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Man Pages


Manual Reference Pages  -  AKMOS (1)

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NAME

akmos - sets of cryptography utils

CONTENTS

SYNOPSIS

akmos {action} [options]

DESCRIPTION

The akmos utility is used for encryption/decryption files and streams, compute message digests and other.

Here is the list of available actions:

dgst

calculate message digests

enc, dec

symmetric ciphering

mac

compute message authentication code

help

print short help

SYMMETRIC CIPHERING

   

akmos enc|dec [-a algo[:flag]] [-m mode] [-k keyfile] [-l keylen] [-p] [-i iter] [-y] [-h] {input} {output}

    Options

-a algo[:flag]

Crypto algorithm to use. By default is Twofish

Supported FLAGS

:ede flag put cipher into Encrypt-Decrypt-Encrypt mode (like 3DES)

:eee flag put cipher into Encrypt-Encrypt-Encrypt mode

-m mode

Crypto mode to use. By default is CBC

-k keyfile

Specifies a file which contains the keyfile

NOTE: size of keyfile is limited by 1 MiB

-p

Use a passphrase as a component of the keyfile

-l keylen

Key length (in bits) to use with the given crypto algorithm. By default is 128 bits

-i iter

Number of iterations to use with PKCS#5v2 when processing passphrase component. By defualt is 4096.

-y

Overwrite output file without promt

-h

Print short help

    Algorithms

Supported symmetric crypto algorithms: Anubis, Blowfish, Camellia, CAST6, RC6, Rijndael, SEED, Serpent, Twofish, Threefish-256, Threefish-512, Threefish-1024

    Modes

Supported crypto modes: ECB, CBC, OFB, CTR, CFB

    Key length

Anubis

128, 192, 256, 320

Blowfish

128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448

Camellia

128, 192, 256

CAST6

128, 192, 256

RC6

128, 192, 256

Rijndael

128, 192, 256

SEED

128

Serpent

128, 192, 256

Threefish-256

256

Threefish-512

512

Threefish-1024

1024

Twofish

128, 192, 256

HASHING

   

akmos dgst [-a algo] [-b] [-h] input...

    Options

-a algo

Digest algorithm to use. By default is SHA2-256

-b

Output result in binary format. By default use hexadecimal

-h

Print short help

    Algorithms

Supported digest algorithms: RIPEMD-160, RIPEMD-256, RIPEMD-320, SHA1, SHA2-224, SHA2-256, SHA2-384, SHA2-512, SHA3-224, SHA3-256, SHA3-384, SHA3-512, TIGER, WHIRLPOOL

MESSAGE AUTHENTICATION CODE (MAC)

   

akmos mac [-a algo] [-m mode] [-k keyfile] [-l keylen] [-p] [-b] [-h] input...

    Options

-m mode

MAC mode to use. By default is HMAC

-a algo

Algorithm to use. By default is SHA2-256 for HMAC mode

-k keyfile

Specifies a file which contains the keyfile

NOTE: size of keyfile is limited by 1 MiB

-p

Use a passphrase as a component of the keyfile

-l keylen

Key length (in bits) to use with the given algorithm.

NOTE: used in CBC-MAC mode

-b

Output computed MAC in raw (binary) form.

-h

Print short help

    Modes

Supported MAC modes: HMAC, CBC-MAC, CMAC

EXIT STATUS

The akmos utility exits 0 on successful completion, and >0 otherwise

AUTHOR

Andrew Romanenko <melanhit@gmail.com>

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akmos 0.5.1 AKMOS (1) March, 2016

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