-encoded derived key from a secret key, salt and info:
|
|
|
|
openssl kdf -keylen 16 -kdfopt mac:HMAC -kdfopt digest:SHA2-256 \
|
|
-kdfopt hexkey:b74a149a -kdfopt hexinfo:348a37a2 \
|
|
-kdfopt hexsalt:3638271c SSKDF
|
|
|
|
Use SSKDF with Hash to create a hex-encoded derived key from a secret key, salt and info:
|
|
|
|
openssl kdf -keylen 14 -kdfopt digest:SHA2-256 \
|
|
-kdfopt hexkey:6dbdc23f045488 \
|
|
-kdfopt hexinfo:a1b2c3d4 SSKDF
|
|
|
|
Use SSHKDF to create a hex-encoded derived key from a secret key, hash and session_id:
|
|
|
|
openssl kdf -keylen 16 -kdfopt digest:SHA2-256 \
|
|
-kdfopt hexkey:0102030405 \
|
|
-kdfopt hexxcghash:06090A \
|
|
-kdfopt hexsession_id:01020304 \
|
|
-kdfopt type:A SSHKDF
|
|
|
|
Use PBKDF2 to create a hex-encoded derived key from a password and salt:
|
|
|
|
openssl kdf -keylen 32 -kdfopt digest:SHA256 -kdfopt pass:password \
|
|
-kdfopt salt:salt -kdfopt iter:2 PBKDF2
|
|
|
|
Use scrypt to create a hex-encoded derived key from a password and salt:
|
|
|
|
openssl kdf -keylen 64 -kdfopt pass:password -kdfopt salt:NaCl \
|
|
-kdfopt N:1024 -kdfopt r:8 -kdfopt p:16 \
|
|
-kdfopt maxmem_bytes:10485760 SCRYPT
|
|
|
|
=head1 NOTES
|
|
|
|
The KDF mechanisms that are available will depend on the options
|
|
used when building OpenSSL.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<openssl(1)>,
|
|
L<openssl-pkeyutl(1)>,
|
|
L<EVP_KDF(3)>,
|
|
L<EVP_KDF-SCRYPT(7)>,
|
|
L<EVP_KDF-TLS1_PRF(7)>,
|
|
L<EVP_KDF-PBKDF2(7)>,
|
|
L<EVP_KDF-HKDF(7)>,
|
|
L<EVP_KDF-SS(7)>,
|
|
L<EVP_KDF-SSHKDF(7)>,
|
|
L<EVP_KDF-X942(7)>,
|
|
L<EVP_KDF-X963(7)>
|
|
|
|
=head1 HISTORY
|
|
|
|
Added in OpenSSL 3.0
|
|
|
|
=head1 COPYRIGHT
|
|
|
|
Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
|
|
|
|
Licensed under the OpenSSL license (the "License"). You may not use
|
|
this file except in compliance with the License. You can obtain a copy
|
|
in the file LICENSE in the source distribution or at
|
|
L<https://www.openssl.org/source/license.html>.
|
|
|
|
=cut
|